{"id":7178,"date":"2022-06-15T22:40:55","date_gmt":"2022-06-15T17:10:55","guid":{"rendered":"https:\/\/physicscatalyst.com\/article\/?p=7178"},"modified":"2025-09-26T13:18:35","modified_gmt":"2025-09-26T07:48:35","slug":"motion-in-a-straight-line","status":"publish","type":"post","link":"https:\/\/physicscatalyst.com\/article\/motion-in-a-straight-line\/","title":{"rendered":"Motion in a Straight Line Class 11 Physics Notes CBSE NCERT Chapter 2"},"content":{"rendered":"\n<p>In this article, you will get revision notes for topic motion in a straight-line class 11 notes for physics NCERT book chapter 2. It is important to note here that motion in a straight line is nothing but motion in one dimension. Such a type of motion is also called <a href=\"https:\/\/physicscatalyst.com\/article\/linear-motion-examples\/\">linear motion<\/a> or <a href=\"https:\/\/physicscatalyst.com\/article\/rectilinear-motion\/\">rectilinear motion<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Motion in a Straight-Line Notes Physics Chapter 2<\/h2>\n\n\n\n<p>These Motion In a Straight Line notes can also be used if you are preparing for competitive exams like <strong>NEET<\/strong>, <strong>JEE Mains<\/strong> and <strong>JEE Advanced<\/strong>. We also have topic-wise notes on <a href=\"https:\/\/physicscatalyst.com\/class11.php\">class 11 physics<\/a> where you can have notes, worksheets etc for free.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Motion in a straight line notes for neet and IIT JEE<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">What is Kinematics<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Kinematics as we all know is the study of physical bodies (or objects) in motion without getting into the causes of that motion.&nbsp;<\/li>\n\n\n\n<li>Kinematics is the study of physical quantities such as distance, displacement, speed, velocity, and acceleration.&nbsp;<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Introduction<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>When we look around, we see various moving objects, such as people walking, automobiles driving, Ferris wheels spinning, etc.<\/li>\n\n\n\n<li>Everything in the universe is in motion, from Earth orbiting the Sun to the moon revolving around Earth.&nbsp;<\/li>\n\n\n\n<li>Change in the position of an object over time is defined as motion in physics.<\/li>\n\n\n\n<li>Both rest and motion are relative concepts.&nbsp;<\/li>\n\n\n\n<li>A body that is moving relative to one reference system may be at rest with respect to another frame of reference.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Point Object<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>In the field of kinematics, the term point object is often used.&nbsp;<\/li>\n\n\n\n<li>A moving object might be considered a point object if it is very small compared to the distance it covers.<\/li>\n\n\n\n<li><strong>Examples of point objects:-&nbsp;<\/strong><br><strong>(a)<\/strong> A car that travels 10 kilometres can be considered a &#8220;point object.&#8221;<br><strong>(b)<\/strong> When studying how the Earth orbits the Sun, it can be viewed as a point.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Position, Distance and Displacement<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">Position<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>When we talk about a particle&#8217;s position, we mean where it is in space at a certain point in time.&nbsp;<\/li>\n\n\n\n<li>To represent the position of a moving object at any particular time, we require a coordinate system with three mutually perpendicular axes.<\/li>\n\n\n\n<li>This coordinate system can be attached to the frame of reference of our choice.<\/li>\n\n\n\n<li><strong>The position of a particle<\/strong> can be defined with respect to this frame of reference.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Distance<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Distance<\/strong> is the total path length travelled by the moving object.<\/li>\n\n\n\n<li>It is the total length of the path travelled between two positions.<\/li>\n\n\n\n<li>It is a scalar quantity that only has magnitude but no direction<\/li>\n\n\n\n<li>SI unit for measurement of distance is a <strong>meter<\/strong>.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><a href=\"https:\/\/physicscatalyst.com\/article\/wp-content\/uploads\/2022\/06\/Distance-and-Displacement.png\"><img loading=\"lazy\" decoding=\"async\" width=\"457\" height=\"380\" src=\"https:\/\/physicscatalyst.com\/article\/wp-content\/uploads\/2022\/06\/Distance-and-Displacement.png\" alt=\"Distance and Displacement\" class=\"wp-image-9782\" srcset=\"https:\/\/physicscatalyst.com\/article\/wp-content\/uploads\/2022\/06\/Distance-and-Displacement.png 457w, https:\/\/physicscatalyst.com\/article\/wp-content\/uploads\/2022\/06\/Distance-and-Displacement-300x249.png 300w\" sizes=\"auto, (max-width: 457px) 100vw, 457px\" \/><\/a><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">Displacement<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The displacement of an object is the change in its position.<\/li>\n\n\n\n<li>It is the shortest distance between the object&#8217;s initial and final positions in a given direction.<\/li>\n\n\n\n<li><strong>Meter<\/strong> is the SI unit for displacement.&nbsp;<\/li>\n\n\n\n<li>Displacement has both direction and magnitude. So it is a <strong>vector quantity<\/strong>.<\/li>\n\n\n\n<li>Its magnitude can never be greater than the total distance i.e. |Displacement|\\leq Distance<\/li>\n\n\n\n<li>Distance and displacement are equivalent if a particle moves in a straight line without changing direction.<\/li>\n\n\n\n<li>It can be positive, negative or zero.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Speed<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The speed of a moving object is defined as the total distance covered divided by the time taken to cover that distance. <br>$$\\text{Speed}=\\frac{\\text{Total Distance Covered}}{\\text{Time Taken}}$$<\/li>\n\n\n\n<li><strong>Unit of speed &#8211;<\/strong> In the SI system speed is measured in $m\/s$. Sometimes $Km\/hr$ or mile per hour $(mph)$ is also used to express speed.<\/li>\n\n\n\n<li><strong>Dimensional Formula &#8211;<\/strong> $[M^0LT^{-1}]$<\/li>\n\n\n\n<li>The speed of an object can be positive or zero. It can not be negative.<\/li>\n\n\n\n<li>It is a scalar quantity.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Uniform Speed<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>An object has constant speed if it traverses an equal distance in equal time intervals, however small these time intervals may be.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Variable Speed<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>An object is considered to be moving at a variable speed if it travels the same distance in unequal time intervals, no matter how small these time intervals are.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Average Speed<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>How fast an object moves<\/li>\n\n\n\n<li>It is defined as the total distance covered divided by the time taken to cover that distance $$\\text{Average Speed}=\\frac{\\text{Total Distance Covered}}{\\text{Time Taken}}=\\frac{\\Delta x}{\\Delta t}$$<\/li>\n\n\n\n<li>Calculated when an object moves with variable speed.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Instantaneous speed<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>An object moving with variable speed has different values of speed at different instances of time.<\/li>\n\n\n\n<li><em>The instantaneous<\/em> speed of an object is the speed of an object at a given instant of time.<\/li>\n\n\n\n<li>A car&#8217;s speedometer gives us instantaneous speed.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Velocity<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>How fast an object moves and in what direction.<\/li>\n\n\n\n<li>The velocity of an object is defined as the displacement divided by the time it takes for the displacement. Mathematically, $$Velocity=\\frac{Displacement}{Time}$$<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Unit of velocity-<\/strong> In the SI system velocity is measured in m\/s. Sometimes Km\/hr or mile per hour (mph) is also used to express velocity.<\/li>\n\n\n\n<li>Its direction is the same as that of displacement.<\/li>\n\n\n\n<li><strong>Dimensional Formula <\/strong>&#8211; $[M^0LT^{-1}]$<\/li>\n\n\n\n<li>The velocity of an object can be positive, negative or zero.<\/li>\n\n\n\n<li>It is a vector quantity.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Uniform Velocity<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>An object is said to move with uniform velocity if it covers equal displacements in equal time intervals, no matter how small these time intervals are.<\/li>\n\n\n\n<li>Here both magnitude of velocity as well as the direction of velocity remains constant.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Variable Velocity<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A body is said to have had variable or non-uniform velocity if it covers unequal displacement in equal intervals of time. however small these time intervals may be.<\/li>\n\n\n\n<li>In this case, the magnitude of displacement, the direction of motion, or both change as time passes.<\/li>\n\n\n\n<li><strong>Example:-<\/strong> <br>A body moving in a circle at a constant speed has a non-uniform velocity. This is because, even if the magnitude of the velocity remains constant, the direction of the body&#8217;s velocity changes.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Average Velocity<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>It is defined as the total displacement covered divided by the time taken for that displacement $$\\text{Average Velocity}=\\frac{\\text{Displacement}}{\\text{Time Taken}} or, \\bar v=\\frac{\\Delta \\vec x}{\\Delta t}$$<\/li>\n\n\n\n<li>The bar over v indicates average velocity.<\/li>\n\n\n\n<li>Calculated when an object moves with variable velocity.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Instantaneous Velocity<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The velocity of a particle at a particular instant of time is given by instantaneous velocity.&nbsp;<\/li>\n\n\n\n<li>Instantaneous velocity is also known as the limit of average velocity as the time interval becomes infinitesimally small. Mathematically instantaneous velocity, $$v=\\lim_{\\Delta\\rightarrow0}\\frac{\\Delta x}{\\Delta t}$$<\/li>\n\n\n\n<li>The limit of ratio $\\frac{\\Delta x}{\\Delta t}$ as $\\Delta t$ approaches zero is called the derivative of $x$ with respect to $t$ and is written as $dx\/dt$<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" style=\"margin-top:var(--wp--preset--spacing--40);margin-bottom:var(--wp--preset--spacing--40)\"\/>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><a href=\"https:\/\/physicscatalyst.com\/article\/wp-content\/uploads\/2022\/06\/speed-and-velocity.png\"><img loading=\"lazy\" decoding=\"async\" width=\"692\" height=\"612\" src=\"https:\/\/physicscatalyst.com\/article\/wp-content\/uploads\/2022\/06\/speed-and-velocity.png\" alt=\"speed vs. velocity\" class=\"wp-image-9784\" style=\"width:538px;height:auto\" srcset=\"https:\/\/physicscatalyst.com\/article\/wp-content\/uploads\/2022\/06\/speed-and-velocity.png 692w, https:\/\/physicscatalyst.com\/article\/wp-content\/uploads\/2022\/06\/speed-and-velocity-300x265.png 300w, https:\/\/physicscatalyst.com\/article\/wp-content\/uploads\/2022\/06\/speed-and-velocity-640x566.png 640w\" sizes=\"auto, (max-width: 692px) 100vw, 692px\" \/><\/a><\/figure>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-group has-border-color has-ast-global-color-0-border-color has-background is-layout-flow wp-block-group-is-layout-flow\" style=\"border-style:solid;border-width:2px;border-radius:16px;background-color:#dff6d663;padding-top:10px;padding-right:10px;padding-bottom:10px;padding-left:10px\"><div class=\"wp-block-group__inner-container\">\n<h4 class=\"wp-block-heading\">Related articles:-<\/h4>\n\n\n\n<ol class=\"wp-block-list\">\n<li><a href=\"https:\/\/physicscatalyst.com\/article\/what-is-velocity-time-graph\/\">Velocity time graph<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/physicscatalyst.com\/article\/position-time-graph\/\">Position Time Graph<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/physicscatalyst.com\/mech\/Speed-and-Velocity.php\">Average Velocity vs Average Speed<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/physicscatalyst.com\/article\/how-to-find-acceleration-with-velocity-and-time\/\">how to find acceleration with velocity and time<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/physicscatalyst.com\/article\/average-speed-calculation\/\">Common mistake doing average speed calculation<\/a><\/li>\n<\/ol>\n<\/div><\/div>\n\n\n\n<div style=\"height:17px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Acceleration<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The rate of change of velocity is called acceleration.<\/li>\n\n\n\n<li>The change in velocity can be in either the magnitude or the direction of the velocity, or both at the same time.<\/li>\n\n\n\n<li>Mathematically,$$acceleration\\; \\vec a=\\frac{\\vec v}{t}$$<\/li>\n\n\n\n<li>Like velocity, acceleration is a vector quantity.<\/li>\n\n\n\n<li>Acceleration can be negative or positive and can be zero.<\/li>\n\n\n\n<li>Negative acceleration is also known as <strong>deceleration or retardation<\/strong>.<\/li>\n\n\n\n<li>Uniform acceleration occurs when an object undergoes equal changes in velocity at equal time intervals.<\/li>\n\n\n\n<li>SI unit of acceleration is $m\/s^2$<\/li>\n\n\n\n<li>The <strong>dimensional formula of acceleration<\/strong> is $[M^0L^1T^{-2}]$<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Average Acceleration<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The change in velocity divided by the time interval is defined as the average acceleration over that time interval.<\/li>\n\n\n\n<li>It is an average change of velocity per unit of time.<\/li>\n\n\n\n<li>Mathematically, $$a=\\frac{v_2-v_1}{t_2-t_1}$$ where, $v_2$ is velocity at time $t_2$ and $v_1$ is velocity at time $t_1$.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Instantaneous Acceleration<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The acceleration of a particle at a particular instant of time is given by instantaneous acceleration.<\/li>\n\n\n\n<li>It is also known as the limit of average acceleration as the time interval becomes infinitesimally small. Mathematically,$$a=\\lim_{\\Delta\\rightarrow0}\\frac{\\Delta v}{\\Delta t}=\\frac{dv}{dt}$$<\/li>\n\n\n\n<li>The limit of ratio $\\frac{\\Delta x}{\\Delta t}$ as $\\Delta t$ approaches zero is called the derivative of $x$ with respect to $t$ and is written as $dv\/dt$<\/li>\n\n\n\n<li>In the case of uniform acceleration, instantaneous acceleration equals average acceleration over that time period.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Equations of Motion<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>If the particle&#8217;s velocity changes at a constant rate, this rate of change of velocity with time is referred to as the <strong>constant acceleration<\/strong>.<\/li>\n\n\n\n<li>Equations of motion link an object&#8217;s displacement to its velocity, acceleration, and time.<\/li>\n\n\n\n<li>Although an object&#8217;s motion can take many different trajectories but here we will concentrate on motion in a straight line (or motion in one dimension).<\/li>\n\n\n\n<li>We can have positive and negative displacement, velocity, and acceleration. Negative quantities point in the opposite direction as positive quantities.<\/li>\n\n\n\n<li>The following equations are for motion with constant acceleration $a$, initial velocity $u$, and final velocity $v$. The acceleration happens over time $t$, and the displacement from the original position is $s$.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><a href=\"https:\/\/physicscatalyst.com\/article\/wp-content\/uploads\/2022\/06\/equation-of-motion.png\"><img loading=\"lazy\" decoding=\"async\" width=\"877\" height=\"404\" src=\"https:\/\/physicscatalyst.com\/article\/wp-content\/uploads\/2022\/06\/equation-of-motion.png\" alt=\"Motion In a Straight Line class 11 Notes\" class=\"wp-image-7189\" style=\"width:653px;height:auto\"\/><\/a><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Motion under gravity<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">Free Fall<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>In the absence of air resistance, all bodies fall with the same acceleration near the surface of the earth.<\/li>\n\n\n\n<li>This motion of a body falling towards the earth from a small height is called free fall.<\/li>\n\n\n\n<li>The acceleration with which the body falls is called acceleration due to gravity and is denoted by $g$. ($g=9.8m\/s^2$ near the surface of the earth)<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Free Fall Equations of motion<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Following are the equations of motion for a freely falling body:\n<ol class=\"wp-block-list\">\n<li>$v=u+gt$<\/li>\n\n\n\n<li>$s=ut+\\frac{1}{2}gt^2$<\/li>\n\n\n\n<li>$v^2-u^2=2gs$<\/li>\n<\/ol>\n<\/li>\n\n\n\n<li>When a body falls freely under the action of gravity, its velocity increases and the value of g is taken as positive.<\/li>\n\n\n\n<li>When a body is thrown vertically upward, its velocity decreases and the value of g is taken as negative.<\/li>\n\n\n\n<li>For a body thrown vertically upward with initial velocity u, we have\n<ul class=\"wp-block-list\">\n<li>Maximum Height reached : $h=\\frac{u^2}{2g}$<\/li>\n\n\n\n<li>Time of ascent = Time of descent $=\\frac{u}{g}$<\/li>\n\n\n\n<li>Total time of flight to come back to the point of projection $=\\frac{2u}{g}$<\/li>\n\n\n\n<li>The velocity of fall at the point of projection $=u$<\/li>\n\n\n\n<li>Velocity attained by the body dropped through height$h$, $v=\\sqrt{2gh}$<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Relative Velocity<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The relative velocity of object A with respect to object B is defined as the rate at which its (object A) position changes with respect to object B.<\/li>\n\n\n\n<li>Mathematically, if $\\vec{v}_A$ and $\\vec{v}_B$ are the velocities of object A and B respectively then the relative velocity of A with respect to B is defined as $$\\vec{v}_{AB}=\\vec{v}_A-\\vec{v}_B$$<\/li>\n\n\n\n<li>Relative velocity of object B w.r.t. to object A $$\\vec{v}_{BA}=\\vec{v}_B-\\vec{v}_A$$<\/li>\n\n\n\n<li>The relative velocity of two objects moving in the same direction is equal to the difference in their speeds i.e., $$\\vec{v}_{AB}=\\vec{v}_A-\\vec{v}_B$$<\/li>\n\n\n\n<li>The relative velocity of two moving objects in opposite directions is the sum of their speeds i.e., $$\\vec{v}_{AB}=\\vec{v}_A+\\vec{v}_B$$<\/li>\n\n\n\n<li>When $\\vec{v}_A and \\vec{v}_B$ are inclined to each other at an angle $\\theta$, $$ \\vec{v}_{AB}=\\sqrt{v_A^2+v_B^2-2v_Av_B\\cos\\theta}$$<\/li>\n\n\n\n<li>If $\\vec{v}_{AB}$ makes an angle $\\beta$ with $v_A$, then $$\\tan\\beta=\\frac{v_B\\sin\\theta}{v_A-v_B\\cos\\theta}$$<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p class=\"has-background\" style=\"background-color:#f9f8ec\">Visit <a href=\"https:\/\/physicscatalyst.com\/article\/motion-in-a-straight-line-formulas\/\">Motion in a straight line formulas<\/a> page and get all the formulas of this chapter, a pdf file is also available for download.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In this article, you will get revision notes for topic motion in a straight-line class 11 notes for physics NCERT book chapter 2. It is important to note here that motion in a straight line is nothing but motion in one dimension. Such a type of motion is also called linear motion or rectilinear motion. [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[14],"tags":[],"class_list":["post-7178","post","type-post","status-publish","format-standard","hentry","category-physics"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Motion in a straight line notes for class 11, NEET and JEE physics<\/title>\n<meta name=\"description\" content=\"Complete Motion in a Straight Line Class 11 Physics notes with equations of motion, kinematics formulas, free fall problems for CBSE NCERT Chapter 2 preparation\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/physicscatalyst.com\/article\/motion-in-a-straight-line\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Motion in a straight line notes for class 11, NEET and JEE physics\" \/>\n<meta property=\"og:description\" content=\"Complete Motion in a Straight Line Class 11 Physics notes with equations of motion, kinematics formulas, free fall problems for CBSE NCERT Chapter 2 preparation\" \/>\n<meta property=\"og:url\" content=\"https:\/\/physicscatalyst.com\/article\/motion-in-a-straight-line\/\" \/>\n<meta property=\"og:site_name\" content=\"physicscatalyst&#039;s Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/PhysicsCatalyst\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/PhysicsCatalyst\" \/>\n<meta property=\"article:published_time\" content=\"2022-06-15T17:10:55+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-09-26T07:48:35+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/physicscatalyst.com\/article\/wp-content\/uploads\/2022\/06\/Distance-and-Displacement.png\" \/>\n\t<meta property=\"og:image:width\" content=\"457\" \/>\n\t<meta property=\"og:image:height\" content=\"380\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"physicscatalyst\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"physicscatalyst\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"9 minutes\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Motion in a straight line notes for class 11, NEET and JEE physics","description":"Complete Motion in a Straight Line Class 11 Physics notes with equations of motion, kinematics formulas, free fall problems for CBSE NCERT Chapter 2 preparation","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/physicscatalyst.com\/article\/motion-in-a-straight-line\/","og_locale":"en_US","og_type":"article","og_title":"Motion in a straight line notes for class 11, NEET and JEE physics","og_description":"Complete Motion in a Straight Line Class 11 Physics notes with equations of motion, kinematics formulas, free fall problems for CBSE NCERT Chapter 2 preparation","og_url":"https:\/\/physicscatalyst.com\/article\/motion-in-a-straight-line\/","og_site_name":"physicscatalyst&#039;s Blog","article_publisher":"https:\/\/www.facebook.com\/PhysicsCatalyst","article_author":"https:\/\/www.facebook.com\/PhysicsCatalyst","article_published_time":"2022-06-15T17:10:55+00:00","article_modified_time":"2025-09-26T07:48:35+00:00","og_image":[{"width":457,"height":380,"url":"https:\/\/physicscatalyst.com\/article\/wp-content\/uploads\/2022\/06\/Distance-and-Displacement.png","type":"image\/png"}],"author":"physicscatalyst","twitter_misc":{"Written by":"physicscatalyst","Est. reading time":"9 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/physicscatalyst.com\/article\/motion-in-a-straight-line\/#article","isPartOf":{"@id":"https:\/\/physicscatalyst.com\/article\/motion-in-a-straight-line\/"},"author":{"name":"physicscatalyst","@id":"https:\/\/physicscatalyst.com\/article\/#\/schema\/person\/9b302efdc9b32e459cb1e61ab7506d3f"},"headline":"Motion in a Straight Line Class 11 Physics Notes CBSE NCERT Chapter 2","datePublished":"2022-06-15T17:10:55+00:00","dateModified":"2025-09-26T07:48:35+00:00","mainEntityOfPage":{"@id":"https:\/\/physicscatalyst.com\/article\/motion-in-a-straight-line\/"},"wordCount":1921,"commentCount":0,"publisher":{"@id":"https:\/\/physicscatalyst.com\/article\/#organization"},"image":{"@id":"https:\/\/physicscatalyst.com\/article\/motion-in-a-straight-line\/#primaryimage"},"thumbnailUrl":"https:\/\/physicscatalyst.com\/article\/wp-content\/uploads\/2022\/06\/Distance-and-Displacement.png","articleSection":["Physics"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/physicscatalyst.com\/article\/motion-in-a-straight-line\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/physicscatalyst.com\/article\/motion-in-a-straight-line\/","url":"https:\/\/physicscatalyst.com\/article\/motion-in-a-straight-line\/","name":"Motion in a straight line notes for class 11, NEET and JEE physics","isPartOf":{"@id":"https:\/\/physicscatalyst.com\/article\/#website"},"primaryImageOfPage":{"@id":"https:\/\/physicscatalyst.com\/article\/motion-in-a-straight-line\/#primaryimage"},"image":{"@id":"https:\/\/physicscatalyst.com\/article\/motion-in-a-straight-line\/#primaryimage"},"thumbnailUrl":"https:\/\/physicscatalyst.com\/article\/wp-content\/uploads\/2022\/06\/Distance-and-Displacement.png","datePublished":"2022-06-15T17:10:55+00:00","dateModified":"2025-09-26T07:48:35+00:00","description":"Complete Motion in a Straight Line Class 11 Physics notes with equations of motion, kinematics formulas, free fall problems for CBSE NCERT Chapter 2 preparation","breadcrumb":{"@id":"https:\/\/physicscatalyst.com\/article\/motion-in-a-straight-line\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/physicscatalyst.com\/article\/motion-in-a-straight-line\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/physicscatalyst.com\/article\/motion-in-a-straight-line\/#primaryimage","url":"https:\/\/physicscatalyst.com\/article\/wp-content\/uploads\/2022\/06\/Distance-and-Displacement.png","contentUrl":"https:\/\/physicscatalyst.com\/article\/wp-content\/uploads\/2022\/06\/Distance-and-Displacement.png"},{"@type":"BreadcrumbList","@id":"https:\/\/physicscatalyst.com\/article\/motion-in-a-straight-line\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/physicscatalyst.com\/article\/"},{"@type":"ListItem","position":2,"name":"Physics","item":"https:\/\/physicscatalyst.com\/article\/physics\/"},{"@type":"ListItem","position":3,"name":"Motion in a Straight Line Class 11 Physics Notes CBSE NCERT Chapter 2"}]},{"@type":"WebSite","@id":"https:\/\/physicscatalyst.com\/article\/#website","url":"https:\/\/physicscatalyst.com\/article\/","name":"physicscatalyst's Blog","description":"Learn free for class 9th, 10th science\/maths , 12th and IIT-JEE Physics and maths.","publisher":{"@id":"https:\/\/physicscatalyst.com\/article\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/physicscatalyst.com\/article\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/physicscatalyst.com\/article\/#organization","name":"physicscatalyst","url":"https:\/\/physicscatalyst.com\/article\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/physicscatalyst.com\/article\/#\/schema\/logo\/image\/","url":"https:\/\/physicscatalyst.com\/article\/wp-content\/uploads\/2024\/08\/cropped-logo-1.jpg","contentUrl":"https:\/\/physicscatalyst.com\/article\/wp-content\/uploads\/2024\/08\/cropped-logo-1.jpg","width":96,"height":96,"caption":"physicscatalyst"},"image":{"@id":"https:\/\/physicscatalyst.com\/article\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/PhysicsCatalyst","https:\/\/x.com\/physicscatalyst","https:\/\/www.youtube.com\/user\/thephysicscatalyst","https:\/\/www.instagram.com\/physicscatalyst\/"]},{"@type":"Person","@id":"https:\/\/physicscatalyst.com\/article\/#\/schema\/person\/9b302efdc9b32e459cb1e61ab7506d3f","name":"physicscatalyst","sameAs":["https:\/\/physicscatalyst.com","https:\/\/www.facebook.com\/PhysicsCatalyst","https:\/\/x.com\/physicscatalyst"]}]}},"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"shareaholic-thumbnail":false},"uagb_author_info":{"display_name":"physicscatalyst","author_link":"https:\/\/physicscatalyst.com\/article\/author\/physicscatalyst\/"},"uagb_comment_info":0,"uagb_excerpt":"In this article, you will get revision notes for topic motion in a straight-line class 11 notes for physics NCERT book chapter 2. It is important to note here that motion in a straight line is nothing but motion in one dimension. Such a type of motion is also called linear motion or rectilinear motion.&hellip;","_links":{"self":[{"href":"https:\/\/physicscatalyst.com\/article\/wp-json\/wp\/v2\/posts\/7178","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/physicscatalyst.com\/article\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/physicscatalyst.com\/article\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/physicscatalyst.com\/article\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/physicscatalyst.com\/article\/wp-json\/wp\/v2\/comments?post=7178"}],"version-history":[{"count":21,"href":"https:\/\/physicscatalyst.com\/article\/wp-json\/wp\/v2\/posts\/7178\/revisions"}],"predecessor-version":[{"id":9789,"href":"https:\/\/physicscatalyst.com\/article\/wp-json\/wp\/v2\/posts\/7178\/revisions\/9789"}],"wp:attachment":[{"href":"https:\/\/physicscatalyst.com\/article\/wp-json\/wp\/v2\/media?parent=7178"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/physicscatalyst.com\/article\/wp-json\/wp\/v2\/categories?post=7178"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/physicscatalyst.com\/article\/wp-json\/wp\/v2\/tags?post=7178"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}