Conceptual Motion Problems and Solution

Given below are the CBSEConceptual Questions and answers on Motion for Class 9 physics
(a) Very Short questions
(b) True and false (c) Short questions
(d) Long answer questions
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Very Short Answer Based questions for Motion

Question 1.
  1. What is unit of acceleration?
  2. What is zero uniform velocity motion?
  3. A body moving in a circle with constant speed. Is it having acceleration?
  4. A body goes from point A to B and then return then from B to A. what is the total displacement?
  5. Acceleration is a vector quantity True or false?
  6. What is the path of a velocity –time graph of a body moving with uniform acceleration
  7. What all ways the velocity of the body can be changed?
  8. What is average speed?

True and False

Question 2.
True and False Statements
A. Displacement can be zero but distance never
B. Displacement magnitude can be greater than distance travelled by the object
C. Time is a vector quantity
D. If the velocity of the body decreases with time, the acceleration is negative (retardation), and the motion is called decelerated motion
E. The area of the velocity time graph gives displacement of the body
F. Acceleration is a scalar quantity
G. Motion and rest are relative terms
I. an object can be moving with Uniform speed but variable acceleration

Short Answer type

Question 3.
A object goes from point X to Y and then come back from Y to X. What is the displacement and average velocity?

Question 4.
Write down the difference between Scalars and Vectors?

Question 5.
Four Cyclist A,B,C ,D starts at the same point and at the same time and move in a straight line to reach destination .They all move with uniform velocities. They reach the destination in the following order
\(C \to A \to B \to D\)
Answer the following questions
a. If the displacement-time graph is plotted for each cyclist, which will be having highest slope
b. Arrange the cyclist in decreasing order of velocity

Question 6.
What do you infer if ?
Distance –time graph is straight line         
2 Velocity –time graph is curved         
3 Displacement –time is zig zag         

Question 7.
What is the difference between Uniform Accelerated and Non Uniform accelerated motion?

Question 8.
What happens to speed, velocity acceleration when an object moves in a circle with uniform speed?

Question 9.
When an object is thrown upwards, what is true of velocity and acceleration at the highest point of motion of the object?

Question 10.
Gave the formula for each

Question 11.
Difference between Speed and Velocity?

Question 12.
Explain why is difficult for a fireman to hold a house, which ejects large amounts of water at a high velocity?

Question 13.
Differentiate between uniform acceleration and non uniform acceleration? Define one Newton.

Question 14.
What happens when we accidentally step on a peel of banana? Explain with reference to Newton’s law of motion.


This conceptual questions of physics class 9 chapter 8 is prepared keeping in mind the latest syllabus of CBSE . This has been designed in a way to improve the academic performance of the students. If you find mistakes , please do provide the feedback on the mail. You can also find the pdf for download
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