- Introduction
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- Position and Displacement
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- Average velocity and speed
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- Instantaneous velocity and speed
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- Acceleration
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- Motion with constant acceleration
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- Free fall acceleration
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- Relative velocity
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- Solved Examples Part 1
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- Solved Examples Part 2
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- Solved Examples Part 3
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- Solved Examples Part 4
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- Solved Examples Part 5

- Position Distance and Displacement
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- Average velocity and speed
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- Velocity and acceleration
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- Uniformly accelerated motion
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- Relative Velocity
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- Kinematics Question 1
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- Kinematics Question 2

a. (ab/a+b)t

b.(a+b/ab)t

c. (a

d.(a

. Let t

Let v be the maximum velocity attained

Then

v=at

v=bt

Now t=t

or t=v/a + v/b

or v=abt/(a+b)

Hence (a) is correct

y=2t+t

The velocity of the particle when acceleration is zero is given by

a. 5/2

b. 9/4

c. 13/6

d. 17/8

. given

y=2t+t

Velocity is given

v=dy/dt=2+2t-6t

a=dv/dt=2-12t

Now acceleratio is zero

2-12t=0

t=1/6

Putting this value velocity equation

v=2+2/6-6(1/6)

=2+1/3-1/6

=13/6

Hence (c) is correct

a. Instantaneous Velocity vector is always in the direction of the motion

b. Instantaneous acceleration vector is always in the direction of the motion

c. Acceleration of the moving particle can change its direction without any change in direction of velocity

d. None of the above

. Take the case of uniform circular motion,Instantanous Velocity vector and acceleration vector at any point is tangent and radial to the circle.So it is not along the direction of the circle

Take the case the moving car in one direction.If the car accelerated,acceleration is along the direction of velocity.if car driver put a brake then it deacclerates without any change in the direction of the velocity

Hence (c) is correct

A) Graph between displacement and time

B) Graph between velocity and time

C) Graph between velocity and displacement

D) Graph between KE and displacement

P) Parabola

Q) Straight line

C) Circle

D) No appropiate match given

. Equation of motion for a free fall from rest

x=(1/2)gt

v=gt it is a straight line

v

KE=(1/2)mv

So the correct answers are A -> P

B -> Q

C -> P

D -> Q

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