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A positive acceleration means an increase in velocity with time.

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Important Questions on Velocity and Acceleration

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Mathematics (9709)>P-4: Mechanics>Velocity and Acceleration>Acceleration
An object is moving along a straight path, with an accelerated motion. The correct statement about the object is.
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Mathematics (9709)>P-4: Mechanics>Velocity and Acceleration>Acceleration
When a body falls freely, it has a _____ acceleration. (Uniform/non-uniform) 
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Mathematics (9709)>P-4: Mechanics>Velocity and Acceleration>Acceleration
The total time taken by the stone thrown vertically upwards with a speed of 9.8 m s-1 to reach back to the point from which it is thrown is _____ s. g=9.8 m s-2
EASY
Mathematics (9709)>P-4: Mechanics>Velocity and Acceleration>Acceleration
Starting from a stationary position, Rahul starts pedalling his bicycle to attain a velocity of 6 m s-1 in 30 s. Then its acceleration is _____.
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Mathematics (9709)>P-4: Mechanics>Velocity and Acceleration>Acceleration
A body is released from a great height and falls freely towards the Earth. Exactly one second later another body is released. What is the distance between the two bodies 2 s after the release of the second body?
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Mathematics (9709)>P-4: Mechanics>Velocity and Acceleration>Acceleration
If a body moves with uniform velocity, its acceleration is _____. 
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Mathematics (9709)>P-4: Mechanics>Velocity and Acceleration>Acceleration
m s-2 is the S.I. unit of :
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Mathematics (9709)>P-4: Mechanics>Velocity and Acceleration>Acceleration
Unit of g is _____. (metre per second/ metre per second squared/ kilometre second/ kilometre per second).
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Mathematics (9709)>P-4: Mechanics>Velocity and Acceleration>Acceleration
The unit  ms2  is of 
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Mathematics (9709)>P-4: Mechanics>Velocity and Acceleration>Acceleration
An acceleration of 5 m s-2 means a change in velocity of _____ m s-1 in one second.
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Mathematics (9709)>P-4: Mechanics>Velocity and Acceleration>Acceleration
Which of the following is a unit of acceleration?
MEDIUM
Mathematics (9709)>P-4: Mechanics>Velocity and Acceleration>Acceleration
Water drops fall at regular intervals from a tap 5 m above the ground. The third drop is leaving the tap at the instant the first drop touches the ground. How far above the ground is the second drop at that instant? (Take g=10 m s-2)
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Mathematics (9709)>P-4: Mechanics>Velocity and Acceleration>Acceleration

First equation of motion does not contain the physical quantity, named _____.

(displacement/velocity/time)

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Mathematics (9709)>P-4: Mechanics>Velocity and Acceleration>Acceleration
A boy in a moving bus throws a ball upwards, the ball falls behind him. It shows that the bus is in
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Mathematics (9709)>P-4: Mechanics>Velocity and Acceleration>Acceleration
The time taken for a stone to reach the highest point of its journey when thrown vertically upwards with a speed of 9.8 m s-1 is _____ s.
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Mathematics (9709)>P-4: Mechanics>Velocity and Acceleration>Acceleration
The rate of change of velocity is called _____.
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Mathematics (9709)>P-4: Mechanics>Velocity and Acceleration>Acceleration

The direction of acceleration is same as that of _____.

(force/torque)

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Mathematics (9709)>P-4: Mechanics>Velocity and Acceleration>Acceleration
For a freely falling body, the acceleration is _____ m s-2.
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Mathematics (9709)>P-4: Mechanics>Velocity and Acceleration>Acceleration
Equations of motion are used for bodies under _____ (constant/ varying) acceleration.
HARD
Mathematics (9709)>P-4: Mechanics>Velocity and Acceleration>Acceleration
A particle moves in x-y plane. The position vector of particle at any time t is r → = (2t) i ^ + 2t 2 j ^ m.  The rate of change of θ at time t = 2 s. (where θ is the angle which its velocity vector makes with positive x-axis) is