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The acceleration a (in ${ms}^{- 2}$ ) of a body, starting from rest varies with time $t$ (in $s$ ) following the equation $a = 3 t + 4$ . The velocity of the body at time $t = 2 s$ will be

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Important Questions on Motion of a Particle

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11th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART I : CLASS 11>Chapter 5 - Motion of a Particle>EXERCISE>Q 23

A particle is moving in a circular path with a constant speed

v

. What is the magnitude of average velocity after half rotation ?

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A Text Book of PHYSICS PART I : CLASS 11>Chapter 5 - Motion of a Particle>EXERCISE>Q 24

The motion of a particle along a straight line is described by the equation :

x = 8 + 12 t - t^{3}

, where

x

is in metre and

t

is in second. The retardation of the particle when its velocity becomes zero, is

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IMPORTANT

A Text Book of PHYSICS PART I : CLASS 11>Chapter 5 - Motion of a Particle>EXERCISE>Q 25

A boat which has a speed of

5 km / h

in still water crosses a river of width

1 km

along the shortest possible path in

15

minute. The velocity of the river water in

km / hr

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A Text Book of PHYSICS PART I : CLASS 11>Chapter 5 - Motion of a Particle>EXERCISE>Q 26

A body projected from the ground moves in a parabolic path. The velocity of the projectile at the top of the path is

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A Text Book of PHYSICS PART I : CLASS 11>Chapter 5 - Motion of a Particle>EXERCISE>Q 27

A body falling freely from a given height

H

hits an inclined plane in its path at a height h. As a result of this impact, the direction of the velocity of the body becomes horizontal. If the body takes maximum time to reach the ground the ratio

\frac{h}{H}

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11th West Bengal Board

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A Text Book of PHYSICS PART I : CLASS 11>Chapter 5 - Motion of a Particle>EXERCISE>Q 28

From the top of a tower, a stone is let fall. During last

1

second of its fall the stone clears

\frac{5}{9} t h

of the height of the tower. The time of fall of the stone is

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11th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART I : CLASS 11>Chapter 5 - Motion of a Particle>EXERCISE>Q 29

When a ball is thrown vertically upward from the top point

A

of a tower, it takes

t_{1}

second to hit the ground. If it is thrown downward from

A

with same velocity it takes

t_{2}

second to hit the ground. If the stone is allowed to fall freely from

A

, the time it will take to reach the ground is

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11th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART I : CLASS 11>Chapter 5 - Motion of a Particle>EXERCISE>Q 30

A body is thrown vertically upward. The two instants when the body will reach

\frac{3}{4} t h

of the greatest height, are in the ratio of

The acceleration a (in ms-2) of a body, starting from rest varies with time t (in s) following the equation a=3t+4. The velocity of the body at time t=2s will be

Important Questions on Motion of a Particle

Learn and Prepare for any exam you want !

The acceleration a (in ${ms}^{- 2}$ ) of a body, starting from rest varies with time $t$ (in $s$ ) following the equation $a = 3 t + 4$ . The velocity of the body at time $t = 2 s$ will be