A Text Book of PHYSICS PART I : CLASS 11>Chapter 5 - Motion of a Particle>EXERCISE>Q 18

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The displacement of a particle moving in a straight line is given by $S = (t^{3} - 6 t^{2} + 3 t + 4) m$ . When there is no acceleration, the velocity is

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Important Questions on Motion of a Particle

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IMPORTANT

A Text Book of PHYSICS PART I : CLASS 11>Chapter 5 - Motion of a Particle>EXERCISE>Q 19

A particle located at

x = 0

at time

t = 0

, starts moving along the

+ v e x

direction with a velocity

v

that varies as

v = a \sqrt{x}

. The displacement of the particle varies with time as

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A Text Book of PHYSICS PART I : CLASS 11>Chapter 5 - Motion of a Particle>EXERCISE>Q 20

A box moves along a straight line by a machine delivering constant power. The distance moved by the body in time

t

is proportional to

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A Text Book of PHYSICS PART I : CLASS 11>Chapter 5 - Motion of a Particle>EXERCISE>Q 21

The distance travelled by a body moving along a straight line at time

t

is given by

S = 3 - 4 t + 5 t^{2}

. The initial velocity of the body is

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A Text Book of PHYSICS PART I : CLASS 11>Chapter 5 - Motion of a Particle>EXERCISE>Q 22

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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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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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

is

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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