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11th West Bengal Board

IMPORTANT

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A boat is moving with a velocity of $3 \hat{i} + 4 \hat{j}$ w.r.t ground. The water in the river is moving with a velocity of $- 3 \hat{i} - 4 \overset{⏜}{j}$ w.r.t. ground. The relative velocity of the boat w.r.t water is:

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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 59

A train of

150 m

length is going towards north direction at a speed of

10 {ms}^{- 1}

. A parrot flies at a speed of

5 {ms}^{- 1}

towards south direction parallel to the railway track.The time taken by the parrot to cross the train is equal to

HARD

11th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART I : CLASS 11>Chapter 5 - Motion of a Particle>EXERCISE>Q 60

A boat covers a given distance in

6

hour moving downstream of a river. It covers the same distance in

10

hours moving upstream. What time would it take to cover the same distance in still water ?

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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 61

A river is flowing from west to east at a speed of

5

metre per minute. A man on the south bank of the river, capable of swimming at

10

metre per minute in still water, wants to swim accross the river in the shortest time. He should swim in a direction

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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 62

A police car is travelling in a straight line with a constant speed

v

. A truck travelling in the same direction with constant velocity

\frac{3 v}{2}

passes the police car at

t = 0

. The police car starts accelerating

10 s

after passing the truck, at a constant rate of

3 m / s^{2}

, while the truck continues to move at constant speed. If the police car takes

10 s

further to catch the truck, find the value of

v

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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 63

A bus begins to move with an acceleration of

1 {ms}^{- 2}

. A man who is

48 m

behind the bus runs at

10 {ms}^{- 1}

to catch the bus. The man will be able to catch the bus after:

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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 64

Two cars

A

and

B

are travelling in the same direction with velocities

v_{1}

and

v_{2} (v_{1} > v_{2})

. When the car

A

is at

a

distance

d

behind the car

B

, the driver of the car

A

applies the break producing uniform retardation

a

. There will be no collision when.

MEDIUM

11th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART I : CLASS 11>Chapter 5 - Motion of a Particle>EXERCISE>Q 65

Two boys are standing at the ends

A

and

B

of a ground where

A B = a

. The boy at

B

starts running in a direction perpendicular to

A B

with velocity

v_{1}

. The boy at

A

starts running simultaneously with velocity

v

and catches the other boy at time

t

, when

t

is:

HARD

11th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART I : CLASS 11>Chapter 5 - Motion of a Particle>EXERCISE>Q 66

Two particles are projected with the same initial velocity, one making an angle $θ$ with the horizontal and the other making an angle $θ$ with the vertical. If their common range is $R$ , then product of time of flight is directly proportional to:

A boat is moving with a velocity of 3i^+4j^ w.r.t ground. The water in the river is moving with a velocity of -3i^-4j⏜ w.r.t. ground. The relative velocity of the boat w.r.t water is:

Important Questions on Motion of a Particle

Learn and Prepare for any exam you want !

A boat is moving with a velocity of $3 \hat{i} + 4 \hat{j}$ w.r.t ground. The water in the river is moving with a velocity of $- 3 \hat{i} - 4 \overset{⏜}{j}$ w.r.t. ground. The relative velocity of the boat w.r.t water is: