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A train moves in north direction with a speed of $54 {km h}^{- 1}$ . A monkey is running on the roof of the train, against its motion with a velocity of $18 km h^{- 1}$ , with respect to train. The velocity of monkey as observed by a man standing on the ground is:

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Important Questions on Kinematics

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Beta Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise (Conceptual Questions)>Q 204

A tennis ball is dropped on the floor from a height of

20 m

. It rebounds to a height of

5 m

. The ball was in contact with third floor for

0.01 s

. What was its average acceleration during the contact ?

(g = 10 m s^{- 2})

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Beta Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise (Conceptual Questions)>Q 205

A boy sitting on the upper berth in the compartment of a train, which is about to stop at a railway station, drops an apple aiming at the open hand of his brother vertically below his hands at a distance of about

2 m .

The apple will fall:-

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Beta Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise (Conceptual Questions)>Q 206

A stone tied to the end of a string

1 m

long is whirled in a horizontal circle with constant speed. If the stone makes

22

revolutions in

44 s

, what is the magnitude and direction of acceleration of the stone?

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Beta Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise (Conceptual Questions)>Q 207

A body tied to astring of length L is revolved in a vertical circle with minimum velocity, when the body reaches the upper most point the string breaks and the body moves under the influence of the gravitational field of earth along a parabolic path. The horizontal range AC of the body will be :-
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Beta Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise (Conceptual Questions)>Q 208

A mass tied to a string moves in a vertical circle with a uniform speed of

5 m s^{- 1}

as shown. At the point

P

the string breaks. The mass will reach a height above P of nearly (

g = 10 m s^{- 2}

)

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Beta Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise (Previous Year Questions)>Q 1

A lift is moving downwards with acceleration

a

. A man in the lift drops a ball within the lift. The acceleration of the ball as observed by the man in the lift and a man standing stationary on the ground are respectively:

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Beta Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise (Previous Year Questions)>Q 2

A boat takes

2

hours to go

8 km

and come back in still water lake. The time taken for going

8 km

upstream and coming back with water velocity of

4 km h^{- 1}

is :

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Beta Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise (Previous Year Questions)>Q 3

Four persons $P, Q, R$ and $S$ of same mass travel with same speed $u$ along a square of side ’ $d$ ’ such that each one always faces the other. After what time will they meet each other?

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A train moves in north direction with a speed of 54 km h-1. A monkey is running on the roof of the train, against its motion with a velocity of 18 km h-1, with respect to train. The velocity of monkey as observed by a man standing on the ground is:

Important Questions on Kinematics

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A train moves in north direction with a speed of $54 {km h}^{- 1}$ . A monkey is running on the roof of the train, against its motion with a velocity of $18 km h^{- 1}$ , with respect to train. The velocity of monkey as observed by a man standing on the ground is: