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A person standing on the floor of an elevator drops a coin. The coin reaches the floor of the elevator in a time $t_{1}$ if the elevator is stationary and in time $t_{2}$ if it is moving with constant velocity, Then-

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Important Questions on Kinematics

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Alpha Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise-1>Q 199

A train is moving in the north at a speed

10 m \sec^{- 1} .

Its length is

150 m .

A parrot is flying parallel to the train in the south with a speed of

5 m s^{- 1} .

The time taken by the parrot to cross the train will be-

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Alpha Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise-1>Q 200

Two cars are moving in the same direction with the same speed

30 km / hr

. They are separated by a distance of

5 km

, the speed of a car moving in the opposite direction if it meets these two cars at an interval of $4$ minutes, will be

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Alpha Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise-1>Q 201

A stone is thrown upwards from a tower with a velocity

50 {ms}^{- 1}

. Another stone is simultaneously thrown downwards from the same location with a velocity

50 {m s}^{- 1} .

When the first stone is at the highest point, the relative velocity of the second stone w.r.t. the first stone is (assume that second stone has not yet reached the ground):

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Alpha Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise-1>Q 202

A thief is running away on a straight road in a jeep moving with a speed of

9 m s^{- 1}

. A policeman chases him on a motorcycle moving at a speed of

10 m s^{- 1}

. If the instantaneous separation of the jeep from the motorcycle is

100 m

, how long will it take for the policeman to catch the thief?

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Alpha Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise-1>Q 203

A body is thrown up in a lift with a velocity

u

relative to the lift and the time of flight is found to be

t

. The acceleration with which the lift is moving up is

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Alpha Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise-1>Q 204

Two trains

A

and

B

, which are

100 km

apart, are travelling towards each other on different tracks with each having an initial speed of

50 km h^{- 1}

. The train

A

accelerates at

20 km h^{- 2}

and the train

B

retards at the rate of

20 km h^{- 2}

. The distance covered by train

A

when they cross each other is

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Alpha Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise-1>Q 205

A bus is moving with a speed of

10 m s^{- 1}

on a straight road. A scooterist wishes to overtake the bus in

100 s

. If the bus is at a distance of

1 km

from the scooterist, with what speed should the scooterist chase the bus?

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Alpha Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise-1>Q 206

120 m

long train is moving towards west with a speed of

10 m / s

. A bird flying towards east with a speed of

5 m / s

crosses the train. The time taken by the bird to cross the train will be -

A person standing on the floor of an elevator drops a coin. The coin reaches the floor of the elevator in a time t1 if the elevator is stationary and in time t2 if it is moving with constant velocity, Then-

Important Questions on Kinematics

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A person standing on the floor of an elevator drops a coin. The coin reaches the floor of the elevator in a time $t_{1}$ if the elevator is stationary and in time $t_{2}$ if it is moving with constant velocity, Then-