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A stone is dropped from a running bus. It will hit the ground in a-

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Important Questions on Kinematics

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Alpha Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise-4>Q 20
A bucket is placed in the open where the rain is falling vertically and wind is flowing horizontally. If the wind begins to blow at double the velocity of the rain, then how will the rate of filling of the bucket change?
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Alpha Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise-4>Q 21
A man can swim with velocity v relative to water. He has to cross a river of width d flowing with a velocity u(u>v). The distance through which he is carried downstream by the river is x. Which of the following statement is correct?
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Alpha Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise-4>Q 22
Two observers A and B are moving opposite to each other on a parallel track, separated by a distance d, with the same speed. When they are at the shortest distance, a particle is thrown horizontally from some height from the ground by A towards B with respect to itself. The path of the particle observed by B is -
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Alpha Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise-4>Q 23

A cyclist observes a passenger in a bus. He finds that the passenger closed his glass window displacing 20 cm in forward direction with constant speed in 1 sec. Bus overtakes the cyclist in 3 sec. Initially he was at the middle of the bus as shown in the figure. Length of the bus is 18 m. Both cyclist and bus are moving with constant speed in the same direction. Then the velocity of the glass window with respect to cyclist was:

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Alpha Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise-4>Q 24
A boat moving towards east with velocity 4 m s-1 with respect to still water, and the river is flowing towards north with velocity 2 m s-1, and the wind is blowing towards north with velocity 6 m s-1. The direction of the flag blown over by the wind hoisted on the boat is
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Alpha Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise-4>Q 25
Man A is sitting in a car moving with a speed of 54 km h-1 observed a man B in front of the car crossing perpendicularly a road of width 15 m in three seconds. Then what will be the velocity of man B? (in m s-1)
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Alpha Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise-4>Q 26
A river is flowing with a velocity of 1 m sec-1 toward east direction. When the boat runs with a velocity of 3 m s-1 relative to the river in the direction of the river flow, the flag on the boat flutter in the north direction. If the boat runs with the same speed but in the north direction relative to the river, the flag flutters towards the northeast direction. The actual velocity of the wind (relative to the ground) should be: ( i^= east direction and j^= north direction)
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Alpha Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise-4>Q 27
Hail stones falling vertically with a speed of 123 m/s hits the windscreen which makes an angle 30° with the horizontal. If car is running at velocity V (in m/s) so that the driver find the hail stone striking perpendicular to the windscreen. Find the value of V/2?