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Variation of G Due to the Rotation of Earth

32. a ball is...

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32. a ball is bouncing elastically with a speed of 1 m/s between walls of a railway compartment of size 10m in a direction perpendicular to the walls . the train is moving at a constant velocity of 10 m/s parallel to the direction of motion of the ball. as seen from the ground, 1. the direction of motion of the ball changes every 10 seconds 2. the speed of the ball changes every 10 seconds. 3.average speed of the ball over any 20 second interval is fixed. 4.the acceleration fo the ball is the same as from the train

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