A boy sitting in a rail road car throws a ball straight up into the air. The ball will fall back into his hands when the rail road car is

Applied Mechanics Mcqs

A.moving at constant velocity
B.accelerating forwardA block A is dropped down a smooth inclined plane, while another identical block B is released for free fall from the same height
C.decelerating
D.accelerating forward while going around a curve of radius equal to the maximum height attained by the ball

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