A)
B)
C)
D)
Correct Answer: A
Solution :
[a] For the given condition, initial height h=d and velocity of the ball is zero, when the ball moves downward its velocity increases and it will be maximum when the ball hits the ground; just after the collision, it becomes half and in opposite direction. As the ball moves upward, its velocity again decreases and becomes zero at height d/2. This explanation match with graph [a].
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