A ball is dropped vertically from a height 
above the ground. It hits the ground and
bounces up vertically to a height 
. Neglecting subsequent motion and air resistance, its velocity 
varies with the height 
above the ground can be plotted as
Text Solution
Verified by ExpertsA
For the given condition, initial height 
and velocity of the ball is zero. When the bal
moves downward, its velocity increases and it will be maximum, when the ball hits the ground and just after the collision, it becomes half and in opposite direction. As the ball moves upwards, its velocity again decreases and becomes zero at height 
. This explanation match with graph .
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