Work Energy and Power - Result Question 49
52. A ball is thrown vertically downwards from a height of with an initial velocity . It collides with the ground loses 50 percent of its energy in collision and rebounds to the same height. The initial velocity is : [2015 RS] (Take )
(a)
(c)
(b)
(d)
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Answer:
Correct Answer: 52. (a)
Solution:
- (a) When ball collides with the ground it loses its
of energy
or
or,
or,