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Questions  

 If the coefficient of restitution between a ball and the floor is 0.5, what is the percentage loss of energy on each rebounding of a ball dropped from a height ?

a
12.5%
b
25%
c
50%
d
75%

detailed solution

Correct option is D

we know that e=v1−0v−0=v1v  or  0⋅5=v1/v  or  v1=0⋅5V Percentage loss of K.E' is given bY 12mv2−12mv1212mv2×100=v2−(0⋅5v)2v2×100 =34×100=75%

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