Questions  

A tennis ball dropped from a height of 2 m rebounds only 1.5 m after hitting the ground. What fraction of its energy is lost in the impact

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By Expert Faculty of Sri Chaitanya
ctaimg
a
14
b
12
c
13
d
18
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detailed solution

Correct option is A

Fractional loss =ΔUU=mg(h−h')mgh=2−1.52=14


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