A) 10 m
B) 8 m
C) 4 m
D) 6 m
Correct Answer: D
Solution :
\[mgh=\] initial potential energy \[mg{h}'=\] final potential energy after rebound As 40% energy lost during impact \mgh'=60% of mgh Þ \[h'=\frac{60}{100}\times h=\frac{60}{100}\times 10=6\,m\]You need to login to perform this action.
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