answer it by sending whole solution
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Energy with which it falls from height h is
E = mgh
There is a loss of 60% of E. So, it will rebounds with 40% of E.
40% of E = mgh’
40/100 × mgh = mgh’
40/100 × h = h’
h’ = 2h/5
∴ (2) is the correct option.
E = mgh
There is a loss of 60% of E. So, it will rebounds with 40% of E.
40% of E = mgh’
40/100 × mgh = mgh’
40/100 × h = h’
h’ = 2h/5
∴ (2) is the correct option.
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answer is (2h/5) , and doubt reply
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