lf the energy of a ball falling from a height of 10 meter is reduced by 40% how high will it rebound
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given height=10m
mass= m
acceleration due to gravity=1 0m/s square
U=m.g.h
=m*10*10=100m (m stands for mass which is unkown)
here 40% of energy lost
I.e. 40% of 100m=40m
here energy left=100m-40m=60m
therefore....height to which ball can be rebound=
U=m.g.h
60m=mgh
m and m cancels
60=10*h
60/10=h
6m=h
mass= m
acceleration due to gravity=1 0m/s square
U=m.g.h
=m*10*10=100m (m stands for mass which is unkown)
here 40% of energy lost
I.e. 40% of 100m=40m
here energy left=100m-40m=60m
therefore....height to which ball can be rebound=
U=m.g.h
60m=mgh
m and m cancels
60=10*h
60/10=h
6m=h
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