A ball is dropped from a height of 10 m. If the energy of the ball reduces by 40% after striking the ground, how much high can the ball bounce back? (g = 10 m s–2).
ScienceClass 9CBSEAnswered 27 Mar 2026
Answer
Soln:
mgh=m×10×10= 100m joules
when 40% energy is reduced remaining energy will be 60mjoules Hence 60-m×10×h
H= -6m
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