Question

When a ball bounces, it rises to – of the height
from which it fell. If the ball is dropped from a
height of 36 m, how high will it rise at the third
bounce?
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Answer 1

At impact, most of the kinetic energy is transferred to elastic energy in the ball (by its deformation) and not to the floor. Some energy is also converted to other forms like heat and sound. These other forms of energy, are mostly losses and they are not recovered thus making the ball bounce back to a lower height.