A 77-year-old woman slipped and fell on a throw rug and land…

A 77-year-old woman slipped and fell on a throw rug and landed on her left hip. She denies striking her head or losing consciousness. Assessment of her left leg reveals that it is shortened and externally rotated. Distal pulses, sensory, and motor functions are intact. You should: 

A tennis ball bounces on the floor three times. If each time…

A tennis ball bounces on the floor three times. If each time it loses [x]% of its energy due to heating, how high does it rise after the third bounce, provided we released it [y] m from the floor? Express you answers in meters, insert the numerical value only without the units.