ΔKE= ΔPE
480-200=mgh
h=(480-200)/27•9.8 = 1.06 m
A 27-kg girl is bouncing on a trampoline. During a certain interval after leaving the surface of the trampoline, her kinetic energy decreases to 200 J from 480 J. How high does she rise during this interval? Neglect air resistance.
1 answer