Question

Solve numerical= a ball is dropped from rest at a height of 40m. after striking,it loses 25% of energy.to what height does it rebound? what is the velocity at the highest point?

Answer 1

Answer:

Explanation:

9v^2/16 = 800

v=120/3

v=40 m/s

30^2/20 = h

45 m = h