2. A ball of mass 500 g is dropped from a height of 7 m and it bounces back to a height of 5 m after hitting the ground. a. Calculate the G. P.E before the ball before it hits the ground
b. Explain the energy transformation from when the ball is dropped till the ball hits the ground
c. Calculate the G. P.E after the ball bounces back.
d. How much energy is wasted?
At a certain height the reaches a velocity of 8 m/s before it hits the ground
e. Calculate the K. E.
f. Calculate the work done when the ball reaches that speed.