Calculate the change in gravitational potential energy of the ball as it moves from point A to point B.
Show that the ball strikes the wall at B with a speed of $2.8\,\text{m s}^{-1}$.
The ball’s change in momentum from its collision with the wall is $0.096\,\text{kg m s}^{-1}$. The ball stays in contact with the wall for $20\,\text{ms}$. Determine the speed immediately after the collision.
Determine the magnitude of the average force on the ball.
State and explain whether the collision is elastic or inelastic.
In reality, friction is significant so that the true increase in kinetic energy of the ball in moving from A to B is $76\,\text{mJ}$. The track length between A and B is $0.60\,\text{m}$. Use your answer in (a) to determine the average frictional force acting on the ball as it moves from A to B.