Calculate the speed of the ball when it reaches the ground.
Show that the time taken for the ball to reach the ground is $0.47\,\text{s}$.
The ball rebounds vertically with speed $4.2\,\text{m s}^{-1}$ as it leaves the ground. The ball remains in contact with the ground for $20\,\text{ms}$. The ball rises to a greatest height $h$. The ball passes A at time $t = 0$. On Fig. 2.2, draw a graph to show how the velocity $v$ of the ball varies with time $t$. Extend the graph until the ball has rebounded from the ground and reaches B.
For this motion, calculate the change in kinetic energy.
For this motion, calculate the change in gravitational potential energy.
The ball has a mass of $0.050\,\text{kg}$. It travels from A and arrives at B after rebounding. For this motion, calculate the change in kinetic energy.
The ball has a mass of $0.050\,\text{kg}$. It travels from A and arrives at B after rebounding. For this motion, calculate the change in gravitational potential energy.
State and explain the total change in energy of the ball for this motion.