Define force in terms of momentum change.
The ball hits the floor at a speed of $3.8\,\text{m s}^{-1}$. It remains in contact with the floor for $0.081\,\text{s}$ before moving away at a speed of $1.7\,\text{m s}^{-1}$. The ball has a mass of $0.062\,\text{kg}$. Calculate the loss of kinetic energy of the ball during the collision.
Determine the size of the change in momentum of the ball during the collision.
Show that the magnitude of the average resultant force acting on the ball during the collision is $4.2\,\text{N}$.
Use the information in (iii) to calculate the magnitude of the average force exerted by the floor on the ball during the collision.
Use the information in (iii) to calculate the magnitude of the average force exerted by the ball on the floor during the collision.