A 0.5 kg brick is dropped from a height of 9.0 m. It hits the ground and comes to rest.
(a) What is the magnitude of the impulse exerted by the ground on the brick?
N·s
(b) If it takes 0.0013 s from the time the brick first touches the ground until it comes to rest, what is the magnitude of the average force exerted by the ground on the brick?
N