istration 2 A ball is dropped to the ground. The ball hits the ground and bounces up. It has the same speed just before and just after it hits the ground. On the diagram to the right, draw the force(s) acting on the ball while it is in contact with the ground. Is there a net force acting on the ball when it is in contact with the ground? Is the momentum of the ball conserved (constant) from just before it hits the ground until just after it leaves the ground? If you think momentum is conserved, state why. If not, describe a system that includes the ball, in which the total momentum is conserved. (The ball is in contact with the ground, bouncing.)

istration 2 A ball is dropped to the ground. The ball hits the ground and bounces up. It has the same speed just before and just after it hits the ground. On the diagram to the right, draw the force(s) acting on the ball while it is in contact with the ground. Is there a net force acting on the ball when it is in contact with the ground? Is the momentum of the ball conserved (constant) from just before it hits the ground until just after it leaves the ground? If you think momentum is conserved, state why. If not, describe a system that includes the ball, in which the total momentum is conserved. (The ball is in contact with the ground, bouncing.)