If the initial (starting) momentum is equal to the final (ending) momentum of the system, what does that mean?

• Momentum is NOT conserved

• The total amount of momentum does not change

• The momentum will increase.

How does this situation show Newton's 3rd Law?

• The person pushes on the ball and the ground pushes on the person.

• The person throws the ball and then the person reacts.

• The person pushes the ball to the left, and the ball pushes the person to the right.

Why is the total momentum BEFORE the explosion zero?

• The person is in motion.

• Everything is not moving.

• The person is accelerating.

Explain the motion of the spray nozzle (the yellow thing!) based on Conservation of Momentum.