Discuss how best to submit homework assignments, use examples. Review momentum as mass x velocity. Show the effect that an object of mass M1 moving with a velocity of V1 will have on a second object of mass M2 with a velocity of V2 at zero will react when collided. Introduce the formula M1V1 = M2V2 and that the net momentum before the collision must equal the net momentum after the collision. Sketch 3 different possibilities