1. A particle is initially traveling to the right when it hits a wall and turns around to the left. The momentum after the collision is less than the initial momentum. a)impulse on the particle is to the left b)impulse on the particle is to the right c)no impulse on the particle d)none When a particle hits the floor and comes to rest, what is the direction of the total impulse? 3. For the first problem, the question states that the momentum is less after the collision. I thought the momentum before = momentum after. Does it have something to do with impulse? The second question is the direction of the impulse up because of Newton's Second Law and impulse is a force?