Their article absolutely _______their claims. A: coincides B: contradicts C: collides D: conflicts

When one thing in motion hits another thing, it ______ with it. A: coincides B: collides C: reconciles D: converges

A 2-kg cart, traveling on a horizontal air track with a speed of 6 m/s, collides with a stationary 4-kg cart. The carts stick together. The impulse exerted by one cart on the other has a magnitude of: A: 0 B: 4 N · s C: 8 N · s D: 12 N · s E: 16 N · s