1. At the circus, a 100 kilogram clown is fired at 15 meters per second from a 500 kilogram cannon. What is the recoil speed of the cannon? My question is what does 'recoil speed' mean? that's it. 2. There are two identical carts, attached by a cord moving to the right at speed V. If the cord is cut, what would be the speed of cart A? Just imagine that there are two carts, and between them there is a cord attached to each other, and i think this cord moves to the right at the speed of V. How can i find cart A, what formula can i use? momentum? thanks.