Hunter, CJ catapults of energy

Finding witch structure was best to do to create a strong catapult. what worked was that we found the right structure that gave it mechanical energy what didn't work was that we fiddled with the other parts a little but we did stick to what we had. kinetic energy goes down and potential energy goes up like a catapult so that would be related to mechanical energy. A roller coaster it goes up then down even like when a dog shakes your hand it goes up and down. Put more support on the middle of the spoon to get more force and mechanical energy.