"The Bulldog-Toss"

Making our catapult


  • Large Popsicle sticks
  • Small Popsicle sticks
  • Different sizes of rubber bands
  • String
  • Wire
  • Paper clips
  • Hot glue

Computer model

Problems we faced

During the construction of our project, the biggest problem we came across was making the ping-pong ball go forward instead of up. We kept adjusting the catapult until we found the desired angle.

Energy Analysis

When the ball is sitting in the catapult, with no outside forces acting on it, it has potential energy. Then, when you launch the catapult, the energy is changed to kinetic energy. when it is moving, it has kinetic energy. When these two types of energy are combined to launch the catapult, the resulting energy is called mechanical energy.

The launch

Hannah Video

Summayry Discussion

hannah video summary

Thank you!