Learn about inertia, momentum, kinetic energy, and potential energy while building 8 working models. Students observe the results of launching an object out of a catapult, what happens during a car collision, and monitor the effects of a gravity fan. They then determine which of Newton's three laws pertains to the experiment. An included booklet features step-by-step instruction on how to build the machines, as well as in-depth explanations of how the experiments relate to important scientific principles. Kit includes 121 pieces. Recommended for Elementary and up.