ABSTRACT:In this lab the objective was to prove newton’s third law of motion. To prove the law we measured the speed and mass of two cars and had them collide. After the collisions the velocities of each car were recorded before and after. By doing so, several formulas were applicable to prove Newton’s third law.GOALS:The goal of the experiment is to prove that momentum and kinetic energy are not lost in acollision. Through the experiment the momentum should not show a great change and will result in a constant kinetic energy. INTRODUCTION:Newton’s Third Law states that momentum and kinetic energy are conserved in all collisions. Proving this requires using known masses and velocities to calculate momentum. The masses of the carts will be recorded by a scale. The velocities will be found using the glx as they carts slide across the frictionless rails. With a known momentum you can calculate the kinetic energy.