In this lab, students measure mass, calculate speed, and compare the force of momentum between balls of various masses. It is designed as an introduction to momentum and provides a common experience for the teacher to expand upon. It also serves as a review for calculating speed.Materials needed: ramp (or 2 metersticks), 1000mL plastic beaker (or any object that easily slides without falling over) 1 ruler (or another meterstick)scale/balancetennis ball, golf ball, and softball (or any 3 balls of