Use the SmartWheel to investigate the change in velocity during a collision. Compare the wall collision with the bungee bounce. How is the change in velocity related to the maximum force?

Investigate collisions of the cart with the Force probe, putting varying masses on the cart.

Investigate the collisions of the cart with the Force probe, changing the distance the cart accelerates before it hits.

Investigate other collision conditions, such as, placing a lump of clay as an additional bumper, stiffer or more elastic rubber bands, or holding the Force probe more loosely so it can "give" a bit in the collision.