These low-friction carts are designed to study motion and collisions on the Vernier Dynamics Track. The Plunger Cart has a spring-loaded plunger for collisions, including superelastic collisions. A top tray has inserts for attaching the Dual-Range Force Sensor, Low-g Accelerometer, and Wireless Dynamics Sensor System. Removable inserts allow rapid configuration of magnets or hook-and-pile tabs for collision study. Vernier carts are also compatible with other common carts and tracks.