1N20.20-Spring Apart Carts

Video: Watch this demo

Description: This demo uses air track carts to compare the velocities of two carts launched in separate directions from the same starting position.


  • Air track
  • Spring Apart Carts Kit


  1. Set up the air track and prepare the sensor gates to measure velocity
  2. Alight two carts at the center of the track


  1. With the sensor gates turned on, launch the centered carts
  2. Compare the two velocities
  3. Repeat with varied masses to observe the relationship between velocities