The cart collides with the box - watch what happens!
Click the track to pause / resume
Always rolls right toward the box.
The cart rolls to the right with the selected speed and mass. When it collides with the box, the cart stops and transfers its kinetic energy to the box. The box then slides forward based on the mass and speed selected. The track starts at 400 cm. If the box needs more room, the track automatically expands so you can see the full motion.