Sometimes toys are used in space to demonstrate laws of physics. Centripetal acceleration can be clearly demonstrated in space by using a toy race car and a circular piece of track (left side of picture). Centripetal acceleration deals with properties of acceleration along a curved path. On the ground, gravity masks the actions of the scientific principles at play because as the car slows down, it falls quickly off the track. In space, though, the car clings to the track with the small force that is holding it there.

Credits - NASA