Ballistics Car With Remote Trigger, 1 Each

The Ballistics Car With Remote Trigger by United Scientific is a four-wheeled cart with a spring-loaded launch tube that is fired by wireless signal while the cart rolls. The ball and cart share the same horizontal velocity, so the ball falls back into the tube, demonstrating the independence of vertical and horizontal motion. It includes two 3/4 in steel balls and a conical rubber catcher, and runs on six AAA batteries (not included).