It looks like you're on the receiving end of the swinging spheres on the "Newton's Cradle" device here at the Fleet. This is a demonstration of Sir Isaac Newton's First Law of physics -- the conservation of momentum and energy -- where bodies at rest or motion will remain that way as long as no forces act upon them. In this instance, the acting force is your 10-year old kid, and the clickety-clack sounds as the spheres strike each other will continue repeatedly until you forcefully say "STOP."

Fleet Science Center
San Diego, CA

05.12.20