Two-Ball Super Bounce

Tennis ball rockets much higher than its starting height. Ask students to predict what will happen. Stack tennis ball on basketball and drop together. Key idea: The basketball rebounds and transfers momentum/energy into the lighter ball. Ask: Where did the tennis ball get extra speed? Safety and cleanup: Large clear drop zone; eye protection optional. https://www.google.com/search?q=%22Two-Ball+Super+Bounce%22+science+demonstration+experiment