Bouncy balls
Action and Reactions
Whats going to happen
I will hold a basketball under a bouncy and drop them both while they are touching. When the basketball hits the floor the bouncy ball will bounce off the basketball and go higher than normal because the basketball gave it an extra push as it came back up.
Explantion
The energy from the basketball hitting the floor is transferred into the bouncy ball. This causes the bouncy ball to have more energy and goes farther up into the air.