Here's how to get more bounce from a normal tennis ball - buddy it up with a heavier ball for twice the impact. Hold a ball in each hand and decide which ball weighs more (has greater mass).

On a sunny July day in 2005, a frog jumped out of a rain gutter to see an unexpected sight: an avalanche of thousands of colorful bouncy balls careening down a San Francisco street. Although San ...

Simply by attaching the balls to sticks on the ceiling, @srepublic7 is able to 'bounce' the balls off his ceiling, causing ...

Shaking the can agitates the pea, causing it to bounce around the inside ... The rattling noise is a result of the metal ball inside the can, which is necessary for effective mixing.