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).

This fun experiment uses vinegar to dissolve the eggshell, leaving a rubbery, bouncy membrane. Explore this and four other mind-blowing egg experiments that are as educational as they are ...

Presenter 2: We have been investigating how the height from which you drop a single ball affects how high it ... will have to bounce back up. Presenter 1: In evaluating this experiment, we need ...