[Eric Archer] constructed an analog computer to model the physics of a bouncing ball. The core is a TL074 opamp that does all the integral math. He had no trouble finding descriptions of analog ...

Set of 9 Vibrant Jumping Hopping Balls: experience endless fun and excitement with our set of 9 bouncy balls for kids that come in bright, attractive colors such as red, blue, green, pink ...

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).

A game of skill occasionally has to defer to a game of luck, and Brian Campbell received one of the luckiest bounces that ...

Modern tennis balls are made of a hollow rubber core, covered in a wool or nylon shell which is known as the nap. Pressurised air inside the rubber core makes the ball bounce. Balls which haven't got ...

If you hit too hard against a wall, you won’t be ready for its reply. **—Commit to getting each ball on one bounce. —Play with intensity.** A backboard workout is fast-paced, and you need to ...