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Collisions

Tennis Balls

Bouncing Objects

10 images of some spherical objects such as golf balls and tennis balls that are made of different materials and used for specific purposes

Billiard balls and a cue stick on a felt-covered table (PIRO4D, Pixabay)

Billiards and Collisions

The game of billiards shows the principles of collisions, momentum & impulse, and kinetics at work!

Woodpecker on a tree

Do Woodpeckers Get Concussions?

Pecking puts a lot of force on a woodpecker’s brain. But scientists think woodpecker bodies are adapted to help keep them from being injured during pecking-related collisions.

Space junk

Space Junk

Litter isn't just a problem on Earth. When litter ends up in space, it can cause collisions and other consequences for satellites, the International Space Station and even for people on Earth!

Which materials bounce?

Which materials bounce?

Balls go up and down. But what makes for a good ball? Find out by exploring which materials bounce.