Over 300 years ago, a man named Isaac Newton watched the world move — falling apples, rolling carts — and wrote down three rules for how everything pushes and gets pushed. (The Moon’s circling needs one more of his ideas, gravity — that’s another article.) Every car, football, rocket, and skateboard still obeys them today.
Now prove it
Played all three toys? Take the quiz again and see if you beat your first score.