In January I wrote a piece titled “5 Physics Equations Everyone Should Know.” Lots of you weighed in with your own nominations, and there were plenty of good suggestions. Make that 10 equations everyone should know! You might be a rodeo rider by trade, but you also know about art, history, and cooking microwave popcorn. Check it out: The kinetic energy of the ball increases and it speeds up. When it hits the pins, it transfers kinetic energy, causing them to fly apart.