Newton first explained it, but Gravity is rocket science. The force we feel on earth is actually one of the four fundamental forces in physics, and it works between any two masses at any distance. This week, we'll see how the people at NASA use Newton's equations.
From cell phones to cars and lights, electricity powers modern life. We'll look at electricity in two parts: static electricity; and current electricity. (Since this is on the AP Physics 1 exam, we'll also take a week later on to look at circuits.)