Videos
AP Physics 1
Pick a topic to watch.
8 video lessons
9:04
Topic 1
Kinematics
Two balls leave a table at the same moment. One is simply dropped. The other is fired sideways, hard. Which one hits the floor first? <slow>They land…
10:50
Topic 2
Force & Translational Dynamics
Three skydivers, far above the ground. Gravity is pulling every one of them down, hard. Yet they hang there, steady, side by side. So why has that pull stopped…
8:07
Topic 3
Work, Energy, and Power
Look up at the first hill of a roller coaster. A chain drags the train to the top, then lets go. There is no engine on the train — nothing pushes it again for…
7:49
Topic 4
Linear Momentum
Five steel balls hang in a row, just touching. Lift one, let it go, and one ball flies off the far end. Only one. Lift two, and exactly two fly off. Something…
7:41
Topic 5
Torque and Rotational Dynamics
Push a heavy door right next to its hinge, as hard as you can. It barely moves. Now push with the same force, out at the handle — and it swings wide open. Same…
7:54
Topic 6
Energy and Momentum of Rotating Systems
Watch a skater spinning with her arms stretched out. She pulls them in — and suddenly she spins much faster. Nobody pushed her. No motor started. So where did…
7:48
Topic 7
Oscillations
Two identical springs, two identical masses. Pull one of them far down. Pull the other only a little. Let go of both at the same moment. Which one gets back…
8:06
Topic 8
Fluids
A steel nail dropped into water goes straight to the bottom. Now look at this ship. It is built from the same steel, tens of thousands of tonnes of it, and it…