Observe. Wonder. Understand. Apply.
Start here. Everything in the universe moves. Learn about position, velocity, and acceleration through daily observations.
Why do things move? Newton's laws and the concept of force. Learn through everyday pushes and pulls.
The hidden currency of the universe. Work, energy, and power. See energy transform all around you.
Sound, light, and oscillations. How energy travels through space and matter.
Charges, currents, circuits, and the power that runs our world.
Quantum mechanics, relativity, and the frontiers of physics.
You've learned about Motion, Force, and Energy. Here's a question that connects all three:
"A ball is thrown upward. It rises, stops for an instant, and falls back down. Describe all the energy transformations and forces acting on it throughout its journey."
Upward: Force from hand â Kinetic energy â Potential energy (as it rises). At top: Maximum potential energy, zero kinetic energy, gravity still acting. Downward: Potential energy â Kinetic energy. Throughout: Gravity always acts downward.