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🚀 Physics
Speed, force, energy… Describe the motion of the world with math — physics is math's favorite laboratory.
- 01🏎️Speed & MotionWho is faster? One formula and one graph tell the whole story.
- 02🏋️Force & Newton's LawsPush and pull, inertia and F = ma — three laws that explain everything from seatbelts to rockets.
- 03⚡Work & EnergyPushing does work, height stores potential energy, falling trades it for kinetic energy — conservation keeps the books perfectly balanced.
- 04🍎Gravity & Free FallLet go of anything and it falls — Earth pulls every kilogram with about 9.8 newtons, and a falling object speeds up the whole way down.
- 05📌PressureThe same force, sharp hurts and wide feels fine — divide force by area to see how much the effect changes.
- 06🪨DensitySame size, different weight — density measures how much mass squeezes into each cubic centimetre.
- 07⚖️LeversA rigid bar and a fulcrum let a small force move a big load. The balance game of force times arm, from seesaws to the Earth.
- 08🎳MomentumMass times velocity is the cargo of motion — collisions pass the total on exactly, and airbags save lives by stretching out the time.