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Explore physics through lessons and practice.
Class 9 · Physics
Describing Motion Around Us
Drag Kimmy along tracks, drive live graphs, slam the brakes and fling a marble off a ring.
Try a lesson →10 lessons
Class 9 · Physics
How Forces Affect Motion
Pull ropes, flick coins, crash carts and fire balloon rockets: feel every force behind Newton’s three laws.
Try a lesson →10 lessons
Class 9 · Physics
Work, Energy and Simple Machines
Lift sacks, flick carrom strikers, drop balls into sand, build a roller coaster and balance a seesaw: feel every joule.
Try a lesson →10 lessons
Class 9 · Physics
Sound Waves
Pluck, pump, ping and play: a real signal generator, a bell jar, an echo canyon and sonar — sound you can see.
Try a lesson →10 lessons