Newton's Three Laws
Push objects of different masses. Builds on 1D Kinematics.
A magician yanks a tablecloth out from under a full dinner setting — plates, glasses, silverware — at high speed.
Why don't the dishes fly off the table?
Newton's First Law! Objects at rest remain at rest unless acted on by a net force. The cloth is pulled so fast that friction barely has time to act on the dishes. Their inertia keeps them in place. The trick actually FAILS if you pull slowly — friction would drag everything off!
Loading simulation…
Apply force to objects of different masses. Same force, different acceleration — that's F = ma.
F = ma
F = ma looks simple but it's arguably the most important equation in physics. It connects the cause (force) to the effect (acceleration) through the resistance (mass).
In a crash, the car stops but YOUR body keeps moving (1st law). The seatbelt provides the force to decelerate YOU — without it, you'd hit the windshield.
A hockey puck slides almost forever on ice — very little friction means very little net force. It's the closest everyday thing to Newton's 1st law in action.
A rocket pushes exhaust gas backward (action). The gas pushes the rocket forward (reaction). No ground needed — Newton's 3rd law works in the vacuum of space.
“These three laws aren't just 'rules' — they're the grammar of the physical universe. Every motion you see, from a falling leaf to an orbiting planet, speaks this language.”
Force Lab
Push objects of different masses with adjustable force. See all three laws at work simultaneously.
Loading simulation…
Push two objects with the same force — one heavy, one light. Watch how the lighter one accelerates faster (F = ma). Then push two objects against each other to see the 3rd law.
Mass isn't weight — it's resistance to acceleration. An astronaut floating in space is weightless but NOT massless. Push them and they still resist.