Forces change motion
A net force creates acceleration. Static friction can prevent motion until a threshold is passed.
FORCES YOU CAN SEE · MOTION YOU CONTROL
Change the force.
Change the world.
Launch a cart, engineer a collision, aim a projectile and conquer friction. Make a prediction, change the setup and see real physics respond.
CLASSES 9–11 · PHYSICSREAL CALCULATIONS + LIVE GRAPHSFREE · NO SIGN-IN
NEWTON'S LAWS
Force & Friction
Push a cart. Watch resistance push back.
SIMULATED PHYSICS
↔ Drag to orbit the view
5.00 s
Pin a result, change one control and compare its measurable effect.
EVIDENCE · NOT JUST ANIMATION
Read the motion
Plotted values come from the same equations as the scene. Dashed cursor marks the current time. Units are shown on the plot.
WHY DID THAT HAPPEN?
Fnet = ma
YOUR SCIENCE NOTEBOOK
Keep discoveries, not just scores.
Change one variable. Save the setup, your prediction and what you observed. These notes stay on this device.
FOUR PHYSICS IDEAS. ONE CONNECTED STORY.
Momentum survives an isolated impact
Equal-and-opposite impulses transfer momentum. Kinetic energy can be converted into other forms.
Gravity changes trajectories
Horizontal velocity is constant without air drag, while vertical acceleration acts downward.
Energy tracks change
Potential energy becomes kinetic energy and thermal energy as a cart slides with friction.