PhET Interactive Simulations
University of Colorado Boulder
- Newton's First Law
Explore the forces at work when pulling against a cart, and pushing a refrigerator, crate, or person. Create an applied force and see how it makes objects move. Change friction and see how it affects the motion of objects.
Sample Learning Goals
- Identify when forces are balanced vs unbalanced.
- Determine the sum of forces (net force) on an object with more than one force on it.
- Predict the motion of an object with zero net force.
- Predict the direction of motion given a combination of forces.