Fourth graders explore Newton's second law of motion, testing and identifying the characteristics of objects that makes them easier or harder to push. They identify what types of objects are the hardest to move, then test a variety of...

Students investigate the interdependence of mass and gravitational acceleration using computer simulation. In this physics instructional activity, students derive the formula for acceleration due to gravity. They calculate air resistance...

Students analyze a collision between a moving cart and a dropped brick that lands on top of it. They use position-time data to determine the pre- and post-collision speeds of the cart and the brick. The individual momentum values of the...