PVC Rocket

All rockets are powered by explosions.  All explosions are rapidly expanding gases.  Usually they’re expanding because they’re burning, but not …

Friction

Friction is the slowing down of a moving object because it is touching another object. Newton said that objects in …

Inertia

Inertia is Newton’s first law. It states that an object in motion tends to stay in motion and an object …

Forces

Forces are the effects of objects acting on one another. This might be a breeze stirring a leaf or a …