In each case, scientists need to consider the effects of gravity and all the other forces on human-made devices so that they can control their motion as they move through space. In this last activity, ...

In this activity, you will use a simulation from PhET Interactive ... which will help you make predictions about motion. Key Concepts: motion, force, balanced forces, unbalanced forces, net force, ...

Newton’s Laws will help your students understand force, motion, and the transfer of energy. In this classroom presentation, engaging hands-on activities help demonstrate these important concepts your ...

You're sitting in physics class, working on a traditional problem involving forces and acceleration, when you start to wonder where these terms even came from. Were they just dreamed up to bring ...

[MUSIC] JOAN CARTAN-HANSEN, HOST: Force is a fancy word for a push or a pull. And motion is the changing of a position or location. Some forces require contact. Others, called natural forces ...

They are balanced, so the vertical resultant force is also zero. This means that there is no resultant vertical acceleration. The submarine will continue with the same motion, either remaining ...

and a body in motion will remain in motion unless it is acted upon by an external force." What, then, happens to a body when an external force is applied to it? That situation is described by ...

But the Earth's gravitational pull on the moon is great. The Earth's gravity keeps the moon in Earth's orbit. For more information about force and motion, check out the science trek website.

In terms of force and motion, they see several things like: Using a motion detector to see that the speed of a cart increases when you push it. Using a fan on a cart (with a motion detector ...