Perhaps the best way to talk about force and motion is with the momentum principle. It says: *A net force on an object changes its momentum where momentum is the product of mass times its velocity ...

1. Look at the pictures below of two people pulling on a cart of candy. Which way do you think the cart will move in each of the pictures below? Explain your predictions using drawings and words in ...

Why do things fall? It’s about force and motion. Find out more in this Science Trek short. A force is basically a push or a pull. Forces like gravity, inertia, and momentum affect everything. On ...

I intend to talk about forces and force diagrams, but there is a more fundamental question to address first. What is a force? Most texts define it as a push or a pull. That really isn't a bad ...

Why is pancake syrup an example of a resistive force? Some forces are called contact forces because they require objects to touch. One is tension force, found in stretched wires. Another is the ...

This series of short explainer films with Professor Brian Cox comprises six clips focused on forces, speed and motion. Each clip uses simple terms and concrete examples to explain deep concepts ...

Electromechanical actuators offer the strength of hydraulic actuators with more precise movement and motion control.