If it was spinning in a different way, for instance around the vertical axis, the pressure would push it right or left. This is the opposite of how lift works in a plane's wing. It also shows up ...

The second key idea needed to run up a wall is friction. Friction is a force that acts on an object when two surfaces are pushed together. For a fairly reliable model of this force, we can say ...

We are going to measure distance and time for an accelerating object and use that to find the acceleration. In the past, I would do this lab using a specialized drop timer.

Save guides, add subjects and pick up where you left off with your BBC account. Multiple forces act on an object at the same time. The size and direction of these forces determines the movement of ...