Consider the mechanism shown below, where link AB is rotating in the counter clockwise sense with a constant angular speed of ω AB. An animation of this motion is shown below. Plots for the angular ...

Acceleration and velocity. Newton's second law says that when a constant force acts on a massive body, it causes it to accelerate, i.e., to change its velocity, at a constant rate.

This constant acceleration provides a basis of comparison for thinking about forces-- since what we're actually sensing when we ... Acceleration is just a change in velocity over time, ...