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.

Constant velocity, Cv = ±1%, while position jitter, Xa = ±0.120 m m. Note at a 10-kHz sampling rate, ... First, acceleration, Aa due to the force disturbance is 0.2 m/sec2.

If something has a constant velocity, such as a car using cruise control on the highway, its acceleration is zero. If the velocity changes at all, the acceleration is not zero.