What is the measurement of how fast an object moves relative to a reference point?

The measurement of how fast an object moves relative to a reference point is speed, or motion. Hope this helped:)

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.