Relative Velocity

Definition

Relative velocity refers to the velocity of an object as observed from another moving object or reference frame.

Analogy

Imagine two people walking towards each other on opposite sides of an escalator. From their own perspective, they are simply walking forward. However, to someone standing still on the ground watching them, their velocities appear to be faster because they are also being carried by the escalator. In this analogy, the people represent objects with their own velocities, while the escalator represents the reference frame affecting their relative velocities.

Related terms

Frame of Reference: A frame of reference is a coordinate system used to describe positions and motions relative to other objects or observers.

Speed: Speed is how fast an object moves without considering its direction.

Acceleration: Acceleration is the rate at which an object's velocity changes over time.