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Module 3: Waves and Thermodynamics

Relative Velocity

What is relative velocity?

In this post, we calculate the relative velocity of two objects moving along the same line using vector analysis, as a part of the Prelim Physics course under the module Kinematics and sub-part Motion in a Straight Line. Relative velocity is the velocity of an object from the reference point of another object, known as the frame of reference.

The following two videos introduce relative velocity, where you are able to understand observers and objects in the first video on frames of reference, and what relative velocity is and example problems in the second.

Part 1: Frames of reference


Part 2: Relative Velocity