How to calculate relative velocity

Relative velocity is the velocity of an object in relation to a frame of reference. To calculate relative velocity, you need to subtract the velocity of the reference frame from the velocity of the object.

Here is the formula to calculate relative velocity:

Relative Velocity = Velocity of Object - Velocity of Reference Frame

For example, if an object is moving at 20 m/s and the reference frame is moving at 5 m/s in the same direction, the relative velocity of the object in relation to the reference frame would be:

Relative Velocity = 20 m/s - 5 m/s
Relative Velocity = 15 m/s

So, the relative velocity of the object in relation to the reference frame is 15 m/s.