This is the strangest snake in the world that walks on the ground #shorts

A snake with a hood is

Glass snake is a

The snake eating snake is

Suppose you are riding a bike with a speed of 20 m//s due east relative to a person A who is walking on the ground towards east. If your friend B walking on the ground due west measures your speed as 30 m//s , find the relative velocity between two reference frames A and B .