Question

You are runing towards your friend at 5.0 m/s. He is running directly away from you, in a straight line, at 2.0 m/s. What is your velocity relative to him?

A. -7.0 m/s
B. +7.0 m/s
C. -3.0 m/s
D. +3.0 m/s

Answer 1

our speed is given as

`v_1 = 5 m/s` towards friend

Speed of the friend

`v_2 = 2 m/s` away from us

now relative velocity with respect to our friend is given as

`v_(12) = v_1 - v_2`

`v_(12) = 5 - 2`

`v_(12) = 3 m/s`

so here the relative velocity will be 3 m/s towards the friend

so friend will see that we are moving towards him with relative velocity of 3 m/s