Question

A car is going towards north with a velocity 20m/s.after sometime it starts to go towards south with velocity 20m/s.determine change in velocity of the car

Answer 1

velocity is a vector quantity so when it goes north v1=+20m/s
southv2=-20m/s

when we find change in velocity
=v2-v1
-20-20=-40m/s

or v1-v2
=20-(-20)
40m/s

Answer 2

Answer:

this is the answer

40m/s

Explanation:

hope it will help