A car travels 15 kilometers west in 10 minutes. After reaching the destination, the car travels back to the starting point, again taking 5 minutes. What is the average velocity of the car?

Question

farcher · Answer

Average velocity = 0

Average velocity = total displacement / time taken

Total displacement = distance but also taking account  of direction
= final displacement + initial displacement  = 15 E + 15 W =  15 E + (-15 E) = 0