emmyh24 emmyh24

13-06-2016
Physics

Answered

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?

Verified Answer :

metchelle metchelle

20-06-2016

On travelling west:

Velocity = distance / time = 15 km / 10 min
Velocity = 1.5 km per minute

On travelling east:

Velocity = distance / time = 15 km / 5 min
Velocity = 3 km per minute

Average velocity:

(1.5 + 3)/2 = 2.25 km per minute

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