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A car makes a trip consisting of three parts. In part 1 the car travels at...

A car makes a trip consisting of three parts. In part 1 the car travels at 31m/s north for 40km. Then the car travels 18km south in 12 minutes. In the last part of the trip the car travels at 31m/s north for 22minutes.
a) what is the average speed of the car?
b) what is the average velocity of the car?
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