You drive your car in a straight line at 15 m/s for 10 kilometers, then at...

Question

Question

You drive your car in a straight line at 15 m/s for 10 kilometers, then at 25 m/s for another 10 kilometers.

a. What is your average speed?

b. Choose the best explanation from among the following:

1) More time is spent at 15 m/s than at 25 m/s.

2) The average of 15 m/s and 25 m/s is 20 m/s.

3) Less time is spent at 15 m/s than at 25 m/s.

Answer 1

Answer #1

Time=distance/speed

Avg speed = total distance / time

Answer 2

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