Question

A motorist drives for 150 km from City A to City B in 2.5 hr. He makes the return trip in 2.0 hr. Find (a) the average speed for each half of the trip, (b) the average velocity for each half of the trip, (c) the average speed of the entire trip, and (d) the average velocity for the entire trip
150km/2.5hr = 60km/hr
150km/2.0hr = 75km/hr

velocities is the same, but directed.

300km/4.5hr = 66.67km/hr

avg velocity is 0, since no net distance was traveled.

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