A car moves in a straight line at 20.0 m/s for 12.0 miles, then at 30.0 m/s for another 12.0 miles.
(a) Is the car's average speed less than, greater than, or equal to 25.0 m/s?
less than 25.0 m/s
equal to 25.0 m/s
greater than 25.0 m/s
(b) Calculate the car's average speed. (Enter your answer to three significant figures.)
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