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You want to average 90 km/h on a car trip. You cover the first half of the distance at an average speed of 48 km/h.

You want to average 90 km/h on a car trip. You cover the first half of the distance at an average speed of 48 km/h. a) What average speed must you have for the second half of the trip to meet your goal? b) Is this reasonable? Note that the velocities are based on half the distance, not half the time

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