A car starts at 60 mph and slows down to 0 mph. The average speed is 20

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A car starts at 60 mph and slows down to 0 mph. The average speed is 20 mph after 1 h.
Draw the positions of cars from the above descriptions of 1-h trips. What speed must the car achieve according to the Mean Value Theorem? What speeds must the car achieve according to the Intermediate Value Theorem?
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