A plane begins its takeoff at 2:00 P.M.on a 2100-mile flight.After 12.5 hours,the plane arrives at its destination.Explain why there are at least two times during the flight when the speed of the plane is 100 miles per hour.
A) By the Mean Value Theorem,there is a time when the speed of the plane must equal the average speed of 290 mi/hr.The speed was 100 mi/hr when the plane was accelerating to 290 mi/hr and decelerating from 290 mi/hr.
B) By the Mean Value Theorem,there is a time when the speed of the plane must equal the average speed of 145 mi/hr.The speed was 100 mi/hr when the plane was accelerating to 145 mi/hr and decelerating from 145 mi/hr.
C) By the Mean Value Theorem,there is a time when the speed of the plane must equal the average speed of 84 mi/hr.The speed was 100 mi/hr when the plane was accelerating to 84 mi/hr and decelerating from 84 mi/hr.
D) By the Mean Value Theorem,there is a time when the speed of the plane must equal the average speed of 112 mi/hr.The speed was 100 mi/hr when the plane was accelerating to 112 mi/hr and decelerating from 112 mi/hr.
E) By the Mean Value Theorem,there is a time when the speed of the plane must equal the average speed of 168 mi/hr.The speed was 100 mi/hr when the plane was accelerating to 168 mi/hr and decelerating from 168 mi/hr.
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