A car starts from rest and accelerates to a speed of "a" mph in "c" seconds. The acceleration during this period is constant. For the next "d" minutes the car moves with the constant speed of "a" mph. At this time, the car decelerates to a speed of "b" mph in "e" seconds. Then for the next "f" minutes the car moves with a constant speed of "b" mph. At this time the driver of the car applies the brake and the car decelerates to a full stop in "g" seconds. The variation of the speed of the car with time is shown in the accompanying diagram. Determine the total distance (miles) traveled by the car and the average speed (kph) of the car over this distance.   a = 55 mph b = 30 mph c =  20 seconds d =  25 minutes e =  10 seconds f =  40 minutes g = 20 seconds

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Distance and Speed

The speed, distance and time relation forms the basis of study of motion. You will need these concepts in the study of Mechanics. This concept is applicable for students who are studying the following courses –