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 = 50 mph b = 30 mph 30 seconds d = 30 minutes e = 20 seconds 25 minutes f3= 10 seconds

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Chapter1: Units, Trigonometry. And Vectors
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d% D
30
minutes
e 3D
20
seconds
25
minutes
10
seconds
Time (s)
Total Distance
Speed (mph)
Transcribed Image Text:d% D 30 minutes e 3D 20 seconds 25 minutes 10 seconds Time (s) Total Distance Speed (mph)
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 =
50
mph
30
mph
30
seconds
30
minutes
20
seconds
f3=
25
minutes
10
seconds
Transcribed Image Text: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 = 50 mph 30 mph 30 seconds 30 minutes 20 seconds f3= 25 minutes 10 seconds
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