The diagram above shows the speed-time graph of a car. If the car covered a total distance of 600m in 25s, calculate its maximum speed.

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A. 30ms-1
B. 25ms-1
C. 20ms-1
D. 15ms-1

Correct Answer: Option A

A. 30ms-1

Explanation

S = ½(a+b)h

60 = ½(15+25)h

h = 1200/40 = 30m/s

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