A car starts from rest. It accelerates uniformly at the rate of 5 m/s2 and achieves a maximum velocity of 40 m/s. It then decelerates at the rate of 10 m/s2 and stops. Find the total time of the car’s journey.

8 s

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10 s

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12 s

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16 s

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Solution

The correct option is C 12 s

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