science

A car of mass 1500 kg accelerates up a hill of incline 8 degrees, increasing its speed from 4 ms to 16 ms over a distance of 90m. Assuming a total frictional resistance of 1000 N, calculte:
a) the tractive effort between the wheels and the road surface
b)the work done during the period of acceleration
c)the average power developed

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asked by Robert

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