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[" T weight 20000N climbs upper hill at ...

[" T weight 20000N climbs upper hill at a steady spezd of 8"m/s" gaining a height of "120" meter "],[" 0s.Calculate work done by the car."]

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A car of mass m 1600 kg, while moving on any road, experience resistance to its motion given by (m+nV^(2)) newton, where m and n are positive constants. On a horizontal road the car moved at a constant speed of 40 m/s when the engine developed a power of 53 KW. When the engine developed an output of 2 KW the car was able to travel on a horizontal road at a constant speed of 10 m/s. (a) Find the power that the engine must deliver for the car to travel at a constant speed of 40 m/s on a horizontal road. (b) The car is able to climb a hill at a constant speed of 40 m/s with its engine working at a constant rate of 69 KW. Calculate the inclination of the hill (in degree)