Physics question about car going up a slope

[From: ] [author: ] [Date: 11-12-30] [Hit: ]

Not sure if this is needed, but the total output of the engine is 60,000 W and the engine has efficiency 40%.How do I calculate the rate of increase of potential energy of the car?-dPE/dt = m*g*V*sinΘ = 7000*9.8*6*sin5° = 35873 N∙m/sec = 35.......

So a car is going up a slope at constant speen 6 ms-1. The slope is 5°. The car has mass 7000kg.

Not sure if this is needed, but the total output of the engine is 60,000 W and the engine has efficiency 40%.

How do I calculate the rate of increase of potential energy of the car?

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dPE/dt = m*g*V*sinΘ = 7000*9.8*6*sin5° = 35873 N∙m/sec = 35.873 kW

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