How Do You Calculate the Average Power Developed by a Car Engine on a Hill?

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SUMMARY

The average power developed by a car engine on a hill can be calculated using the given parameters: a car with a mass of 1500 kg, an initial speed of 30 m/s, and a final speed of 10 m/s after 40 seconds of travel up a 1 km hill with a height gain of 120 meters. The average resistance to motion is 500 N. The calculated average power output of the engine is 42.5 kW, which factors in gravitational potential energy and work done against resistance.

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A car of mass 1500kg arrives at the foot of a straight hill traveling at
30m/s. it reaches the top of the hill 40 seconds later traveling at 10m/s. The length of the hill is 1km and the gain in height is 120metres. The average resistance to the motion is 500N.
Find The average power developed by the engine.

Answer is 42.5kW.

PLEASE HELP UrgenT !
 
Physics news on Phys.org
1.-st question: why do you post this in "Calculus & Beyond", when this is clearly "Introductory Physics" type ?

2. If you have the guidelines of this particular homework-help forum, then you should be able to answer the following question:

"What have you tried so far ?"

Daniel.
 

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