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

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To calculate the average power developed by a car engine on a hill, consider the car's mass of 1500 kg, initial speed of 30 m/s, final speed of 10 m/s after 40 seconds, a hill length of 1 km, a height gain of 120 meters, and an average resistance of 500 N. The average power output is determined to be 42.5 kW. The discussion also raises a concern about the appropriate categorization of the question, suggesting it fits better in "Introductory Physics" rather than "Calculus & Beyond." Additionally, participants emphasize the importance of sharing previous attempts to solve the problem. The thread highlights the need for clarity in forum posting guidelines.
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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 !
 
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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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