Energy of a car going up a hill

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Homework Help Overview

The discussion revolves around calculating the energy required for a car to accelerate while ascending a hill. The problem involves a car with a specified mass, initial and final speeds, and a vertical rise.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants discuss the kinetic energy formula and its application to the problem, questioning how to incorporate the vertical rise into their calculations. There are considerations of both kinetic and potential energy in the context of the car's motion.

Discussion Status

Participants are exploring the relationship between kinetic energy and potential energy, with some suggesting the addition of potential energy to the kinetic energy calculation. There is an ongoing inquiry into the correct formulation of the energy equation.

Contextual Notes

There is uncertainty regarding how to effectively integrate the vertical rise into the energy calculations, and participants are reflecting on the implications of this aspect within the problem's constraints.

anthonyk2013
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Not using homework template due to originally being posted in a different forum.
find the energy of a required to accelerate a 1800kg car from 15 km/h to 75km/h an up hill road with a vertical rise of 55m

KE=1/2m(V22-V12)

KE=1/2(1800)(20.832-4.162)

KE=1/2(1800)(433.88-17.30)

KE=1/2(1800)(416.58)

KE=1/2(749844)

KE=374922 J

I'm wondering if I'am on the right track, no sure how to bring the rise into the problem.
 
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anthonyk2013 said:
I'm wondering if I'am on the right track, no sure how to bring the rise into the problem.

+ mgh
 
KE=1/2m(V22-V12)+mgh ?
 
Energy = Kinetic energy + Potential energy

Potential energy = mgh
 
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