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If the work changes the object's velocity through a horizontal distance then:

W = delta KE

But, what if the work changes the object's vertical position. Then the object's mph changes. Would the Work formula be:

W = delta PE?

But, if something is moving upwards (y axis) then it has both a change in PE and KE. What would the new equation be for total work? I'm confused because we are only taught the W = delta KE equation.

Thank you. :-)

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# Homework Help: The Work-Energy Theorem

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