I am having trouble deciding when to use the work-energy formula; change in KE=W and derivations of this formula, or the Kf+Uf+Eth=Ki+Ui+Wext formula when presented with work problems.(adsbygoogle = window.adsbygoogle || []).push({});

Are there any type of guidelines or hints that anyone could give me so I can more easily decide which formula to use?

Thank you.

Stephen

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# Homework Help: When to use the work-energy formula

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