A 2kg block at rest on a frictionless surface is pulled for 2s by a 10N horizontal force (pull to the right).(adsbygoogle = window.adsbygoogle || []).push({});

Use the Work Energy Theorem to determine the final velocity from the perspective of an observer moving to the left. Does the WET still work that observer?

I did the calculations and got 14 m/s for the first part. However, I am stuck on the second part. Why does the Work Energy Theorem works for an observer who is moving at constant velocity?

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# Homework Help: Work Energy Theorem

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