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Work And Energy — Science STD 9 — Question

Rajasthan BoardEnglish MediumSTD 9ScienceWork And Energy1 Mark
Question
A ball is thrown vertically up-wards from the ground. Regarding the work done by air resistance, which of the following is correct?
✓

Answer

  1. Work done is negative
Explanation:
Air resistance offers retarding force opposite to the direction of instantaneous velocity. As the force acts opposite to the displacement of the body, the work done by it is negative.  

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