Which movement has the greatest net work done?

  • Thread starter songoku
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    Net Work
  • #1
songoku
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Homework Statement
Please see below
Relevant Equations
W = F.d
1717897815283.png


My answer is (D) but the answer key is (C).

My reasoning is that the net work for (A), (B) and (C) are all zero since the object moves with constant speed so the resultant force is also zero. What is the mistake in my reasoning?

Thanks
 
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  • #2
Have you considered the possibility that the answer key might be in error?
 
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  • #3
kuruman said:
Have you considered the possibility that the answer key might be in error?
Yes, but knowing me, it is better to ask for confirmation here.

Thank you very much kuruman
 
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