A Person Pushes Horizontally on a Heavy Box and Slides

question 1

Multiple Choice

A person pushes horizontally on a heavy box and slides it across the level floor at constant velocity. The person pushes with a 60.0 N force for the first 6.88 m, at which time he begins to tire. The force he exerts then starts to decrease linearly from 60.0 N to 0.00 N across the remaining 6.88 m. How much total work did the person do on the box?

• A) 619 J
• B) 826 J
• C) 495 J
• D) 925 J

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