A Horizontal Force of 200 N Is Applied to a 55.0-Kg

question 79

Multiple Choice

A horizontal force of 200 N is applied to a 55.0-kg cart across a 15.0-m level surface.If the cart accelerates at 2.0 m/s²,then what is the work done by the force of friction as it acts to retard the motion of the cart?

• A)-4.7E+3 J
• B)-1.4E+3 J
• C)-3.0E+3 J
• D)-9.0E+1 J
• E)-3.1E+2 J

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