A Horizontal Force of 12 Newtons Is Applied to a 4.0

question 48

Multiple Choice

A horizontal force of 12 newtons is applied to a 4.0 kg box that slides on a horizontal surface. The box starts from rest, moves a horizontal distance of 10 meters, and obtains a velocity of 5.0 m/s. The surface has friction. The friction force, assumed constant, is

• A) 7.0 N.
• B) 6.5 N.
• C) 6.0 N.
• D) 5.7 N.
• E) 4.9 N.

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