Linear Momentum from Kinetic Energy · PhysicsBowl 2015 #12

Physics · mechanics

Problem

A box of mass 12.0 kgkg is being pushed to the right across a horizontal surface. When the box has 12.0 JJ of kinetic energy, a 12.0 NN net force acts on it. Which one of the following choices best represents the magnitude of the linear momentum of the box at this instant? (A) 6.00 kgmskg\frac{m}{s} (B) 8.50 kgmskg\frac{m}{s} (C) 12.0 kgmskg\frac{m}{s} (D) 17.0 kgmskg\frac{m}{s} (E) 24.0 kgmskg\frac{m}{s}

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