A box rests on a frozen pond, which serves as a frictionless horizontal surface. If a fisherman applies a horizontal force with magnitude 48.0 N to the box and produces an acceleration of magnitude 3.00 m/s2, what is the mass of the box?

Solution 9E Given that the force F = 48.0 N Acceleration a = 3.00 m/s 2 Let m be the mass of the box. From Newton’s second law of motion, F = ma 48.0 N = m × 3.00 m/s 2 m = 48.0/3.00 kg m = 16.0 kg The mass of the box is 16.0 kg .