There are two forces acting on a box of golf balls, F1 and F2. The mass of the box is 0.750 kg. When the forces act in the same direction, they cause an acceleration of 0.450 m/s2. When they oppose one another, the box accelerates at 0.240 m/s2 in the direction of F2. (a) What is the magnitude of F1? (b) What is the magnitude of F2?

Answer 1

F2 + F1 = .450 (.750)

F2 - F1 = .240 (.750)
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2 F2 = .690(.750)
etc