# PHYSICS

Two horizontal forces, F1 and F2, are acting on a box, but only F1 is shown in the drawing. F2 can point either to the right or to the left. The box moves only along the x axis. There is no friction between the box and the surface. Suppose that = +6.2 N and the mass of the box is 3.3 kg. Find the magnitude and direction of when the acceleration of the box is (a) +5.5 m/s2, (b) -5.5 m/s2, and (c) 0 m /s2.

BOX----->F1--+x

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1. 6.2

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2. Fnet= F1 + F2

Fnet=mass * acceleration

+6.2+ F2= (3.3)a

A) F2= (3.3)(+5.5) - 6.2
B) F2= (3.3)(-5.5) - 6.2
C) F2= 0 - 6.2

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