There are two forces on the 1.11 kg box in the overhead view of the figure but only one is shown. For F1 = 11.1 N, a = 14.0 m/s2, and θ = 31.7°, find the second force (a) in unit-vector notation and as (b) a magnitude and (c) a direction. (State the direction as a negative angle measured from the +x direction.)
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