1 The figure shows an overhead view of a 0.0250 kg lemon half and two of the three horizontal forces that act on it as it is on a frictionless table. Force has a magnitude of 8.00 N and is at 0 = 28.0. Force has a magnitude of 4.00 N and is at 02 = 26.0. In unit-vector notation, what is the third force if the lemon half (a) is stationary, (b) has the constant velocity = (12.01 - 12.0) m/s, and (c) has the varying velocity = (14.0t - 14.0t)) m/s, where t is time? 1 0