The figure shows an overhead view of a 0.0260 kg lemon half and two of the three horizontal forces that act on it as it is on a frictionless table. Force F has a magnitude of 7.00 N and is at 0 = 27.0%. Force F2 has a magnitude of 7.00 N and is at 82 = 26.0. In unit-vector notation, what is the third force if the lemon half (a) is stationary, (b) has the constant velocity = (11.07 - 12.07) m/s, and (c) has the varying velocity = (12.01 - 12.01) m/s, where t is time? 82 AF (a) Number i i+ i Units (b) Number i i Units (c) Number i 7+ i jUnits