Homework 5 (Ch. 5) 20f12 -/1 g: .0. Current Attempt in Progress The gure 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 _> F1 has a magnitude of 7.00 N and is at 91 = 27.00. _). Force F2 has a magnitude of 10.0 N and is at 92 = 30.0. In unitvector notation, what is the third force if the lemon half (a) is stationary, (b) has the constant velocity 3 = (10.0? 14.0?) m/s, and (c) has the va rying velocity _> U = (14.0t'1r 13.0t/j) m/s,wheretis time