A force of 5N acts on a 2 kg object that starts from rest. When the force has been acting for 2 s, the rate at which it is doing work is: Here's how I tried to solve it. Solve for acceleration, which I assumed was constant. Code (Text): a = F/m = 5N / 2kg = 2.5 m/s/s Then use the displacement equation to find the distance traveled. Code (Text): x = xo + (vo)(t) + (1/2)(a)(t^2) x = 0 + 0 + (1/2)(2.5 m/s/s)(2s)^2 x = 5m Work = F * x = 5N * 5m = 25 J Power = Work / t = 25J / 2s = 12.5 W However, the only possible answer choices are: a) 5W b) 10W c) 25W d) 50W e) 75W Where am I screwing up?