11. The absolute tolerance is -+1

A force F = (2.87 + 8.0j + 4.6k ) N acts on a 3.0kg object that moves in 4.5s from an initial position 71 = (1.97 + 1.7j + 5.5k) m to a final position 72 = (5.2i + 5.3 j + 8.6k ) m . Find (a) the work done on the object by the force in that time interval, (b) the average power due to the force during that time interval, and (c) the angle between the vectors r 1 and r 2. (a) Number i Units (b) Number i Units (c) Number Units