Three astronauts, propelled by jet backpacks, push and guide a 144 kg asteroid toward a processing dock, exerting the forces shown in the figure, with F1 = 32.0 N, F2 = 56.0 N, F3 = 45.0 N, θ1 = 30.0∘, and θ3 = 60.0∘. What is the (a) magnitude and (b) angle (measured relative to the positive direction of the x-axis in the range of (−180∘, 180∘) of the asteroid's acceleration? (a) Number Units (b) Number Units