Only two horizontal forces act on a 7.7 kg body. One force is
7.0 N, acting due east, and the other is 4.3 N, acting 40° north of
west. What is the magnitude of the body's acceleration?
Three astronauts, propelled by jet backpacks, push and guide a
133 kg asteroid toward a processing dock, exerting the forces shown
in the figure, with F1 = 27 N,
F2 = 54 N, F3 = 38 N,
θ1 = 30°, and θ3 =...