Two forces act on a 1.6 kg box. One of the forces is known to be Fvec = 4.7ihatbold N. The acceleration is measured to be avec = (-1.9 ihatbold - 2.8 jhatbold) m/s2.
(a) Find the second force in unit-vector notation.
(b) Find the second force as a magnitude and direction. ° (counterclockwise from the +x-axis is positive)