The mass m = 3.57 kg is sliding on the frictionless incline of angle 42.7 degrees. A force (F) = 3.24 N is applied horizontally. Determine the acceleration (a) in m/s^2 of the mass on the incline. Use g = 9.8 m/s^2, take parallel to the plane abd up the plane as positive. Express the answer to three significant digits. (FYI: Watch the signs)