An object is free to move in the xy plane. If this object has a mass of 1.0 kg and an acceleration a = ( 8.0 m/s, - 6.0 m/s?) , what is the magnitude of the net force acting on the object? A. 5.0 N B. 10 N C. 7.0 N D. 1.0 N E. 2.0 N