8. A force of 100 N makes an angle of 20 with the x-axis. (a) What are the components of that force? (b) What would be the components of a force of the same magnitude and opposite direction? 9. A force of 80 N points 30 with respect to the x-axis. The force acts on an object of mass 4 kg. (a) What is the magnitude and direction of the acceleration of that object? (Treat this problem as a 1-D situation.) (b) What are the magnitudes of the x-components of the force and the acceleration? (c) What are the magnitude and direction of the y-components of the force and the acceleration?