5) An applied force of 20 N is used to accelerate an object at 3 mfsec2 to the right across a frictional surface. The object encounters 10 N of friction. Determine the normal force, the net force, and the mass of the object. (Neglect air resistance.) (Fn = 32.7 N; 2F =10 N right; m = 3.3 kg) 6) A 2 kg bucket of water is being lowered by a rope with an acceleration of -3m/sec2. What is the weight of the bucket and the tension force in the rope? (Fg : 19.6 N; Ft : 13.6 N) 7) If the same bucket as above is being lowered at a constant velocity? What is the tension in the rope'? (Ft : 19.6 N) 8) A rightward force is applied to a 6-kg object to move it across a rough surface at constant velocity. The object encounters 15 N of frictional force. Determine the weight, normal force, and applied force. (Fg : 58.8 N; Fn : 58.8 N; F : 15 N)