People have been known to fall from airplanes with no parachutes and survive. One reason is that air friction increases as the speed increases. Since the air friction increases as the speed increases, eventually the force of air friction will be balanced with the force of gravity. The person will then fall with a constant velocity for the rest of the distance to the ground. This maximum constant velocity is called the 'terminal velocity'. (To survive, a person would also need to have the fall broken by tree branches. a snow bank. water. or very soft soil.) a. What is the force of air friction on a 78.0 kg person falling at terminal velocity? (2 marks) b. If you have a terminal velocity of 55 mfs [down] when the force of friction is 540 N, what is your mass? {2 marks) c. Suppose you changed your body position so that the force of friction on you changed from 540 N to 520 N. Explain the changes in yM acceleration in the seconds following. How would your new speed compare to your previous speed? [2 marks} atwmpl Jamie's} l Leloiwll ' a. Path: p