3. Mr. Wyman, 65kg, goes skiing over the winter holidays. He misses physics so much that he can't help but do experiments. He knows that the hill is at an altitude of 480 m. Starting from rest, he skis in a crouched position to the bottom of the hill, trying to maximize his speed. He reaches a speed of 40.0 m/s. a) Using energy arguments, how fast could he be going at the bottom of the hill? b) Since he only reached 40.0 m/s, how much mechanical energy was wasted (in kJ)? Into what form of energy was it converted? c) At what altitude should he have reached 40.0 m/s? (ie; same scenario without considering friction)