Calories used while swimming for 30 minutes type of stroke 56-kg woman 77-kg man backstroke 95 130 breaststroke 91 125 fast crawl 87 120 slow crawl 95 130 sidestroke 68 90 treading water 35 48 table 2-1 which variable mentioned in table 2-1 is kept constant? a. amount of time spent swimming b. type of swimming stroke c. number of calories used d. the person swimming

Awater slide of length l has a vertical drop of h. abby's mass is m. an average friction force of magnitude f opposes her motion. she starts down the slide at initial speed vi. use work-energy ideas to develop an expression for her speed at the bottom of the slide. then evaluate your result using unit analysis and limiting case analysis. express your answer in terms of the variables h, m, l, vi, f and appropriate constants. vf v f