Which of the following research questions would be the most appropriate selection for a student studying the Deepwater Horizon Oil Spill?
A. Does the oil spill indicate that oil drilling should be banned?
B. How has the oil spill impacted wildlife?
C. How will the oil spill affect our future approaches to drilling?
D. What effect has the oil spill had on the population size of turtles in the Atlantic?

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