Calcium and boron react to form calcium boride, as represented by the chemical equation below.
Ca + 6 B → Cab6
Which type of reaction is shown by this equation?
A. double displacement
B. single displacement
C. synthesis
D. decomposition

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