Most of the following are correct. Which is false? Arches us compression to strengthen structures instead of weaken them.
B)Cables in a suspension bridge should be parabolic in form.
C)Arches that support long horizontal loads should be a caternary.
D)Domes are useful 3D arches that reduce the need for structural columns in the
center of the structure. By

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