(a) Name the important factors in selecting materials for the frame of a mountain bike. (b) Steel,..

(a) Name the important factors in selecting materials for the frame of a mountain bike. (b) Steel, aluminum, and titanium alloys have all been used as the primary metals in the structure of a bicycle; determine the major weaknesses and strengths of each. (c) The more-modern bikes are made of advanced composites. Explain why, and name a specific composite used in the structure of a bike.