So I'm a 195# cyclist, coasting down a hill. I pass the 120 # cyclist who is also coasting. I'm not sure why. Ignoring wind resistance and friction - which I believe aren't significant here - shouldn't we accelerate at the same rate? I believe it has to do with the fact that I'm carrying more momentum, but I can't quantify it. It's the same deal as downhill skiers, they tend to be larger because with more weight, they carry more momentum into the flats. Any thoughts?