How does the rate at which steam enters the cylinders determine how fast the locomotive will move down the tracks?

fire + water = steam.  for most locomotives) entering a cylinder-piston assembly and pushing ... The gases move from the firebox forward through an array of pipes ... of drinking straws in a glass (only the glass would be resting on its side, ... gear used to control the speed power at cetera of the locomotive?

answer; the above statement is (false);