Your position/speed/acceleration analogy is misleading from a physics perspective. The amount of GHG in the atmosphere determines an equilibrium point. More GHG

Your position/speed/acceleration analogy is misleading from a physics perspective. The amount of GHG in the atmosphere determines an equilibrium point. More GHG corresponds to a hotter equilibrium. There's some delay in moving to the new equilibrium, so even if we stopped all emissions, the world would keep getting hotter for a little while before settling at the new equilibrium. But removing GHG from the atmosphere does lower the equilibrium temperature, even if we don't get it all the way back to pre-industrial levels.