A car goes from repose (0 mph) to 50 mph in, say, 30 seconds. Math tells us that there is an infinite amount of numbers between 0 and 50 (or between any two other numbers). Therefore, isn't it "obvious" or "intuitive" that it would take a car an infinite amount of time to go from 0 mph to 50 mph? Or from 0 mph to whatever other speed, be it smaller or bigger than 50 mph? However, as we all know, that's not what happens. What's the explanation for this (apparent) clash between the "theoretical" (so to speak) and the "real", "physical" worlds? Any answer is welcome. Thank you.