m a's a rate. How sweet, it's sound For constant a's like g. No ounce is lost if V is found Quite small compared to c. m a's your force if you're a Rock, But not in rocketry. You'll need the full dp/dt: Add dm/dt times V. When Euler's used 10,000 times For masses near the sun We know the roundoff error climbs Each time a time step's done. m a's a rate. How sweet, it's sound For constant a's like g. No ounce is lost if V is found Quite small compared to c. |