Comment by newaccount74
4 years ago
You are both wrong. Air resistance increases quadratically with speed, not cubically. And you mixed up polynomial with exponential.
Quadratic: x^2
Cubic: x^3
Polynomial (eg. 3rd degree): a + b x + c x^2 + d x^3
Exponential: e^x
Drag force rises quadratically with speed. Power is force dot velocity; in this case force and velocity are in the same direction, so dot product becomes simple mulitiplication making drag power (exertion, formally: work per unit time) cubic with speed.
Oh, you are right! Sorry.
I'm not wrong, because I wasn't commenting on the power of the exponent.
But thanks for being a typical HN.