speed formula

[brabus]

hi
how can i find speed from power
i need a formula
thanks in advance

[GRiDRaceTech]

What do you mean by speed? Do you mean top speed? Acceleration?

All of these things have to take into account parasitic losses, drag, wind, temperature, etc.

Thus, there is no formula. Go out to Bonneville and test the top speed. Get to a drag track and test acceleration.