If E_k is equals to (1/2)mv^2 and delta E_k is equals to force times distance, then F*s is equals to (1/2)mv^2. But m*(1/2)v^2 is nothing else but mass times the integral of v, which is equals to s (the distance). That means m is equals to F. But F=ma.

So can someone explain to me this retarded ass formula immediately?