Recent content by Scalise

Hello, Someone could explain me why in the derivation below the mass m is divided by 2 in the last step?: ##\int\vec{F}\cdot d\vec{s}=m\int\frac{d\vec{v}}{dt}\cdot\vec{v}dt=\frac{m}{2}\int \frac{d}{dt}(v^{2})dt##