Oblicz szybkosc ciala po 12sekundach spadania wyraz ja w km/h    PILE!!!

a= v/t  v = t* a     a= 10 m/s   v= 12 * 10 v = 120 m/s    = 432 km/h 

[latex]t=12s \\ gapprox 10N/kg \\ h=frac{gt^2}{2} i h=frac{V^2}{2g} \\ frac{gt^2}{2}=frac{V^2}{2g} \\ 2V^2=2g^2t^2|:2 \\ V=sqrt{frac{2g^2t^2}{2}}=sqrt{frac{2 cdot 10^2 cdot 12^2}{2}}=120m/s \\ 120m/s=120 cdot frac{0,001km}{frac{1}{3600}h}=432km/h[/latex]