Odpowiedź :
Δv = 340km/h - 250km/h = 90km/h = 25m/s
t = 20s
a = Δv/t
a = 25m/s/20s = 1,25m/s²
----------------------------------------------------------------------------------------------------
Litterarum radices amarae sunt, fructus iucundiores
Pozdrawiam :)
[tex]Dane:\\ v_1=250\frac{km}{h}\\ v_2=340\frac{km}{h}\\ t=20s\\ Oblicz:\\ a=?\\ Rozwiazanie:\\ \Delta v=v_2-v_1\\ \Delta v=340-250\\ \Delta v=90\frac{km}{h}=25\frac{m}{s}\\\\ a=\frac{\Delta v}{t}\\\\ a=\frac{25}{20}\\\\ a=1,25\frac{m}{s^2}[/tex]