[tex]d=42,195 \ km=42 \ 195 \ m \\ t_1=2 \ h \ 14 \ min \ 57 \ s =8 \ 097 \ s \\ t_2=2 \ h \ 15 \ min \ 26 \ s =8 \ 126 \ s \\ t_3=2 \ h \ 15 \ min \ 36 \ s=8 \ 136 \ s \\ \boxed{v_1-?} \\ \boxed{v_2-?} \\ \boxed{v_3-?} \\ \bold{Rezolvare:} \\ \boxed{v=\frac{d}{t}} \\ v_1=\frac{d}{t_1}= \frac{42 \ 195 \ m}{8 \ 097 \ s} \\ \Rightarrow \boxed{v_1=5,2 \ m/s=18,76 \ km/h}; \\ v_2- \frac{d}{t_2}= \frac{42 \ 195 \ m}{8 \ 126 \ s} \\ \Rightarrow \boxed{v_2=5,19 \ m/s=18,69 \ km/h} ; [/tex]
[tex]v_3= \frac{d}{t_3}= \frac{42 \ 195 \ m}{8 \ 136 s} \\ \Rightarrow \boxed{v_3=5,186 \ m/s=18,67 \ km/h}.[/tex]
