Question

la campionatele mondiale de la tokyo (1991) carl lewis a stabilit recordul mondial la 100m plat parcurgand aceasta distanta in 9,86s , calculeaza viteza medie in m/s si in km/h

Answer 1

$d=100 \ m \\ t=9,86 \ s \\ \boxed{v-?} \\ \bold{Rezolvare:} \\ \boxed{v= \frac{d}{t}} \\ v=\frac{100 \ m}{9,86 \ s} \\ \Rightarrow \boxed{v=10.14 \ m/s=36,5 \ m/s}.$