Question

hmmmmm
voi stiti????!?!?!

Answer 1

v= 54km/h = 15 m/s
d= 90m
∆t= ?
v= d/ ∆t ➡∆ t = d/v = 90 m/15 m/s ( se simplifică m ) = 6 s

Answer 2

[tex]\displaystyle Se~da:\\ \\ d=90m\\ \\ v=54\frac {km}h=15\frac ms\\ \\ t=?s\\ \\ \\ Formule:\\ \\ d=v\times t\Rightarrow t=\frac dv\\ \\ \\ Calcule:\\ \\ t=\frac{90}{15}=6s[/tex]