Răspuns: [tex]\bf \pink{\underline{t = 180 ~s}}[/tex]
Explicație:
[tex]\red{\bf Formula:~~\boxed{\bf V = \dfrac{d}{t} }}[/tex]
V → viteza
d → distanța
t → timpul
[tex]\bf V = 120 ~km/h = \dfrac{120~\cdot 1000~m}{3600 ~s} = \dfrac{100~m}{3~s}[/tex]
[tex]\bf d = 6~km = 6\cdot 1000=6000 ~m[/tex]
[tex]\bf \dfrac{100~m}{3~s} = \dfrac{6000~m}{t} \Rightarrow t = \dfrac{60\not00~\not m\cdot 3~s}{1\not00~\not m} \Rightarrow \red{\underline{t = 180 ~s}}[/tex]
==pav38==
