70p
Macar una. urgent!!​


70pMacar Una Urgent class=

Răspuns :

1.

[tex]p = \frac{l}{t} = \frac{f.x}{t} = \frac{f.v.t}{t} = f.v[/tex]

72 km/h=20m/

[tex]f = \frac{p}{v} [/tex]

F=3735,5/20=.....