Question

ajutor .
dau coroana

Answer 1

Viteza = Distanta/Timp

viteza... V

Timpul... T

Distanta... D

V1 = t1/d1= $2\frac{2}{5}km/\frac{3}{4}h= \frac{12}{5}km/\frac{3}{4}h= \frac{12}{5}km*\frac{4}{3}h= \frac{16}{5}km/h=3\frac{1}{5}km/h$

D2 = v2d2 = 11 1/2 * 2 2/3= 23/2 * 8/3 =30 2/3Km

T3 = d3/v3 = 4,7km/15 2/3 km/h= 47/10 / 47/3 = 73,6(3) h