Question

Un biciclist a mers cu v1=12km/h timp de 2 min cu viteza v2 =24 km/h timp de 6 min ,v 3 = 48 km/h timpmde 2 min .calculeaza distanta t parcursa de biciclist in intervalul de timp studiat . Aflati viteza medie de timp studiat

Answer 1

V1=12km/h
t1=1/30h
v2=24km/h
t2=0.1h
v3=48km/h
t3=1/30h
_______
dt-?
Vm-?
dt=d1+d2+d3=v1t1+v2t2+v3t3=0.4+2,4+1,6=4,4km
Vm=dt/tt=dt/(t1+t2+t3)=4,4/0,166=26,41km/h