Răspuns :
d=vxt
d=100x4=400
t=d/v=400/120=3.3
la regula de trei simpal este asa
4 ore....100km/h
x ore......120km/h
x=120x4:100=4,8h
d=100x4=400
t=d/v=400/120=3.3
la regula de trei simpal este asa
4 ore....100km/h
x ore......120km/h
x=120x4:100=4,8h
Δd=Δt·v
⇒Δd=4ore·100km/h
⇒Δd=4·100km
⇒Δd=400km;
⇒daca v=120km/h
Δd=400km
⇒Δt=Δd/v
⇒Δt=400km/120km/h
⇒Δt=400/120[h]
⇒Δt=3,[3]h;
⇒Δd=4ore·100km/h
⇒Δd=4·100km
⇒Δd=400km;
⇒daca v=120km/h
Δd=400km
⇒Δt=Δd/v
⇒Δt=400km/120km/h
⇒Δt=400/120[h]
⇒Δt=3,[3]h;