Răspuns :
Sper ca e bine... si eu sunt in a 6.a si am evaluarea maine... SUCCES!!
v=72km/h; Δt=30s;
⇒Δd=v·Δt
⇒Δd=72km/h·30s
⇒Δd=72km/h·30/3600h
⇒Δd=72km/h·3/360h
⇒Δd=72km/h·1/120h⇒se reduce h[ora] cu h[ora];
⇒Δd=72km/120
⇒Δd=0,6km=600m;
⇒Δd=v·Δt
⇒Δd=72km/h·30s
⇒Δd=72km/h·30/3600h
⇒Δd=72km/h·3/360h
⇒Δd=72km/h·1/120h⇒se reduce h[ora] cu h[ora];
⇒Δd=72km/120
⇒Δd=0,6km=600m;