[问答题]
You travel from point A to point B in a car moving at a conyhfnw c qd(lhxoxe a2-,r9d -ot*902 fstant speed of (e(q5-yxn aw j Then you travel the same distance from point B to another point C, moving at a constant speed of 90km/h . Is your average speed for the entire trip from A to C 80km/h ? Expyn- a((xqejw5 lain why or why not.
