Minimize time, minimize distance.
要求最短时间和最短路程。
So I could do that in probably two and a half hours.
我可以用大约两个半小时的时间走完这段路程。
Second formula tries to relate the final velocity of some time, t, to the initial velocity and the distance traveled with no reference to time.
第二个式子能把某段时间t的末速度,和初速度,经过的路程联系在一起,并且不引入时间
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