推 nomorethings:他的解釋...很不嚴謹 ... 08/22 14:46
推 vaakaa:同感XD 08/22 14:55
以上恕刪
: : 我想當初Serway也應該是從這個角度寫的
: 那我也真想知道他是怎樣寫的 有機會po版吧
他的解答:
The car's average velocity cannot be evaluated unambiguously with the
information given, but it must be some value between 0 and 100 m/s.
Because the car will have every instantaneous velocity between 0 and
100 m/s at some time during the interval,
there must be some instantat which the instantaneous velocity is
equal to the average velocity.
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