本题目来源于试卷: Space Time & Motion A.5 Special Relativity，类别为 IB物理学
[单选题]
At a relativistic speed, a rockecnq1vp5;q9*o/ z3*eeya 1qxl0bua uat journeyed from Earf)xe j88o ,xdk ywmy*+th to Saturn. The duration of the travel is measured accjkw )m+f ,y8oy xdxe8*ording to the stationary observer on earth as $t$. The length of the rocket is measured according to the observer in the rocket as $L$. Which of the following is correct for the time of travel according to the observer in the rocket and the length of the rocket according to the observer on the Earth?
A. Time of travel (rocket observer) is less than t; Length of the rocket (Earth observer) is shorter than L
B. Time of travel (rocket observer) is less than t; Length of the rocket (Earth observer) is longer than L
C. Time of travel (rocket observer) is greater than t; Length of the rocket (Earth observer) is shorter than L
D. Time of travel (rocket observer) is greater than t; Length of the rocket (Earth observer) is longer than L
参考答案: A
本题详细解析:
At relativistic speeds, the durat8 edes/ot:4 iiu z-f)oion of an event measured by an observer in the same reference f)4:fe/iuozi8d ts -oe rame as the event is shorter than the measured time by the stationary observer due to dime dilation. Therefore, the time of travel should be measured as less than $t$. Similarly, when an object moves at a relativistic speed relative to an observer, its length appears to contract in the direction of motion from the perspective of the stationary observer. Hence, the length of the rocket should be shorter than $L$.
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