A meter stick travels at a speed of 0.68c relative to an observer in a inertial frame. According to the observer, how long is the meter stick if it is oriented?
(a)along the direction of its motion?
(b)perpendicular to the direction of its motion?
一道物理题,我没看懂,谁能帮我翻译一下?
(a)along the direction of its motion?
(b)perpendicular to the direction of its motion?
一道物理题,我没看懂,谁能帮我翻译一下?