選B
如果有圖就更好了.
根據(jù)題目可以看出來物體相對的運動方向是沿著機器人腳趾頭到腳跟這個方向運動的
因為速度接近于光速c,而根據(jù)相對論可以知道在物體運動速度接近光速時,與運動方向一致的軸上的長度會變化,人身邊的機器人相對人是靜止的,而相對人運動的機器人的腳趾頭到腳跟的距離會相對變短.所以選B
一道sat2物理題
一道sat2物理題
Two identical,human-looking robots are standing and facing forward in separate spaceships.Both ships are moving at 0.8c but are traveling in opposite directions,as shown above.If a person on the ship with robot A could make measurements on both robots,which of the following would the person observe to be different?
A the robot's height
B the length of the robots' feetfrom toe to heel
C the width of the robot's face
D the length of robots' legs
E the width of the robots' shoulders
Two identical,human-looking robots are standing and facing forward in separate spaceships.Both ships are moving at 0.8c but are traveling in opposite directions,as shown above.If a person on the ship with robot A could make measurements on both robots,which of the following would the person observe to be different?
A the robot's height
B the length of the robots' feetfrom toe to heel
C the width of the robot's face
D the length of robots' legs
E the width of the robots' shoulders
英語人氣：815 ℃時間：2020-06-20 14:44:48
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