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ถามโจทย์ปัญหา => ถามโจทย์ปัญหาฟิสิกส์อื่นๆ => Topic started by: marshall wu on January 09, 2010, 09:45:18 PM



Title: relative speed of two things moving at nearly speed of light
Post by: marshall wu on January 09, 2010, 09:45:18 PM
how can i measure the relative speed of two things moving at nearly speed of light?

for example, one spaceship is moving east 0.90c relative to the earth. and the another ship is moving west 0.90c relative to the earth?

any suggestion ?

 


Title: Re: relative speed of two things moving at nearly speed of light
Post by: zealzonix on January 10, 2010, 12:05:16 AM
Use the relativistic velocity transformation between the earth frame and a spaceship's frame  :coolsmiley: