Tom is on a bus that is moving with constant speed in the +x direction while...
Tom is on a bus that is moving with constant speed in the +x direction while Fred is standing on the sidewalk. Both Fred and Tom are holding identical metersticks. As seen on Fred's frame of reference, Tom's meterstick is only 0.8 m long. What is the speed of the bus relative to the sidewalk?
edit : rest length of meterstick is = 1 m long
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Homework Answers
Ans: We know by length contraction the lengths in moving frames will appear shorter by Lorentz factor.
Here true length is l = 1 m
and observed length is l' = 0.8 m
Therefore,
Therefore option A is correct.
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