A friend passes by you in a spacecraft traveling at a high speed.He tells you th

Question

A friend passes by you in a spacecraft traveling at a high speed.He tells you that his craft is 17.0 m longand that the identically constructed craft you are sitting in is16.0 m long. (a) According to your observations, how long isyour craft?
m <----- i got thiscorrect
(b) How long is your friend's craft?
m <----- i got thiscorrect
(c) What is the speed of your friend's craft?
___________  c   <---- THIS IS WHAT INEED HELP WITH an incorrect answer i have already tried: .3379
(a) According to your observations, how long isyour craft?
m <----- i got thiscorrect
(b) How long is your friend's craft?
m <----- i got thiscorrect
(c) What is the speed of your friend's craft?
___________  c   <---- THIS IS WHAT INEED HELP WITH an incorrect answer i have already tried: .3379 an incorrect answer i have already tried: .3379

Explanation / Answer

Proper length L = 17 m
relative length L ' = 16 m we know L ' = L [ 1-( v / c) ^ 2] [ 1-( v / c) ^ 2 ] = 0.9411 1-( v / c) ^ 2= 0.8858       ( v/ c) ^ 2 = 0.1141         v / c =0.3379            v = 0.3379 c

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