How fast does a 240 −m spaceship move relative to an observer who measures the ship's...
How fast does a 240 −m spaceship move relative to an observer who measures the ship's length to be 160 m ?
Homework Answers
here ,
length of ship , L0 = 240 m
length of ship observed , L = 160 m
let the speed of spaceship is v
as L = L0 * sqrt(1 - (v/c)^2)
160 = 240 * sqrt(1 - (v/c)^2)
solving for v
v = 0.745*c
the speed of the spaceship realtive to observer is 0.745*c
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