Question: ? _ _ _ 1 1 . T w o a l i e n s p a c e s h i p s

?_{___11 . T w o a l i e n s p a c e s h i p s a r e t r a v e l i n g}

at0.95c,onedirectlytowardtheEarthandonedirectlyawayfromtheEarth.Atoneinstant,bothspaceshipshappentobethesamedistancefromtheEarthandtheyfirealaserattheEarth.ThelightfromwhichspaceshipreachestheEarthfirstaccordingtoanobserveronEarth?a)ThelightfromthespaceshipmovingtowardtheEartharrivesfirst.b)ThelightfromthespaceshipmovingawayfromtheEartharrivesfirst.c)Thelightfromthetwoshipsarrivesatthesametime.d)TheobserverhasnowaytodeterminewhichlightreachestheEarthfirst

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