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January 31, 2015

January 31, 2015

Posted by **Katie** on Wednesday, January 30, 2013 at 9:02am.

A) How fast is Anna's spaceship moving?

v/c = 0.781

L = Lo / Yv

--> 25 = 40 (square root) 1 - (v/c)^2

But how do you solve for v? I tried subtracting 25 and squaring it to get rid of the square root. But I just don't know how to get to v = 0.781 c

Thank you for any help

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