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## Homework Statement

A woman is 2.0 m tall and has a mass of 60 kg. She moves past an observer with the direction of the motion parallel to her height. The observer measures her relativistic momentum to have a magnitude of 2.30x10

^{10}kg·m/s. What does the observer measure for her height?

## Homework Equations

L=L

_{o}√1 - (v

^{2}/c

^{2})

p=mv/√1 - (v

^{2}/c

^{2})

## The Attempt at a Solution

I'm pretty sure that these are what the variables are

L

_{o}= 2.0m proper length

p=2.3x10

^{10}

m=60kg

we want to solve for L

my problem is I don't know what v is, if I did i could find it.

I saw that L/L

_{o}= mv/p

so L= L

_{o}mv/p right?

but i have no idea how to get v. i haven't had math in a while! any ideas or can you help me? I've tried an online equation solver for didn't work...