- #1

renegade05

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**another special R question... need help**

## Homework Statement

Maggie, eleven years old, is very jealous of her younger brother Jacob. Jacob, at

ten years younger, is just a baby, and Maggie feels that he gets all the attention at home.

She sneaks onto a spaceship leaving for Barnard’s Star, 5.96 light years away from the solar system. She is hoping that by the time the ship gets back, she will be the baby of the family. Her plan works and when she returns, she is (biologically) a year younger than Jacob. How old is Jacob when Maggie gets back from her trip? Assume that the trip to Barnard’s Star and back happened at a constant speed and that the ship spent very little time at Barnard’s Star itself.

## Homework Equations

v=d/t

Tsqrt(1-(v/c)^2)=T'

## The Attempt at a Solution

Ok my attempt:

So the problem does not give a velocity however I think I still need to use v=d/t. d=(5.96*2). Thus v=11.92/t

Now I want maggies age(M) when she gets back to be jacobs age(J) - 1.

So:

before:

M = 11

J = 1

After:

M = J -1

J = ?

I am not sure what to do next now! or if this is even right ?

Need some guidance.