Q$3$: Linear Conservation: P

A $102$kg astronaut wearing a $201$kg spacesuit is deployed on a one man mission to space walk

with his trusty $1\mathrm{.}00$kg wrench when

$1.$ A Coronal Mass Ejection $($more or less a huge solar flare$)$ occurs, and the toxic solar

wind from the event will arrive in $501$s$.$

$2.$ His tether to the ship comes loose and floats away

$3.$ He notes that he only has $242$s worth of air remaining in his suit, but he is stationary

$10\mathrm{.}1$m away from the air lock.

$$ If he is outside the ship when the solar wind hits he will die a slow, horrible, painful death

due to the radiation exposure.

$$ If he takes too long his air supply will run out and he will die a relatively quick, horrible,

death due to asphyxiation.

$$ If he tries to disconnect his air supply he will die a quick, horrible, painful death due to the

vacuum exposure.

$$ If he survives he will die a medium speed death in $2067$ when evil aliens de$-$spin the earth

with their vile torque machine.

Having taken physics $218$ an idea comes to mind. Hmmm, perhaps he can throw the wrench

away from the airlock with a velocity of $20\mathrm{.}7$m$/$s $($It$$s very hard to move in a space suit$)$ and use

conservation of momentum to escape.

How fast does he die?

$1)$ Fast

$2)$ Slow

$3)$ Medium

$($Explain why, and use the equations and calculated values to prove your point$)$: