- #1

TyroneTheDino

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## Homework Statement

An astronaut is pushed from her ship at a velocity of 2m/s. Her weight including her tool belt is 120kg. Remembering Newtons 3rd law, she takes 5 seconds to decide to detach her belt and throw it away from her. The 20kg tool belt leaves her suit as she throws it in front of her 10m/s. If she has 20 minutes of air left in her tank, does she make it?

## Homework Equations

Conservation of Momentum

mv

_{i}=mv

_{f}

Distance

d=vt

## The Attempt at a Solution

I say that the astronaut survives.

Because of distance equation= (2)(5)=10m

Her initial momentum is 240kg m/s

And by throwing the belt in front of her she is propelled at -.4m/s

Since she only traveled 10m she would make it back on time.