- #1

trinity8486

- 1

- 0

**Momentum in Space --- How long will it take..?**

## Homework Statement

A 66kg astronaut becomes separated from the shuttle while on a space walk. She finds herself 45.3m away from the shuttle and moving with zero speed relative to the shuttle. She has a .912kg camera in her hand and decides to get back to the shuttle by throwing the camera at a speed of 12m/s in the opposite direction. How long will it take her to reach the shuttle? Answer in mins.

## Homework Equations

p=m*v

m1*v1=m2*v2

v=d/t

## The Attempt at a Solution

Since it is in space, I know that the momentum of the camera will equal that of the astronaut. So MassofCamera * VelocityOfCamera = MassOfAstronaut * VelocityOfAstronaut.

.912kg*12m/s=66kg*v2

v2= .165281m/s

Velocity is distance divided by time, so time = distance/velocity.

45.3m/.165281m/s = 274s = 4.6min. According to the quest homework system, this answer is wrong. Please help!