The fulll problem to my momemtum problem .

[jamiescience]

the fulll problem to my momentum problem...

Homework Statement

a 1.0*10^4kg spacecraft is traveling through space with a speed of 1200 m/s realtive to earth. a thruster fires for 2.0 min, exerting a continuous force of 25kN on the spacecraft in a direction opposite the spacecraft s motion . calculate the initial momentum and the fianl momentum kof the spacecraft .

Homework Equations

The Attempt at a Solution

 

[uman]

I have found a clever and elegant solution, but it is too long for this post to contain.

 

[uman]

Note: My response was sarcastic, since when I posted it you hadn't yet included the problem statement! Sorry for any confusion.

Do you know the formula that defines momentum? That should give you the initial momentum pretty easily. As for the final momentum, there are multiple ways of finding it, but they probably want you to use the fact that impulse is equal to change in momentum.