Resulting velocity

1. The problem statement, all variables and given/known data
On Earth, an astronaut and equipment weight 1,960.0 N. While weightless inspace, the astronaut fires a 100 N rocket backpack for 2.0 s. What is the resulting velocity of the astronauts and equipment?


2. Relevant equations

?

3. The attempt at a solution
t=2.0 s
w=mg


i am super lost...
idk which equation to use :S
i only know of
v=d/t :S
please help... i would truly appreciate it....
 

LowlyPion

Homework Helper
3,055
4
You know the weight, so figure the mass.

You know the force, so figure the acceleration. F = M*a after all.

You know the acceleration, you know the time ... you know the answer.
 

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