(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Outside the International Space Station, a 60 kg astronaut holding a 4.0 kg object (both initially at rest) throws the object at 10 m/s relative to the space station. A 50 kg astronaut, initially at rest, catches the object. What is the speed of separation of the two astronauts?

2. Relevant equations

p = mv

FΔt = Δp

Law of Cons. of Momentum

Pi = Pf

3. The attempt at a solution

Pi = Pf

(4)(10) = (50)(v)

v = 0.8 m/s

which is wrong :( not sure how to approach this question, any help please? thank you!

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Speed of Separation between 2 masses?

**Physics Forums | Science Articles, Homework Help, Discussion**