How Does Throwing a Snowball Affect an Ice Skater's Movement?

[MBURNS001]

Homework Statement

A 60Kg ice skater, at rest on frictionaless lce, tosses a 12kg snowball with velocity given by v= 3.0i + 4.0j m/s, where the x and y axes are both in the horizontal plane. What is the subsequent belocity of the skater?

Homework Equations

p=mv

The Attempt at a Solution

I thought this was a momentum problem where I had to convert the velocity out of i + j form. I think it is 5 m/s.

I tried m1v1=m2v2 but i am not sure if that is right...

 

[JoAuSc]

I tried m1v1=m2v2 but i am not sure if that is right...

It might be. What are m1, m2, v1, and v2?