Calculating 2D Momentum Collision with Unknown Speeds and Angles

[Theudius]

1.

Homework Equations

[/B]
P = mv

The Attempt at a Solution

[/B]
VCos(30) + 0 = nCos(60) + 2Cos(20)
VSin(30) + 0 = nSin(60) + 2Sin(20)

where I let n = any speed,
I'm not sure if my attempt at the solution is correct.

 

[rude man]

1. View attachment 211369

Homework Equations

[/B]
P = mv

The Attempt at a Solution

[/B]
VCos(30) + 0 = nCos(60) + 2Cos(20)
VSin(30) + 0 = nSin(60) + 2Sin(20)

Check signs in 2nd equation.

 

[Theudius]

I don't see anything wrong with the signs in the second equation could you explain further also how would I obtain V?

 

[rude man]

I don't see anything wrong with the signs in the second equation could you explain further

What direction does the cue ball go after impact?

also how would I obtain V?

2 equations, 2 unknowns.[/QUOTE]

 

[Ray Vickson]

I don't see anything wrong with the signs in the second equation could you explain further also how would I obtain V?

The final angles are $+60^o$ for red and $-20^o$ for white.