Final speed of two billiard balls

[pebbles]

Both have mass of .5 kg and speed of 2.8 m/s; collide completely inelastically

Do I use the conservation of momentum formula? v2= m1/m1 + m2 * v1?

Ugh.

 

[Doc Al]

Use conservation of momentum. (Not sure about that formula, though.) Why not post the exact problem?

 

[pebbles]

A billiard ball with mass .5 kg has a speed of 2.8 m/s and collides completely inelastically with a ball of same mass.

Find the final speed of two balls.


What formula do you know for the conservation of momentum?
Thanks!

 

[Doc Al]

The formula you quoted will work fine for this problem.

 

[pebbles]

yaaay! ok. that's a lot!