1. The problem statement, all variables and given/known data A ball (A) is rolling west at 3m/s and has a mass of 1kg. Another ball (B) has a mass of 2kg and is stationary. After a collision, ball A moves south at 2 m/s. Calculate the momentum and velocity of ball B after the collision. 2. Relevant equations Pa(initial)=Pa(final)+Pb(final P=m x v a2+b2=c2 3. The attempt at a solution Pa(initial)=1kg(3m/s W)= 3kgm/s W Pa(final)=1kg(2m/s S)= 2kgm/s S Pa(initial)-Pa(final)=Pb(final) a vector diagram gives me a right triangle. Pythagoras gives me c=Pb(final) as 3.6kgm/s 33.7 degrees North of West. Pb=m x v 3.6kgm/s 33.7degrees north of west /2 kg= vb vb= 1.8 m/s 33.7 degrees north of west. Is this correct?