1. The problem statement, all variables and given/known data A firecracker of mass 18g explodes into three pieces of equal mass. The first piece flies off at a speed 24m/s. The second piece flies at 18m/s at an angle 110 Degrees from the direction of the first piece. Find the speed and direction of the third piece. 2. Relevant equations P=m∆v Ek=0.5mv^2 W=F∆dcos∅ W=∆Ek And I'm not really sure... 3. The attempt at a solution Now I know that the momentums have to add up to zero. So mv1+mv2+mv3=0. p1=(0.006)(24)=0.144kg m/s x1=-0.1353 y1=-0.049251 p2=(0.006)(18)=0.108kg m/s x2=0.101484 y2=0.0369384 0.144+0.108+0.006v3=0 v3=42m/s I don't know if that's right but now I don't know how to find the direction? V1y=-8.2085m/s V1x=-22.5526m/s V2y=6.1564m/s V2x=16.914m/s This is just for a study sheet, I don't hand it in. But the test is tomorrow so I really need help!