I\'m trying to find the speed for the first and secondparticles after collision.

Question

I'm trying to find the speed for the first and secondparticles after collision.                      IncidentParticle                                      TargetParticle Mass              m1=2.0gram                                          m2=1.0gram Initialspeed     v1i=8.0m/s                                                v2i=0m/s FinalSpeed         v1f=?                                                      v2f=?
1. v1i-v2i=v1f-v2f (velocity 1 initial- velocity 2initial= velocity 1final - velocity 2 final) v2f-v1f=8.0m/s-0m/s=8m/s -------(1) 2. m1v1i + m2v2i = m1v1f + m2v2f (2g)(8.0m/s) + (1.0g)(0m/s)= (2.0g)(v1f) + (1.0g)(v2f) I don't understand how they got thisnext part............v2f + 2v1f=16g m/s and then I don't know how they took this information to findthe speeds of both particles after the collision. I'm trying to find the speed for the first and secondparticles after collision.                      IncidentParticle                                      TargetParticle Mass              m1=2.0gram                                          m2=1.0gram Initialspeed     v1i=8.0m/s                                                v2i=0m/s FinalSpeed         v1f=?                                                      v2f=?
1. v1i-v2i=v1f-v2f (velocity 1 initial- velocity 2initial= velocity 1final - velocity 2 final) v2f-v1f=8.0m/s-0m/s=8m/s -------(1) 2. m1v1i + m2v2i = m1v1f + m2v2f (2g)(8.0m/s) + (1.0g)(0m/s)= (2.0g)(v1f) + (1.0g)(v2f) I don't understand how they got thisnext part............v2f + 2v1f=16g m/s and then I don't know how they took this information to findthe speeds of both particles after the collision.

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