1. The problem statement, all variables and given/known data A 25g object moving to the right at 20cm/s overtakes and collides elastically with a 10g object moving in the same direction at 15 cm/s. Find the velocity of each object after the collision 2. Relevant equations Ʃp=Ʃp' v1+v1'=v2+v2' 3. The attempt at a solution First I tried to find one one of the v primes by using the momentum equation 25(20)+10(15)=25v1'+10v2' and then simplifying it to 500+150=250(v1'+v2') 650-250v1'=v2' Afterwards I plugged this in for v2' in v1+v1'=v2+v2' and solved through to get 2.57 cm/s for v1' which I know is incorrect. I know I did something wrong in the step above but I don't know how to approach this.