posted by Misty .
A 2 kg ball of putty moving to the right at 3m/s has a head-on inelastic collision with a 1 kg ball of putty moving to the left at 3m/s. What is the final magnitude and direction of the velocity of the stuck together balls after the collision?
Apply conservation of linear momentum.
2*3 - 1*3 = (2+1)*Vfinal
Momentum remains to the right, since the right-moving mass had more momentum.