1. The problem statement, all variables and given/known data A 3.0 g coin moving to the right at 26.0 cm/s makes an elastic head-on collision with a 12.0 g coin that is initially at rest. After the collision, the 3.0 g coin moves to the left at 12.5 cm/s. (a) Find the final velocity of the other coin. _____cm/s to the right (b) Find the amount of kinetic energy transferred to the 12.0 g coin. _____Joules 2. Relevant equations for part a, i know you have to do conversions to get to M and Kg. for part b, .5mv^2 3. The attempt at a solution i know that KE of the 2nd coin = (m of second coin)(.5)(Velocity of second coin ^2) but i'm STUCK on part A!!!!