1. The problem statement, all variables and given/known data V of Alpha at T1 = 10^7 V of Alpha at T2 = 0.6 x 10^7 Mass of Alpha = 4x mass of proton 2. Relevant equations P=MV P1 = P2 3. The attempt at a solution Bear in mind that I am a year 11 IGCSE student. This is from the textbook at the end of the chapter of forces and motion detailing simple momentum and speed equations. I've tried many solutions that produce varied results for me.