Help with this 9th grade "motion" problem 1. The problem statement, all variables and given/known data 2 stones are thrown vertically upwards with initial velocities U1 & U2. Prove that heights recahed by them is in ration U1squared:U2squared. 2. Relevant equations S=u+at u being initial velocity 3. The attempt at a solution since a and t will cancel out, ration should be u1: u2 not the squared. What am I missing?