1. The problem statement, all variables and given/known data (It's just a simple question.) A ball is thrown straight up in the air so that it rises to a maximum height much greater than the thrower's height. Is the magnitude of the acceleration greater while it is being thrown or after it is thrown? 2. Relevant equations 1D kinematics. 3. The attempt at a solution Magnitude of the acceleration after the ball is thrown is g. But I am having trouble in conceptualizing what is happening when the ball is being thrown. Surely when I am throwing the ball I am giving it acceleration. But how can I tell if it is greater or smaller than g?