What position will have the smallest magnitude of vertical velocity?

-- The magnitude of acceleration is the same at all the positions.  It's 9.8 meters per second-squared downward if this is all happeningon Earth.-- The smallest magnitude of vertical velocity has to be at the top ... point-B.In order to change from moving up to moving down, there has to be an instant when the vertical velocity is zero, and it can't get any smaller than that.