1. The problem statement, all variables and given/known data 1) A baseball is thrown straight up. The drag force is proportional to v^2. In terms of g, what is the y-component of the balls acc., when it's speed is half is terminal speed and it is moving up? When it is moving down? 3. The attempt at a solution 1) When the ball is moving up, the net force is: m*a = m*(-g) + v^2*D It's the part with the half terminal speed that I am confused about. When it is moving down, net force is: m*a = m*g - v^2*D. Again, the half terminal speed is confusing.