Achild throws a baseball directly upward. what are the signs of the velocity and acceleration of the ball immediately after the ball leaves the child's hand? enter the correct sign for the baseball's velocity and the correct sign for the baseball's acceleration, separated by a comma. for example, if you think that the velocity is positive and the acceleration is negative, then you would enter +,- . if you think that both are zero, then you would enter 0,0 .