A 0.3 kg softball has a velocity of 15 m/s at an angle of 35° below the horizontal just before making contact with the bat. What is the initial linear momentum of the ball? What is the magnitude and direction of the change in momentum of the ball while it is in contact with the bat if the ball leaves the bat with a velocity of (a) 20 m/s, vertically downward and (b) 20 m/s, horizontally away from the batter and back toward the pitcher?