a baseball approaches home plate at a speed of 41.0 m/s, moving horizontally just before being hit by a bat. the batter hits a pop-up such that after hitting the bat, the baseball is moving at 51.0 m/s straight up. the ball has a mass of 145 g and is in contact with the bat for 2.10 ms. what is the average vector force the ball exerts on the bat during their interaction? (let the x-direction be in the initial direction of motion, and the y-direction be up.)