A tennis racket hits a tennis ball with a force of F=at-bt^2, where a = 1110N/ms , b = 410N/ms^2 , and t is the time (in milliseconds). The ball is in contact with the racket for 3.25ms . If the tennis ball has a mass of 58.2g , what is the resulting velocity of the ball, v, after the ball is hit by the racket?