Just before it is struck by a racket, a tennis ball weighing 0.560 n has a velocity of ((20.0 m/s)i - (4.0 m/s)j). during the 3 ms that the racket and ball are in contact, the net force on the ball is constant and equal to n)i + (110 n)j. a) what are the x and y-components of the impulse of the net force applied tothe ball ? b) what are the x and y-components of the final velocity of the ball ?