A halfback with a mass m4 = 102 kg is running up field with a speed of v4 = 5.8 m/s. His angle of attack is y = 39 (relative to y axis). He is tackled by an opponent with a mass mj = 94 kg, who approaches the halfback at an angle B = 35 with a velocity v, = 7.4 m/s. Assume the collision is perfectly inelastic. a) Calculate the magnitude and direction of the resultant velocity of the two players just after the tackle. (3 pts.) b) Calculate the change in kinetic energy for the sysfem of the two players.(3 pts.) Situation before impact KX W I v, Y, mi Halfback