22 22. A 0.29-kg purple box is slid eastward on a frictionless surface into a dark room, where it strikes an initially stationary yellow box, which has a mass of 0.24 kg. The purple box emerges from the room at an angle of 44" north of east. The speed of the purple box is originally 7.8 m/s and is 4.7 m/s after the collision. Calculate the angle at which the yellow box travels after the collision. 4.0 south of east 14.2 south of east a. b. C. 36.5 south of east d. 24.1 south of east e. 29.9 south of east