The small 4-kg collar starting from rest at A slides down along the smooth rod. During the motion, the collar is acted upon by a force F= {10xi in meters. 6yj+2zj} N, where x, y, z are A m 5 m Part A 4 m B 0.5 m Determine the collar's speed when it strikes the wall at B. Express your answer to three significant figures and include the appropriate units. VB = Value Units ?