7. Alpha and Beta are stopped in opposite directions of a red light. Beta has a delayed green. When the Alpha's light turns green, Alpha accelerates at 2 m/s north for the first 9 seconds and then driving at a constant velocity for 7 seconds and then accelerates south at 2 m/s for the next 9 seconds to come to rest. 3 seconds after Alpha started, Beta's light turns green. Beta starts accelerating at 3 m/s south for 6 seconds, and then come to rest. drives at a constant velocity for 10 seconds and then accelerates north at 3 m/s2 for the next 6 seconds to a. Graph the velocity of both travelers as a function of time starting at time t=0 when Alpha's light turns green. Let the positive direction be North. Use a solid line for Alpha's velocity and a dashed line for Beta's velocity. Indicate on the graph above the velocity that is reached by both Mr. Beta and Mr. Alpha. Make sure that you consider the sign of the velocity. x (m/s ): t (s) b. Find Alpha's total displacement from the graph above c. Find Beta's total displacement from the graph above d. Find the distance that Alpha is separated from Beta