I used to visit Phoenix, AZ every spring, attending a campout with N = 5000 likeminded people. The trip is a distance d = 560 km. (a) For the first two hours I drive an average speed v = 100 km/h, and for the rest of the distance I average v2 = 120 km/h. How long time does the trip take for me? (b) What is my average speed vm_ave for the entire trip? (c) My friend makes the same trip and is hauling a trailer so he goes really slowly up and down the hills. He starts out initially going vo = 90 km/h, and accelerates uniformly for the entire rest of the trip at a = 5 km/h. How long does the trip thim take for him? (d) What is his average speed vh_ave. (e) If he leaves before me with a 25 minute head start, does he arrive at the site first, or do I, and by how many minutes? [Hints: Part (c) requires solving a quadratic. Also, do not make any unit conversions anywhere in this problem.]