PH 125 Midterm: ph125_f17_exam2
Document Summary
Instructions: solve 3 of 5 problems below. All problems have equal weight: do your work on separate sheets rather than on the exam, do not hesitate to ask if you are unsure what a problem is asking for, show your work for full credit. The two objects stick together, and begin to move up the (frictionless) incline. To what height above level ground does the combined mass rise: a wagon is coasting along a level sidewalk at 5. 00 m/s. You are standing on a low wall, and you drop vertically into the wagon as it passes by. The wagon has an inertia of 100 kg, and your inertia is 50. 0 kg. (a) use conservation of momentum to determine the speed of the wagon after you are in it. (b) The halfback is initially going west at 10 m/s, and his opponent is initially going east at 4. 37 m/s.
