Physics 1205
Assignment #2



Problem A: It is a beautiful fall day and you decide to drive up to Lake Hefner and jog around the 9.1 mile trail that circles the lake. You notice a bicyclist approaching you wearing a tee-shirt with writing on it. You read the first two lines, but are unable to read the third and final line before he passes. You wonder, "Hmm, if he continues around the lake, I bet I'll see him again, but I should anticipate the time when we'll pass again." You look at your watch and it is 3:07 p.m. Your jogging speed is about 6 miles per hour, and you estimate that the bicyclist was going about 14 miles per hour.

Problem B: You and a friend are riding your bicycles along highway 9 on a sunny fall afternoon. You are traveling at a leisurely 12 miles per hour when your friend passes you going 16 mph. You decide to accelerate so that you can catch your friend and pass her. If you accelerate at a constant rate of 0.25 miles per hour each second until you pass her, how long will she be ahead of you?