Tutorial 2 Homework – Due in tutorial, week of 09/22-09/26 Name Interpreting graphs and equations Tutorial section Problems in Fall 2006 from Physics by Inquiry, L.C. McDermott et al (Wiley, NY, 1996). HW2-1 I. Graphs A. On the velocity vs. time graph at right: 1. What do the three different lines represent? 2. What is the interpretation of the slope of each line? 3. What is the interpretation of the intercept of each line (the place where it crosses the vertical axis)? B. Suppose a small ball rolling along a track produced the motion represented on the graph at right. What might the track have looked like? Sketch an arrangement of tracks you might set up in lab to produce that motion. Describe the motion in words. (you can continue onto next page, if you need more space)Tutorial 2 Homework Name Interpreting graphs and equations Tutorial section Problems adapted in Fall 2006 from Physics by Inquiry, L.C. McDermott et al (Wiley, NY, 1996). HW2-2 II. Algebraic expressions A. A bug is 10 feet away from the base of a tree at noon. It is creeping slowly but steadily away from the tree at a constant speed v. 1. Write an algebraic expression for the bug’s distance from the tree at time t, where t is the time that has passed since noon. 2. If the bug is 30 feet from the tree at 12:50 P.M., when will it be 60 feet from the tree? B. (Before answering this question, please check for section specific instructions on the tutorial website) A traveler left home on a trip across the desert. He took along enough provisions for a 19-day journey. He is able to travel with a constant speed s km/day. After 15 days, he is still 100 km from his destination. 1. Write an expression for the number of days of provisions he will have left when he arrives. Explain your reasoning in detail. 2. Can your expression ever be negative? What would that mean and
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