P112 Fall 2008 Homework #1, due at your second section, Week of Sep 1-5, 2008 Reading: 1.1-1.10, 2.1-2.5 Not all concepts will be covered in class – you are responsible for all material in the reading and in the homework problems. Problems: 1. A bicycle, going up hill, travels 10 miles in 1 hour, then, going down hill, it travels 10 miles in 30 minutes. What is the bicycle’s average speed in miles per hour? 2. The official world land speed record is 1228.0 km/h, set in 1997 by Andy Green in a jet engine car. Express this speed in meters per second. 3. Estimate the percent error in measuring a) a distance of about 75cm with a meter stick b) a mass of about 12 g with a chemical balance c) a time interval of about 6 min with a stopwatch. 4. In America, we measure fuel efficiency of our cars by citing the number of miles you can drive on one gallon of gas (mi/gal). In Europe, the same information is given by quoting how many liters of gas it takes to go 100 km (L/100 km). a.
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This note was uploaded on 10/04/2008 for the course PHYS 1112 taught by Professor Leclair,a during the Fall '07 term at Cornell.