For problem 9 in section 3.1, the graph given in this problem does not agree with the description in the text (the graph has the police officer getting to 60 miles per hour in 10 seconds, not 20 seconds). So follow the wording of the problem in the text (and change the graph by crossing off the 10 and 20 on the time axis, and replacing those labels with 20 and 40, so the graph now agrees with the wording in the text).

9. Police chase: A speeder traveling 45 miles per hour (in a 25 60- mph zone) passes a stopped police car which immediately - takes off after the speeder. If the police car speeds up 45 steadily to 60 miles/hour in 20 seconds and then travels at a 30+ - velocity (miles/hr) steady 60 miles/hour, how long and how far before the .of - - - - police car catches the speeder who continued traveling at 45 miles/hour? 10 20 time (seconds)