Homework – Chapter 2

Required:

Questions: 3,11,13,16

Problems: 5,14,27,29,33,40, Reality Check, and Dr. H’s Reality Check

Reality Check: Pretend you were teaching this course, and you wanted to write an interesting problem that would be applicable to something in real life. Write the problem and provide a solution.

Your grade will be based on: 1.) The difficulty of the Problem

2.) A correct Solution

3.) Submitting a Problem

Dr. Hinaus’ Reality Check - My mom got a new Corvette this summer. I was out driving with my dad and wanted to see how much power this thing really had. So when I was at a stop sign, I nearly floored it. At the other side of the intersection I was doing about 35 mph. Approximate the length of an intersection so you may approximate the acceleration of the car. How many g’s of acceleration is this (1g = 9.8 m/s²)?

Suggested

Questions: 1, 2, 10, 12, 15

Problems: 7, 16, 26, 30, 36, 41

Answers:

14. 5.2 s

40. 4.8 m/s, .99s

16. 6.25m/s/s , 0.6 g’s

26. 390 m/s/s, 39.8 g’s

30. Vehicle can stop in time. Stopping Distance = 15.8m

36. a.) 32 m b.) 5.1 sec.