Answers for this week's homework

Hi folks,

Several folks have emailed me indicating that they are not quite sure if they are getting it for this week's homework. Here are the answers to the math problems. Be sure to do the problems FIRST before looking at the answers. Also, if you get it wrong, redo the problem and be sure you know how to do it. This material will be quizzed on so be like a Boy Scout and "Be Prepared". :)

1. 400x2=800 joules (100lbx4=400 newtons)
1 calorie= 4.184 joules
1 Joule = .2389 calories
800x .2389 = 191.12


3. 40x400 = 16000 joules
.2389x16000 = 3822 calories

4. 1.3x10^8 = 130,000,000/400 = 325000 meters

7. 10,000 = F x 4
F = 2500N