1.A green and yellow dump truck are driving along the road. Each of the 5000 kg dump trucks are traveling at 10 m/s. a. What is the momentum of each truck? (don’t have to show all four steps but be sure to show step 4 and label each)

b. The green dump truck hits a bridge support. Its momentum goes to 0 kg m/s in .6 seconds. How much force acted on the truck?

c. The yellow dump truck hits a safety barrier that crumples. Its momentum goes to 0 kg m/s in .9 seconds. How much force acted on the truck?

Formulas= p=mv, I=FΔt, I=Δp, Δp=mvf-mvi

Apulley with a mechanical advantage of 5 will require you to pull times the amount of rope. a. 1/5 b. 5 c. 10 d. 15

Which of the following is not a characteristic of s waves? a. travel slower than p waves. b. cannot be detected in locations more than 105° from an earthquake’s epicenter. c. travel through solids and liquids. d. only affect coastal regions.

You are a sales representative for a company that makes a new alternate fuel for vehicles. you have prepared a presentation for the environmental engineers to sell your new product. what question do you expect the audience to ask regarding whether the new fuel will cause less damage to the environment? a. do we have to change any parts of the vehicle to use this alternate fuel? b. will the vehicles get better fuel mileage with the alternate fuel? c. how much greenhouse gas does your fuel produce compared with current fuel sources? d. is the alternate fuel more expensive than fossil fuel?