Do Now for 4/9/13

Open books to page E-4HW: Complete analysis

Extra credit and missing work due Wednesday

E73 Choosing a Safe Vehicle

• Today’s Target: I will be able to state what safety features I think a car should have and why I chose them over others.

• Introduce activity• Part A• Part B• Analysis 1 through 6

E73 Choosing a Safe Vehicle

• Write up activity• Working with a partner, brainstorm and write

down the first 10 things that come to mind when you hear the term “Car Accident”

• Share your lists• What measurements do you think scientists

and engineers find useful when studying car safety and accidents?

E73 Choosing a Safe Vehicle

• Read Introduction• Complete Part A– Answer Analysis Questions 1 and 2

• Complete Part B– Answer Analysis Questions 3 through 5

• Any work not completed in class is for homework.

Do Now for 4/10/13

• Take out E73• HW: Read and write up E74

E73 Choosing a Safe Vehicle

• Today’s Target: I will be able to state the benefits and trade-off of different car features.

• Check HW• Go over sheet 73.1• Analysis 1 through 5• Key Points• Read and write up E74

E73 Choosing a Safe Vehicle

• 1. Compare the features you listed in Step 2 to the features listed on Student Sheet 73.1. How are they:

• a. similar?• b. different?

E73 Choosing a Safe Vehicle

• 2. For each feature on Student Sheet 73.1 that you drew an “X” next to, explain why you decided it was less important.

E73 Choosing a Safe Vehicle

• What factors other than safety do people consider when buying a car?– People typically consider looks (color, style),

price, cargo size, how many passengers it can fit, and fuel economy. It is likely that some people will say the looks of the car are the most important feature, although some may feel the performance or price are the most important.

E73 Choosing a Safe Vehicle

• 4. Do you think car features can:• a. reduce damage, injuries, and fatalities in car

accidents? Explain.– Most students will think that such features as seat belts or

airbags reduce the effects of accidents by padding the impact.• b. prevent accidents? Explain.

– Most students think such features as brakes that function well or mirrors and visors that improve the driver’s ability to see can prevent accidents. Depending on the class discussion, others may also mention that less height can prevent rollovers and that better handling (or even greater acceleration) can help drivers avoid accidents.