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For this chapter….

For this chapter…. Your book uses the key terms IMPULSE and IMPACT. THEY ARE NOT THE SAME! IMPACT is a synonym for FORCE. I would rather you use FORCE, not IMPACT, so that you don’t confuse yourself…(just like we use “negative acceleration” rather than “deceleration.”

meryl
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For this chapter….

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  1. For this chapter…. • Your book uses the key terms IMPULSE and IMPACT. • THEY ARE NOT THE SAME! • IMPACT is a synonym for FORCE. I would rather you use FORCE, not IMPACT, so that you don’t confuse yourself…(just like we use “negative acceleration” rather than “deceleration.” • Make note of this on your HW now!

  2. Have you ever heard an older relative say that “They don’t make cars like they used to..old cars are made better…etc.?” In other words – “newer” cars crumple more easily when in an accident. What do YOU think? What’s safer – a car whose hood is designed to “crumple” in an accident, or one whose hood is not designed to crumple? • Car whose hood crumples • Car whose hood is designed not to crumple • Equally as safe/dangerous • Not quite sure

  3. Let’s watch and see… • http://www.youtube.com/watch?v=dkMCFcEkQ0w • Chevy Malibu vs. Bel Air Video

  4. Crash Test • With the people around you, discuss what you saw, particularly any differences/ similarities in the ways the 2 cars experienced the crash

  5. NOW---What do YOU think? What’s safer – a car whose hood is designed to “crumple” in an accident, or one whose hood is not designed to crumple? • Car whose hood crumples • Car whose hood is designed not to crumple • Equally as safe/dangerous • Not quite sure

  6. Why is that? • Brainstorm with the people around you why you think a crumple zone makes a car safer

  7. Why is that? • http://www.youtube.com/watch?v=zS_Gk7vjmOg • Volvo XC60: Crumple Zones

  8. Other safety features in an accident… • What are they, and what do they do?

  9. It is often said that the force of impact is what kills someone in a car accident. Do you think this is ALWAYS true? • Yes –this is always true • Maybe it is sometimes true – but there are other factors • Not quite sure

  10. Would you rather experience a car accident in a Smart Car or big SUV? (Going from 70 mph to 0 mph in a second) • Smart Car • SUV • It doesn’t matter – you’d be dead either way

  11. Let’s watch and see… • http://www.youtube.com/watch?v=ju6t-yyoU8s • Smart Car crash demo

  12. Would you rather experience a car accident in a Smart Car or big SUV? (Going from 70 mph to 0 mph in a second) • Smart Car • SUV • It doesn’t matter – you’d be dead either way

  13. Today’s Goals • Finish the POGIL you received • Check in at stop signs • We are stopping with 15 minutes left for an exit

  14. What is some kind of memory aid you have to help you remember “momentum?” • Brainstorm, then share!!

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