1 / 7

What does more damage: when you hit and stop, or hit and bounce?

Explore the concept of impulse and its relation to momentum through the comparison of hitting a brick wall vs. hitting a pile of hay. Understand why hitting the wall causes more damage due to the difference in time. Solve practice problems and learn the definition of impulse.

watchison
Download Presentation

What does more damage: when you hit and stop, or hit and bounce?

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. What does more damage: when you hit and stop, or hit and bounce?

  2. Impulse Impulse is another piece to the idea of momentum. Which does more damage? Hitting a brick wall or hitting a pile of hay?

  3. Impulse Impulse is another piece to the idea of momentum. Which does more damage? Hitting a brick wall or hitting a pile of hay? Hitting the wall of course! Why? Because it happens faster. Time is the difference and we call this impulse

  4. Impulse formula I = F x t I = impulse F = force t = time

  5. Grab a textbook and open to page 93. Read from page 93 to the top of page 96, answering the questions below as you go. Put this page into your notes for Impulse. Then do problems 1-8 pg106 (one step calculations) on your own paper plus the 9 questions below 1.What is impulse and how is it related to momentum? 2.How does momentum change if we use more force over longer time? 3.How do airbags keep you safe in a crash? 4.Similarly, why does rolling from a jump keep you from getting hurt if you jump from up high? 5. How does a karate chop breaking bricks relate to impulse? Impulse Reading

  6. Question What is the definition of impulse?

  7. Momentum and Impulse Practice 6) What is the momentum of an 8 kg bowling ball rolling at 2 m/s? 7) Does the bowling ball have more momentum or less momentum than a 800 kg truck rolling at 0.2 m/s? Show the momentum for both. 8) What is the impulse when a wrecking ball hits a wall with 700 N of force over 1 second? 9) How will the force in the above problem change if the wrecking ball smashes through the wall in half the time? • Impulse can be expressed in two ways: (I = F•t) or (I = Δp). Show that both of these equations give the same units for impulse. • Use the new equation above to solve: How much impulse stops a 50- kg carton sliding at 4 m/s when it hits a wall?

More Related