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How bad can it be?

How bad can it be?. Presentation at the Math and Science Summer Technology Institute Summer 2009 – Omaha Site. Learning Objective: To use a software call Logger Pro to determine the impact force during a collision. Mid America Transportation Center. Nebraska Engineering.

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How bad can it be?

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  1. How bad can it be? Presentation at the Math and Science Summer Technology Institute Summer 2009 – Omaha Site Learning Objective: To use a software call Logger Pro to determine the impact force during a collision. Mid America Transportation Center Nebraska Engineering

  2. Learning Objectives: • To use a software call Logger Pro to determine the impact force during a collision. • To introduce the biomechanical limits the body can withstand in a collision • To introduce the engineering in car and roadside designs that reduce the probability of a fatal impact

  3. What is the science behind the toy? • The center object will appear and disappear if you move the toy vertically quickly because it has more mass than the outer shell of the toy. Inertia – the resistance to change in motion of an object How do they design a car to overcome the passengers inertia?

  4. How does a force impact inertia? A force is any push or pull on an object. When a force is applied to an object, it can cause an object to accelerate. This is Newton’s Second Law. How are cars or roadsides designed to lesson the impact forces?

  5. How to use Logger Pro to determine a cars velocity Open logger pro Click on Insert Click on Movie Choose “” Movie from the desktop Play the movie Set the scale using the yellow ruler. Set the origin using the X/Y button with dot. Use the point plotter to track the location of the vehicle before and after the impact. Change the position vs time graph to a velocity vs time graph by clicking on the y axis labels. Use the slope finder “m” button to determine the slope of the velocity vs time graph, or the acceleration of the object.

  6. So how much can we take? These values taken from: (Euro NCAP) ASSESSMENT PROTOCOL AND BIOMECHANICAL LIMITS

  7. So where do we go from here? • Shopping for a safer car. • Improving Highway Safety

  8. Post Activity Questions • In you own words describe what is meant by inertia. • When riding in moving car, what safety device(s) are designed to overcome inertia? • Describe how we determined the car’s momentum in the video clip. • What was the force called that caused a change in momentum? • If your in a car travelling at 26 m/s (60 mph) and you weigh 100 kilograms, how much momentum do you have? • If your airbag slows you down in .1s,what force is applied to your body? How many “g’s” is this?

  9. How bad can it be? Presentation at the Math and Science Summer Technology Institute Summer 2009 – Omaha Site Learning Objective: To use a software call Logger Pro to determine the impact force during a collision. Mid America Transportation Center Nebraska Engineering

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