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Physics of Race Cars Acceleration: Free Fall & Kinematic Equations

Explore the concepts of constant acceleration in physics, focusing on free fall and race cars. Learn how to derive kinematic equations for constant acceleration and understand examples like free fall experiments and Lingenfelter Corvette's acceleration performance. Discover the relationship between displacement, velocity, and acceleration, and solve problems using kinematic equations. Witness demonstrations, such as falling balls and the impact of air resistance, to enhance your understanding of these physics principles.

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Physics of Race Cars Acceleration: Free Fall & Kinematic Equations

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  1. Lingenfelter Corvette PHYS16 – Lecture 5 Free Fall and Race Cars: Constant Acceleration September 17, 2010 Too Good to be True??? http://Z06-corvette.com

  2. Agenda • Administration • Key Concepts – Physics 1D motion • Constant Acceleration

  3. Administration • Homework Assignments • Due Sunday, Written homework, Math Exam, & Ch. 3 Online homework

  4. Key Concepts: Physics 1D Motion • Displacement, Velocity, & Acceleration • Know the definitions of these terms • Know how they are related • Motion with Constant Acceleration • Solve for constant accel. get Kinematic Eqs. • Use the Kinematic Eqs. to solve problems • Free Fall • Race Car

  5. What is constant acceleration? • Examples of a ≠ constant? • Bee flying • Dust Particle in the wind • Acceleration = constant (0 or some #) • Velocity can be approximated as linear • How many of these things have a=const? • Trains • People • Planes • Cheetahs • Automobiles

  6. Derive Kinematic Equations for Constant Acceleration

  7. Last time X V A

  8. Derive Kinematic Equations

  9. Free Fall

  10. Free Fall – Using the Equations • Constant acceleration is due to gravity • Drop a ball from 3 m, how long does it take to hit the ground?

  11. Free Fall – What does it imply? • Demo: Falling Balls • Demo: Feather vs. Penny http://panda.unm.edu/demos

  12. Free Fall – What does it imply? • Acceleration of any size or mass object should be the same • Penny should fall at the same rate as feather • This isn’t true due to air resistance • In vacuum it is true!

  13. Race Cars

  14. Lingenfelter Corvette • Can it really do 0 to 60 mph in 1.97 s? • Let’s calculate some #’s to see if it is reasonable http://Z06-corvette.com

  15. Lingenfelter – 0 to 60 mph in 1.97 s

  16. Stock Car – 0 to 333. 2 mph in ¼ mile

  17. C6 Corvette – 0 to 60 mph in 4.2 s

  18. Is it true? • Stock Car – 220,000 miles/hr2 • Lingenfelter Corvette – 110,000 miles/hr2 • C6 Corvette – 51,000 miles/hr2 • Yes, let’s look at some data from youtube…

  19. Summary • Most physical objects experience constant acceleration • Use Kinematic equations of Motion to solve for problems with constant acceleration • Examples: Free Fall and Race Car

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