Phys16 lecture 5
This presentation is the property of its rightful owner.
Sponsored Links
1 / 19

PHYS16 – Lecture 5 PowerPoint PPT Presentation


  • 37 Views
  • Uploaded on
  • Presentation posted in: General

Lingenfelter Corvette. PHYS16 – Lecture 5. Free Fall and Race Cars: Constant Acceleration September 17, 2010. Too Good to be True???. http://Z06-corvette.com. Agenda. Administration Key Concepts – Physics 1D motion Constant Acceleration. Administration. Homework Assignments

Download Presentation

PHYS16 – Lecture 5

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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Phys16 lecture 5

Lingenfelter Corvette

PHYS16 – Lecture 5

Free Fall and Race Cars: Constant Acceleration

September 17, 2010

Too Good to be True???

http://Z06-corvette.com


Agenda

Agenda

  • Administration

  • Key Concepts – Physics 1D motion

  • Constant Acceleration


Administration

Administration

  • Homework Assignments

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


Key concepts physics 1d motion

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


What is constant acceleration

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


Derive kinematic equations for constant acceleration

Derive Kinematic Equations for Constant Acceleration


Last time

Last time

X

V

A


Derive kinematic equations

Derive Kinematic Equations


Free fall

Free Fall


Free fall using the equations

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?


Free fall what does it imply

Free Fall – What does it imply?

  • Demo: Falling Balls

  • Demo: Feather vs. Penny

http://panda.unm.edu/demos


Free fall what does it imply1

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!


Race cars

Race Cars


Lingenfelter corvette

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


Lingenfelter 0 to 60 mph in 1 97 s

Lingenfelter – 0 to 60 mph in 1.97 s


Stock car 0 to 333 2 mph in mile

Stock Car – 0 to 333. 2 mph in ¼ mile


C6 corvette 0 to 60 mph in 4 2 s

C6 Corvette – 0 to 60 mph in 4.2 s


Is it true

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…


Summary

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


  • Login