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Physics 102 Introduction to Physics

Physics 102 Introduction to Physics. Dr. Rick Yaw. Quiz Question 1:. Are you here? Yes No Use your clicker to choose. Introduction. Website Syllabus Class Schedule Lab meetings? Demonstrations and Other stuff. Chapter 1 About Science. Scientific Measurements.

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Physics 102 Introduction to Physics

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  1. Physics 102Introduction to Physics Dr. Rick Yaw

  2. Quiz Question 1: Are you here? • Yes • No Use your clicker to choose.

  3. Introduction • Website • Syllabus • Class Schedule • Lab meetings? • Demonstrations and Other stuff

  4. Chapter 1About Science

  5. Scientific Measurements … or how good science is based on good measurements. Size of Earth Size of the Moon Distance to the Moon Distance to the Sun Size of the Sun … all calculated through accurate indirect measurements! Time – seconds (s) Length – centimeter (cm) Mass – grams (g)

  6. Quiz Question 2: What are 3 fundamental measurements? • Mass, gravity, and color. • Weight, velocity, and center of mass • Length, mass, and time • Acceleration, length, and force. Use your clicker to choose.

  7. Mathematics- The Language of Science • Physics establishes relationships between measured phenomena and allows us to predict behaviors of systems • Examples: • Mass vs. momentum • Kinetic energy vs. velocity • Force vs. acceleration (Force = mass x acceleration) F = m a

  8. Acceleration due to gravity in free-fall click here An observed relationship Velocity = acceleration x time If you somehow measure the acceleration due to gravity You always know what the velocity will be after a given amount of time.

  9. Scientific Methods • Recognize a question • Establish a hypothesis • Test the hypothesis (experiment) • Adjust the hypothesis (if needed) • Science vs. Technology When in doubt, remember Everything is Physics!!

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