Went over homework on math skills.
Introductory lecture on linear motion
Intro
Definition:
distance
speed
average speed
instantaneous speed
displacement
rate
average velocity
instantaneous velocity
Showed example of difference between a rate (hourly wage) and the rate of a rate (the rate at which your hourly wage increases). Used this to distinguish between velocity and acceleration.
Did examples to calculate acceleration.
Example of riding in my car to show that you can "feel" acceleration (because of inertia) even though you cannot feel constant velocity.
Used g = 10 m/s/s near the surface of the Earth to calculate how fast a dropped object is falling after a time t.
Showed picket fence lab and measured the acceleration of gravity in the classroom as g = 9.799 m/s/s
Wednesday, February 23, 2011
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