1. Physics 20
Dynamics Review

2. I can … Define Dynamics Define force as a vector quantity
Use Newton’s First Law
Use Newton’s Second Law (F=ma)
Use Newton’s Third Law
Use force due to gravity formula
Define Weight
F1 = -F2
Use Newton’s Law of Universal Gravitation
Understand the principle behind the Cavendish Experiment

3. I also can … Explain a gravitational field and why it is vector
Define a sphere of influence
Calculate gravitational field strength
Relate gravitational field strength to weight
Calculate weight on different planets
Calculate true vs. Apparent weight
Define Normal force and how it relates to gravitational force
Understand that there is a force of friction that resists motion
Calculate the force of friction

4. Wow this is a lot, but I also can …
Calculate forces (friction, gravity and normal) on an inclined plane (uses trig rules)
Define Elastic force
Calculate elastic force using distortion and the spring constant.

5. Assignment
Pearson Physics Pg
Pearson Physics Pg 231