Phys Sci - 1/7, 1/8 - Newton's Laws, Force, Simple Machines

I.  Newton's Laws and "Force" below. (watch to the 6:00 mark)

Answer these questions on the notes page you are given.

1. What is inertia and how is it measured? Give an example of objects with different inertia.

2. What are the two formulas for Force?  (They are really similar, with one small difference when gravity is involved.)  Write one example of a force calculation.

3. Explain "equal but opposite forces."  

Try these.  Show formula, work with units, answer with units.

Example) What is the "force of gravity" acting on a 100kg man?

Example) What is the acceleration of a 20kg object if a 1000N force is applied?

Example) What is the mass of an object if it accelerates at 5m/s^2 after a 250N force is applied?

II.  Begin working on the "Six Simple Machines" article and summary in Classroom.  DO NOT work on this outside of class.