Forces

1. What is normal force? What objects exert normal force

Table, ground, table

2. What is gravity, with regards to gravity, what do all things have in common

3. What is friction? Friction is exerted in the opposite direction of what?

4. What is applied force?

5. What are balanced forces? What are unbalanced forces? What is the unit for force? What do you do with forces in the same direction and forces in opposite directions?

Balanced Forces:
Unbalanced Forces:
Unit for Force: Newtons
Forces In Same Direction: Add

Forces In Different Direction: Subtract

6. What are two things that all vectors have?

Magnitude and

7. State Newton's Laws of Motion

8. What acceleration do all things fall with

9.8m/s

9. What are the units for each of the following?

Force: Newtons

Velocity/Speed: m/s

Position/Displacement/Distance:

Acceleration:

Energy:

Mass:

10. What is Newtons law of gravitation

11. What is weight and how does it change on different planets

12. What is Electric Force? Protons have what charge? Electrons have what charge?

Electric force is

Protons have a positive charge

Electrons have a negative charge

13. Opposite charges do what? Same charges do what?

Opposite charges attract

The same charges repel each other

14. Why does a balloon stick to the wall after you rub it on your head

15. What is magnetic force? Every magnet has what?
    
    
    
    

What is energy? What is the unit for energy? What is potential energy? What is kinetic energy?




17. What is the law of conservation of energy?






18. Know how to use formulas for kinetic energy and potential energy.