1. Friction
1.1. the resistance that one surface or object encounters when moving over another.
1.2. F = Mn
1.2.1. Friction = (coefficient of friction)(normal force)
1.3. Friction
2. Resultants
2.1. The resultant is the vector sum of two or more vectors. It is the result of adding two or more vectors together.
2.2. Tail-to-Head method
2.2.1. More than 2 vectors
2.2.2. end of arrow-end of arrow
2.3. Parallelogram method
2.3.1. 2 vectors
2.3.2. end to end/ head to head
2.3.3. draw a parallelogram and connect the corners. Measure angle and length
3. Speed & Velocity
3.1. Speed and Velocity are very similar but speed is scalar and velocity is a vector
3.1.1. Velocity has a direction and a magnitude
3.1.2. Speed has only magnitude
3.2. Speed is to Velocity as Distance is to Displacement
4. Tension
4.1. Stretching Force
4.1.1. The tension force is the force that is transmitted through a string, rope, cable or wire when it is pulled tight by forces acting from opposite ends.
4.1.2. The tension force is directed along the length of the wire and pulls equally on the objects on the opposite ends of the wire.
4.2. Tension
5. Net Force
5.1. The combination of all forces acting on an object
5.2. The net force on an object changes its motion
5.3. Net Force
6. Force
7. Vector & Scalar
7.1. A vector is an arrow that represents the magnitude and direction of a quantity.
7.1.1. Magnitude = amount/length
7.1.2. To be a vector it must have both magnitude and direction.
7.1.3. Spacial Direction
7.1.4. Location doesn't matter with vectors
7.1.5. Examples of Vectors
7.1.5.1. Gravity
7.1.5.2. Force
7.1.5.3. Acceleration
7.1.5.4. Friction
7.1.5.5. (Magnetic) Fields
7.1.5.6. Displacement
7.1.5.7. Velocity
7.2. Scalar
7.2.1. a scalar quantity is a quantity that has magnitude only, but no direction
7.2.2. Examples of Scalars
7.2.2.1. Money
7.2.2.2. Food
7.2.2.3. Volume
7.2.2.4. Mass
7.2.2.5. Time
7.2.2.6. Counted Things
7.2.2.7. Energy
7.2.2.8. Temperature
7.2.2.9. Distance
7.2.2.10. Speed
7.3. Vector & Scalar
7.3.1. A vector is an arrow that represents the magnitude and direction of a quantity.
7.3.1.1. Magnitude = amount/length
7.3.1.2. To be a vector it must have both magnitude and direction.
7.3.1.3. Spacial Direction
7.3.1.4. Location doesn't matter with vectors
7.3.1.5. Examples of Vectors
7.3.1.5.1. Gravity
7.3.1.5.2. Force
7.3.1.5.3. Acceleration
7.3.1.5.4. Friction
7.3.1.5.5. (Magnetic) Fields
7.3.1.5.6. Displacement
7.3.1.5.7. Velocity
7.3.2. Scalar
7.3.2.1. a scalar quantity is a quantity that has magnitude only, but no direction
7.3.2.2. Examples of Scalars
7.3.2.2.1. Money
7.3.2.2.2. Food
7.3.2.2.3. Volume
7.3.2.2.4. Mass
7.3.2.2.5. Time
7.3.2.2.6. Counted Things
7.3.2.2.7. Energy
7.3.2.2.8. Temperature
7.3.2.2.9. Distance
7.3.2.2.10. Speed
8. Diagrams
8.1. Force Identification Diagram
8.2. A diagram showing all the forces acting on an object, the force's direction and its magnitude.
8.3. It is a simplification of the picture/problem that shows just the forces
8.4. Force Identification Diagram
8.5. Free Body Diagram
8.6. Free-body diagrams are diagrams used to show the relative magnitude and direction of all forces acting upon an object in a given situation.
8.7. Free Body Diagram
9. Force
9.1. Push/Pull
9.1.1. A force of some kind is always required to change the state of motion of an object.
9.2. Mass
9.2.1. Amount of stuff/matter in an object
9.3. Volume
9.3.1. How much space an object takes up
9.4. Density
9.4.1. Amount of mass in the volume of an object
9.4.2. Mass / Volume
9.5. Gravity
9.5.1. Pull of gravity on mass
10. Equilibrium
10.1. A state wherein no physical changes occur; it is a state of steadiness
10.2. Sum of F = 0
10.3. Dynamic Equilibrium
10.3.1. Constant Motion (no acceleration/deceleration)
10.4. Static Equilibrium
10.4.1. Not moving - no forces acting on it.
10.5. Greek Sigma "The sum of"
11. Torque
11.1. Twisting/Rotating Force
11.1.1. Torque is a measure of how much a force acting on an object causes that object to rotate.
11.1.2. Force X Distance
11.1.3. Tnet
11.2. Torque
12. Electrical
12.1. Electro-Motive-Force
12.1.1. Force that moves/pushes electrons
12.1.2. Vnet = IR
12.1.2.1. Volts = Resistance (ohm) Current (amps)
12.1.3. Watts = Power
12.1.4. Battery
12.1.5. Resistor
12.1.6. Switch
13. Science
13.1. Science is the process of observation to answer questions.
13.1.1. Study
13.1.2. Knowledge
13.1.3. Theories
13.1.4. Hypothesis
13.1.5. Experiment
13.1.6. Hypothesis
13.1.6.1. Theory
13.1.6.1.1. Cannot be proven WRONG
13.1.6.2. Law/Fact
13.1.6.2.1. are changeable
13.2. Scientific Method
13.2.1. Hypothesis
13.2.2. Experiment & Observe
13.2.2.1. 5 senses
13.2.3. Review
13.2.4. Conclude
13.3. Technology = Science
13.3.1. Technology amplifies senses
13.4. Art, Science & Religion set us apart from animals
13.5. Science = How
13.6. Science does not = Why
13.7. Religion = Why
13.8. Religion does not = How
14. Aristotle
14.1. Observations > Think > conclusion
14.2. Brilliant guy, but didn't do science
15. Newton's 1st Law
15.1. Newton's First Law states that an object will remain at rest or in uniform motion in a straight line unless acted upon by an external force.
15.1.1. "Law of Inertia"
15.1.2. Inertia
15.1.2.1. "object's laziness"
15.1.2.2. Object's ability to resist changes in its motion
15.2. Objects at rest stay at rest
15.3. Objects in motion stay in motion at a constant velocity
15.4. Unless acted upon by an outside force
15.5. Motion
15.5.1. Natural Motion
15.5.2. Natural motion
15.5.2.1. Earth, Water, Air, Fire & Aether
15.5.2.2. The vertical motion an object will do to get back to its "layer
15.5.2.3. No Force Required
15.5.3. Violent
15.5.3.1. Motion that removes an object from where it is "comfortable"
15.5.3.2. Force is required
15.5.4. Being at rest is ideal
16. Universe Models & Gallileo
16.1. Thinkers
16.1.1. Aristotle
16.1.2. Ptolemy
16.1.3. Geocentric - "Earth-Centered"
16.2. Scientists
16.2.1. Copernicus
16.2.2. Galileo
16.2.3. Heliocentric - "Sun-Centered"
16.3. Galileo
16.3.1. Proved the heliocentric model correct
16.3.2. Wrote, "Dialogue concerning the 2 chief world systems."
16.3.3. 1564-1642
16.3.4. Proved objects fall at the same rate
16.3.5. "Father of Modern Science"