# AP Physics with Hansenator - Basic Physics, Kinematics, and Forces Review

Hello Everyone! I hope all is well and you enjoy the lesson. I've been absent, but will be around again soon!

# Physics Kinematics and Forces Review (What to Know Plus Examples)

### Physics Basics

- Scientific Notation

Non-zero numbers always count.

Zeros before numbers never count.

Zeros after a number count if there is a decimal point.

When multiplying/dividing keep least number of significant numbers.

When adding and subtracting keep the least precise decimal place. - Dimensional Analysis

Know how to convert feet to meters, meters per second to miles per hour, etc. - The Scientific Method

Introduction/Hypothesis

Experiment/Procedures/Materials

Data/Analysis

Conclusion

### Motion in 1-Dimension

- (distance = rate * time)
- (Average Velocity)

### Accelerated Motion

- (Average Acceleration)
- (Used to find distance when there is acceleration)
- (Used to find instantaneous velocity/speed at a certain time)
- (Used with an average velocity and no time)

### Forces in 1-Dimension

- Newton’s First Law: An object will remain at rest or in constant motion unless acted on by an outside force.
- Newton's Second Law: Force = Mass * Acceleration
- Newton's Third Law: For every action, there is an equal and opposite reaction.
- Free Body Diagrams and Equilibrium
- Review the blocks on a pulley problem!

### Forces in 2-Dimensions

- Know how to add vectors in rectangular <x,y> and polar coordinates <r,θ>
- This section is basically the same as 4, but with more concepts
- Know how to break vectors up into components (the x and y directions)

- Static Friction:

If static friction is greater than the force that causes movement, no movement occurs. - Kinetic Friction:

If the kinetic friction is greater than the force that causes movement, then the object will slow down.

### Motion in 2-Dimensions

- Same concepts as CH 3 with vectors
- Always break velocity up into x and y components dependent on θ
- Know velocity/acceleration in the x versus the y direction

#### All SteemitEducation Posts

###### Physics

Kinematics Video, Circular Motion Video, Forces in 1 & 2 Dimensions Videos, Kinematics Full Lesson, Circular Motion and Gravitation Full Lesson

###### Computer Science

###### SAT

Asymptotes, Composite Functions, Contest 1 - Area, Contest 1 – Winners and Solution, PEMDAS, Systems of Equations, Functions, Exponents, Contest 2 - More Functions, Contest 2 – Winners and Solution, Percents, The Interest Equation, All About Division, Contest 3 - Factoring, Contest 3 – Winners and Solution, Fractional and Negative Exponents, Basic Trig, Contest 4 - Math Vocab

###### General Math

Basics of Algebra, Trigonometry Video, Proof of Quadratic Formula, Factoring Video, Unions and Intersections, Surface Area of a Cylinder, Substitution Video, Combinatorics Basics

###### Graphing from Algebra to Calculus

Algebra 1, Algebra 2, Pre-Calculus, Calculus

###### Piloting Airplanes

Introduction, Preflight, Requirements, Instruments, Take-Offs and Landings, Why a Plane Can Fly, Reading the Runway, Maneuvers

###### Other

Engineering (Isometric) Drawing, Pressure & SCUBA Diving

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