Phabulous Physics

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Mechanics

Constant Velocity

position

Change in position is speed and speed with direction is velocity. When put into a graph the slope of a position and time graph is the Velocity.

speed and how it relates

Speed is change in position over change in time. So change in position over change in time with a direction is velocity.

Examples

30M/S North 100mph south 9.8m/s down

What is velocity

Velocity is speed with direction.

Constant Acceleration

Velocity and how it relates

Change in velocity is what Accerleration is. If qualified into a velocity graph the slope will be the Acceleration

Examples of Acceleration

-A ball rolling down a hill -A 500M sprint -Airplane taking off

What is Acceleration

Accerleration is when the change in Velocity is greater than 0 on an object. Note: velocity can by 0 and it could still have acceleration

Dynamics (FORCES)

what are forces?

What kind

Forces come in contact and non-contact an example of non-contact include Gravity, electromagnetic,and nuclear forces. Contact includes basically everything else.

When they occur

All forces occur when two objects interact either through contact or non contact forces

Definition

A force is a push or a pull on an object

Newton's 3rd law

pairs

Forces always come in equal pairs, this is what the third law implies

What happens to objects

When a force is acting on an object the object applying the orce and the object which is being affected they push on eachother with an equal force

When it's prevelant

Whenever there is a force the third law is always in affect

What it is

A rule that the universe follows proposed by Isaac newton. The third rule talks about how forces push on objects

Mechanics Scientific process

What these represent

These are all ways to relate changes in position, time, velocit, and acceleration. When speaking of mechanics all of the ideas are ocnnected through fractions and slopes making it a system that is easy to understand.

for every statement

For every statements are a sentence representing speed of a situation, or better put a rate of change. This can be represented by the slope of a line on a graph or the speed of an objects's motion.

Equations such as the one above show relationships of Velocity, position, and time. They come in many forms and can be tailored to find any data missing.

Dyanmics Scientific process

Equations

Equations for balanced objects always add up to 0 in the X and Y directions. These represent how balanced forces when added up =0 b/c change in velocity is 0. when you have vectors at angles you can you SOH CAH TOA to find the seperate X and Y values of the forces. In unbalanced forces these add up to something that is either < or > 0 making them never = to 0. this means that the change in velocity is not 0.

Schemas

Schemas are a visual representation of objects and forces. Bubbles are objects and vectors are forces. If a vector is dotted it is a non-contact force.

Force diagrams

Force diagrams take the lines of schemas and simplifies it down to a single object so you can easily see what forces are acting on it.

Phabulous Physics

Cameron Burgess