Physics Voab

A branch of science that helps us understand the physical world we live in

Physics

Investigate the motions of electrons and rockets the energy in sand waves and electric circuits, and the structure of proton and of the universe.

Physicist

Probably not on test

To understand the physical world we live in

Goal of physics

1. State the problem

2. Gather informaiton

3. Form a hypotheisis

4. Test the hypotheis

5. Analyze Data

6. Draw Conclusions

7 a.) Hypothesis is supported

7 b.) Hypothesis is not supported

Scientific Method

-Observation: (Watching how things unfold in their natural state)

-Experiment: (Manipulating or applying a treatment to one are of what you are studying)

-Investigations(Collecting And Analyzing)

The three ways to test a hypothesis is:

Scientific law is a statement about what happens in nature and seems to be true all the time

Scientific theory is an explanation of things or events based on knowledge gained from many observations and investigations (NOT A GUESS)

Shorter version:

scientific law is a statement about what happens in nature whereas the theory is explanations of things or events based on knowledge.

Scientific Law vs Scientific Theory

The method of relating the units as algebraic quantities

Dimensional Analysis

*Probably won’t have to define on test

The digits in a number that carry meaningful contribution to is precision or accuracy

Significant Figures

*Probably won’t have to define on test

A objects position changing relative to something stationary

Motion

A scientific model where each object is under stand and is replaced with a single point

Particle Diagram

*Probably won’t have to define on test

The distance and direction from the origin point to an object

Position

The entire length of an objects path

Distance

Change in position

Displacement

A quantity that has both magnitude and direction

Ex: Displacement & Velocity

Vector

(Distance from starting point)

A quantity that is just a number without direction

Scalar

(Distance, Time, Temperature)

A graph that can be used to determine an object position relative to time

Position time graph

*Probably won’t have to define on test

The ratio of an objects change in position to the time interval in which the change occurred

Velocity

The speed and direction of an object at a particular instant

Instantaneous velocity

The absolute value of an objects velocity

Speed

Position

Is the length from an origin point to the objects locations

Distance

Entire length of an objects path