Review for Physics Flashcards
Motion
When an object moves away from a starting point
Uniform Motion
Something moving in a straight line and constant speed. Almost impossible
Scalar Quanties
Have no direction but show how much. (The mangunitude)
Vector Quantities
Show the distance and magnitude.
Vector quanties examples
Should be velocity and displacement and acceleration and weight
Positive directions
Up, right, north, east
Negative directions
Down, left, south, west.
Average speed
Can be used to replace uniform motion. Dont forget dfinal and dinital and tfinal and tinitial
How to get positive acceleration
Change in magnitude and direction are both positive. An object speeding up.
The change in magnitude and direction are both negative. An object is slowing down.
What is negative acceleration
Change in magnitude is negative and the direction is positive. An object is slowing down in a positive direction.
The change of magnitude is positive and the direction is negative. An object speeding up in the negative direction.
Graphing
Add a title
Unform Motion
Straight line
x axis
Independant
y axis
Responding
Distance Time Graphs
Shows how far an object has traveled in a given time. The slope is speed.
Speed Time Graphs
Show the speed of an object changing in time. Slope represents acceleration.
Upward slope in speed time graphs
Speed is increasing
Downward slope in speed time graphs
Speed is decreasing
Position time graphs
Uses displacement and time. Includes the direction. The slope is velosity.
What is the slope of a straight horizontal line?
0
Velosity Time Graphs
Uses velosity and time. The slope is acceleration.
Positive acceleration in a position time graph
Looks like a half upward D
Negative acceleration in a position time graph
Looks like half of the top of a D.
Positive acceleration in a velosity time graph
Half of an upward v.
Negative acceleration in a velosity time graph
Half of a downward v.
Force
Is a push or a pull on an object. N