Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
25 Cards in this Set
- Front
- Back
frame of reference |
system of objects that are not moving with respect to one another |
|
relative motion |
movement in relation to a frame of reference |
|
distance |
is graphed as responding variable |
|
displacement |
the direction and from the starting point and the length of a straight line from the starting point to the ending point (how far you are from starting point) |
|
vector |
a quantity that has magnitude and direction |
|
resultant vector |
points directly from the starting point to the ending point |
|
speed |
ratio of the distance a object moves to the amount of time and object moves |
|
average speed |
the total distance traveled divided by the time it takes to travel that distance |
|
instantaneous speed |
is the rate at which an object is moving at a given moment in time |
|
velocity |
a description of both speed and direction of motion |
|
acceleration |
the rate at which velocity changes |
|
free fall |
the movement of an object toward Earth solely because of gravity |
|
constant velocity |
like being on cruise control so speed doesn't change |
|
linear graph |
constant acceleration is represented by straight line |
|
nonlinear graph |
a curve connects the data points that are plotted |
|
when can speed be positive? |
north and east |
|
when can speed be negative? |
south and west |
|
what is vector addition? |
displacements being added
|
|
what does the slope of a speed-time graph tell? |
acceleration |
|
when can acceleration be positive? |
speeding up |
|
when do vectors add? |
displacements in the same direction
|
|
when can acceleration be negative? |
slowing down |
|
what does the slope of a distance-time graph tell you? |
velocity
|
|
when can acceleration change? |
going around a curve
|
|
when do vectors subtract? |
displacements going is opposite direction |