Ch. 11 Flashcards
1
Q
Frame of reference
A
A system of objects that are not moving with respect to one another
2
Q
Relative motion
A
Movement
3
Q
Distance
A
The length of a path between two points
4
Q
Vector
A
Quantity that has magnitude and direction
5
Q
Speed
A
Ratio of distance an object moves compared to the amount of time
6
Q
Average speed
A
Total distance traveled divided by time it takes to go that distance
7
Q
Instantaneous speed
A
Rate at which an object is moving at a given moment in time
8
Q
Velocity
A
Speed and direction in which an object is moving
9
Q
Acceleration
A
Rate at which velocity changes
10
Q
Free fall
A
Movement toward earth only because of gravity
11
Q
Constant acceleration
A
Steady change in vocity
