Physics Flashcards
Change of position of an object in a specific span of time relative to an observer
Motion
When an event took place, measured in seconds and denoted by t
Time
How far an object has travelled, scalar
Total length travelled
Distance
How far an initial position to the final position, vector
Displacement
Distance >= displacement
True
Equal if goes back to original position
How fast an object is changing its position within a span of time, scalar
Speed
Rate of change in position with respect to a reference point, vector
Velocity
How an object changes its velocity per elapsed time; m/s²
Acceleration
Acceleration takes place only if:
- Magnitude of velocity of an object is changing.
- Direction of motion of an object is changing.
- Both the magnitude of velocity and direction of motion are changing.
A and v are the same direction
Positive acceleration, speeding up
A and v opposite directions
Negative acceleration, slowing down
Object is moving at constant v or not moving at all
Zero acceleration
An object for you might be not moving relative to another person
Motion is relative
Total rate of change of position of an object
Average velocity
The velocity of an object in an instant or in a very small time
Instantaneous velocity
