Speed Flashcards
1
Q
What is speed?
A
A measure of how much distance is travelled per unit of time, measured in meters per second (m/s).
2
Q
What is average speed?
A
The overall distance travelled divided by overall time for a journey.
3
Q
What is acceleration?
A
How quickly speed increases.
4
Q
What is deceleration?
A
How quickly speed decreases.
5
Q
What is relative motion?
A
Different observers judge speeds differently if they are in motion too, so an object’s speed is relative to the observer’s speed.
6
Q
What is a distance-time graph?
A
A graph with distance on the y-axis and time on the x-axis that tells a story of a journey.
