9Ic – Speed key words Flashcards
mean speed
The total distance something travels divided by the total time taken is the mean (or average) speed for a journey.
The total distance something travels divided by the total time taken is the mean (or average) speed for a journey.
mean speed
distance-time graph
A graph that shows how far and how fast something travels during a journey. Steeper lines on the graph show faster speeds.
A graph that shows how far and how fast something travels during a journey. Steeper lines on the graph show faster speeds.
distance-time graph
kilometres per hour (km/h)
Unit for speed when the distance is measured in kilometres and the time is measured in hours.
Unit for speed when the distance is measured in kilometres and the time is measured in hours.
kilometres per hour (km/h)
miles per hour (mph)
Unit for speed when the distance is measured in miles and the time is measured in hours.
Unit for speed when the distance is measured in miles and the time is measured in hours.
miles per hour (mph)
metres per second (m/s)
Unit for speed when the distance is measured in metres and the time is measured in seconds.
Unit for speed when the distance is measured in metres and the time is measured in seconds.
metres per second (m/s)
The speed of one object compared to another – both objects could be moving.
The speed of one object compared to another – both objects could be moving.
speed
How fast something is moving. Often measured in metres per second (m/s), miles per hour (mph) or kilometres per hour (km/h).
How fast something is moving. Often measured in metres per second (m/s), miles per hour (mph) or kilometres per hour (km/h).
speed
gradient
A way of describing the steepness of a line on a graph in numbers. It is calculated by taking the vertical distance between two points and dividing by the horizontal distance between the same two points.
A way of describing the steepness of a line on a graph in numbers. It is calculated by taking the vertical distance between two points and dividing by the horizontal distance between the same two points.
gradient
