Speed =

1.   ?    distance × time
2.   ?    distance ÷ time
3.   ?    time ÷ distance
4.   ?    time - distance

The difference between speed and velocity is:

1.   ?    velocity is speed in a given direction
2.   ?    speed is velocity in a given direction
3.   ?    speed is the gradient of the velocity time graph
4.   ?    velocity is a more scientific word for speed.

The units for acceleration are

1.   ?    metres second
2.   ?    metres per second
3.   ?    metres per second squared
4.   ?    metres second squared

Acceleration =

1.   ?    speed ÷ time
2.   ?    time ÷ speed
3.   ?    time ÷ change in speed
4.   ?    change in speed ÷ time

Acceleration is:

1.   ?    the area under the distance time graph
2.   ?    the area under the velocity time graph
3.   ?    the gradient of the distance time graph
4.   ?    the gradient of the velocity time graph

Speed is:

1.   ?    the area under the distance time graph
2.   ?    the area under the velocity time graph
3.   ?    the gradient of the distance time graph
4.   ?    the gradient of the velocity time graph

Distance is:

1.   ?    the area under the distance time graph
2.   ?    the area under the velocity time graph
3.   ?    the gradient of the distance time graph
4.   ?    the gradient of the velocity time graph

A tachograph plots:

1.   ?    an acceleration-time graph
2.   ?    a speed time graph
3.   ?    a velocity time graph
4.   ?    a distance time graph

The gradient of a graph is

1.   ?    rise ÷ run
2.   ?    run ÷ rise
3.   ?    rise × run
4.   ?    run + rise

When working out acceleration from a gradient:

1.   ?    only a small rise and run are needed to ensure accuracy.
2.   ?    large rise and run are needed to ensure accuracy, but the units are not important.
3.   ?    large rise and run are needed to ensure accuracy, and the correct units are important.
4.   ?    the area and units are important