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Home > Maths I > Numbers and Money > Distance, speed and time

Maths I

Distance, speed and time

Calculating DISTANCE, given speed and time

Example

Iain walked from his parents' farm into town at a steady speed of 5km/h. The journey took 3 hours. How far did Iain walk?

 

In the first hour he walked 5km

After two hours he had walked 10km

After three hours he had walked 15km.

The equation, distance equals, speed multiplied by time, is represented in a triangle, with distance at the top top and speed and time underneath.

Distance = Speed x Time

Distance = 5 x 3

Distance = 15km

 

Now you can try this example.

Question

Shona cycles at an average speed of 8km/h. How far has she travelled if she cycles for 4 hours?

Answer
The equation, distance equals, speed multiplied by time, is represented in a triangle, with distance at the top top and speed and time underneath.

Distance = Speed x Time

Distance = 8 x 4

Distance = 32km

Shona has travelled 32km.

Watch

Police car.

Class Clips

Video clip showing how the police use distance/time calculations to catch out speeding drivers

Watch

A stunt accident being set up for an episode of Casualty.

Class Clips

Video clip about the use of maths, including ratio, in setting up a crash stunt for Casualty

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