Speed, distance and time
Thursday, November 09th, 2006
Distance travelled is equal to the speed times the time taken. So if you drive at an average speed of 30 mph for two and a half hours, you will travel 75 miles. There are three permutations of the formula,
- Distance = Speed x Time
- Time = Distance divided by Speed
- Speed = Distance divided by Time
The formula triangle is often used to help remember these relationships. Just put your finger over the letter you are trying to find, and the triangle tells you what calculation to do for the remaining two letters.
Suppose you want to know the time a journey will take. Cover up T and the triangle reveals D / S or distance divided by the speed you drive at as the required calculation.
