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Two runners after 5 seconds โ runner A is ahead. Same time, more distance = faster.
![8.2 Slow or Fast - Measurement of Time and Motion - [Teachoo] - Concepts](https://cdn.teachoo.com/test/ec9c130a-871e-4613-933a-66c1ff1756ff/image-two-runners-on-a-track-after-5-seconds-runner-a-is-ahead-having-covered-40-m-while-runner-b-covered-30-m-same-time-more-distanc.png)
Think of two runners in a race.
After 5 seconds, one runner is ahead of the other.
The one ahead has covered more distance in the same time.
So we say that runner is faster .
The measure of this is called speed .
After 5 seconds, one runner is ahead of the other.
The one ahead has covered more distance in the same time.
So we say that runner is faster .
The measure of this is called speed .
๐ Example 1
How do we decide which of two cyclists is faster?
We compare how far each one travels in the same time.
The one who covers more distance is faster.
We compare how far each one travels in the same time.
The one who covers more distance is faster.
๐ Example 2
How do we compare a cheetah and a horse if they run for different times?
We calculate speed: distance รท time for each.
Then we compare the two numbers.
We calculate speed: distance รท time for each.
Then we compare the two numbers.
