Study of motion _______________________________________________________________________________________________________________________________________________________________________________________
4. Speed
There is more to motion than distance and displacement.
Questions such as, “How long does a foot race take?” and “What was the runner’s speed?” cannot be answered without an understanding of other concepts, such as speed or velocity.
When we compare the speed of two bodies in motion, we have to take into account two variables: the distance they travel and the time they take to do so.
What's the difference between two identical objects traveling at different speeds?
We know that the one moving faster (the one with the greater speed) will go farther than the one moving slower in the same amount of time.
Speed is the rate at which a body changes its position