Distance is how far one thing is from another thing. Distance is a measure of the space between two things. It can be measured along any path. Thus, someone who goes around in a circle has traveled a distance even though his position has not changed.
Distance is different from displacement. Displacement is a vector that measures distance with a straight line and in only one path. Displacement is the shortest way to travel the distance.
- One ball is 5 feet from another ball. The distance between the two balls is 5 feet.
- John walks at a speed of 6 kilometres per hour for one hour. John walks a distance of 6 kilometres.
- A circle is a curved line. Each point on the circle is the same distance from the centre of the circle.