What is an playground example on variable motion?

A playground example of variable motion can be observed on a swing. As a child swings back and forth, their speed changes: it's slowest at the highest points of the swing and fastest at the lowest point due to the effects of gravity. This variation in speed and direction illustrates how motion can be variable, depending on the position and forces acting on the swing. Additionally, if the child leans forward or backward, the motion further changes, demonstrating the complexity of variable motion in a playful context.