Question

Which objects move on their own and why?

Answer 1

Answer:

Living things do. Things already in motion remain in motion - like planets, asteroids etc. Then there are things that have potential to move, like rocks or snow on a mountain - avalanches etc. And tides, winds, ocean currents, mountain streams.

Explanation:

Because force can make things move, change shape or change their speed. Some forces are direct and happen when two things touch (like a foot kicking a ball) or over a distance (such as a magnet or gravity). Friction is the force between two objects in contact with each other that will resist an attempt to move them.