The First Law of Motion states that an object at rest will remain at rest and an object in motion will remain in motion at a constant velocity unless acted upon by an unbalanced force. It is also known as the Law of Inertia.
Here are some examples:
A skate boarder is riding down a steep hill. He hits a large rock and his skateboard stops moving. The rider flies off the skateboard and lands 20 meters in front of his board.
A punter must kick the football in order to get the football moving.
A communication satellite continues its orbit above Earth indefinitely.
Back to Newton's Laws