Newton's First Law of Motion

Newton’s First Law of Motion

Objects will remain at rest, or move with a constant velocity unless acted on by a resultant force.

This means if the resultant force acting on an object is zero:

• The object will remain stationary if it was stationary before.
• The object will continue to move at the same velocity if it was moving.

When the resultant force is not zero:

• The speed of the object can change.
• The direction of the object can change.