Newton's Laws Of Motion

NEWTON’S LAWS OF MOTION

Newton’s Laws of Motion : Newton’s First Law :
Statement : "A body remains in a state of rest or of uniform motion unless acted uponby an external force (or unbalanced force)."

Explanation and significance :
Newton's first law is often referred to as the law of inertia.
Inertia is defined as the tendency of an object to remain at rest or move with a constant velocity Inertia is a fundamental property of all matter and is important to the definition of mass.
Mass is that quantity which is the measure of inertia. The more inertia that an object has, the more mass that it has.
To change the state of rest or state of uniform motion of a body, an external force is necessary.