NEWTON’S FIRST LAW OF MOTION PHYSICS Miss Nora Villanueva
Newton’s first law states… <ul><li>“ A body will continue in a state of rest or in a straight line of uniform motion unless acted on by an external force .” </li></ul><ul><li>This means that an object at rest will remain at rest unless acted upon by a outside force. </li></ul>
<ul><li>An object at rest will stay at rest, and an object in motion will stay in motion at constant velocity, unless acted upon by an unbalanced force. </li></ul>
“ Law of inertia” <ul><li>Newton´s first law is known as the law of inertia. </li></ul><ul><li>Inertia is the tendency of an object to resist changes in its velocity: whether in motion or motionless. </li></ul>
Example <ul><li>Once airborne, unless acted on by an unbalanced force (gravity and air – fluid friction), this ball would never stop! </li></ul><ul><li>Unless acted upon by an unbalanced force, this golf ball would sit on the tee forever. </li></ul>
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