Inertia is the tendency to do nothing or stay still. Inertia is not a force unlike friction.
According to the first law of motion. Something in uniform motion will stay moving and something that isn't moving will stay UNLESS a force moves or stops it. Inertia is like the tendency to stay still or to resist forces.
When you place a book on the ground it stays, of course it does. Since the first law of motion says an object will stay still unless acted upon by a force. The book has a tendency to stay still. If you put a force on it, you know what happens. To review inertia is the tendency of an object to stay still.
According to the first law of motion. Something in uniform motion will stay moving and something that isn't moving will stay UNLESS a force moves or stops it. Inertia is like the tendency to stay still or to resist forces.
When you place a book on the ground it stays, of course it does. Since the first law of motion says an object will stay still unless acted upon by a force. The book has a tendency to stay still. If you put a force on it, you know what happens. To review inertia is the tendency of an object to stay still.
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