1. A force can set an object in motion; stop its motion or change the speed and 2. The tendency of an object to stay at rest or in motion is acceleration 3. Objects in constant motion will remain in constant velocity as direction changes. 4. Weight is a measure of the force of gravity. 5. Forces always come in pair. 6. In Newton's law of interaction, interacting forces act on the same body. 7. Acceleration is directly proportional to the mass of the object. 8. An object with less mass has great inertia 9. The force gravity, normal force, friction, and tension are all contact forces. 10. One newton is equal to one kilogram-metre per second.
