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Gravity is a force which tries to pull two objects toward each other. Anything which has mass also has a gravitational pull. The more massive an object is, the stronger its gravitational pull is

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The speed of something going in it's given direction. An example is a bowling ball , someone rolls the ball at the speed they gave and hopefully they ball goes to their chosen direction.

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Friction is the resistance of motion when one object rubs against another. An example is pushing something against a rough floor.

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Pushing or pulling an object produces acceleration/speed , a change of speed. Such as pushing a car ,lawnmower , or something else.

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Newton's first law is known as the law of inertia. Which is basically stated that if a object is at rest it stays rest but if a object is in motion it does not stop unless it goes against a unbalanced force. An example is that

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The act of going , moving , or being moved. For example one ball hits the other then hits the other back and fourth .