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Science Chapter 5
Question | Answer |
---|---|
non-contact force | A force that acts at a distance. |
force | A push or pull that acts on an object. |
gravity | The force of attraction between any two objects. |
contact force | A force that requires two pieces of matter to touch. |
inertia | The tendency of an object to resist any change in motion. |
acceleration | The rate at which the speed or direction of motion of an object changes over time. |
friction | The force that results when two materials rub against each other or when their contact prevents sliding. |
Newton's first law of motion | An object will stay in uniform motion unless a net force acts on the object. |
Newton's second law of motion | The acceleration of an object is dependent upon two variables- the net force acting upon the object and the mass of the object. |
Newton's third law of motion | When one object exerts a force on a second object, the second object exerts a force on the first. Those forces are equal in strength and opposite in direction. |