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12 Cards in this Set
- Front
- Back
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types of forces |
push, pull, gravity, friction
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First Law of Motion |
an object in motion tends to stay in motion unless acted upon by an opposing force, or an object at rest tends to stay at rest unless acted upon by an opposing force |
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velocity |
the speed and direction of a moving object |
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reaction |
the force returned by a second force |
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acceleration |
a change in speed of an object |
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inertia |
the tendency of an object to stay in motion or at rest unless acted upon by an outside force |
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action |
when an object applies a force |
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unbalanced force |
when one force is greater than another |
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balanced force |
when all forces are the same size and all forces cancel each other out |
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Isaac Newton |
an amazing scientist who thought up the laws of motion and many other discoveries |
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Third Law of Motion |
every action has an equal and opposite reaction |
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Second Law of Motion |
accelerations produced when a force acts upon a mass, and the greater the mass of object, the greater force needed to accelerate it |
