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18 Cards in this Set
- Front
- Back
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forces that combine to form a net force of zero
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balanced force
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a force that is exerted only when objects are touching
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contact force
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an influence tending to change the motion of an object or produce motion in a stationary object
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force
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the combination of all the forces acting on an object
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net force
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an object at rest will stay at rest or an object in motion will stay in motion unless acted on by a force
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Newton's First Law of Motion
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a force exerted when objects are not touching
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noncontact force
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forces that combine to form a net force that is not zero
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unbalanced force
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a squeezing force applied to an object that can make an object shrink
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compression force
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force exerted by a material when it is stretched or compressed
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elastic force
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a contact force that opposes the movement between two surfaces in contact
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friction
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an attractive force between all objects that have mass
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gravity
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all objects are attracted to each other with a force that depends on their masses and the distance between the objects
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Law of Universal Gravitation
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a force exerted by an object perpendicular to the surface of the object
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normal force
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pulling force applied to an object that can make an object stretch
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tension force
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the gravitational force exerted on an object
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weight
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in circular motion a force that acts perpendicular to the direction of motion toward the center of the circle
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centripital force
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the acceleration of an object is equal to the net force divided by the object's mass
(F=M x A) |
Newton's Second Law of Motion
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for every action, there is an equal and opposite reaction
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Newton's Third Law of Motion
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