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22 Cards in this Set
- Front
- Back
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force
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a push or pull
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newton
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the strength of a force measured in the SI unit
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net force
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the combination of all forces acting on an object
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Unbalance force
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can cause an object to stop moving start moving or change direction
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balanced forces
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equal forces acting on one object in opposite directions
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friction
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the force that two surfaces exert on each other when they rub against each other
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static friction.
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Friction that acts on oblects that are not moving
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sliding friction
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when two solid forces slid over each other
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Fluid friction
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when a solid object moved through a liquid
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gravity
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a force that pulls an object toward each other
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Mass
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a measure of the amount of matter in an object
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weight
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the force of gravity on an object or person at the surface of a planet
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free fall
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when the only force acting on an oblect is gravity
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air resistance
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objects falling through the aue experience a type of fluid
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terminal velocity
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the greatest velocity of a falling object
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projectile
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an object that is thrown
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Inertia
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the tendency to resist a change in motion
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momentum
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is a characteristic of a moving object related to mass
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Law of Concervation of Momentum
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in the absence of outside forces the total momentum of objects that interact does not change
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satellite
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any oblect that orbits another object
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centripetal force
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any force that cause an object to move in a particular path
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rolling friction
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when an object rolls across a surface
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