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17 Cards in this Set
- Front
- Back
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Weight:
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The force of gravity acting on an object
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Free Fall:
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The movement of an object toward Earth because of gravity
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Static Friction:
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A friction force that acts on an objects that are not moving
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Rolling Friction:
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A friction force that acts on rolling objects, caused by the change in shape at the point of rolling contact
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Sliding Friction:
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A friction force that opposes the motion of an object as it slides over a surface
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Fluid Friction:
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A friction force that opposes the motion of an object through fluid
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Newton:
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SI unit of force; Equal to the force that causes 1 kilogram mass to accelerate at a rate of 1 meter per second squared (1 N= kg*m/s^2)
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Newton's 1st law:
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If something isn't moving, it will not start moving by itself, and it will not stop unless so something pushes against it (Law of inertia)
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Newton's 2nd law:
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Things move farther and faster when pushed harder. These objects always move in the direction they are pushed unless something changes that direction. (Force=mass x acceleration)
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Newton's 3rd law:
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When an object is pushed in one direction. There is always a resistance of the same size in the opposite direction. (Action-Reaction)
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Net Force:
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Overall force acting on an object after all the forces are combined
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Air Resistance:
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Fluid friction acting on an object moving through air
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Terminal velocity:
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The constant velocity of a falling object when the force of air resistance equals force of gravity.
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Inertia:
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The Tendency of an object to resist a change in it's motion
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Balanced force:
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No change in the object position, net force is zero
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Unbalanced Force:
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The net force that will cause a change in the objects direction
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Force:
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Push or pull
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