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21 Cards in this Set
- Front
- Back
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Force |
Push or a pull
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Newton |
The strength of a force is 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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Unbalanced Forces
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Unbalanced forces acting on an object result in a netforce and cause a change in the object’s motion.
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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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The friction that acts on objects that are not moving.
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Sliding Friction
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Occurs when two solid surfaces slide over each other.
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Rolling Friction
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When an object rolls across a surface.
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Fluid Friction
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Occurs when a solid object moves through a fluid.
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Gravity
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Force that pulls objects toward each other.
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Weight
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The force of gravity on a person or object at the surface of a planet.
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Mass
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Mass is a measure of the amount of matter in an object.
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Inertia
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Tendency of an object to resist a change in motion.
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Momentum
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A characteristic of a moving object that is related to the mass and the velocity of the object.
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Satellite
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Any object that orbits another object inspace.
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Centripetal Force
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Any force that causes an object to move in a circular path.
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air resistance
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force caused by air
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newtons first law |
His first law states that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force. |
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newtons second law |
The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object. |
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newtons third law |
For every action, there is an equal and opposite reaction. The statement means that in every interaction, there is a pair of forces acting on the two interacting objects. The size of the forces on the first object equals the size of the force on the second object. |
