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Cards In This Set
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Speed
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Is a measure of how fast something is moving
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Instantaneous
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The speed at any instant
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Velocity
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Is speed at a given direction
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Acceleration
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The rate at which the velocity is changing
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Free Fall
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Gravity is the only thing affecting the object
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Vector
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An arrow that represents the magnitue of a quanity and the direction represents the direction of the quanity
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Vector Quanity
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A quantity in physics, such as force, that has both magnitude and direction
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Resultant
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The vector sum of two or more component vectors
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Pressure
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Fore per surface are where the force is normal to the surface
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Momentum
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The product of the mass and the velocity of an object. Has magnitude and direction. Also called linear momentum
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Impluse
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Product of force and time interval during which the forces act
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Law of conservation of momentum
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In the absence of a net external force, the momentum of an object or system of objects is uncharged.
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Work
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The product of the force on an object and the distance through which the object is moved
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Power
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Rate at which work is done or energy is transformed
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Energy
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That property of an object or a system which enables it to do work
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