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23 Cards in this Set
- Front
- Back
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a quantity that requires both magnitude and direction for a complete description
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vector quantity
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a quantity that is completely described by magnitude
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scalar quantity
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arrow indicating the magnitude of the vector quantity and representative of the magnitude and direction of the vector
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vector
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the diagonal of the rectangle described by two vectors
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resultant
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two vectors at a right angle to each other
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component vectors
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the process of determining the components of a vector
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resolution
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an object in forced into motion and made up of horizontal and vertical vector components
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projectile
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combined effects of vertical and horizontal components create what?
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the variety of curved paths that projectiles follow (resultant vector)
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the path traced by a projectile accelerating only in the vertical direction while moving at constant horizontal velocity
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parabola
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at what point does the vertical and horizontal component equal each other?
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at the top of the path where they both equal zero
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True or False: a projectile will rise to its maximum height in the same time it takes to fall from that height to the ground
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True
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a projectile traveling fast enough to fall around Earth rather than into it
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satellite
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any push or pull
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force
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the name given to the force that acts between materials that touch as they move past each other
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friction
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what is friction caused by?
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irregularities in the surfaces of the objects that are touching
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the property of a body to resist change
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inertia
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every object continues in a state of rest, or of motion in a straight line at constant speed, unless it is compelled to change that stae by forces exerted upon it
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Newtons first law, law of inertia
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the amount of inertia an object has depends on its ____?
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mass
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a quantity of matter in an object, a measure of the intertia that an object exhibits in response to any effort made to start it, stop it, or otherwise change its state of motion
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mass
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the force of gravity on an object
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weight
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unit of force, one of which is equal to slightly less than a quarter pound
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newton
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weight = ?
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mass X acceleration due to gravity
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the combination of all forces acting on an object
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net foce
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