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22 Cards in this Set
- Front
- Back
kinematics
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the branch of mechanics that describes how things move
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inertia
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the property of matter that causes objects to resist change in the state of motion
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displacement
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a change in position of an object
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weight
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the measure of the force of gravity on an object
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scalar
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quantities that express magnitude only
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terminal velocity
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the limit of the velocity at which an object can fall through a gas or a liquid
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action-at-a-distance forces
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forces that act on an object without touching it
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vectors
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quanitities that express magnitude and direction
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speed
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the rate at which an object changes position
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mechanics
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the study of motion
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magnitude
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as a part of velocity which describes size and direction
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average speed
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distance divided by time equals speed or velocity
V = d/t |
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acceleration
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the rate at which velocity increases in a given amount of time
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frame of reference
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A system of reference points from which the position and motion of an object can be determined
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action-reaction principle
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Newton's third law of motion- For every action there is an equal and opposite reaction
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geostationary orbit
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when a satellite orbits at the same period as the surface of the earth below
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dynamics
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the branch of mechanics that describes why things
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velocity (V)
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the rate at which an object changes position in a specified direction
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Universal Law of Gravitation
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gravitational forces are directly related to the mass of an object
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satellites
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celestial bodies in orbit around another celestial body
either natural or manmade |
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gravity (g)
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the attraction that any object in the universe has toward other objects in the universe
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newton (N)
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the metric unit of weight
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