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science run record

TermDefinition
position location of an object
motion a change in an objects position over time
frame of reference a group of objects from which a position or a motion is measured
speed how fast a position changes with time at any given moment
velocity the speed and direction of a moving object
acceleration a change in velocity with respect to time
momentum the mass of an object multiplied by its velocity
work the use of force to move an object a certain distance or change an object
energy the ability to preform work or change an object
potential energy energy stored in the position or structure of an object
kinetic energy the energy of a moving object
law of conservation of energy the theory that staes that energy may change form, but it cannot be created or destroyed
simple machine a machine that changes the direction, the distance or the strength of one force
effort the force applied to a machine
fulcrum the pivot point of a lever
compound machine a combination of two or more simple machines
efficiency the measure of how much useful work a machine puts out compared to the amount of work put into it.
Created by: 1252374298