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Details Title: nln study guide Description: Physics vocab Total Flash Cards: 24 Created: 09/25/2006 13:43:57	To study from this set of flash cards, or to create your own your own study flash cards, register HERE. If you are already a registered user, CLICK HERE.
Cards Term Momentum Definition An object traveling at a specific velocity has a qauntity. (all moving objects) Term Conservation of momentum Definition The total momentum of an isolated system is always constant. When two objects collide, they transfer energy, it is not lost Term Newton's First Law Definition Inertia, which states that objects in motion tend to stay in motion, and objects at rest tend to stay at rest. Resists any change in motion. Term Newton's Second Law Definition Describes the relationship between force, mass, and acceleration.States that the force applied on an object equals the mass of the object times the acceleration of the object.F=ma (force= mass * acceleration) Term Newton (N) Definition The unit that represents a force that accelerates a mass of 1 Kilogram 1meter per second. Term Joule Definition Is the unit of energy equal to the work done by a force of one newton acting over a distance of one meter. Term Friction Definition is the force that opposes the relative motion or tendency of such motion of two surfaces in contact. Term Gravity Definition the force of attraction between all masses in the universe Term Weight Definition is the force exerted upon an object by virtue of its position in a gravitational field Term Lever-arm Definition The distance from the axis of rotation to the point where the force is exerted Term Torque Definition the ability of a force that is applied perpendicularly to rotate an object around and axis, such as a ball on a string, Term Energy Definition Defined as the abilit to do work. Term Kinetic energy Definition energy associated with motion. Term Potential energy Definition is the stored energy that a body has because of its position. ex. when you lift an object up Term Work Definition defined as the product of the force applied to a object and the distance through which the force is applied. Term Power Definition is the rate at which work is done. Term inclined plane Definition a slanted surface used to raise an object. Term Wedge Definition a moving incined plane Term Screw Definition an inclined plane wrapped around a clinder Term Lever Definition A simple machine that is free to move around a fulcrum when force is applied. Term Pulley Definition A chain or rope wrapped around a wheel. Term Wheel and axel Definition a lever that rotates in a circle Term compound machine Definition a combination of two or more simple machines. Term Efficiency Definition is the work done divided by the energy used to power the machine, or the comparison of work input to work output.