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Forces and Motion

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Term
Definition
Motion   Displacement of an object over a period of time  
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Speed   A measure of how fast something is moving  
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Force   A push or pull exerted on an object in order to change the motion of the object  
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Net Force   The combination of all of the forces acting on an object  
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Newton   the SI unit for force (symbol N)  
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Friction   A force that opposes the motion of an object  
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Gravity   The force of attraction between all matter  
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Mass   The measure of the amount of matter in a body  
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Weight   A measure of the gravitational force exerted on an object  
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Force   A push or pull  
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Velocity   The speed of an object in a particular motion  
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Acceleration   The rate at which velocity changes over time  
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Inertia   Property of matter that makes matter resist a change in motion  
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Kinetic Energy   Energy associated with moving bodies  
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Potential Energy   Stored energy that can be released  
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Mechanical Energy   The energy that is possessed by an object due to its motion or due to its position  
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Energy Conservation   Reducing energy consumption through using less of an energy service  
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Work   The product of a force and the distance through which it acts  
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Electrical Circuit   A closed loop through which charges can continuously move  
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Energy   The ability to do work  
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Inclined Plane   A simple machine that is a straight, slanted surface which facilitates the raising of loads  
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Pulley   A simple machine that consists of a wheel over which a rope, chain or wire passes  
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Lever   A simple machine that consists of a bar that pivots at a fixed point called a fulcrum  
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Wheel and Axel   A simple machine consisting of two circular objects of different sizes  
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Wedge   a simple machine that is made up of two inclined planes that move  
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Screw   A simple machine that consists of an inclined plane wrapped around a cylinder  
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Mechanical Advantage   A number that tells how many times a machine multiplies force  
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Mechanical Efficiency   A quantity, usually expressed as a percentage, that measures the ratio of work output to work input  
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Created by: Wattsr
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