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Weight+Energy+Power

QuestionAnswer
the rate at which work is done ( work / time ) power
SI unit for power Watts
the Non-SI unit for power horsepower
the ability to do work Energy
energy transferred to/by an object to cause displacement Work
SI unit for energy and work Joules
the amount of matter an object has mass
the SI unit for weight and force Newtons (N)
SI unit for mass kilograms (kg)
relationship between power and time inversely proportional
relationship between power and work directly proportional
anything that can cause object to accelerate or be displaced Force (F)
energy based on mass and position (height) potential energy (PE)
energy based on mass and velocity kinetic energy (KE)
energy that is constant ; sum of PE and KE mechanical energy (ME)
this is true of energy halfway down for falling objects PE = KE
work output / work input x 100% work efficiency formula
amount of work done if object is not displaced O Joules
work formula if on a level surface W = F x d
work formula if on an inclined plane W = F x cos(angle) x d
states that mass is not created or destroyed ; only transfers forms law of conservation of energy
law of conservation of energy only applies to this system type closed system
the law of conservation of momentum can also be described as this law 1st law of thermodynamics
this is true of energy at the top for falling objects 100% PE & 0% KE
this is true of energy at the bottom for falling objects 100% KE & 0% PE
Created by: cadetjt
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