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Unit 5 Work Energy

Quiz on Thursday 1/7/16

WORK The amount of force applied over a displacement (W = Fxd)
POWER The amount of work done over a period of time (P = W/t)
JOULES (J) Units of Work and Energy
WATTS (W) Unit of Power
MECHANICAL EFFICIENCY Measures the effectiveness of a machine. Ratio of output work to input work (%e = (Output Work / Input work) x 100)
ENERGY The ability to do work or cause change
MECHANICAL ENERGY Sum of Potential and Kinetic Energy of an object (ME = KE + PE)
CHEMICAL ENERGY Energy stored in chemical bonds of compounds
KINETIC ENERGY Energy of motion (KE = 1/2mv^2)
GRAVITATIONAL POTENTIAL ENERGY Amount of stored energy in an object based on height above the ground. (GPE = mgh)
LAW OF CONSERVATION OF ENERGY States that energy cannot be created or destroyed, it only changes form
HORSEPOWER Equal to 746 watts
Created by: a.weis