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Science, Physical

QuestionAnswer
the transfer of energy to an object by the application of a force that causes the object to move in the direction of the force work
a quantity that measures the rate at which work is done or energy is transformed power
a quantity that expresses how much a machine multiplies force or distance mechanical advantage
one of the six basic types of machines, which are the basis for all other forms of machines simple machine
a machine made of more than one simple machine compound machine
the capacity to do work energy
the energy that an object has bc of the position, shape, or condition of the object potential energy
the energy of an object due to the object's motion kinetic energy
the amount of work an object can do bc of the object's kinetic and potential energy mechanical energy
a quantity , usually expressed as a percentage, that measures the ratio of useful work output to work input efficiency
what is work measured in? joules
___ and ___ are the same thing force and weight
what is the equation for work? work = force x distance
What is power measured in? watts
what is the equation for power? power = work/time
what is one watt equal to? 1j/s
what is the equation for potential energy? PE = mass x 9.8 x height
how do you find height with the potential energy equation? height = PE / mass x 9.8
What is the equation for kinetic energy? KE = 1/2 mass x v^2
What is the equation for mechanical advantage? output force / input force = input distance / output distance
What is distance measured in? meters
what is mass measured in? kg
What is weight measured in? Newtons
what is height measured in? meters
What are some examples of a simple machine? pulley, lever, wheel & axle, simple inclined plane, screw, wedge
Energy cannot be... energy cannot be created or destroyed.
what is force measured in? newtons
Created by: brittney143
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