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Unit 2 lesson 1,2,3

QuestionAnswer
Work is the use of force to move an object some distance in the same direction of the force
energy Is the ability to work.
power is the rate at which work is done
kinetic energy is the energy of motion
potential energy is the energy of an object has because because of its position,condition, and chemical composition
mechanical energy is the energy possessed by an object due to its motion andposition
Machine is a device that helps people get work done that changes the way work is done
mechanical advantage is the number of times the machine multiplies the input force
mechanical effciency is a comparison of a machine's work output with the work inut
lever is a simple machine that has a bar that pivots at a fixed point
fulcrum The fixed point
wheel and axle is a simple machine that has a wheel connected to a smaller cylindrical objects, the axle
pully is a simple machine that has a grooved wheel that holds up by a rope or a cable
inclined plane is a simple machine a=that has a straight, slanted surface
Created by: 18goserm0328
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