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In scientific terms, when do you do work?
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In order for you to do work on an object, the object must move some _____________ as a result of your force.
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motion and forces 🌷

mfe chapter 4- work and machines

QuestionAnswer
In scientific terms, when do you do work? when the object moves in the same direction in which the force is exerted
In order for you to do work on an object, the object must move some _____________ as a result of your force. distance
The amount of work you do depends on both the amount of _____ you exert and the _________ the object moves force, distance
What formula do you use to determine the amount of work done on an object? work= force x distance
What is the SI unit of work? joule
What is the amount of work you do when you exert a force of 1 newton to move an object a distance of 1 meter? 1 joule
What is the rate at which work is done? power
T or F: You exert more power when you run up a flight of stair than when you walk up the stairs. true
What is the formula you use to calculate power? power= work/time
What is the longer way to write the formula for power? power= force x distance/time
What are the six basic kinds of simple machines? inclined plane, wedge, screw, lever, wheel and axle, and pulley
WSM: A simple machines that consists of a sloping surface connecting a lower elevation to a higher elevation inclined plane
The larger the incline, the less __________ you need to push or pull an object on an inclined plane. input force
WSM: a simple machines that consists of two inclined planes, giving it a thing end and thick end. wedge
T or F: In a wedge, the inclined plane itself moves. true
T or F: The longer and thinner a wedge is, the greater its mechanical advantage. true
WSM: a simple machine that consists of an inclined plane wrapped around a central cylinder. screw
A spiral inclined plane forms the __________ of a screw. threads
WSM: A simple machine consisting of a bar that rotates around a fixed point. lever
The fixed point that a lever pivots around is called the _____ fulcrum
What type of lever is a door, wheelbarrow, and bottle opener? second class
What type of lever is a seesaw, scissors, and pliers? first class
What type of lever is a baseball bat, shovel, and fishing pole? third class
WSM: A simple machine that consists of two connected rings or cylinders, one inside the other wheel and axle
WSM: a simple machine that consists of a rope and grooved wheel pulley
What is a machine that utilizes two or more simple machines? compound machines
Created by: maddiefranciscan
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