3 Questions in Science need help !!! thanks?
-
A machine can make work easier by:
a) making work easier to do
b) changing the size of the force needed
c) changing the direction or distance of the force
d) all of the above -
How can a machine make work easier for you?
a) By decreasing the amount of work you do on an object
b) By changing the direction of your applied force
c) By increasing the work done by the machine
d) None of the above -
How is the work output of a machine calculated?
a) By measuring the input force
b) By calculating the output distance
c) By multiplying the output force by the output distance
d) By dividing the input force by the output force
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