IPC Review-Work and Machines Multiple Choice Test

For work to occur, an object must

Which of these is the amount of work done in a certain amount of time?

_____________ increase applied force and/or change direction of force to make work easier.

Power is measured in ____________.

_________ is the number of times a machine multiplies the effort force.

Levers, pulley, screws, and inclined planes are all

A machine that does work with only one movement is a

____________ is a measure of how much of the work put into a machine is changed into useful output work by the machine.

______________ is force X distance.

In machines, some energy is changed to heat due to

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