Chapter 4.1-4.3 Flashcards
1
Q
work
A
the transfer of energy to an object by using a force that causes the object to over in the direction of the force
2
Q
joule
A
unit used to express energy
3
Q
power
A
the rate at which work is done or energy is transformed
4
Q
watt
A
unit used to express power
5
Q
machine
A
a device that helps do work either overcoming a force or changing the direction of the applied force
6
Q
work input
A
work that you do on a machine
7
Q
work output
A
the work done on a machine
8
Q
mechanical advantage
A
a number that tells how many times a machine multiplies force
