Chapter Nine, Lesson One: Work and Power Flashcards
1
Q
work
A
In scientific terms, you do work any time you exert a force on an object that causes the object to move some distance.
2
Q
joule
A
When force is measured in newtons and distance in meters, the SI unit of work is the newton-meter (N⋅m). This unit is also called a joule in honor of James Prescot Joule, a physicist who studied work in the mid-1800s.
3
Q
power
A
Power is the rate at which work is done.
4
Q
watt
A
One joule of work done in one second is one watt of power.
