Question

2.2.6 quiz: work and power
question 2 of 10
what are the si units for work?
a. calories
b. joules
c. watts
d. ergs

Explanation:

Work is calculated as force multiplied by displacement. In the International System of Units (SI), force is in newtons ($N$) and displacement in meters ($m$). Since $1\ J = 1\ N\times1\ m$, joules ($J$) are the SI units for work. Calories are a non - SI unit for energy (related to heat). Watts are the SI units for power ($P=\frac{W}{t}$, where $W$ is work and $t$ is time). Ergs are a unit of energy in the CGS (centimeter - gram - second) system.

Answer:

B. Joules