Work and Power

Maroon - Work and Power POGIL

Model 1 – WORK

With your group, read about WORK on pages 412-414. As you read, look carefully at figures 1
and 2 and read their captions. Complete the following table:

Figure Direction of Force Direction of Motion Is Work Done?
1
2A
2B
2C

1. From the reading discuss and define the following terms:
Work -

Joule -

The formula used to calculate work -

2. Draw and explain a scenario for each of the following situations:

Work being done. No work as a result of a force and No work as a result of motion that

no motion. does not act in the direction of the

force.

Model 2 – POWER

With your group, read about POWER on pages 414-416. From the reading define the following
terms:

Power -

Watt -

Horsepower -

The formula used to calculate power -

3. Compare 2 situations where the same amount of work is done in different amounts of time
and identify which one uses more power.

Model 3 – Calculating Work & POWER

Work = Force x distance Power = Work ÷ time

W=Fxd P =W ÷t

In the diagram below, several forces are acting on the box as it moves 5 m to the right in a
time of 10 s.

force #2:
2N

force #1:
8N

force #3:
2N

a. Calculate the amount of work done by each of the forces shown in the diagram. Include
correct units!

work done by force #1 work done by force #2
work done by force #3

b. Calculate the power of each force shown in the diagram. Include the correct units!

power of force #1 power of force #2

power of force #3

Check your answers with Answer Key provided by teacher.