Work requires both force and movement in the direction of the force. The amount of work done can be calculated using the equation W=Fxd, where W is work in Joules, F is force in Newtons, and d is distance in meters. More work is required to lift a 100N potted plant 0.5m than a 50N potted plant the same distance. Examples are provided to calculate the work required to move a 250N car 5m (1250J) and lift a 63N book 3m (189J). Practice problems apply the equation to different scenarios requiring work.

1. Work
• Work is done on an object when the object
moves in the same direction in which the
force is exerted.
• If no motion occurs then there will be no
work.
• Did you do work with your book bag on
your back walking to class?

2. Calculating Work
• Work depends on two things:
1. Force
2. Distance
• Which would require more work:
1. Lifting a 50N potted plant .5 m off the
ground to a table or a 100N potted plant
the same distance.

3. Calculating Work
• We can find the work it takes to move
objects with the following equation.
W= Force (F) x Distance (d)
• The following unit is used for work:
• Joule (J)
Now, find how much work it would take to
move each of the plotted plants.

4. Calculating Work
How much work would it take to move a 250
N car a distance of 5m?
How much work would it take to lift a 63 N
book a distance of 3m?

5. Practice Problems
1. Calculate the work done on a wagon if
you push it 35m with a force of 53N.
2. Calculate how much force you would
need to pull a wagon if you applied 65 J of
work and pulled a distance of 25m.
3. Would you be doing work to a box if you
carried it to a moving truck? Explain.

6. Practice Problems
1. Calculate the work done on a wagon if
you push it 35m with a force of 53N.
2. Calculate how much force you would
need to pull a wagon if you applied 65 J of
work and pulled a distance of 25m.
3. Would you be doing work to a box if you
carried it to a moving truck? Explain.