Calculating Work and Power

It takes 20 N of force to move a box a distance of 10 m. How much work is done on the box ?

• 200 J
• 20.0J
• 2 J
• 200 N

You apply a force of 18 N to a dresser and move it 3.0 m. How much work did you do on the dresser?

• 54 N
• 6.0 J
• 54 J
• 27 J

If a student uses 10 Newtons of Force to push a chair 5 meters, how much is work is being done?

• 2 Joules
• .5 Joules
• 50 Joules
• 20 Newtons

Which of the following IS NOT an example of work being done?

• Pushing a cart in a store
• Shooting a basketball
• A stand off in tug of war
• Running a mile

I do 132 Joules of work on a bookcase. If I apply a force of 6 Newtons, how far have I moved the bookcase?

• 810 meters
• 792 meters
• 22 meters
• 320 meters

units of force are

• netwons
• grams
• joules
• meters

A set of pulleys is used to lift a piano weighing 1,000 newtons.  The piano lifted 3 meters in 60 seconds  How much power is used?

• 16.67 watts
• 50 watts

How much power is used if a force of 35 newtons is used to push a box a distance of 10 meters in 5 seconds?

• 70 watts
• 1750 watts

What is the power of a kitchen blender if it can perform 3,750 joules of work in 15 seconds?

• 56, 250 watts
• 250 watts

1. A book weighing 1.0 newton is lifted 2 meters.  How much work was done?

• 2 J
• 0.5 J