Work

A force exerted over a distance to move an object is ______________________.

• power
• work
• momentum
• Watt

 Work done = Force x _________

• a. distance
• b. acceleration
• c. velocity
• d. speed

A 5000N block is lifted 10 m. How much work was done?

• 50000 J
• 5000 J
• 500 J
• 50 J

Which of the following is the best example of work being done. 

• doing homework
• lifting a box
• pushing a stationary box
• holding a box

Work divided by time equals...

• energy
• power

You do 90 joules of work in 30 seconds. How much power have you generated?

• 30 watts
• 3 watts
• 120 watts
• 270 watts

You move an 8-newton weight five meters in 4 seconds. How much power have you generated?

• 160 watts
• 10 watts
• 6.4 watts
• 17 watts

Which of the following would produce the most power?

• A mass of 10 kilograms lifted 10 meters in 10 seconds 
• A mass of 10 kilograms lifted 10 meters in 5 seconds
• A mass of 5 kilograms lifted 10 meters in 5 seconds
• A mass of 5 kilograms lifted 5 meters in 10 seconds

The unit of power is the...

• work
• watt

The picture shows sunlight shining on solar panels. 
Which statement best describes this energy source?

• Sunlight is a renewable energy source used to produce hydropower.
• Sunlight is a nonrenewable energy source used to produce nuclear power.
• Sunlight is a renewable energy source used to produce electricity.
• Sunlight is a nonrenewable energy source used to produce natural gas.