Work, Power & Energy Review for Unit Exam 2024

The unit of work is the ...

• joule
• kilogram

• Newton

• Watt

The unit of power is the...

• joule

• watt
• Newton

• kg x m/s

The more POWER you use to move an object, the more work you do. 

• True
• False

Power is the RATE at which work is done. 

• True
• False

When you compress a spring, and then release it, the spring converts this type of energy into kinetic energy.

• elastic potential

• chemical potential

• gravitational potential

• nuclear energy

A weightlifter lifts two 300 newton weights 1.5 meters off the ground. How much work has he done?

• 600 J 
• 660 J
• 900 J 
• 1200 J 

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

The SI Unit for Force

• Newton (N)
• Joule (J)
• Second (s)
• Watt (W)

The SI Unit for Velocity

• Newton (N)
• Joule (J)
• Second (s)
• Meters per Second (m/s)