Which of the following is a unit for energy or work?

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Multiple Choice

Which of the following is a unit for energy or work?

Energy and work are measured in joules. A joule is defined as the energy transferred when a force of one newton moves an object one meter, so work equals force times distance. That makes joule the natural unit for both energy and work (1 J = 1 N·m). The other units are for different ideas: watt is energy transfer per time (power), newton is a unit of force, and pascal is a unit of pressure. So the joule is the correct unit for energy or work.

Energy and work are measured in joules. A joule is defined as the energy transferred when a force of one newton moves an object one meter, so work equals force times distance. That makes joule the natural unit for both energy and work (1 J = 1 N·m). The other units are for different ideas: watt is energy transfer per time (power), newton is a unit of force, and pascal is a unit of pressure. So the joule is the correct unit for energy or work.

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