Which statement is true about the unit for work?

Which statement is true about the unit for work?

• A. The SI unit for work is Newton
• B. The SI unit for work is Joule
• C. The SI unit for work is Watt
• D. The SI unit for work is Pascal

Answer: (B)

Work is the transfer of energy when a force acts over a distance in the direction of the force. In SI units, force is measured in newtons and distance in meters, giving work a unit of newton-meters. A joule is defined as one newton-meter, so the SI unit for work is the joule. The other units represent different quantities: newton for force, watt for power (rate of doing work), and pascal for pressure.

Work is the transfer of energy when a force acts over a distance in the direction of the force. In SI units, force is measured in newtons and distance in meters, giving work a unit of newton-meters. A joule is defined as one newton-meter, so the SI unit for work is the joule. The other units represent different quantities: newton for force, watt for power (rate of doing work), and pascal for pressure.