Question

What is the SI unit of work power and energy?

Answer 1

Here are the SI units for work, power, and energy:

1. Work: The SI unit of work is the joule (J).
   

   - 1 joule is the work done when a force of 1 newton moves an object by 1 meter in the direction of the force.
   - Formula: \( \text{Work} = \text{Force} \times \text{Distance} \)
   - Unit: \( 1 \, \text{J} = 1 \, \text{N} \times 1 \, \text{m} \)

1. Power: The SI unit of power is the watt (W).
   

   - 1 watt is the rate at which 1 joule of work is done per second.
   - Formula: \( \text{Power} = \frac{\text{Work}}{\text{Time}} \)
   - Unit: \( 1 \, \text{W} = 1 \, \text{J/s} \)

1. Energy: The SI unit of energy is also the joule (J).
   

   - Energy is the capacity to do work, and it is measured in joules, the same unit as work.
   - Formula: \( \text{Energy} = \text{Power} \times \text{Time} \)

So, in short:

1. Work = Joule (J)
   

1. Power = Watt (W)
   

1. Energy = Joule (J)