What is the SI unit of force?

What is the SI unit of force?

• A. Joule
• B. Watt
• C. Pascal
• D. Newton (N)

Answer: (D)

In SI, the unit of force is the newton, defined as 1 newton = 1 kilogram × meter per second squared. This comes from Newton’s second law, F = m × a, so the unit of force naturally combines mass (kg) and acceleration (m/s²). For example, a 1 kg mass accelerated at 1 m/s² experiences a force of 1 N. The other units represent different quantities: joule is energy, watt is power, and pascal is pressure, not force.

In SI, the unit of force is the newton, defined as 1 newton = 1 kilogram × meter per second squared. This comes from Newton’s second law, F = m × a, so the unit of force naturally combines mass (kg) and acceleration (m/s²). For example, a 1 kg mass accelerated at 1 m/s² experiences a force of 1 N. The other units represent different quantities: joule is energy, watt is power, and pascal is pressure, not force.