Newton (unit)

The newton (symbol: N) is the International System of Units (SI) derived unit of force. It is named after Isaac Newton in recognition of his work on classical mechanics, specifically his second law of motion.

One newton is defined as the force required to accelerate a mass of one kilogram at a rate of one meter per second squared in the direction of the applied force. Expressed in base SI units, 1 N is equal to 1 kg⋅m/s².

Therefore, the newton is a measure of force that combines mass, length, and time. It is used extensively in physics and engineering for quantifying forces such as weight, thrust, tension, and friction.

Multiples of the newton, such as kilonewtons (kN), are commonly used for larger forces. The newton replaces older units of force, like the dyne, in scientific and engineering contexts where SI units are preferred.