**The SI unit for force is the newton with the symbol N.** Some other SI units related to force are the meter for length, kilogram for mass and second for time.

The newton's strict definition is listed as the force that gives a mass of one kilogram an acceleration of one meter per second squared. This allows a person to calculate the force of an object regardless of its position in the universe, unlike weight which is dependent on the gravity of the planet where an object is located. The newton is named after Sir Isaac Newton for his work with classical mechanics.