HARD, SOFT AND MIXED MAGNITUDES

A magnitude is the property of beings that can be measured. The hard magnitude is one that resists change. For example: length, mass, inertia, gravity, etc. The soft magnitude is one that puts little resistance to change. For example: time, temperature, acceleration, etc. Mixed magnitudes are those that are composed of a hard and a soft magnitude. For example: speed, force, etc.

Time is a soft magnitude because it increases continuously in value. The temperature is a soft magnitude because it can increase or decrease in value. Acceleration is the increase or decrease of speed.

Formulas
Force of gravity: F = G (m1.m2 / d∧2)
Speed: S = d / t
Force: F = ma

Elvis Sibilia