Here's why:
* Resistance to change in motion is called inertia.
* Inertia is directly proportional to mass.
* Newton's Second Law of Motion states that force (F) equals mass (m) times acceleration (a): F = ma.
* Acceleration is the rate of change in velocity, measured in meters per second squared (m/s²).
* Force is measured in Newtons (N), which is equivalent to kg*m/s².
Therefore, combining the units of force and acceleration, we get:
Ns = kg * m/s² * s = kg * m/s
This unit, the Newton-second, represents the resistance to change in motion (inertia) of an object.
