Here's why:
* Momentum is a measure of an object's mass in motion. It is calculated by multiplying the object's mass by its velocity: Momentum (p) = Mass (m) × Velocity (v)
* Velocity is a measure of how fast an object is moving and in what direction.
* If an object is at rest, its velocity is zero.
* Therefore, its momentum (p = m × 0) is also zero.
In summary, an object has no momentum if it is not moving.
