Momentum · Andromeda

Definition

Momentum ( $p$ ) is a physical quantity describing an object’s inertia in motion, defined as the product of its mass and velocity: $p = mv$ .

It is conserved in all closed systems, governing collisions and propulsion.

Momentum ( $p$ ):
$p = mv$
How to read: “The momentum p is equal to the mass m times the velocity v.”
Meaning: Momentum combines how massive and how fast an object is moving.
A high-speed light object can have the same momentum as a low-speed heavy object.
Impulse-Momentum Relationship: The impulse exerted on an object is equal to the change in momentum it produces.
$Ft = \Delta(mv)$
How to read: “The force times the time interval is equal to the change in momentum.”
Meaning: Force over time changes momentum; this is the impulse-momentum theorem.