Law of conservation of momentum

1. Law of conservation of momentum

2. What is momentum?

In Newtonian mechanics, linear momentum, translational
momentum, or simply momentum (pl. momenta) is the
product of the mass and velocity of an object. It is
a vector quantity, possessing a magnitude and a
direction.
If m is an object's mass and v is its velocity (also a
vector quantity), then the object's momentum is:
P=mv

3. Law of conservation of momentum

The vector sum of the impulses of
bodies that make up a closed
system does not change over time
with any movements and
interactions of these bodies.

4. Who descovered that?

It was descovered at XVII centery by french
scientist Rene Descartes. He was the first to
introduce the concept of momentum and derive
the law.

5. law in life

The projectile and the gun are a closed
system in which the law of conservation
of momentum operates. As a result of
firing a gun, the momentum of the gun
itself and the momentum of the projectile
will change. But the sum of the pulses of
the gun and the projectile in it before the
shot will remain equal to the sum of the
pulses of the recoiling gun and the flying
projectile after the shot.