How is momentum lost in real life?

[HoneyPancake]

Just a quick question about conceptual stuff.

How is momentum lost in real life? Is it because of friction or heat? Yet that only affects kinetic energy, which means that momentum should still be conserved. So, what else is there?

 

[PhanthomJay]

A momentum loss implies a change in momentum, down to a lower value. When a car is traveling at a certain speed on a road, and the driver applies the brakes and comes to a stop, does the momentum of the car change? Is momentum conserved? Why or why not? And wecome to PF!

 

[jgens]

If you choose the right reference frame, no momentum is ever "lost" in real life.