Can Momentum Be Lost?

The momentum of an object will never change if it is left alone. If the 'm' value and the 'v' value remain the same, the momentum value will be constant. The momentum of an object, or set of objects (system), remains the same if it is left alone. Within such a system, momentum is said to be conserved.

Can momentum ever be lost?

That is, the momentum lost by object 1 is equal to the momentum gained by object 2. In most collisions between two objects, one object slows down and loses momentum while the other object speeds up and gains momentum. If object 1 loses 75 units of momentum, then object 2 gains 75 units of momentum.

Can momentum be lost to friction?

Momentum of the object that is lost is gained by the earth, speeding it up by a wee bit. Otherwise, if you don't consider the earth as part of the system, momentum is not conserved when friction or any external force is acting, rather, momentum is changed , per newtons 2nd law.