According to the law of conservation of momentum, which statement is true
about a system that has no external forces acting on it?
O
A. An increase in momentum before a collision must equal an
increase in momentum after the collision.
O
B. The sum of the momentums of all objects in the system is always
zero.
C. The total momentum of all objects in the system does not change.
D. The momentum of each object in the system remains the same
before and after a collision.