During a large, multi-object collision that involves object c, the change in the momentum of object c is equal to

The change in the momentum of object C is equal to the net impulse exerted on it.

Explanation:

Newtons second law of motion states that, the rate of change of momentum is directly proportional to the applied force and takes place in the direction in which the force acts. Mathematically represented as;

Ft = m(v-u)   ..............equ1

momentum is the product of mass and velocity, and change in momentum is the product of mass and the change in velocity of the object.

Ft is the impulse exerted on a body

from equ 1 we can see that the change in momentum is equal to the impulse exerted.