Answer: The type of force that can decrease the total momentum of this system is frictional force.
What is frictional force?
Frictional force is the force created when two surfaces come into contact with each other and slide against each other.
The frictional force is defined as the force created when two surfaces slide against each other.
Because frictional force occurs when two surfaces come into contact with each other, it is referred to as a contact force.
Friction can be classified into four types: static, sliding, rolling, and fluid friction. Solid surfaces experience static, sliding, and rolling friction.
The strongest friction is static friction, followed by sliding friction and finally rolling friction, which is the weakest. Fluid friction occurs in liquids or gases that are fluids.
Frictional force is a type of force that can reduce the total momentum of this system.