Answer:
D
Explanation:
momentum can be negative as it's a vector quantity. positive momentum indicates that the object is traveling in the positive direction as defined by the coordinate system. negative momentum indicates that the object is moving in the opposite direction (backwards). the momentum equation itself is p = mass x velocity.
and only if you consider velocity a a directed vector, can you have a negative momentum. this equation shows that the momentum is in the same direction as velocity.
so, the sign is only for the direction.
the force is the same (going with the absolute value). a negative momentum is not smaller than a positive momentum.