There are two types of physical quantity first one is vector and other is scalar.
Vectors are those physical quantities that have both magnitude as well as direction. Scalars are that type of physical quantities having only magnitude.
Some of the examples of vector quantities are velocity, acceleration, force etc.
So, in order to be considered a vector, a quantity must include its magnitude as direction.
At 0.1m, the restoring force would be 25 Newtons. It would probably not be possible to stretch to 5 meters because that would cause a restoring force of 1250 Newtons.