Question

what is the reason that a stream cannot be cut

Answer 1

Matter is something which occupies space and posess mass.

Matter is made up of small invisible particles.

PARTILES of matter contains inter MOLECULAR space and

Inter MOLECULAR force of attraction.

Now in this case, water is a fluid form of matter which posses inter MOLECULAR force of attraction. Even though momentarily we can cut the flow of water by placing our hand or finger in between water steam but permanently we cannot cut the water stream as liquid particles are binded with inter MOLECULAR force of attraction.