Hi dear,
The principle states hat the position and the velocity of an object cannot both be measured exactly, at the same time (simultaneously). The very concepts of exact position and exact velocity together, in fact, have no meaning in nature.

Hope it helps.

Hello

The Heisenberg uncertainty principle is a physical law that forms part of quantum mechanics. It says that the more precisely you measure the position of a particle, the less precisely you can know it's motion (momentum or velocity).

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Hello!!

The Heisenberg uncertainty principle statesthat it is impossible to know simultaneously the exact position and momentum of a particle. That is, the more exactly the position is determined, the less known the momentum, and vice versa.

Thanks.