# Applying the uncertainty principle to a moving bullet.

A bullet of mass 25gm is moving with a velocity of 400m/s. The speed is measured accurately up to 0.02%. Calculate the certainty with which the position of the bullet can be located.

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#### Solution Preview

We have to apply the uncertainty principle that is

"The exact position and momentum of a particle cannot be determined simultaneously with a desired accuracy"

Let's take dp for ...

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Interesting problem with an interesting solution, which explains each relevant steps.

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