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## Homework Statement

A 1.70 kg block rests on the icy surface of a frozen pond, which you can assume to be frictionless. If the location of the block is measured to a precision of 0.30 cm, what is the minimum uncertainty in the block's speed, assuming the mass is known exactly?

## Homework Equations

xp=h/4(3.14)

## The Attempt at a Solution

xp=h/4(3.14)

x(mv)=h/4(3.14)

I plugged in all the values and got v. The answer was wrong. I then multiplies by .0003 and that was also wrong.