Heisenberg Uncertainty Principle and Kinetic Energy

[tatiana_eggs]

Homework Statement

18. A ball of mass 50 g moves with a speed of 30 m/s. If its
speed is measured to an accuracy of 0.1%, what is the
minimum uncertainty in its position?

19. A proton has a kinetic energy of 1.0 MeV. If its momentum
is measured with an uncertainty of 5.0%, what is
the minimum uncertainty in its position?

Homework Equations

\Deltap\Deltax \geq\frac{h}{4\pi}

The Attempt at a Solution

I know how to solve #19, because I know that \Deltap / p = uncertainty. But what about accuracy? Do they mean the same thing? How does accuracy relate to \Deltap or \Deltax or the uncertainty of one of those?

Thanks!

 

[nickjer]

I believe they mean the same thing with accuracy.