Physics

Problem

A singly charged ion of mass

4.5\times10^{-26}\,\text{kg}

enters a region with an initial speed of

2.0\times10^{5}\,\text{m}\,\text{s}^{-1}

and is accelerated to a final speed of

8.0\times10^{5}\,\text{m}\,\text{s}^{-1}

. What potential difference is required to accomplish this acceleration? a)

9.0\times10^{4}\,\text{V}

8.4\times10^{4}\,\text{V}

1.7\times10^{5}\,\text{V}

5.1\times10^{4}\,\text{V}