Explanation
Using the formula, \text{v}^2=\text{u}^2+2\text{as}
(100)^2=(200)^2-2\text{a}\times\displaystyle\frac{10}{100}
2\text{a}\times\displaystyle\frac{10}{100}=(200)^2-(100)^2=300\times100
\text{a}=\displaystyle\frac{3\times10^5}{2}=15\times10^4\;\text{m/s}^2
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