The mass of a body m moving with a velocity v is given by $m=\frac{m_0}{\sqrt{1-\frac{v^2}{c^2}}}$ where m₀ = rest mass, c = speed of  light = 3 x 10⁸ ms^-1. The value of m (in kg using significant figures) for $m_0=10\mathrm{kg},v=3\times {10}^7{\mathrm{ms}}^{-1}$is ________

$\text{m=}\frac{10}{\sqrt{1-\frac{9\times {10}^{14}}{9\times {10}^{16}}}}=\frac{10}{\sqrt{1-\frac{1}{100}}}=10.0504=10kg (significant figure is 1)$

(The number of significant figures in multiplication or division should equal to minimum number of decimal points of a quantity involved in the operation.)