[M$^{-1/2}$ L$^{1/2}$ T$^{1}$ \Theta$^{2}$]

[M$^{1/2}$ L$^{-1/2}$ T$^{-1}$ \Theta$^{-2}$]

[M L$^{-3}$ \Theta$^{-2}$]

[M$^{1/2}$ L$^{-5/2}$ T$^{1}$]

$44.5\,m{s^{ - 2}}$

$4.448\,m{s^{ - 2}}$

$44.4\,m{s^{ - 2}}$

None of these

${10^5}{\rm{N\;}}{{\rm{m}}^{ - 2}}$

${10^4}{\rm{\;N\;}}{{\rm{m}}^{ - 2}}$

${10^6}{\rm{N\;}}{{\rm{m}}^{ - 2}}$

${10^7}{\rm{N\;}}{{\rm{m}}^{ - 2}}$

${\left( {9.8} \right)^2}\,\sec$

9.8 sec

$\sqrt {9.8} \,\sec$

$\frac{1}{{\sqrt {9.8} }}\,\sec$

$1.5 imes {10^7}kg$

$1.5 imes {10^{10}}kg$

$6.67 imes {10^{ - 11}}kg$

$6.67 imes {10^{ - 8}}\,kg$