The escape velocity of 10g body from the Earth is 11.2 km s^-1.  Ignoring air resistance, the escape velocity of 10kg of the iron ball from the Earth will be 

• A

  $0.0112{\mathrm{kms}}^{-1}$

• B

  $0.112{\mathrm{kms}}^{-1}$

• C

  $11.2{\mathrm{kms}}^{-1}$

• D

  $0.56{\mathrm{kms}}^{-1}$