A meteor of mass ' $m$ ' having a speed ' $v$ ' at infinity reaches the surface of the earth with a speed of ( $\mathrm{v}_{\mathrm{e}}$ is escape speed from the earth's surface)

• A

  $\sqrt{2} \mathrm{v}_{\mathrm{e}}$
• B

  $\mathrm{v}_{\mathrm{e}}$
• C

  $2 \sqrt{v^2+v_e^2}$
• Correct answer
  D

  $\sqrt{v^2+v_e^2}$

Hence, the correct answer is option: 'D'.