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A body of mass m is thrown vertically upward with speed 3 v_e , where v_e is the escape velocity of a body from earth surface. The final velocity of the body is

Options

  1. A0
  2. B2 v_e
  3. C3 v_e
  4. D2 v _ e

Correct answer

D. 2 v _ e

Step-by-step solution

- GMm R + 1 2 ~m ( 3 v _ e )^2=0+ 1 2 mv ^2, v = 2 v _ e

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