The escape velocity for a body projected vertically upwards from the surface of earth is $11 \mathrm{~km} /…

The escape velocity for a body projected vertically upwards from the surface of earth is $11 \mathrm{~km} / \mathrm{s}$. If the body is projected at an angle of $45^{\circ}$ with the vertical, the escape velocity will be
  1. $11 \sqrt{2} \mathrm{~km} / \mathrm{s}$
  2. $22 \mathrm{~km} / \mathrm{s}$
  3. $11 \mathrm{~km} / \mathrm{s}$
  4. $\frac{11}{\sqrt{2}} \mathrm{~km} / \mathrm{s}$

Solution

Escape velocity of a body is independent of the angle of projection. Hence, changing the angle of projection is not going to effect the magnitude of escape velocity

Asked in: JEE Main 2003

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