Question

For a body to escape from earth, angle at which it should be fired is

• A. ${45}^0$
• B. $>{45}^0$
• C. $<{45}^0$ and
• D. any angle

Answer 1

The correct option is D

any angle

Step 1 : Given data

The body to escape from earth

We know

Escape velocity , $v_e=\sqrt{\frac{2GM}{R}}$

$R=$Radius

$G=$Gravitational constant

Step 2 : To find the angle

To escape from earth the particle should be provided with escape velocity $=\sqrt{\frac{2GM}{R}}$

Thus escape velocity will remain the same for all projected angles.

Hence the correct answer is Option D