Question

The escape velocity from earth is 11.2 km/s. If a body is to be projected in a direction making an angle 45$^{\circ}$ to the vertical, then the escape velocity is

• A. $11.2 \times 2\, km/s$
• B. $11.2\, km/s$
• C. $11.2/ \sqrt 2\, km/s$
• D. $11.2 \sqrt 2 \,km/s$

Answer 1

Answer: (B)

$11.2\, km/s$

Answer 2

Escape velocity does not depend on the angle of projection. Escape velocity will remain same. Hence, scape velocity is $11.2\,km/s$ .