question_answer

A body is projected with escape velocity \[11.2\text{ }km/s\] from earth's surface. If the body is projected in a direction \[30{}^\circ \] angle to the vertical, its escape velocity in the casse will be:

A)  \[11.2km/s\]               

B)  \[11.2\times \frac{1}{2}km/s\]

C)  \[11.2\times \left( \frac{\sqrt{3}}{2} \right)km/s\]

D)  None of these