question_answer

Two seconds after projection a projectile is travelling in a direction inclined at \[30{}^\circ \] to the horizontal. After one more second, it is travelling horizontally. The magnitude and direction of its initial velocity are -

A) \[2\sqrt{20}m/s\,\,60{}^\circ \]

B)        \[20\sqrt{3}\,m/s\,\,60{}^\circ \]

C) \[6\sqrt{40}m/s\,30{}^\circ \]

D)        \[40\sqrt{6} m/s 30{}^\circ \]