6 A bullet is fired from a rifle at a target, which is at a distance of 420 metres from the rifle. The bullet leaves the rifle travelling at \(V \mathrm {~m} \mathrm {~s} ^ { - 1 }\) and at an angle of \(2 ^ { \circ }\) above the horizontal. The centre of the target, \(C\), is at the same horizontal level as the rifle. The bullet hits the target at the point \(A\), which is on a vertical line through \(C\). The bullet takes 1.8 seconds to reach the point \(A\).

1. Find \(V\), showing clearly how you obtain your answer.
2. Find the distance between \(A\) and \(C\).
3. State one assumption that you have made about the forces acting on the bullet.
   [0pt] [1 mark]