2 A particle \(P\) is projected with speed \(V \mathrm {~m} \mathrm {~s} ^ { - 1 }\) at an angle of \(60 ^ { \circ }\) above the horizontal from a point \(O\) on horizontal ground. \(P\) is moving at an angle of \(45 ^ { \circ }\) above the horizontal at the instant 1.5 s after projection.

1. Find \(V\).
2. Hence calculate the horizontal and vertical displacements of \(P\) from \(O\) at the instant 1.5 s after projection.