2 A particle of mass 5 kg is moving with velocity \(2 \mathbf { i } + 5 \mathbf { j } \mathrm {~m} \mathrm {~s} ^ { - 1 }\). It receives an impulse of magnitude 15 Ns in the direction \(\mathbf { i } + 2 \mathbf { j } - 2 \mathbf { k }\). Find the velocity of the particle immediately afterwards.