Two ships A and B are 4 km apart. A is due west of B. If a moves with uniform velocity of `8kmhr^(-1)` due east and B move with a uniform velocity of `6kmhr^(-1)` due south, calculate (i) the magnitude of velocity of A relative to B, (ii) the closest distanc apart of A and B.

Answer

(i) `10kmhr^(-1)` (ii) 2.4 km