Two ships s1 and s2 at a given instant are 3 km apart ; 52 being south – east of s1 . The ship s1 is travelling 12 km/hr. due east and ship s2 is travelling 20 km/hr due north .Make calculation for 
a) velocity of the ship s2 relative to s1.
b) the shortest distance between the two ships 
c) the time when two ships are nearest.Two ships s1 and s2 at a given instant are 3 km apart ; 52 being south – east of s1 . The ship s1 is travelling 12 km/hr. due east and ship s2 is travelling 20 km/hr due north .Make calculation for
a) velocity of the ship s2 relative to s1.
b) the shortest distance between the two ships
c) the time when two ships are nearest.