A ship 'A' is moving westwards with a speed of 10 km/h and a ship B 100 km south of 'A' is moving northwards with a speed of 10 km/h. The time after which the distance between them becomes shortest is?
As we learnt in
Case of Relative velocity -
When A & B are moving along with straight line in opposite direction.
Velocity of object A.
Velocity of object B.
Relative velocity of A with respect to B is.
is because of opposite direction.
- wherein
E.g A body moves in east with speed of 20m-1, And body in west with velocity of 5ms-1.
Find velocity of A with respect to B.
= (20+5 ) ms-1
= 25 ms-1
Time taken to reach shortest path is
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