engineering science N4
posted by sihle .
Two ships leave port simultaneously. Ship A sails northwest at 30 km/h and ship B sails S 40 degrees W at 30 km/h. Calculate the velocity of ship B relative to the velocity of ship A.

You add them as vectors.
Vbreltoa=velocitybveloictya AS VECTORS 
A = (21.2,21.2)
B = (19.3,23.0)
BA = (1.9,44.2)
= 44.2,87.5° or 44.2km/hr S2.5°E
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