Posted by **sihle** on Monday, March 4, 2013 at 1:57pm.

Two ships leave port simultaneously. Ship A sails north-west 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.

- engineering science N4 -
**bobpursley**, Monday, March 4, 2013 at 2:28pm
You add them as vectors.

Vbreltoa=velocityb-veloictya AS VECTORS

- engineering science N4 -
**Steve**, Monday, March 4, 2013 at 2:28pm
A = (-21.2,21.2)

B = (-19.3,-23.0)

B-A = (1.9,-44.2)

= 44.2,-87.5° or 44.2km/hr S2.5°E

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