Ship A is located 4.2 km north and 3.0 km east of ship B. Ship A has a velocity

Question

Ship A is located 4.2 km north and 3.0 km east of ship B. Ship A has a velocity of 22 km/h toward the south and ship B has a velocity of 40 km/h in a direction 37° north of east.
(a) What is the velocity of A relative to B (Express your answer in terms of the unit vectors ihatbold and jhatbold, where ihatbold is toward the east.)
varrowbold =

(b) Write an expression (in terms of ihatbold and jhatbold) for the position of A relative to B as a function of t, where t = 0 when the ships are in the positions described as above.
rarrowbold =

(c) At what time is the separation between the ships least?
hours

(d) What is that least separation?
km

Explanation / Answer

Here,the same idea of your question http://www.physics.umt.edu/phys325/Phys215/Physics_215N_files/ch4HW_all.pdf

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