Question

a sub. leaves a navel base traveling 12 knots with a direction of 170 degrees. on its way the sub travels through an ocean current moving at .9 knots with a direction of 95 degrees. find the true direction and speed of the sub. on its trip

Answer 1

in general, here is how you approach these problems,

1)break everythign up into x and y components (multiplying each one by cos or sin of the respective angle

2)for each component, determine if the forces are acting with each other or agiasnt each other. add these 2 vectors to get a new vector.

3) find the vectors magnitude and direction.

Answer 2

this is the drawing i made