Homework Help: PHysics

Posted by Jesse on Monday, October 2, 2006 at 3:31pm.

Vector a has a magnitude of 5 m and is directed east. vector b has magnitude of 4m and is directed 35 degrees west of north.

A)What is the magnitude and direction of vector a + vector b

b)What is the magnitude and direction of vector b- vector a?

I should have gotten
a)4.2m at 40 degrees east of north
b)8m at 24 degrees north of west

I am confused by this problem

Change vector b to N,E coordinates.

I get B= -2.3E + 3.3N

Now add them for part a.
A+ B= 5E -2.3E + 3.3N and that converts to the answer given.

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