position vector (review)
If r1 = {3i4j+3k}m, r2= {4i5k)m, r3= {3i2j+5k}m, determine the magnitude and direction of r=2*r1r2+3*r3.
Should I be executing the following problem in parts? For example,
have r' = 2*r1r2
then have r = r' +3*r3
?? I have tried finding the answer four different ways and i cant seem to get the right answer. Guidance, please?
