Friday

August 22, 2014

August 22, 2014

Posted by **G** on Thursday, September 9, 2010 at 3:46pm.

Question part Points Submissions 1 2 3

0/1 0/1 0/1

0/7 3/7 2/7

Total 0/3 A vector A has a magnitude of 49.0 m and points in a direction 20.0° below the x axis. A second vector, B, has a magnitude of 70.0 m and points in a direction 41.0° above the x axis.

Find the magnitude and direction of the vector D.

- Physics -
**MathMate**, Thursday, September 9, 2010 at 8:06pmI do not see how the vector D is defined. I have to assume that vector D is the sum of vectors A and B.

To find the resultant (sum) of vectors, you would sum the x- and y-components by resolving the vectors in the x-direction (Pcos(θ)) and y-direction (Psin(θ)).

The magnitude of the resultant is

sqrt(SumX²+SumY²)

and the direction is obtained by

atan(SumY/SumX).

Pay attention to the quadrant of the angle by observing the signs of SumX and SumY.

**Related Questions**

physics - Question part Points Submissions 1 0/1 1/5 Total 0/1 ...If a truck ...

physics - Question part Points Submissions 1 2 0/1 0/1 0/10 0/10 Total 0/2 A 3.5...

math - Give the numbers of elements in the regions marked I, II, III, IV, V, VI...

physics - Question part Points Submissions 1 0/1 5/15 Total 0/1 You ride your ...

physics - Question Part Points Submissions Used A bus slows down uniformly from ...

Physics 1 - 6. –/1.5 points CJ8 4.P.014. My Notes | . Question Part Points ...

math - Question part Points Submissions 1 2 3 0/1 0/1 0/1 0/2 0/2 0/2 Total 0/3 ...

calculus - Question Part Points Submissions Used What is the percentage ...

physic - .Question part Points Submissions 1 ¨C/1 0/2 Total ¨C/1 ...A volleyball...

stats - Question Part Points Submissions Used The number of ships to arrive at ...