Question

How do i tell if each i and j value is going to be a negative value or positive value i see a pattern for a rule but i cant figure out the rule.

(1. Write each vector in the figure in terms of the unit vectors i and ſ. Get the sum of all four vectors. B (15.0 m) A=(-8.007 m; B =(7.50 +13.000m C =(-10.88 -5.07])m; D=(-7.99ſ +6.02)m A+B+C+D=(-11.42 +5.953) D(10.0m) 30,00 53.0 25.00 C (12.0 m) VA (8.00 m)

Answer 1

الامر To convert these vector in iis form we need to resolve vector along & anis and y anis. And for th anis we assign tł and for an anis we assign î similarly for y anis we assign +7 as unit vectors. So as we can see A vector is already in y direction th YA 18.00) so à = -8 7 as it is along negative - y anis. For vector Š resolue components along a and g anis as shown Oz 30 Blose to Bois) en sn Boing As we can positive. So see n and y components are

B - & B sino ² et Blosoj B - (7.50 ↑ & 13.0 5 Jm. Similarly for c be=950 ICloso e csino, (120) Both and combonents negative y negative a are along anis so Ć - - Close, Č=(-10.88 Now for î - Csino ð Î - soorj , m ŏ vector oa stolose 53 asino components are along positive y and negativen anis.so . ö = - Dsino ? to loro i o = (-7.997 +6.62 J ]m So ATB tc to – (~11.4 ↑ + 5.95 h , m.

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