2] Unit vector parallel to the resultant of vectors 4i – 3j and 8i + 8j and 8i + 8j will be:

(a) (24i+5j)/13 (b) (12i+5j)/13

(c) (6i+5j)/13 (d) none of these

Question

2] Unit vector parallel to the resultant of vectors 4i – 3j and 8i + 8j and 8i + 8j will be: (a) (24i+5j)/13 (b) (12i+5j)/13 (c) (6i+5j)/13 (d) none of these

Fawz Naim · Answer

resultant of the given vecters is 20i+13j and its direction is 20i+13j/sqr root(569) so option (d) is correct

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2] Unit vector parallel to the resultant of vectors 4i – 3j and 8i + 8j and 8i + 8j will be: (a) (24i+5j)/13 (b) (12i+5j)/13 (c) (6i+5j)/13 (d) none of these

2] Unit vector parallel to the resultant of vectors 4i – 3j and 8i + 8j and 8i + 8j will be:

(a) (24i+5j)/13 (b) (12i+5j)/13

(c) (6i+5j)/13 (d) none of these

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