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a paritvle moves 14m along vector 6i+2j+3k then 7m along 3i-2j+6k. Total displacement is?

a paritvle moves 14m along vector 6i+2j+3k then 7m along 3i-2j+6k. Total displacement is?

Grade:11

1 Answers

Aditya Gupta
2075 Points
2 years ago
Note that magnitudes of  3i-2j+6k and 6i+2j+3k are both 7
so displacement is given by:
14*( 6i+2j+3k)/7+7*(3i-2j+6k)/7
=12i+4j+6k+3i-2j+6k
=15i+2j+12k

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