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A vector, 7 units from the origin, along the X axis, is added to vector 11 units from the origin along the Y axis. What is the resultant vector?(a) 3î + 8ĵ(b) 7î + 11ĵ(c) 11î + 7ĵ(d) 2î + 7ĵThis question was addressed to me in an international level competition.My doubt stems from Vector Addition in section Motion in a Plane of Physics – Class 11

Answer»

Right option is (b) 7î + 11ĵ

Explanation: The VECTOR 7 units from the ORIGIN and along X axis is 7î. The vector 11 units from the origin and along Y axis is 11ĵ. Hence the sum is 7î + 11ĵ.



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