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A vector, 5 units from the origin, along the X axis, is added to vector 2 units from the origin along the Y axis. What is the resultant vector?(a) 3î + 8ĵ(b) 5î + 2ĵ(c) 2î + 5ĵ(d) 2î + 7ĵThis question was addressed to me during a job interview.The doubt is from Vector Addition in portion Motion in a Plane of Physics – Class 11

Answer»

Right ANSWER is (b) 5î + 2ĵ

Easiest explanation: The vector 5 units from the origin and ALONG X axis is 5î. The vector 2 units from the origin and along Y axis is 2ĵ. Hence the sum is 5î + 2ĵ.



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