Editor Staff asked 1 year ago
The vector 40î + 30ĵ is added to a vector. The result gives 15î + 3ĵ as the answer. The unknown vector is _____
(a) -25î – 27ĵ
(b) 25î + 27ĵ
(c) -25î + 27ĵ
(d) 25î – 27ĵ
The question was asked by my college director while I was bunking the class.
My enquiry is from Vector Addition topic in chapter Motion in a Plane of Physics – Class 11
Select the correct answer from above options
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Editor Staff answered 1 year ago
Correct choice is (a) -25î – 27ĵ
The best I can explain: The required vector can be obtained by subtracting 40î + 30ĵ from 15î + 3ĵ. The result gives -25î – 27ĵ. One should pay attention on which vector has to be subtracted from which one.
