Kinematics Question 40

Question: The vectors 5i+8j and 2i+7j are added. The magnitude of the sum of these vector is [BHU 2000]

Options:

A) 274

B) 38

C) 238

D) 560

Show Answer

Answer:

Correct Answer: A

Solution:

Sum of the vectors R→=5i^+8j^+2i^+7j^

=7i^+15j^ magnitude of R→=|R→|=49+225

=274

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