Question

A = 3i + 4j
JG and B =
JG i – j, are two vectors in x, y plane. Find the magnitude of the sum of these
two vectors

Answer 1

Answer on question #53639, Physics / Mechanics — Kinematics — Dynamics

Question A = 3i + 4j and B = i - j, are two vectors in x, y plane. Find the magnitude of the sum of these two vectors

Solution Let us find vector A+B

$3i+4j+i-j=4i+3j$

Now we can find magnitude of A+B

$|A+B|=\sqrt{4^{2}+3^{2}}=\sqrt{25}=5$

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