A particle of mass 0.2 lg is moving with linear velocity (i-j+2k) . If the radius vector r= 4i+j-k , the magnitude
OPTION A - 2.14 units
OPTION B - root 4.28 units
OPTION C - root 107 units
OPTION D - root 24 units
please give the correct explanation for this question please please please please
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option b is right answer pleas make me brainlist
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