GK
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A and B must be displacements
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A and B must have equal lengths
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A and B must point in opposite directions
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A and B point in the same direction
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Detailed explanation-1: -Two vectors A and B are added together to form a vector C. The relationship between the magnitudes of the vectors is given by: A2+B2=C2. Which statement concerning these vectors is true? A and B must be at right angles to each other.
Detailed explanation-2: -Two vectors A and B are added together to form vector C=A+B. The relationship between the magnitude of these vectors is given by: Cx=A cos30+B and Cy=-Asin30 .
Detailed explanation-3: -Two vectors A and B are added together to give a resultant vector R: R = A + B. The magnitudes of A and B are 3 m and 8 m, respectively, but the vectors can have any orientation.
Detailed explanation-4: -Hence, the magnitude of resultant vector is always less than or equal to (|→a|+|→b|).
Detailed explanation-5: -Given a position vector →v=⟨a, b⟩, the magnitude is found by |v|=√a2+b2.