Question

what is the resultant of unit vector J and K

Answer 1

Answer:√2

here i am using ~symbol to denote the arrow above vectors .

given .

..a~ =0i^+1j^+1k^

components :0,1,1

resultant =√(0)^2+1^2+1^2

=√1+1

=√2

Answer 2

The resultant if unit vector j^ and vector k^ is unit vector i^.

• A vector quantity has both magnitude and direction.
• Acceleration, velocity, force and displacement are all examples of vector quantities.
• A unit vector is a vector which has a magnitude of 1. There are three important unit vectors which are commonly used and these are the vectors in the direction of the x, y and z-axes.
• The unit vector in the direction of the x-axis is i, the unit vector in the direction of the y-axis is j and the unit vector in the direction of the z-axis is k.
• It works in a circular motion .

• If i^ and j^ then k^.

       If j^ and k^ then i^.

       If k^ and i^ then j^.

• Breaking the sequence will result in a negative sign.

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