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The unit vector parallel to the resultan...

The unit vector parallel to the resultant of the vectors `vecA=4hati+3hatj+6hatk` and `vecB=-hati+3hatj-8hatk` is

A

`1/7(3hati+6hatj-2hatk)`

B

`1/7(3hati+6hatj+2hatk)`

C

`1/49(3hati+6hatj-2hatk)`

D

`1/49(3hati-6hatj+2hatk)`

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The correct Answer is:
A
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ERRORLESS -VECTORS-Exercise
  1. If a unit vector is represented by 0.5hati + 0.8hatj + chatk the value...

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  2. A boy walks uniformly along the sides of a rectangular park of size 40...

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  3. The unit vector parallel to the resultant of the vectors vecA=4hati+3h...

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  4. Surface area is

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  5. With respect to a rectangular Cartesian coordinate system, three vecto...

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  6. The angles between the two vectors vecA=3hati+4hatj+5hatk and vecB=3ha...

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  7. The position vector of a particle is given by vecr=(3t^(2)hati+4t^(2)h...

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  8. Unit vector parallel to the resultant of vectors A = 4hati - 3hatj and...

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  9. The component of vector A=2hati+3hatj along the vector hati+hatj is

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  10. The angles between the two vectors vecA=3hati+4hatj+5hatk and vecB=3ha...

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  11. There are two force vectors, one of 5 N and other of 12 N at what angl...

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  12. If vecA=4hati-3hatj and vecB=6hati+8hatj then magnitude and direction ...

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  13. A truck travelling due to north at 20m s^(-1) turns west and travels a...

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  14. If the sum of two unit vectors is a unit vector,then find the magnitud...

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  15. vecA=2hati+hatj,B=3hatj-hatk and vecC=6hati-2hatk. value of vecA-2ve...

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  16. An object of m kg with speed of v m s^(-1) strikes a wall at an angle ...

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  17. For the resultant of the two vectors to be maximum, what must be the a...

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  18. A particle is simultaneously acted by two forces equal to 4 N and 3N. ...

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  19. Two vectors vec(A) and vec(B) lie in plane, another vector vec(C ) lie...

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  20. If the resultant of the two forces has a magnitude smaller than the ma...

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