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A force of 2i + 3j + 2k N acts a body fo...

A force of `2i + 3j + 2k N` acts a body for 4s and produces a displacement of `3i + 4j + 5k` m calculate the power?

A

5W

B

6W

C

7W

D

9W

Text Solution

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The correct Answer is:
C
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AAKASH SERIES-VECTORS-Practice Sheet (Exercise-III) (Multiplication of Vectors (Level-I)) (Straight Objective Type Questions)
  1. Projection of the vector 2 hat(i) + 3hat(j) + 2hat(k) on the vector ha...

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  2. If vec(a) = 2 hat(i) + 3hat(j) + 6hat(k) and vec(b) = 3hat(i) + 4hat(j...

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  3. A force of 2i + 3j + 2k N acts a body for 4s and produces a displaceme...

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  4. When a force (8i + 4j) newton displace a particle through (3i- 3j) met...

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  5. The cross product of the vectors (2i - 3j + 4k) and (I + 4j -5k) is

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  6. The scalar and vector products of two vectors are 48sqrt(3) and 144 re...

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  7. What is the condition for the vectors 2i + 3j - 4k and 3i - aj + bk to...

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  8. a, b are the magntidues of vectors vec(a) " & " vec(b). If vec(a) xx ...

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  9. If |vec(A)| = 4N, |vec(B)| = 3N the value of |vec(A) xx vec(B)|^(2) + ...

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  10. Find the angle between the vectors (-2i + 2j) and 3i

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  11. Find the value of (vec(a) + vec(b)) xx (vec(a) - vec(b))=

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  12. A Vector vec(P) points vertically downwards and another vector vec(Q) ...

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  13. The angle between (bar(A) xx bar(B)) and (bar(B) xx bar(A)) is (in rad...

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  14. Choose the false statement

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  15. (vec(a) - vec(b)) xx (vec(a) + vec(b)) is equal to

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  16. The vector vec(a) xx (vec(b) xx vec(a)) is

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  17. If vec(C ) = vec(A) - vec(B), then:

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  18. If vec(A) and vec(B) are two vectors, which of the following relations...

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  19. The adjacent sides of a parallelogram is represented by vectors 2 hat(...

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  20. Area of the triangle whose base is given by bar(A) =i + j + k and one ...

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