Kinematics Question 447

Question: Find a vector of magnitude 5 along BA where coordinates of points A and B are (0, 1, 3) and (1, 4, 6) respectively

Options:

A) (519)[i^+3j^+3k^]

B) (519)[i^+3j^+3k^]

C) 5[i^+3j^+3k^]

D) 5[i^+3j^+3k^]

Show Answer

Answer:

Correct Answer: B

Solution:

[b] BA=OAOB=(j^+3k^)(i^+4j^+6k^)

=i^3j^3k^

Unit vector along BA=i^3j^3k^/19



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