Question

.Given the displacement vectors A = 6f-4j+8k B = 2î+4ƒ^ − 14k

Find the magnitude and the unit vector of the vector 0.5A + 0.5B

Answer 1

Step-by-step explanation:

A = 6i - 4j + 8k

B = 2i + 4j - 14k

A + B = (6+2)i + (-4+4)j + (8-14)k

A + B = 8i +0j -6k

A + B = 8i - 6k

(1/2)(A + B) = 4i - 3k

d = √ (4² + 3²) = 5

e = (4/5)i -(3/4)j