Question

2 If A is a vector of magnitude 5 units due east. What is the
magnitude and direction of a vector -5Ā?
(a) 5 units due east
(b) 25 units due west
(c) 5 units due west
(d) 25 units due east​

Answer 1

Answer:

the answer is (b)

It can be multiplied by dot product.

5 . 5=25

Since there is also a negative sign, it means that the object is moving in the opposite direction.

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