Which of the following best states the difference between a description and an explanation? A. A description is a statement that
1 answer:
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Answer:
31.8 m in the positive x-direction
Explanation:
Here we have an example of multiplication of a vector by a scalar.
In order to perform this operation, we have to:
- multiply the magnitude of the vector by the scalar
- reverse the direction of the vector if the scalar is a negative number
In this problem, the original vector has a lenght of 8.6 m and it points in the negative x direction. Now we have to find the vector -3.7A, so we have:
- The magnitude is obtained by calculating the product
- The direction is reversed, because the scalar is -3.7, so the new vector will point in the positive x-direction
So the final vector is 31.8 m in the positive x-direction, and therefore its x-component is also 31.8 m in the positive direction.
The time it takes for a point to reach 0 displacement from maximum displacement is 
of a cycle. Thus, one period (
) will take 
.
The frequency is simply
.
The speed is given by:
The frequency is simply
The speed is given by: