# Vector and scalar magnitude problem

• lsu777
In summary, the problem involves finding the x component and magnitude of vector A given the information that vector -1.90A has a magnitude of 59.1 m and points in the positive x direction. The attempt at a solution involves using basic algebra, but the direction and length of vector A are not given, leading to incorrect answers.

## Homework Statement

The vector -1.90A has a magnitude of 59.1 m and points in the positive x direction. Calculate the x component of the vector A.

Calculate the magnitude of the vector A.

## Homework Equations

3. The Attempt at a Solution

I understand vectors but having a problem understanding how to set this problem up. this is the last problem of a 20 problem set and is the only one I can't figure out. would appreciate any help ya'll could provide.

I think you just use basic algebra for this.

-1.90 A is 1.9 times the length of vector A, and points in the opposite direction as vector A. So what direction does vector A point in, and what's its length?

doesnt give me anymore information then what is given. and i tried 59.1/1.9 to give me the answer but it said that was incorrect.

Shouldn't it be negative?

yea i used the negative. i actually tried both ways and was told both were incorrect. only have one chance left.

## 1. What is the difference between vector and scalar quantities?

Vector quantities have both magnitude and direction, while scalar quantities only have magnitude.

## 2. How do you calculate the magnitude of a vector?

The magnitude of a vector can be calculated using the Pythagorean theorem, by taking the square root of the sum of the squares of its components.

## 3. Can a vector have negative magnitude?

No, the magnitude of a vector is always a positive value.

## 4. How do you represent a vector in mathematical notation?

A vector is typically represented in bold typeface, such as v, with an arrow above it to indicate its direction.

## 5. What are some real-world examples of vector and scalar quantities?

Examples of vector quantities include velocity, force, and displacement. Examples of scalar quantities include mass, temperature, and time.