Math Problem Statement

A 23.7 m/s velocity vector is positioned 18o South of West. Find the x and y components of the velocity vector correct to 1 decimal place. Include the sign and the unit (if the sign is positive, do not include it). Type the answers in this order:

First blank the x component, second blank the y component.

Solution

To find the x and y components of the velocity vector, we can use the following equations:

  • Vx=Vcos(θ)V_x = V \cdot \cos(\theta)
  • Vy=Vsin(θ)V_y = V \cdot \sin(\theta)

where:

  • V=23.7m/sV = 23.7 \, \text{m/s} (the magnitude of the velocity vector),
  • θ=18\theta = 18^\circ (the angle south of west),
  • The x-component (West-East) will be negative since it's directed to the west,
  • The y-component (North-South) will be negative since it's directed to the south.

Now, let's calculate:

  1. Vx=23.7cos(18)V_x = 23.7 \cdot \cos(18^\circ)
  2. Vy=23.7sin(18)V_y = 23.7 \cdot \sin(18^\circ)

I'll compute these values for you.The x and y components of the velocity vector are:

  • xx-component: 22.5m/s-22.5 \, \text{m/s}
  • yy-component: 7.3m/s-7.3 \, \text{m/s}

Would you like further details or have any questions?

Here are some related questions:

  1. How do you interpret a vector's direction in relation to the x and y components?
  2. How would the components change if the angle were 18° North of West?
  3. What is the magnitude of the vector if the components were given instead?
  4. How do the signs of the components reflect the direction of the velocity?
  5. How can the Pythagorean theorem verify the magnitude of a vector from its components?

Tip: Always remember that the trigonometric functions cos\cos and sin\sin help resolve vectors along horizontal and vertical axes.

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Math Problem Analysis

Mathematical Concepts

Vector Decomposition
Trigonometry

Formulas

V_x = V * cos(θ)
V_y = V * sin(θ)

Theorems

Trigonometric Function Theorem

Suitable Grade Level

Grades 10-12