Vector Components Homework: Find Vz & Length

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SUMMARY

The discussion focuses on calculating the z component and the length of a resultant vector derived from two given vectors, V1 (2.61, 1.72, 0.00) and V2 (3.84, -4.54, -1.90). The z component of the resultant vector is confirmed as -1.90, obtained by summing the z components of V1 and V2. For calculating the length of the resultant vector, participants are advised to apply the Pythagorean theorem in three dimensions, which involves using the formula √(Vx² + Vy² + Vz²).

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  • Understanding of vector components in three-dimensional space
  • Familiarity with the Pythagorean theorem
  • Basic knowledge of vector addition
  • Ability to perform arithmetic operations with real numbers
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  • Learn about "Pythagorean theorem in three dimensions" for calculating vector lengths
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Homework Statement



The components of a vector V are often written (Vx, Vy, Vz). What is the z component of a vector which is the sum of the two vectors, V1 and V2, whose components are (2.61, 1.72, 0.00) and (3.84, -4.54, -1.90)?

b) Calculate the length of this vector.

Homework Equations


The Attempt at a Solution



Okay so for part A, I got -1.90 (vz1 + vz2) and that is correct.

Part B? I don't understand how to do it.

Thanks for the help!
 
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For part B, think about Pythagorus...in 3D.
 
Got it.. Thanks!
 

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