- #1

chocolatelover

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## Homework Statement

A particle undergoes the following consecutive displacements 3.8m south, 8.4m northeast, and 14 m west. What is the resultant displacement and angle from the positive x-axis?

**2. Homework Equations**

R=square root (Rx^2+Ry^2+Rz^2)

In this case the displacement is the same thing as the magnitude right? I know that the answer is 8.34m and 165°, but I'm not getting the right answer.

This is what I did:

i=8.4

j=3.8

k=8.4

R=)

square root (8.4^2+3.8^2+8.4^2)

=12.47

How would I find the angle? Would I just use tangent?

Thank you very much

R=square root (Rx^2+Ry^2+Rz^2)

In this case the displacement is the same thing as the magnitude right? I know that the answer is 8.34m and 165°, but I'm not getting the right answer.

This is what I did:

i=8.4

j=3.8

k=8.4

R=)

square root (8.4^2+3.8^2+8.4^2)

=12.47

How would I find the angle? Would I just use tangent?

Thank you very much