Homework Help: Physics

Posted by :) on Friday, June 22, 2012 at 7:44am.

A jogger runs 145m. in a direction 20.0 degrees east of north (displacement of vector A) and then 105m. in a direction 35.0 degrees south of east (displacement of vector B). Using components, determine the magnitude and direction of the resultant vector C for these two displacements.

Physics - MathMate, Friday, June 22, 2012 at 9:22pm
Hints:

X-component of resultant
= ∑Di*cos(θi)
and
Y-component of resultant
= ∑Di*sin(θi)

D(1)=145m, θ(1)=90-20=70° (from x-axis)
D(2)=105m, θ(2)=-35° (from x-axis)
Physics - :), Saturday, June 23, 2012 at 5:26am
Thank you. I got now the answer. :)

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