Given the two position vectors r1 = (-2.,0, 8.0, -2.0) and r2 = (4.0, -2.0, 2.0), in meters, find (a) their resultant and (b) the angle the resultant makes with the x-axis.
r1=(-2,8,-2) and
r2=(4,-2,2)
(a)Now we have to find out the resultant of the two vectors, so we just have to add the two vectors.
Resultant will be=
[(-2+4),(8-2),(-2+2)]
=(2,6,0)
And the magnitude will be,
=6.32
(b)
The angle it makes with x axis is,
=71.5650
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