Posted by JOAN on Tuesday, November 20, 2012 at 7:22am.
while exploring a cave, a spelunker starts at the entrance and moves the following distances in a horizontal plane. she goes 75.0 m north, 250 m east, 125 m at an angle theta equal to 30.0 north of east, and 150 m south. find her resultant displacement from the cave entrance.

PHYSICS  Steve, Tuesday, November 20, 2012 at 10:24am
the displacement for each leg of the journey is
(0,75)
(250,0)
(108.25,62.5) since x=125cos30°, y=125sin30°
(0,150)
add 'em up to get
(358.25,12.5)
358.5m final displacement.
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