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Solution: 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 u 5 30.0° north of east and 150 m south. Find her resultant displacement from the cave entrance. Figure P3.21 suggests the situation but is not drawn to scale.

Problem

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 u 5 30.0° north of east and 150 m south. Find her resultant displacement from the cave entrance. Figure P3.21 suggests the situation but is not drawn to scale.