How many seconds before the plane is directly overhead

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Reference no: EM1350287

Q. A spelunker is surveying a cave. She follows a passage that takes her a distance 189 straight west, then a distance 220 in a direction 45.0 east of south, then a distance 280 at 30.0 east of north. After a fourth unmeasured displacement she finds herself back where she started.

Q. The pilot of an airplane traveling 170 {rm km/h} wants to drop supplies to flood victims isolated on a patch of land 110 {rm m} below. The supplies should be dropped how many seconds before the plane is directly overhead?

Reference no: EM1350287

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