vrel=v1−v2=40i+50j
rrel=r1−r2=−80i−150j
tmin=∣∣vrel∣2vrel⋅rrel∣=∣((40)2+(50)2)2−3200−7500∣
tmin=410010700=41107=2.6h
Ship A is sailing towards north-east with velocity) v=30i^+50j^kmh−1 where i^ points east and j^, north. The ship B is at a distance of 80km east and 150km north of Ship A and is sailing towards the west at 10kmh−1. A will be at the minimum distance from B in:
Held on 8 Apr 2019 · Verified 6 Jul 2026.
4.2h
3.2h
2.6h
2.2h
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