a boat heads due south directly across a river at 30ft/min. the river is flowing east at 20ft/min.Find the resultant speed of the boat
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Answer:
Resultant speed is 36 ft/min at 56.3°South to East
Step-by-step explanation:
A boat heads due south directly across a river at 30ft/min. the river is flowing east at 20ft/min.Find the resultant speed of the boat
the river is flowing east at 20ft/min
boat heads due south directly across a river at 30ft/min
the resultant speed of the boat = √(20)² + (30)²
=√400 + 900
=√1300
= 10√13
= 36 ft/min
Angle = Tan⁻(30/20) = 56.3°
Resultant speed is 36 ft/min at 56.3°South to East
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