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If a boat can travel 3 miles per hour in still water it is in a river that flows south 4 miles if the boat heads eastward directly across the river what are the velocity directionand magnitude of the?
Wiki User
∙ 14y ago
The magnitude of the velocity is sqrt(32 + 42) = sqrt(9 + 16) = sqrt(25) = 5 mph.
The heading of the boat is 143.1301 degrees ie 53.1301 degrees South of East.
NB: 53.1301 = arctan(4/3)
Wiki User
∙ 14y ago
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