A boat is travelling upstream at 3 km/h [N] relative to the shore. If there is a current of 5 km/h, what is the boat's velocity relative to the water? 8 km/h 15 km/h 2 km/h 8 km/h 2 km/h
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A: initial length = A = 100 Km (North ) final length = B = 200 km ( east )
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- Assume North is positive and South is negative. Home is considered to be 0 km. Match each event with its displacement from Home. Location Displacement from Home Leaves House 0 km Arrives at Gas Station 12km Leaves Gas Station +12km Arrives at School +20km Leaves School +20km Arrives at Fire -28km Leaves Fire -28km Arrives at Hospital -8 kmAn airplane travels to an airport near the beach, 250 km south. On the return trip, there is poor weather, so the airplane lands at a different airport, halfway between the original airport and the beach airport. What is the airplane's displacement? 375 km south 125 km north 250 km south 125 km southThe driver of a motorboat that can move at 12 m/s in still water wishes to travel directly across a narrow strait in which the current flows at 8 m/s. At what angle upstream should the driver head the boat? a) 63.3° b) 27.8° c) 48.1° d) 41.8°
- HelpA river that is one-quarter of a mile wide is flowing at a speed of 1 mile per hour. A swimmer enters the river and swims directly toward the opposite bank at a speed of 6 miles per hour. The current alters the swimmer's direction and causes her to reach the opposite bank some distance downstream. Find the angle the swimmer's resultant path makes with the line directly across the river. (Use decimal notation. Give your answer to two decimal places. Include the degree sign in your answer.) angle How far downstream does the swimmer make landfall? (Give an exact answer. Use symbolic notation and fractions where needed.) distance = milesYour plane was travelling at 180 kn for 12 mins, how many nmi did you travel in those 12 mins? 0 36 km 12 nmi 24 nmi O 36 nmi 36 mi