The next leg of your journey will test your physical ...
The next leg of your journey will test your physical strength and navigational abilities in the English Channel. You fly into Brighton, UK, and immediately drive to a beach on the south coast of England. Click on the thumbtack “Stage 2 – Starting Point” to begin this part of the journey.
Before you begin, create the following thumbtacks at the given latitudes/longitudes (Just add a thumbtack and copy/paste in these coordinates)
Create thumbtack and name it “Wight Docking Point”
Latitude: 50.600594°
Longitude: -1.184321°
Create thumbtack and name it “Swim Departure Site”
Latitude: 50.900653°
Longitude: 0.967739°
Create thumbtack and name it “Swim Arrival Site”
Latitude: 50.863712°
Longitude: 1.590749°
1) You spend the first night camping out on the beach, and here you are given your first challenge – tomorrow you must swim across the English Channel.
a) Your guide offers you a GPS system that allows you to measure the bearing of any point from your current location. From this start point, use the screen protractor to find the bearing of:
the swim departure site ______________________ (69.92)
the swim arrival site __________________________ (81.52)
b) You are told that your current location is 52.98 km away from the departure site in England, and 93.68 km away from the arrival site in France. Given this information and the bearings found above, use trigonometry to calculate the distance you will have to swim to cross the English Channel. (43.12km)
c) Measure the actual distance with the ruler tool. How close was your estimate? (actual – 43.14 km)
2) Upon arrival in France, you bike your way down the coast to the port town of Le Havre. From Le Havre, you must to navigate a raft across the English Channel to the Isle of Wight and back to Brighton.
a) Leaving Le Havre, you travel along a straight path to the Isle of Wight at a bearing of 324. If you traveled at an average speed of 47 km/hour for 3 hours and 15 minutes, how far did you travel? (152.75 km)
After a few nights on the Isle of Wright, you are ready to return to Brighton. However, when you board the raft, you find that your GPS system is no longer working.
b) You remember from previous trips that the Isle of Wight and Brighton are 77km apart and that Brighton is 147km from Le Havre. Using these distances and the information given in part (a), calculate the bearing at which you must leave the Isle of Wight to travel in a straight path to Brighton. (angle = 71.02; bearing is 180-71.02-36=72.98)
c) Check your answer to part (b) using the screen protractor? How accurate were you? What may account for an error that exists? (Actual: 72.83)
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