1. An archer fires an arrow directly upward, then quickly runs from the launching spot to avoid being struck by the returning arrow. If the arrow's initial velocity is 66.5 m/s upward, how long, in seconds, does the archer have to run away before the arrow lands? (Assume that the acceleration due to gravity is 9.81 m/s2 2. The arctic tern migrates farther than any other bird. Suppose the tern travels 16753 km south, only to encounter bad weather. Instead of trying to fly around the storm, the tern turns around and travels 525 km north to wait out the storm. It then turns around again immediately and flies 14723 km south to Antarctica. What is the tern's average speed in km/h if it makes this trip in 120 days? 3. A 295 kg iceboat is propelled across the horizontal surface of a frozen lake by the wind. The wind exerts a constant force of 413 N while the boat moves 962 m. Assume that frictional forces are negligible and that the boat starts from rest. What is the boat's final speed in meters per second