1.Ship A leaves port sailing in a direction 60 degree C north of due east and sails for 12 hours at 10 knot . Sheep B leaves the same port 3 hours later and sails due east at 25 knot for 9 hours. How far apart (in nautical miles) are they at this time? A knot is nautical mile (6076) per hour
2.Vehicle A enters the interstate and travel at 60 mph for 1/2 hour, stops for 30 mins then continues at 70 mph. If a vehicle B enters the interstate at the same location as A, but 1 hour late, what average speed will B have to mantain to overtake A in exactly 100 miles?