3.) Three confused sled dogs are trying to pull a sled across the snow in Alaska. Alutia pulls to the east with a force of 135 N. Seward pulls to the east with a force of 143 N. Kodiak pulls to the west with a force of 153 N. a. What is the net force on the sled? F,=1351 F2 = 1431 F = 1531 Fnet = F.+Fe+F3 Fniet: 1351+ 1431-1531= 1251 %3D %3D Fret: 12SN

You go on a long hike by first walking 25 km southeast (i.e., 45° south of east) from your car. You then stop and camp for the night. On the second day, you walk 40 km in a direction 60° north of east. In what direction, as measured from the position of your car, is your final position? (Give your answer to the nearest degree.)

A plane is flying at a speed of 320 miles per hour on a bearing of N65°E. Its ground speed is 390 miles per hour and its true course, given by the direction angle of the ground speed vector, is 30°. Find the speed, in miles per hour, and the direction angle, in degrees, of the wind. The speed of the wind is miles per hour. (Do not round until the final answer. Then round to the nearest tenth as needed.)

Suppose that a person has an average heart rate of 91.0 beats/min. (Express your answers to problems in this section to the correct number of significant figures and proper units.) How many beats does he or she have in 6.0 y? How many beats does he or she have in 6.00 y? How many beats does he or she have in 6.000 y?