ck Jun nown 64. Three forces are acting on the ring in Figure 23. What 72. Moving Appliance is the net force acting on the ring? erator delivered. realize that the r position, so you ob Bred ordither 128 N If the refrigerato the nation of kinetic friction ist. erator and the f 128 N 30.0 of friction betw 64 N + x hard do you ha refrigerator to Figure 23 73. Stopping at a R car at a consta 65. A Ship at Sea A ship at sea is due into a port 500.0 km level road. As due south in two days. However, a severe storm comes traffic light to in and blows it 100.0 km due east from its original The car's whe position. How far is the ship from its destination? In the car slides nag- what direction must it travel to reach its destination? is the coeffic ent tires and the 66. Navigation Alfredo leaves camp and, using a compass, walks 4 km E, then 6 km S, 3 km E, 5 km N, 10 km SECTION 3 Fo A is W, 8 km N, and, finally, 3 km S. At the end of two Mastering C B is 0 km days, he is planning his trip back. By drawing a dia- 74. Describe a gram, compute how far Alfredo is from camp and for dealing which direction he should take to get back to camp. up into th the 75. If a coord the SECTION 2 Friction x-axis po what sho Mastering Concepts y-axis? V 67. What is the meaning of a coefficient of friction that y-axis? measure it? 76. Explainse to subtia both graphical, 61. A hiker's trip consists of three segments. Path A is 66. N and A. walks 4 K is written 8.0 km long heading 60.0 north of east. Path B is W, 8 km used in vector 7.0 km long in a direction due east. Path C is 4.0 km days, he i long heading 315 counterclockwise from east. gram, Co sent? which di how is the angle or a. Graphically add the hiker's displacements in the with respect to the order A, B, C. b. Graphically add the hiker's displacements in the SECTION 2 order C, B, A. C. What can you conclude about the resulting Mastering then 45 km due displacements? 67. What is t? is greate 62. Two forces are acting on the ring in Figure 22. What is mponents of the the net force acting on the ring? 21. In all cases, 68. Cars U ive directions. textboc Tty road be tire? Ex 500.0 N 400.0 N Mastering 69. If you 40.0 E (5.0) 50.0 12.0-k Figure 22 + X veloci betwe D(4.0) 63. Space Exploration A descent vehicle landing on Mars 70. A 225 has a vertical velocity toward the surface of Mars 710 N of 5.5 m/s. At the same time, it has a horizontal velocity of 3.5 m/s. the a lowing pairs of a. At what speed does the vehicle move along its 71. A for descent path? 6.0 n b. At what angle with the vertical is this path? a. W C. If the vehicle is 230 m above the surface, how fa long until it reaches the surface? b. H C. W