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1 1 of 13 5/28/2008 7:46 AM Aignent Previewer Review #2 About thi Aignent Previewer Tool Show All In View: Hide All Cloe thi window Hidden: Aignent Score Mark Help/Hint Key Solution Show ew Randoization Reload fro Editor 1. SFHS99 2.P.09. [55755] Show Detail If you live 10.0 k fro your chool and the bu take 0.34 h to reach the chool driving due eat, what i the average velocity of the bu? k/h (eat) 2. SFHS99 2.P.10. [55756] Show Detail Figure 2-20 i the poition-tie graph for a quirrel running along a clotheline. Figure 2.20 (a) What i the quirrel' diplaceent during the tie interval fro t = 0.0 to t = 3.5? (b) What i the quirrel' average velocity during thi interval? / 3. SFHS99 2.P.15. [55760] Show Detail To qualify for the final in a racing event, a race car ut achieve an average peed of 230 k/h on a track with a total length of If a particular car cover the firt half of the track at an average peed of 217 k/h, what iniu average peed ut it have in the econd half of the event to qualify? k/h 4. SFHS99 2.P.17. [55762] Show Detail Runner A i initially 6.0 k wet of a flagpole and i running with a contant velocity of 3.5 k/h due eat. Runner B i initially 7.0

2 2 of 13 5/28/2008 7:46 AM k eat of the flagpole and i running with a contant velocity of 4.5 k/h due wet. How far are the runner fro the flagpole when their path cro? k wet of the flagpole eat of the flagpole 5. SFHS99 2.P.23. [55764] Show Detail A car traveling at 7.0 / accelerate at the rate of 0.8 / 2 for an interval of 3.0. Find v f. / 6. SFHS99 2.P.24. [55765] Show Detail A nowobile ha an initial velocity of 3.0 /. (a) If it accelerate at the rate of 0.5 / 2 for 5.0, what i the final velocity? / (b) If, intead of accelerating a in part (a), it accelerate at the rate of -0.4 / 2, how long will it take to reach a coplete top. 7. SFHS99 2.P.26. [55767] Show Detail A ball initially at ret roll down a hill with an acceleration of 3.3 / 2. If it accelerate for 6.5, how far will it ove? 8. SFHS99 2.P.30. [55771] Show Detail A car tart fro ret and travel for 8.0 with a unifor acceleration of +1.5 / 2. The driver then applie the brake, cauing a unifor acceleration of -2.0 / 2. If the brake are applied for 2.0, how fat i the car going at the end of the braking period? / How far ha it gone fro it tart? 9. SFHS99 2.P.35. [55775] Show Detail A plane land with a velocity of 100 / and accelerate at a axiu rate of -4.0 / 2. (a) Fro the intant the plane touche the runway, what i the iniu tie needed before it can coe to ret?

3 3 of 13 5/28/2008 7:46 AM (b) Can thi plane land on a naval aircraft carrier where the runway i 1.05 k long? inufficient inforation no ye What i the iniu ditance the plane need to land? k 10. SFHS99 2.P.40. [55776] Show Detail A worker drop a wrench fro the top of a tower 88.0 tall. With what velocity doe the wrench trike the ground? (Aue the poitive direction i upward.) / 11. SFHS99 2.P.41. [55777] Show Detail A phyic tudent throw a oftball traight up into the air. The ball wa in the air for a total of 5.96 before it wa caught at it original poition. (a) What wa the initial velocity of the ball? / (b) How high did it rie? 12. SFHS99 2.P.44. [55780] Show Detail A ball thrown vertically upward i caught by the thrower after 6.0. (a) Find the initial velocity of the ball. / (upward) (b) Find the axiu height it reache. 13. SFHS99 2.P.46. [55782] Show Detail A ball i thrown upward fro the ground with an initial peed of 21 /. At the ae intant, a ball i dropped fro ret fro a building 13 high. After how long will the ball be at the ae height? 14. SFHS99 2.P.62. [55797] Show Detail

4 4 of 13 5/28/2008 7:46 AM A odel rocket i launched traight upward with an initial peed of 50.0 /. It accelerate with a contant upward acceleration of 5.0 / 2 until it engine top at an altitude of 150. (a) What i the axiu height reached by the rocket? (b) How long into the flight doe the rocket reach axiu height? (c) How long i the rocket in the air? 15. SFHS99 3.P.29. [57771] Show Detail A peron walk the path hown in Figure The total trip conit of four traight-line path. At the end of the walk, what i the peron' reultant diplaceent eaured fro the tarting point? Let L = 280.0, and let θ = 60.0 Figure 3.27 Magnitude Direction (counterclockwie fro the peron' initial direction) 16. SFHS99 3.P.34. [57772] Show Detail The fatet recorded pitch in Major League Baeball, thrown by olan Ryan in 1974, wa clocked at k/h (100.8 i/h). If a pitch were thrown horizontally with thi velocity, how far would the ball fall vertically by the tie it reached hoe plate, 18.3 (60.0 ft) away? 17. SFHS99 3.P.36. [57774] Show Detail

5 5 of 13 5/28/2008 7:46 AM A peron tanding at the edge of a eaide cliff kick a tone over the edge with a peed of v i = 21 /. The cliff i h = 52 above the water' urface. How long doe it take for the tone to fall to the water? With what peed doe it trike the water? / Figure SFHS99 3.P.43. [57781] Show Detail A py in a peed boat i being chaed down a river by governent official in a larger craft. If the py travel at 28 / and the official travel at a peed of 16 /, how far fro each other will the two veel land after they fly off a 5.0 waterfall? 19. SFHS99 3.P.37. [57775] Show Detail A daredevil i hot out of a cannon at 45.0 to the horizontal with an initial peed of 24.0 /. A net i poitioned a horizontal ditance of 50.0 fro the cannon. At what height above the cannon hould the net be placed in order to catch the daredevil? 20. SFHS99 3.P.38. [57776] Show Detail A place kicker ut kick a football fro a point 36.0 (about 40.0 yd) fro the goal, and the ball ut clear the crobar, which i 3.05 high. When kicked, the ball leave the ground with a peed of 30.0 / at an angle of 45 to the horizontal. (a) By how uch doe the ball clear or fall hort of the crobar? (Give a poitive anwer if the ball clear the crobar, or a negative anwer if it fall hort of the crobar.) (b) Doe the ball approach the crobar while till riing or while falling? (Type 'riing' or 'falling', or 'neither' if it fall hort of the crobar.) What i the vertical coponent of velocity of the ball at thi tie? (Aue the poitive direction i upward.) /

6 6 of 13 5/28/2008 7:46 AM 21. SFHS99 3.P.44. [57782] Show Detail A hip aneuver to within 2500 of an iland' 1800 high ountain peak and fire a projectile at an eney hip 610 on the other ide of the peak, a illutrated in Figure If the hip hoot the projectile with an initial velocity of v = 262 / at an angle of θ = 76, how cloe to the eney hip doe the projectile land? How cloe (vertically) doe the projectile coe to the peak? Figure SFHS99 3.P.56. [57784] Show Detail A ball i thrown traight upward and return to the thrower' hand after 5.00 in the air. A econd ball i thrown at an angle of 35.0 with the horizontal. At what peed ut the econd ball be thrown o that it reache the ae height a the one thrown vertically? / 23. SFHS99 3.P.63. [57791] Show Detail A golf ball with an initial angle of 36 land exactly 240 down the range on a level coure. (a) eglecting air friction, what initial peed would achieve thi reult? / (b) Uing the peed deterined in ite (a), find the axiu height reached by the ball. 24. SFHS99 3.P.70. [57797] Show Detail A rocket i launched at an angle of 53 above the horizontal with an initial peed of 75 /, a hown in Figure It ove for 29 along it initial line of otion with an acceleration of 29 / 2. At thi tie it engine fail and the rocket proceed to ove a a free body.

7 7 of 13 5/28/2008 7:46 AM Figure 3.31 (a) What i the rocket' axiu altitude? (b) What i the rocket' total tie of flight? (c) What i the rocket' horizontal range? 25. SFHS99 3.P.55. [57783] Show Detail A otorboat head due eat at 13 / acro a river that flow toward the outh at a peed of 3.2 /. (a) What i the reultant velocity relative to an oberver on the hore? Magnitude / Direction (counterclockwie fro eat) (b) If the river i 1360 wide, how long doe take the boat to cro? 26. SFHS99 3.P.57. [57785] Show Detail An ecalator i 20.0 long. If a peron tand on the ecalator, it take 44.0 to ride fro the botto to the top. (a) If a peron walk up the oving ecalator with a peed of / relative to the ecalator, how long doe it take the peron to get to the top? (b) If a peron walk down the "up" ecalator with the ae relative peed a in ite (a), how long doe it take to reach the botto? 27. SFHS99 3.P.59. [57787] Show Detail

8 8 of 13 5/28/2008 7:46 AM How long, in econd, doe it take an autoobile traveling 70.0 k/h to becoe even with a car that i traveling in another lane at 40.0 k/h if the car' front buper are initially 120 apart? 28. SFHS99 3.P.60. [57788] Show Detail The eye of a hurricane pae over Grand Bahaa Iland. It i oving in a direction 60.0 north of wet with a peed of v 1 = 44.0 k/h. Exactly three hour later, the coure of the hurricane hift due north, and it peed low to v 2 = 24.0 k/h, a hown in Figure How far fro Grand Bahaa, in kiloeter, i the hurricane 4.50 h after it pae over the iland? k Figure SFHS99 3.P.62. [57790] Show Detail A boat ove through a river at 8.0 / relative to the water, regardle of the boat' direction. If the water in the river i flowing at 3.0 /, how long doe it take the boat to ake a round trip coniting of a 250 diplaceent downtrea followed by a 250 diplaceent uptrea? 30. SFHS99 4.P.10. [57807] Show Detail Four force act on a hot-air balloon with F 1 = 1640 and F 2 = 5080, hown fro the ide in Figure Find the agnitude and direction of the reultant force on the balloon. (counterclockwie fro the horizontal)

9 9 of 13 5/28/2008 7:46 AM Figure SFHS99 4.P.12. [57809] Show Detail A dog pull on a pillow with a force of 11 at an angle of 10 above the horizontal. Find the x and y coponent of thi force. ( x coponent) ( y coponent) 32. SFHS99 4.P.23. [57813] Show Detail A freight train ha a a of kg. If the locootive can exert a contant pull of , how long would it take to increae the peed of the train fro ret to 85 k/h? 33. SFHS99 4.P.24. [57814] Show Detail A 8 kg bucket of water i raied fro a well by a rope. If the upward acceleration of the bucket i 2.2 / 2, find the force exerted by the rope on the bucket of water. 34. SFHS99 4.P.48. [57827] Show Detail A 24 kg block i in equilibriu on an incline of angle θ = 50. Find F n of the incline on the block. 35. SFHS99 4.P.50. [57829] Show Detail Find the force exerted by each cable to upport the 670 bag in Figure 4-32.

10 10 of 13 5/28/2008 7:46 AM the right cable the left cable Figure SFHS99 4.P.51. [57830] Show Detail A box of book weighing 209 i hoved acro the floor by a force of 485 exerted downward at an angle of 35 below the horizontal. (a) If µ k between the box and the floor i 0.57, how long doe it take to ove the box 10, tarting fro ret? (If the box will not ove, enter 0.) (b) If µ k between the box and the floor i 0.75, how long doe it take to ove the box 8, tarting fro ret? (If the box will not ove, enter 0.) 37. SFHS99 4.P.52. [57831] Show Detail A 88 kg clock initially at ret on a horizontal floor require a 655 horizontal force to et it in otion. After the clock i in otion, a horizontal force of 556 keep it oving with a contant peed. Find µ Find µ k between the clock and the floor. 38. SFHS99 4.P.53. [57832] Show Detail A box lide down a 31.5 rap with an acceleration of 1.27 / 2. Deterine the coefficient of kinetic friction between the box and the rap.

11 11 of 13 5/28/2008 7:46 AM 39. SFHS99 4.P.55. [111286] Show Detail A clerk ove a box of can down an aile by pulling on a rope attached to the box. The clerk pull with a force of 185 at an angle of 25.0 with the horizontal. The box ha a a of 35.9 kg, and the coefficient of kinetic friction between box and floor i Find the acceleration of the box. / SFHS99 4.P.56. [57835] Show Detail A car i traveling at 50.8 k/h on a flat highway. (a) If the coefficient of friction between the road and the tire on a rainy day i 0.100, what i the iniu ditance needed for the car to top? (b) What i the topping ditance when the urface i dry and the coefficient of friction i 0.600? 41. SFHS99 4.P.57. [57836] Show Detail A 4.6 kg block i puhed along the ceiling with a contant applied force of 85 that act at an angle of 55.0 with the horizontal, a in Figure The block accelerate to the right at 6.00 / 2. Deterine the coefficient of kinetic friction between the block and the ceiling. Figure SFHS99 4.P.61. [57840] Show Detail The coefficient of tatic friction between the 14 kg crate and the 35.0 incline of Figure 4-34 i 0.3. What i the iniu force, F, that ut be applied to the crate perpendicular to the incline to prevent the crate fro liding down the incline?

12 12 of 13 5/28/2008 7:46 AM Figure SFHS99 4.P.28. [57818] Show Detail A block with a a of 20 kg i held in equilibriu on an incline of angle θ = 30.0 by the horizontal force, F, a hown in Figure Find the agnitude of F. Find the noral force exerted by the incline on the block. (Diregard friction.) Figure 4.31 Subit for Teting Aignent Detail: ( Hide ) ae (AID) Review #2 Subiion Allowed 5 Category Hoework Code Locked o Author Rawon, Alex ( arawon@theaterchool.co ) Lat Saved Periion Randoization Which graded Protected Peron Lat Feedback: Detailed grade with reubit allowed Before due date After due date Save Work Repone Repone Aignent Score Aignent Score Quetion Score Quetion Score Quetion Part Score Quetion Part Score Mark

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