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PRACTICE：Science 10 April 17 in-class Practice
本Practice试卷来源于https://webassign.org， 为试卷打印版，您也可以在网站平台(https://autodiscover.webassign.org/)直接 访问本试卷的在线电子版并查看正确答案与解析，搜藏保存任意题目到收藏集。 访问方法: 平台首页左上角"通过试卷号快速访问"输入试卷号 705，并点击直达试卷；或浏览器地址栏内直接输入本试卷链接 https://autodiscover.webassign.org/test705.html  教师使用本平台可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力。
 Author: cwphysics    Total: 34 Marks  Marks Earned: _____________

User Name: No Login  Start Time: 25年04月17日 08:15 End Time: 当月25日 09:35  Switch to: Whole-Paper Mode

Mark Problem
1#
 
Single-Choice ( 1.0 marks) (No. in Group 1/27) Whole-Paper View eid: 782  R:W 103:82  Correct Percent: 56%  Difficulty: *****  
试卷已过期，处于只读浏览模式，无法保存作答
第 1 题组 (共 27 题 27 分)
  Suppose that an object travels from oq m6tui/v ,+b k,yx)-e y2caepne point in space to another. Make a comparison between the d2 )k-eev/ac tbyqmu, +i py6x,isplacement and the distance traveled.

Correct Answer:    
Mark Problem
2#
 
Single-Choice ( 1.0 marks) (No. in Group 2/27) Whole-Paper View eid: 783  R:W 144:54  Correct Percent: 73%  Difficulty: *****  
试卷已过期，处于只读浏览模式，无法保存作答
  When is the average velocity of an object equal to the instaea0-hg)p .;u bxd/ exm qd:x -1evyxe:ntaneous velocity?

Correct Answer:    
Mark Problem
3#
 
Single-Choice ( 1.0 marks) (No. in Group 3/27) Whole-Paper View eid: 784  R:W 107:87  Correct Percent: 55%  Difficulty: *****  
试卷已过期，处于只读浏览模式，无法保存作答
  A new car manufacturer advertises that their carozi36qe 1 5mj8.cvno et9rhy;vt)oe7 can go "from zero to sixty in 8 s". This iv )9 6ov e oy.i157o3mt nzjhte;rqce8s a description of

Correct Answer:    
Mark Problem
4#
 
Single-Choice ( 1.0 marks) (No. in Group 4/27) Whole-Paper View eid: 785  R:W 123:61  Correct Percent: 67%  Difficulty: *****  
试卷已过期，处于只读浏览模式，无法保存作答
  An object moving in the +x axis experien :4,;ym +6wf1gsgay y04 (suleuklryy ces an acceleration of $2.0 \; m/s^2$. This means the object is

Correct Answer:    
Mark Problem
5#
 
Single-Choice ( 1.0 marks) (No. in Group 5/27) Whole-Paper View eid: 787  R:W 86:87  Correct Percent: 50%  Difficulty: *****  
试卷已过期，处于只读浏览模式，无法保存作答
  Suppose that a car traveling to the West (-x direction) begins to sl4lsb mn mc)d5ww/-m5v ow down as it approaches a traffic light. Make a stcm-m)sw 5 vnw4m/5ldbatement concerning its acceleration.

Correct Answer:    
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Mark Problem
6#
 
Single-Choice ( 1.0 marks) (No. in Group 6/27) Whole-Paper View eid: 788  R:W 136:53  Correct Percent: 72%  Difficulty: *****  
试卷已过期，处于只读浏览模式，无法保存作答
  Suppose that an object is yug.. xu 97rubrddvq,) gty:v11k 1lq moving with a constant velocity. Make a statement concerning its .gqyu.g)r1ky:q1t lv,ur9dx7u b1vd acceleration.

Correct Answer:    
Mark Problem
7#
 
Single-Choice ( 1.0 marks) (No. in Group 7/27) Whole-Paper View eid: 789  R:W 95:101  Correct Percent: 48%  Difficulty: *****  
试卷已过期，处于只读浏览模式，无法保存作答
  If the velocity of an98 snv;*r1 uflxzl iw4gp .zf( object is zero, does it mean that the acceleration is zero? Support your answerx(ir4u 8 9;lwpn 1fg sz.vzlf* with an example.

Correct Answer:    
Mark Problem
8#
 
Single-Choice ( 1.0 marks) (No. in Group 8/27) Whole-Paper View eid: 790  R:W 102:118  Correct Percent: 46%  Difficulty: *****  
试卷已过期，处于只读浏览模式，无法保存作答
  Can an object's velocity change direction when its acceleration g)4f4 ps5) 5y cbepz(1;6tjjqqwz ocxis constant? Support your answer with an e)445zoyjf6pg)qtzc cpb(5qws 1e j;x xample.

Correct Answer:    
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Mark Problem
9#
 
Single-Choice ( 1.0 marks) (No. in Group 9/27) Whole-Paper View eid: 791  R:W 118:68  Correct Percent: 63%  Difficulty: *****  
试卷已过期，处于只读浏览模式，无法保存作答
  Suppose that an object is moving wi0a /5vxmx pv1o9t*aj7vt + eptth constant acceleration. Make a statement concerning its motion with respect to ti 5+ vaoxp7 a0 xt/jvt9vtp1em*me.

Correct Answer:    
Mark Problem
10#
 
Single-Choice ( 1.0 marks) (No. in Group 10/27) Whole-Paper View eid: 792  R:W 100:102  Correct Percent: 50%  Difficulty: *****  
试卷已过期，处于只读浏览模式，无法保存作答
  Can an object have increasing speed while its acceleration is*aem-u0+qw0n hp9 l mh decreasing? Support your answer with an examplmuhq 9l-e0h *nm+p 0awe.

Correct Answer:    
Mark Problem
11#
 
Single-Choice ( 1.0 marks) (No. in Group 11/27) Whole-Paper View eid: 793  R:W 68:106  Correct Percent: 39%  Difficulty: *****  
试卷已过期，处于只读浏览模式，无法保存作答
  Suppose a can, after an initial kick, moves up awqt sqc( k-n.+long a smooth hill of ice. Make a statement concerning its accelw s-q(kqtnc. +eration.

Correct Answer:    
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Mark Problem
12#
 
Single-Choice ( 1.0 marks) (No. in Group 12/27) Whole-Paper View eid: 794  R:W 116:83  Correct Percent: 58%  Difficulty: *****  
试卷已过期，处于只读浏览模式，无法保存作答
  Under what condition is average velocity equal to the averagegh:q0h wo. f4esuc,4 n0vyc1t of the object's initty ccgh4 :0sf n,u1o.40q hwevial and final velocity?

Correct Answer:    
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Mark Problem
13#
 
Single-Choice ( 1.0 marks) (No. in Group 13/27) Whole-Paper View eid: 795  R:W 152:43  Correct Percent: 78%  Difficulty: *****  
试卷已过期，处于只读浏览模式，无法保存作答
  Objects A and B both start at rest. They both acceleusi qyfq;+7qtp3cq -:,zpwq6 rate at the same rate. However, object A accelerates for t 7qtpqw6:qzc p- qi+uq3f,ys;wice the time as object B. What is the final speed of object A compared to that of object B?

Correct Answer:    
本Practice题目来源于https://webassign.org，学生可刷题练习，扫右侧二维码或加微信xxxxxxxxxx，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
Mark Problem
14#
 
Single-Choice ( 1.0 marks) (No. in Group 14/27) Whole-Paper View eid: 822  R:W 148:29  Correct Percent: 84%  Difficulty: *****  
试卷已过期，处于只读浏览模式，无法保存作答
  An object moves 15.0 m north and then 11.0 m south. Find both the distance trve- --1vq23r*qj kdqry/ g)yzl i6 rysaveled and the magnitude of the displacement vey3v-livy / ge r-)qy2qjqsdkr- 1*r 6zctor.

Correct Answer:    
Mark Problem
15#
 
Single-Choice ( 1.0 marks) (No. in Group 15/27) Whole-Paper View eid: 823  R:W 106:59  Correct Percent: 64%  Difficulty: *****  
试卷已过期，处于只读浏览模式，无法保存作答
  A boat can move at 31t )s6 zdvkfl(6) lnvv,doburw 8,ad ,0 km/h in still water. How long will it take to move 12 km upstream in a river flowin1( w6) , sk86znd,vd,drfau )lotlbvvg 6.0 km/h?

Correct Answer:    
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Mark Problem
16#
 
Single-Choice ( 1.0 marks) (No. in Group 16/27) Whole-Paper View eid: 825  R:W 108:52  Correct Percent: 68%  Difficulty: *****  
试卷已过期，处于只读浏览模式，无法保存作答
  What must be your average speed in jdawfy w w1 +0c/c4ky+order to travel 350 km in 5.15 h?

Correct Answer:    
Mark Problem
17#
 
Single-Choice ( 1.0 marks) (No. in Group 17/27) Whole-Paper View eid: 826  R:W 130:60  Correct Percent: 68%  Difficulty: *****  
试卷已过期，处于只读浏览模式，无法保存作答
  A runner ran the marathon (approximahvmu8v;df7 bs)j5;syl .;chw ohh6 0htely 42.0 km) in 2 hours and 57 min. What is the averagel5jy;h fsvh)cv;h06h .umd s8whb;o 7 speed of the runner in m/s?

Correct Answer:    
Mark Problem
18#
 
Single-Choice ( 1.0 marks) (No. in Group 18/27) Whole-Paper View eid: 827  R:W 111:31  Correct Percent: 78%  Difficulty: *****  
试卷已过期，处于只读浏览模式，无法保存作答
  A car travels 90 km/h. How long does it take for it to travel 405c j0hqug7 fkts-de- zxn2-tq: 7,li r0 km?

Correct Answer:    
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Mark Problem
19#
 
Single-Choice ( 1.0 marks) (No. in Group 19/27) Whole-Paper View eid: 829  R:W 121:70  Correct Percent: 63%  Difficulty: *****  
试卷已过期，处于只读浏览模式，无法保存作答
  If you are driving 72 km/h along a straight road and you look to the ym,hg5, nrhq 4side for 4.0 sh h n,,4mqry5g, how far do you travel during this inattentive period?

Correct Answer:    
Mark Problem
20#
 
Single-Choice ( 1.0 marks) (No. in Group 20/27) Whole-Paper View eid: 830  R:W 78:148  Correct Percent: 35%  Difficulty: *****  
试卷已过期，处于只读浏览模式，无法保存作答
  If you run a complete loop around an outdoor track (400 m), in 100 s, your as ,3bn(g4dmut verage velocity isbd,s4t(n m3 gu

Correct Answer:    
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Mark Problem
21#
 
Single-Choice ( 1.0 marks) (No. in Group 21/27) Whole-Paper View eid: 831  R:W 91:93  Correct Percent: 49%  Difficulty: *****  
试卷已过期，处于只读浏览模式，无法保存作答
  A polar bear starts at the North Pole. It tra/ w4k1 zvido1kvels 1.0 km south, then 1.0 km east, then 1.0 km north, then 1.0 km west to return to its starting point. This t1dkk/i4vz1o wrip takes 45 min. What was the bear's average speed?

Correct Answer:    
Mark Problem
22#
 
Single-Choice ( 1.0 marks) (No. in Group 22/27) Whole-Paper View eid: 832  R:W 94:100  Correct Percent: 48%  Difficulty: *****  
试卷已过期，处于只读浏览模式，无法保存作答
  A polar bear starts at the North Pole. It travels 1.0 km south, theniy*d7t3is .set ))q 1w:)l xkg.lkcfj 1.0 km east, then 1.0 km north,cl *k.j3))tq1i lfs :igwt. )dskex7y then 1.0 km west to return to its starting point. This trip takes 45 min. What was the bear's average velocity?

Correct Answer:    
Mark Problem
23#
 
Single-Choice ( 1.0 marks) (No. in Group 23/27) Whole-Paper View eid: 833  R:W 123:73  Correct Percent: 63%  Difficulty: *****  
试卷已过期，处于只读浏览模式，无法保存作答
  You are driving home on a weekend from spi-2np/qu9duxx2 c *w chool at 55 mi/h for 110 miles. It then starts to snow and you slow to 35 mi/h. You arrive home after p2/wdx*u 9cuqp2 inx-driving 4 hours and 15 minutes. How far is your hometown from school?

Correct Answer:    
Mark Problem
24#
 
Single-Choice ( 1.0 marks) (No. in Group 24/27) Whole-Paper View eid: 834  R:W 102:77  Correct Percent: 57%  Difficulty: *****  
试卷已过期，处于只读浏览模式，无法保存作答
  A motorist travels 160 km at 80 km/h and 160 km at 100 km/h. What is the av bo0v20c) f1s7c6 o rbdif r97zyfn-d-t/qtwmerage speed of the motorist for this tripnc9 1c b07foftib/fsodrmzq 2- 7 -vryt w0)6d?

Correct Answer:    
Mark Problem
25#
 
Single-Choice ( 1.0 marks) (No. in Group 25/27) Whole-Paper View eid: 835  R:W 130:48  Correct Percent: 73%  Difficulty: *****  
试卷已过期，处于只读浏览模式，无法保存作答
  A motorist travels for 3 kq 9blbj /c0:e5hu:up.0 h at 80 km/h and 2.0 h at 100 km/h. What is her average speed for the tukl/: 90pb buhj5cq:erip?

Correct Answer:    
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Mark Problem
26#
 
Single-Choice ( 1.0 marks) (No. in Group 26/27) Whole-Paper View eid: 836  R:W 119:65  Correct Percent: 65%  Difficulty: *****  
试卷已过期，处于只读浏览模式，无法保存作答
  An airplane travels at 300 mi/h south for 2.00 h and then a ;yhwa*hoy lac c;::z:t 250 mi/h north for 7yl;zoc a*ycwh:: h;:a50 miles. What is the average speed for the trip?

Correct Answer:    
Mark Problem
27#
 
Single-Choice ( 1.0 marks) (No. in Group 27/27) Whole-Paper View eid: 837  R:W 105:66  Correct Percent: 61%  Difficulty: *****  
试卷已过期，处于只读浏览模式，无法保存作答
  In a 400-m relay race the anchorman (the person w9 fq,i iw4w q,;kr+t+6ptxjqlho runs the last 100 m) for team A can run 100 m in 9.8 s. His rival, the anchorman for team B, can cove ,r,;iw+fxt6qtq+ pj 9wi4klq r 100 m in 10.1 s. What is the largest lead the team B runner can have when the team A runner starts the final leg of the race, in order that the team A runner not lose the race?

Correct Answer:    
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Mark Problem
28#
 
Free-Response ( 1.0 marks) (No. in Group 1/7) Whole-Paper View eid: 10136  
试卷已过期，处于只读浏览模式，无法保存作答
第 2 题组 (共 7 题 7 分)
If one object has a greater speedf6 4-fy7amqa lm g,s8t,+jfo x than a second object, does the first necessarily have a greater acceleratio m,o+fsajg 6-7,f8 amfxt4qly n? Explain, using examples.
Correct Answer:    

Mark Problem
29#
 
Free-Response ( 1.0 marks) (No. in Group 2/7) Whole-Paper View eid: 10137  
试卷已过期，处于只读浏览模式，无法保存作答
Compare the acceleration of a motorcycle that accelerates from 80 km/h to l tbz bk48 ;c,soti7d490 km/h with the acceleration of a bicycle that accelerates fro8db4o ktstz,; 4li7 cbm rest to 10 km/h in the same time.
Correct Answer:    

Mark Problem
30#
 
Free-Response ( 1.0 marks) (No. in Group 3/7) Whole-Paper View eid: 10138  
试卷已过期，处于只读浏览模式，无法保存作答
Can an object have a northward velocity and a southward aa9*olt/d ukomq5o .7 scceleration? Explain.
Correct Answer:    

Mark Problem
31#
 
Free-Response ( 1.0 marks) (No. in Group 4/7) Whole-Paper View eid: 10139  
试卷已过期，处于只读浏览模式，无法保存作答
Can the velocity of an object be negativjqqd vy5v.l4 42xz hv9e when its accel- eration is positive? What about vice versa? If yes,25vqj 4h4 .vdyqlv9xz give examples in each case.
Correct Answer:    
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Mark Problem
32#
 
Free-Response ( 1.0 marks) (No. in Group 5/7) Whole-Paper View eid: 10140  
试卷已过期，处于只读浏览模式，无法保存作答
Give an example where both the velocity and acceleratxweqz 34 pyk/,ion are negative.
Correct Answer:    
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Mark Problem
33#
 
Free-Response ( 1.0 marks) (No. in Group 6/7) Whole-Paper View eid: 10141  
试卷已过期，处于只读浏览模式，无法保存作答
Can an object be increasi4qo01mqjw)pcuf1g a4 ng in speed as its acceleration decreases? If so, give an example. 4 au1pmq q1ocjw0g)f4 If not, explain.
Correct Answer:    

Mark Problem
34#
 
Free-Response ( 1.0 marks) (No. in Group 7/7) Whole-Paper View eid: 10142  
试卷已过期，处于只读浏览模式，无法保存作答
Two cars emerge side by side from a tunnel. Car A is traveling with bsq1c (m.o6ij*1vw jda speed of 60 km/h and has an acceleration of 40 km/h/min. Car B has a speed of 40 km/h aiv1(qdsb1mo w *6jjc. nd has an acceleration of 60 km/h/min. Which car is passing the other as they come out of the tunnel? Explain your reasoning.
Correct Answer:    
本Practice题目来源于https://webassign.org，学生可刷题练习，扫右侧二维码或加微信xxxxxxxxxx，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
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