题库网 (tiku.one)

 找回密码
 立即注册

 

      

上传图片附件

未使用图片

小贴士: 允许的图片文件格式为: gif, jpg, jpeg, png, webp,上传完成后会在上方生成预览,用鼠标连续双击缩略图,或拖动缩略图,该图片就被绑定至本题,显示在题目下方

本次作答已使用

小贴士: 此栏目显示的是当前作答使用的所有图片,绑定到某一题目的图片同时会显示在该题目下方; 删除使用的图片会将其转移到<未使用图片>类别


习题练习:Physics Bowl by Topic 2: Kinematics - part I General Motion

 作者: admin   总分: 72分  得分: _____________

答题人: 游客未登录  开始时间: 24年03月31日 09:50  切换到: 整卷模式

标记此题
1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.10: A particle traves6k vabp ,q)c fxa(k*ixlct7 835tc2 wls at a constant speed around a circular path of radius $R$, if the particle makes one complete trip around the entire circle, what is the magnitude of the displacement for this trip?

参考答案:    

标记此题
2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.01: The change of distance per unit time without refermtx*p01(r pqn ence to a particular direction is calledp0t 1 xpm*n(qr

参考答案:    

标记此题
3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  12.29: A vehicle completes one lap around a circular track at an ave6 jpzeqh:m(qp0i)d7 ,jk )hograge speed of 50 m/s and then completes a second lap at api0oq jzehq)jm)pgh 76d(k:,n average speed of $V$. The average speed of the vehicle for the completion of both laps was 80 m/s. What was the average speed $V$ of the second lap?

参考答案:    

标记此题
4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  95.03: A toy car moves 0.80 m in 1.0 s at the consta.vbf 4o r/o3fhq7 :jglnt velocity. If it continues, how far will it travel in 3.0 sr.bv:3 /o jho4q7flf g?

参考答案:    

标记此题
5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  05.34: A 40-kg boy is stationary on a 30-kg plank m8gohgzx;oj+i66e*6 cu j*m4js8es ythat is sliding at 5.00 m/s to the rigo4je 8m6eosc6**;u6jsg8hji gzx+ m yht across a frictionless pond. The boy then turns and starts walking on the plank at a rate of 4.00 m/s to the left, relative to the plank. What is the speed of the plank relative to the pond now?

参考答案:    

标记此题
6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.18: A motorist travels 4u4ekf, /v, dk 5nsvww600 km at 80 km/h and 400 km at 100 km/h. What is the average speed of the mo5fe, /6wv ,unwds4kvktorist on this trip?

参考答案:    

标记此题
7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.20: This question refers to the motion of a toy car traveling along the x-3kdo a.3py4j i(ug+3qftwf1 vaxis. The graph shown below is a4+gv3ud1y .3qtk pjoifa 3fw( plot of the car’s velocity in the x direction, $v_x$ versus time $t$.
During what time interval was the car moving towards its initial position at constant velocity?


参考答案:    

标记此题
8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.21: This question refers to tod(mm2i.r r /phe motion of a toy car traveling along the x-axis. The graph shown below is a plot of the car’s r.d2pmr(mio / velocity in the x direction, $v_x$ versus time $t$.What was the acceleration at 33 s?


参考答案:    

标记此题
9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.22: This question refers to the motion of a to+ u1fhf:e ii5 d;s1fqvz.3gv ig 0w-rty car traveling along the x-axis. The graph shown below fvu;wi tg+qhed. zr51ffsi31-: 0gvi is a plot of the car’s velocity in the x direction, $v_x$ versus time $t$.
How far did the car travel during the first 15 seconds?


参考答案:    

标记此题
10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.15: Given the graph of the velocity vs. time of a duck f1rc 4 kgu.y(v0e/dkvbc 2 iig5lying due south for the winter. At what pointbv ic4. iyc5reg(k/d01g k uv2 did the duck stop its forward motion?





参考答案:    

标记此题
11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.17: This question refer to the diagram below which shoh v7( msca4/eyws the position and elapsed time of a car starting from rest and uniformly accelv m4e(/hasc7 yerating in a straight line. What was the average velocity of the car during the third second?


参考答案:    

标记此题
12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.18: This question refer to the diagr;rwxz*ui8ix aserjan7 29r *,fp2 bl9am below which shows the position and elapsed time of a car a9 jpr92fs8e*i; nx7wlzrba , ir*ux2starting from rest and uniformly accelerating in a straight line. The average acceleration during the entire 3 second interval is closest to


参考答案:    

标记此题
13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.20: What is the shape of the velocity time g yj3w:6zb qx0-1fhlulraph for an object with the position time graph shown in the diay :b3zj lwf016uq lx-hgram at right?


参考答案:    

标记此题
14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  00.28: The following question /kfq4-n 0t lvrrefer to the following information. An ideal elastic rubber ball is dr kvn-f/0t 4qrlopped from a height of about 2 meters, hits the floor and rebounds to its original height.
Which of the following graphs would best represent the distance above the floor versus time for the above bouncing ball?


参考答案:    

标记此题
15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  00.29: The following question refer to the following ixj4cn lp vv/86nformation. An ideal elastic rubbjn68/xlvcv p4er ball is dropped from a height of about 2 meters, hits the floor and rebounds to its original height.
Which of the following would best represent acceleration versus time for the bouncing ball?


参考答案:    

标记此题
16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  00.39: If a boat can e2y y4rjdrsl k18j16atravel with a speed of $v$ in still water, which of the following trips will take the least amount of time.

参考答案:    

标记此题
17#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.01: The question refers o(2gpu 1zalf8td //y bto the following scenario: At $t_0$, two cars moving along a highway are side-by-side as they pass a third car stopped on the side of the road. At this moment the driver of the first car steps on the brakes while the driver of the stopped car begins to accelerate. The diagram below show the positions of each car for the next 5 seconds.
During which time interval would cars #2 and #3 be moving at the same average speed?


参考答案:    

标记此题
18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.02: The question refers to7 lb*+qhw2js-9oe4s6m gsck2 1e2wk d5kqe ww the following scenario: At $t_0$, two cars moving along a highway are side-by-side as they pass a third car stopped on the side of the road. At this moment the driver of the first car steps on the brakes while the driver of the stopped car begins to accelerate. The diagram below show the positions of each car for the next 5 seconds.
About what position after $t_0$ would car #1 and car #2 have been side by side?


参考答案:    

标记此题
19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.03: The question refers to the follow o(;-t s.ego8blzq,4cwkc w0k ing scenario: At $t_0$, two cars moving along a highway are side-by-side as they pass a third car stopped on the side of the road. At this moment the driver of the first car steps on the brakes while the driver of the stopped car begins to accelerate. The diagram below show the positions of each car for the next 5 seconds.
Which of the three cars had the greatest average speed during these 5 seconds?


参考答案:    

标记此题
20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.04: The question refers to the y9gap*44jg/wijti( m following scenario: At $t_0$, two cars moving along a highway are side-by-side as they pass a third car stopped on the side of the road. At this moment the driver of the first car steps on the brakes while the driver of the stopped car begins to accelerate. The diagram below show the positions of each car for the next 5 seconds.
If car #3 continues to constantly accelerate at the same rate what will be its position at the end of 6 seconds?


参考答案:    

标记此题
21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.33: A small ball rolls down a ramp, across a horizont2 c3mhelya5o9al table top and off the table edge. Which of the following would best represent a graph of the magnitude of the ball's acceleration v5hya cl mo3e92s time?


参考答案:    

标记此题
22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.01: The graph represents the re)xv)mn,8 op p7fzvce 0lationship between distance and time for an object that is moving z)fcv8) ,nxo7pvepm0along a straight line. What is the instantaneous speed of the object at t = 5.0 seconds?


参考答案:    

标记此题
23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.02: The graph represents the rey ( mard pg7he4j d7bi-d+kno-0e ,l.rlationship between distance and time for an object that is moving along a straight line. Between whdgk(nl4 0edhbd. i eroy-p+, a77j r-mat times did the object have a non-zero acceleration?


参考答案:    

标记此题
24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.07: A small object is thrown straight downward on Earth with an initial jo n+*dj iz-*la2bj 4aspeed of 12.0 m/s from a position 1a*o 42jjl- badn zj*i+0.0 m above the ground. Ignoring air resistance, the speed of the object when it reaches the ground is

参考答案:    

标记此题
25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.11: The diagram below represents a toy car starting from rest andlm g55+zr 8nxoy7qz .ojg3-m j uniformly accelerating across the floor. The time and distance traveled from the start are shoo57zngojxl 85 z+rm. qg- j3ymwn in the diagram.
What was the average speed of the cart between 0.1 seconds and 0.3 seconds?


参考答案:    

标记此题
26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.12: The diagram below repres8n1k5 n9 jx-4iimkgi z i3e(i 8 rqlcph5ctw;,ents a toy car starting from rest and uniformly accelerating across the floor. The time and distance traveled from the start , n p3jix15n8m5r izc lh9;8ew itq(kcik-4g iare shown in the diagram.
What was the acceleration of the cart during the first 0.4 seconds?


参考答案:    

标记此题
27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.13: The diagram below represents a toy car starting from ren:051fqfdijn st and uniformly accelerating across the floor. The time and distance traveled frjd5f:fn 1i0qn om the start are shown in the diagram.
What was the instantaneous velocity of the cart at 96 centimeters from the start?


参考答案:    

标记此题
28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  04.08: The diagram shows a uniformly accelerating ball. The positiof p+ 02ailee4ev7tggxtzh3 r3;fev64 n of the ball each sec i vf4ez23aetg0vl6th pg x7fe;+r4e3ond is indicated.
What is the average speed of the ball between 3 and 4 seconds?


参考答案:    

标记此题
29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  04.09: The diagram shows a uniformly acceleratingw9egz84vr0 g8;z5kkc v y4fcv ball. The position of the ball ea rzcgcveg z5vk48 k;w8 40vyf9ch second is indicated.
Which of the following is closest to the acceleration of the ball?


参考答案:    

标记此题
30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.17: The motion of a circus clown on a unicycle moving in ,imj 89sr:s 3 ccwpv:da straight line is shown in t3s:mcji d,vsw: 89rcphe graph below.
What would be the acceleration of the clown at 5 s?


参考答案:    

标记此题
31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.18: The motion of a circus clown on a unicycle moving in a c0y k*gtj7es( straight line is shown in gcsy(k0 *e7 jtthe graph below.
After 12 seconds, how far is the clown from her original starting point?


参考答案:    

标记此题
32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.04: When an object falls freely in a vacuum near the suv6-+7t9p lazms ,xxi,yv3 c wprface of the earth

参考答案:    

标记此题
33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.11: The accompanying graph describes thbce 4* w/)dcu 4:pxsxre motion of a marble on a table top forc wrxxs4p4be)/du*c: 10 seconds. For which time interval(s) did the marble have a negative velocity?


参考答案:    

标记此题
34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.12: The accompanying graph describes the motion of a marble on a table t.zw4 h1pb3+bvt6qv(j d/ ogoqop for 10 seconds. For which time interval(s) did the marble have a poq.4+ t 6p(ovh/j b3bodvgq1zwsitive acceleration?


参考答案:    

标记此题
35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.13: The accompanying graph describes the motion of a marble on a table top+,me zt29 xuiq for 10 seconds. What is the marbles average acceleration between t = 3.3 s and t = 3.8 meui +2t9x,qzs


参考答案:    

标记此题
36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.20: A car accelerates uniformly fro,;cjcmgy e iy:o7 9h nxo67nn/m rest for a time of $2.00\;s$ through a distance of $4.00\;m$. What was the acceleration of the car?

参考答案:    

标记此题
37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.06: An object, thra6q +48/fj5o lcv )pq-glwcjrown straight downward with a speed of $20.0\;m/s$, takes $2.00\;s$ to reach the ground below. From what height above the ground was the object thrown? Ignore air resistance.

参考答案:    

标记此题
38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  04.03: Which of the following graphs could correctly kq8,flwsemkp1 2r0 l/represent the motion of an objecr/1q ,m02sp 8kfklwlet moving with a constant speed in a straight line?


参考答案:    

标记此题
39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.24:The accompanying graph de)thm03 9 (vcrxnw+vc escribes the motion of a toy car across the floor formxnt)9(rc v30 +wehv c 10 seconds. What is the acceleration of the toy car at t = 4 s?


参考答案:    

标记此题
40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.25:The accompanying graph describes the motion of a toy car across qnt kxyg2 +cj:*e 47gvthe floor for 10 seconds. What was the total displacement of the toy car+g7vxt:*4j2y nce kgq for the entire 10 second interval shown?


参考答案:    

标记此题
41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.26:The accompanying graphd15)) s*nur0ame7c j vfbfp8k describes the motion of a toy car across the floor for ))a 1fvjb7m*rdp scn85u0 kfe10 seconds. At what times or time intervals must the net force on the toy car be zero?


参考答案:    

标记此题
42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.03: A car accelerates uniformly from 0 km/hr to 60 km/)1k/fwhhq6 pnr /s/z shr in 4.50 s. Which one of the following choices best represents the acceleration of the1 r ph /6)snqsw/z/fkh car?

参考答案:    

标记此题
43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  06.07: A car has the velocity versus time cu 4v77xgn l*rperve shown. Which of the following statemxe7np r*4 7lvgents regarding its motion is NOT CORRECT?


参考答案:    

标记此题
44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.17: A toy car moves along the x-axis accordics2yo25 q:p+kheeu :z ng to the velocity versus time curve shown to the right. When does the car q:s:zeuh +p okc2 5ye2have zero acceleration?


参考答案:    

标记此题
45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  06.22: During an interval of timew9m)ynv neqy7:9h sd., a tennis ball is moved so that the angle between the velocity and the acceleration of the ball is kept at a constant 120 degree. Which statement is true about the tennis ball during this interv)yn7q:9y. m 9neswvdhal of time?

参考答案:    

标记此题
46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.03: Two automobiles are 150 kilometersmz ,) 0ne+x9 zbg9jfal apart and traveling toward each other. 9n0 xf+a)j,mg blz9ez
is moving at 60 km/h and the other is moving at 40 km/h. In how many hours will they meet?

参考答案:    

标记此题
47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.04: A particle moves on the x-axis. When the acceleration is pob m(/. vwa6 63fkoosvqsitive and increasingmqok3s a 6vfo/ w(6vb.

参考答案:    

标记此题
48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.12: The definition of average nk:27vsi 6icx49pcipi,0 ijdvelocity is

参考答案:    

标记此题
49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.18: For any motion in two dimensions, which one of the following chov7fiq8: 0fju m7mh :nwices identifies quantities that must have tf8injmf 77:h0quw mv: he same direction?

参考答案:    

标记此题
50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  09.17: A toy car move7vgle6vt w) bs/wt/jh-1ift )s $3.0\;m$ to the North in 1 second. The car then moves at $9.0\;m/s$ due South for 2 seconds. What is the average speed of the car for this three second trip?

参考答案:    

标记此题
51#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.05: The position-ti6li gjjft11 jtqo n3:)me, $y\;vs\;t$, graph for the motion of an object is shown. What would be a reasonable equation for the acceleration that would account for this motion?


参考答案:    

标记此题
52#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  09.31: A car moves to the riiycj;dc0 h 9dm,c3/nsght along a one-dimensional track for total time T in two pard,c;s /3mcc9 ny i0hdjts.
• Part One: The car maintains constant non-zero speed V for the first $\frac{3}{4}$ of the total time.
• Part Two: The car accelerates uniformly to rest during the last $\frac{1}{4}$ of the total time.
What is the ratio of the distance traveled during Part One of the trip to the distance traveled during Part Two of the trip?

参考答案:    

标记此题
53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  08.23: The velocity vs. time graph for the motion of a ca+8f t-bffoh)es 23mogr on a straight track is shown in the diagram. The thick line represents the veloci3o ) +fhfe bg2-sm8tofty. Assume that the car starts at origin $x=0$. At which time is the car the greatest distance from the origin?


参考答案:    

标记此题
54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  08.24: The velocity vs. time grmj-z 5w9-:fr-y xdi.12 vusp8xh xheyaph for the motion of a car on a straight track is shown in the diagram. i r-1p5- jxm2zw y-ysx8u exdh:.9vfhThe thick line represents the velocity. Assume that the car starts at origin $x=0$. What is the average speed of the car for the 10 second interval?


参考答案:    

标记此题
55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  09.08: Consider the motio-) us3a:zdddp1tsc xms+*+g ln of an object given by the position vs. time graph shoz) s1msx +dd3:tuc +*-pgasdlwn. For what time(s) is the speed of the object greatest?


参考答案:    

标记此题
56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.11: Consider the motion of an object given by the velocity vs. 9w ,,grk -wc8xwxz8zw time graph shown. For which time(s) is the acceleration of the objewwgxkxw z-cz, 8r,8 9wct equal to 0?


参考答案:    

标记此题
57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.24: By computing the area under the accelera1)eiz z8lks3f tion vs. time graph for a fixed time interval of an o3z8k)e lizf1s bject’s motion, what quantity has been determined for that object?

参考答案:    

标记此题
58#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  11.08: An object movesrb wqwp830*ny along a horizontal line with increasing speed.
choices could represent the signs of the velocity and of the acceleration for the object to achieve this motion?

参考答案:    

标记此题
59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  11.14: A car makes a trip in t 9whmmbtz5d;j8uh5p 4 wo parts:
Part 1: it travels a distance of 800 m at a constant speed of 4.0 m/s.
Part 2: it travels a distance of 1200 m at a constant speed of 20.0 m/s.
What is the average speed of the car for the entire two-part trip?

参考答案:    

标记此题
60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.02:A small object is released from. v,ryz: c21 gqpljp,v rest and reaches the ground in a time of $2.50\;s$. Neglect air resistance. With what speed does the object reach the ground?

参考答案:    

标记此题
61#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.03:A small object is released from rest and reaches the grounek)6hr f)ng;l d in a time of $2.50\;s$. Neglect air resistance. From what height above the ground was the object released?

参考答案:    

标记此题
62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.17: A position vs. time graph of a particle mo -hosf6ot) )xxpxajw 0lo3* k7fp52zoving along a horizontal axis is shown. What is the total distance traveled x h)s)xw2 5a-o fp*op7f6to 3 xokjz0lby the particle from t=0 to t=10s ?


参考答案:    

标记此题
63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.18: Which one of the fo e3 e.60cqox(b jjo:jmllowing choices correctly identifies all of the listed situations for which ther :jj3eqo.bm6o jx0c( ee is a non-zero acceleration?
Situation I : A point object moves in a straight line with increasing speed.
Situation II : A point object moves in a circular path with constant speed.
Situation III: A point objects moves in a circular path with decreasing speed.

参考答案:    

标记此题
64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.32: An acceleration vs. time graph for an object moving agol necghi59gg nn+v2p9l 2//long a line is shown. The object starts from rest at time t=0 s. At what time(s) does the objec g/ 2v9hgo gg 5in/clnnl9pe2+t attain a maximum displacement from its starting position?


参考答案:    

标记此题
65#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.17: An object starts at the origin and its velocity c5ziykakfehkbh (gl, 5s+)* 7along a line vs. time is graphed. Which one of the following choices best gives the proper interval(s) of time for which the object is moving away from the ohsei*5ckaf 7gz)+hy k(l ,kb5 rigin?


参考答案:    

标记此题
66#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.09: Two cars are mke +wfw(,5mddhd-b-7km eli5 oving to the right on a horizontal track, each with constant acceleration. At an instant of time, the inf-w5k(l5 7f-+dmeeb wmih dkd,ormation about the cars is shown:
Car #1: position = 125.0 m; velocity = 13.0 m/s; constant acceleration = $1.5\;m/s^2$
Car #2: position = 80.0 m; velocity = 9.30 m/s; constant acceleration = $5.5\;m/s^2$
During the next 1.0 second of motion, which one of the following choices best represents what happens to the distance between the cars?

参考答案:    

标记此题
67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.14: A particle has a posiytq9,b ;8uuawz m8qogr7t f(qj +-;uwtion $x$, as a function of time $t$, given as $x(t) = -15 - 25t + 10t^2$. Which one of the following choices represents the magnitude of the particle’s acceleration? All quantities are expressed in base SI units.

参考答案:    

标记此题
68#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.41: For the entire time shown in the graph, wyyb /x-ws1o)vxwb96 g3+z p.w1fz gojhich one of the following choices correctly describes the relationx sw6y9g y/j.bvo 3w)o1zzpwf-x+b1g ship between the average speed of the truck to that of the car?


参考答案:    

标记此题
69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.42: Which one of the following choices bestnx1n3 j ev.m9f describes the instants of time, at which v9 nf3 n1mxej.the car and truck travel with the same speed?

参考答案:    

标记此题
70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.30: Two cars P and Q, each s( afix9- kvv;ypm43 oytart from rest at the origin and will move along the x-axis. The acceleration vs. time graph for each car is shown. Which m;( pvx4yo9k ya v3i-fone of the following choices correctly identifies the relationship for both the speeds $v$ and the positions $x$ of the cars at time T?


参考答案:    

标记此题
71#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.02: The position vs. time grap, +, tv0v rfzva5ofn2bh of an object moving on a horizontal line is sho , ofbzv2t0+vfv5na, rwn. At what time(s) is the object moving with its greatest speed?


参考答案:    

标记此题
72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.08: A mass moves along the x-axis foll; m+d;smnrq6lowing the position vs. time graph provided. During what time interval(s) does the mass have zero accelqdnlm;sm + 6r;eration?


参考答案:    

总分:72分 及格:43.2分 时间:不限时
未答题: 已答题:0 答错题:
当前第 题,此次习题练习共有 72 道题
本平台(https://tiku.one/)支持练习,作业与考试(自动评分)三种模式,群组成绩统计排序导出,题目动态变量实现同卷千人千题
如果您对本系统感兴趣,想加入我们或者想进行任何形式的合作,请加微信 skysky1258

浏览记录|手机版首页|使用帮助|题库网 (https://tiku.one)

GMT+8, 2025-10-29 23:23 , Processed in 0.433657 second(s), 165 queries , Redis On.