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 travels at a conf-gtwda*n3r / stant 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 reference to a particul.b j)ycc-0yeu 6kt(6wu,gtoo ar direction -w( y0o jogu)t6kub cet. ,c6yis called

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 circulaasf5 :sa 4dohn0 eb6i)r track at an average speed of 50 m/s and then completes a second lap at an average speed5a )fad46en i bos0hs: 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 movey,7taaz,l,j f s 0.80 m in 1.0 s at the constant velocity. If it continues, how far will it travel inyta,7jfa , l,z 3.0 s?

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 plankag vzcy*e 5bg:f* c-h4rkn3 (x that is sliding at 5.00 m/s to the right 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 re5n4zh*ar xycve (g:3* bg- fkclative 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 400 km at lexjq(d+4)l3 cyr 3ym80 km/h and 400 km at 100 km/h. What is the average speed43xml(y+qej d3cl)r y of the motorist 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 traveli )i+ufuog,om- ng along the x-axis. The graph shown below is a plot of them- g uoi+o,f)u 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 the motion of a toy car traveling along tj h.u;dy( 7g2pg:ckf f8t6uu2dr+ ukghe x-axi ddg 8 fpju2kc7gtg+;uruk: f(26hy.us. The graph shown below is a plot of the car’s 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 toy car traveling9so vx1a21c7 drnfoc 2vwfn*- along the x-axin acfn f*r o-ov1ds7vcx29w12s. The graph shown below 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 duck7k *e :rje gbbm(4fxz8kq-i 3d flying due south for the winter. At what poinj(q r-:k7ibz de8 fgb3*kx4me t 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 shows the positiokb6n7tpswqpn)r1 39a n and elapsed time of a car starting from rest and unifo7s1pa3)69rbpkq ntn wrmly accelerating 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 diagram below which shows the position and elxf5- mvb8v qli y/26 *g(gnwqhapsed time of a car starting from rest and uniformly accelerating in a straight line. The average acceleration during the entire 3 second intewgqbi /28qvx *n5hlmfy6gv( - rval 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 graph for an object wgc.t*8pke 7p cdefg7/ ith the position time graph shown in the diagg8 tp/fg.*cp7e e7c dkram 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 refer to the following imyh 2*0d 2d0 uc/seg68lkhouhnformation. An ideal elastic rubber ball is dropped from a height of abou *shldymc oekhd8 h0260ug/u2t 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 q u bpzy, j2m5.y*ogov*eb-l(juestion refer to the following information. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the floor and rebounds *yeoy jzojp2, b * -5u(v.bmlgto 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 travel with a speed of kf9xt0j*k / zzsh*8jmgfpc9l2t(r4 x$v$ 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 to the uiagg* z 7yi ;i6r6o(wfollowing 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 tykc,2 z2jnsfe) 5kef7o 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 following0)3uw ug viipmy6bhrogufq;d46x6 zz -h,3, f 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 55 * jg6z)r)rohv cyjqrefers to 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.
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 dowm/ lq0,yr3kmefl6 i :pn a ramp, across a horizontal table top and off the table edge. Which of the following wl,:ym /0lpr6qkem3 fiould best represent a graph of the magnitude of the ball's acceleration vs 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 relationship hd(uo .consai r.+e( h k /o0a62rw-idbetween distance and time for an object that is moving along a straight line. What is the instantaneous speed of the or / ik(sndh2.(ro0-6 oc adauh+eoiw.bject 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 relationship between distance and time for pdayk1 veuuy 1es(83*an object that is moving yvu3ad(ks1*e y8e1 u palong a straight line. Between what 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 witraje8 p.27 4/k:m2dxtymrkxj h an initial speed of 12.0 m/s from a position 10.0 m above the mk2.:m/ rjt7ke r8a jp 2y4dxxground. 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 hgwh+iuj86w , o32bqd0 uv l/nand uniformly accelerating across the fl8,wjo0g2ulvih 6 +b/ 3dnqhwuoor. The time and distance traveled from the start are shown 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 represents a toy car starting foltdpbzjt - v5:,cp, 3rom rest and uniformly accelerating across the fpzcvb :j,op d-tl, 3t5loor. The time and distance traveled from the start are 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 rest and unife8 wpqvoh6rq): )h:o:wtz 6,v1y vdoformly accelerating across the floor. The time and distance traveled from the startwq6q d168pfho o::wyhte): zvvovr,) 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 afp(-s9ka: cafgt kx0/ uniformly accelerating ball. The position of the ball each second is indic(fx kgac:k9f/ a0p-s tated.
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 l,qe4e2.r( bhdlcvl5 a uniformly accelerating ball. The position of the ball each second is vd42h(,blelr.5 q elcindicated.
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: x./3r7 q (jghyjt4v o,w)qjdkdprmy 3ov).k moving in a straight line is shownokq3d k , 4 q)j/g y .)3tdrrv:hxj(pjymovw.7 in the 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 straight line is m;;l,s oh:ch+ 5t fboeshown in the grap5h:+m sfbc;,h ;too leh 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 n .2+p/ez3uw xp;pps mfreely in a vacuum near the surface 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 the motion of a marble 539f 0xdcxugwon a table top for 10 seconds. For which 9 dcugfx50w x3time 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 grar/j8pc((eqw)5h jogsq w x-m 3ph describes the motion of a marble on a table top for 10 seconds. For which time interval(s) did the marble have a 83w-p qg ocqe/ sh(5wj(jrx m)positive 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 (owog kep;m64yxp1 o1a table top for 10 seconds. What is thmx1 6wpeook1 p (4y;goe marbles average acceleration between t = 3.3 s and t = 3.8 s


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 fro6z ewxw*9k2dg k nh8k5m 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, thrown stb-jzfd2fz .a7 raight 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 represent the h*kmsf66 ql5bvu:7eb 4yov7 3 ewmtxd8,ige. motion of an object moving with a constant speed in a str dyxetsq*,mo.mw6l7u: 4ibgv v6ebfkh e3875aight 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 describes the motion of a toy car across the fl uop9(9b /fjdyoor for 10 seconds. What is the ac yuod9f /pb(9jceleration 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)ijzp6uxx4)u 8k c s+h of a toy car across the floor for 10 seconds. What was the total displacement of the toy car for theh iupucx8z)jk4 )sx +6 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 graph descrgdk .+71 -kp/ feh+hffcg 7bblibes the motion of a toy car across the floor for 10 seconds. At what times or timhph/l1+ ke b7g b7f -dck.gff+e 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/hr in 4.50 s. Whh;ruf8 ep /*ygich one of the following choices best represents the acceleration of the cah8f u;*rep yg/r?

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 curve shown. Which o08dffbm -w ewob*l7 -vf the following statementsw-* v8 fdb w7l0ofbme- 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-4-c7rc a-w gyfaxis according to the velocity versus time curve shown to the right. W 7gwcy4 craf--hen does the car have 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 time, a tennis ball is moved sef jwe-x97rz -g7- f wtx (vumov-.5juo that the angle between the velocity and the acceleration of the ball is kept at a -o z9ewg-jx- em5r. f(ut 7vvxw-7jufconstant 120 degree. Which statement is true about the tennis ball during this interval 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 kilometers apart and traveling towa-*h, p umh8dohs,:algt*;ry y x 6s0tprd each other.:;6-t* sors0y h a*xthlpypu ,g8dhm,
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 thew3 f rxue*px94zrsu gmgn27;o4jw4h ( acceleration is positive and inc4 fe3xmnr;z sogh*94w 4wu x2ug7jp (rreasing

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 averagemzpje6v / wk*g.8 osf6 velocity 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, zt/bd4/wp ;z ef f+j1wwhich one of the following choices identifies quwwz4j;fdp/t/fbz+1 e antities that must have the 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 moves s .unz,l b+4pct6r-va $3.0\;m$ 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-timevlt q:rp4k** i, $y\;vs\;t$, 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 right along a one-dimensi 5,dfyhu)3yjv ggczz, 7;, 4xdeg8 nbwonal track for total time T in two parts. 37 fngy 58zvg4dc xg, u,jyhb;dw, )ze
• 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 mots 8e7ej2l;(mmew5fr qion of a car on a straight track is shown in the diagram. The thick line represents the velocity. ee57 lesj; 8rwfmq( 2mAssume 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 aa h3usev8 **pgraph for the motion of a car on a straight track is shown in the diagram. The thick line represents the velocity. A8ahasp*v *u e3ssume 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 motion of an object giv*s /:axdx zv66 lup83mjfagqr3( -iejen by the position vs. time graph show:*u6aa/vlpr 6-ds m3xi3 ( exj jzfqg8n. 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. timuib ef yw05i63e graph shown. Fob yf50iue3iw 6r which time(s) is the acceleration of the object 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 acceleration vs. tiay8w31 j d/qx,mpg(pdme graph for a fixed time interval ofm1 3(/yd papdgxqw8 j, an object’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 moves apb)ujm1xfu82 long 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 two part32 w5g cp2s;p2qc oqsps:
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 m/jtob(h+6hy 9bx;mh/e7hrnd; gc z,released from 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 objecttcuh,i *q /ys. is released from rest and reaches the ground 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 g j9l5h*+ezvc vraph of a particle moving along a horizontal axis is shown. What is the total d zcvhjl *5e+9vistance traveled by 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 following choices 6ycys*fbj)ab0d2 *:gf a 2lcccorrectly identifies all of the listed situations for which there jag* 2 *:flyycb2 c) fb60dcasis 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 along a line is shorvdp9u gz,t tymtk-j( 67) 7siwn. The object s7 y,vtu(rpkzm -t)j sd6i9t7gtarts from rest at time t=0 s. At what time(s) does the object 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 along a line vs. tim* h*a,f6u:jm du)ixex e is graphed. Which one of the exa ) ufu,i:6x*mj*hd following choices best gives the proper interval(s) of time for which the object is moving away from the origin?


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 moving to the right on a horizontal tra (6/hvm lkf+seq0u2 wjck, each with constant acceleration. At an instant of time, the in+/ sfwhv jk(06q2muelformation 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 position j:.xesk;e1hfyt2ut1sw x+) l$x$, 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, which onmkz8wd d)-1 pee of the following choices correctly describes the relationship between the average ze dwp dm)-1k8speed 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 best describes the instants of time,x.t6q4 sc(l,.z:l3u yliy lbr at which the car and truck tz6 ul.(4r,:bs q cll3xyltiy.ravel 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, e3 2g3uln .sl5jdqo e j4;nkf;yikz 6b0ljq .i-ach start from rest at the origin and will move along the x-axis. The acceleration vs. ti bo05s.i36nq4qig zlujd.lyk jl f3 -e;;2jn kme graph for each car is shown. Which one 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 graph of an object mo,m n 2xgp7aja,w2 ep(zfu 4jz*ving on a horizontal line is shown. At what time(s) is the objec,j aezj4 ppzgfa 7,u*(mn2wx2 t 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 following the position vs. t/s9e+2ff b) ehf :q *flzaoyo(ime graph provided. During what ti e fo +y(lah2f)f/z *qebfso:9me interval(s) does the mass have zero acceleration?


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, 2025-11-30 00:12 , Processed in 0.621477 second(s), 165 queries , Redis On.