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习题练习:IB Physics Homework3: A1 kinematics - 1D Motion Basics (SL & HL)

 作者: test   总分: 63分  得分: _____________

答题人: 游客未登录  开始时间: 25年09月21日 21:41  切换到: 整卷模式

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1#
 
单选题 ( 1.0 分) (组内1/46) 切至整卷模式 搜藏此题  
第 1 题组 (共 46 题 49 分)
  Suppose that an object travels from one point in space to another. Make 2 m :o7;pxmtpj:f*ze dbz )psrx9p83pa comparison between the displacement and tsd:p :mtopjzp 3m;f* pz7 98e)rb x2xphe distance traveled.

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2#
 
单选题 ( 1.0 分) (组内2/46) 切至整卷模式 搜藏此题  
  When is the average velocity of an object equal to the instantaneous velocw.kygu;o t- .city?

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3#
 
单选题 ( 1.0 分) (组内3/46) 切至整卷模式 搜藏此题  
  A new car manufacturer advertises that their cazi-(fsggw7 ) tr can go "from zero to sixty in 8 f7zg)wsgi(t - s". This is a description of

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4#
 
单选题 ( 1.0 分) (组内4/46) 切至整卷模式 搜藏此题  
  An object moving in the +x axis experiences an acceleration of gsc( a)h0xq.e $2.0 \; m/s^2$. This means the object is

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5#
 
单选题 ( 1.0 分) (组内5/46) 切至整卷模式 搜藏此题  
  Suppose that a car traveling to the East (+x direction) begins to slow down as ae;(1dly/xo 4 ke 3ybtit approaches a traffic light. Make a statement concerning i/x;t l(oeyd3 yba41k ets acceleration.

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6#
 
单选题 ( 1.0 分) (组内6/46) 切至整卷模式 搜藏此题  
  Suppose that a car traveling to the West (-x drr-0jl3) n/xidq *dofirection) begins to slow down as it approaches a traffic light. Makri0ox/*fl3rdjq dn)-e a statement concerning its acceleration.

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7#
 
单选题 ( 1.0 分) (组内7/46) 切至整卷模式 搜藏此题  
  Suppose that an object is moving with a constant velocitt+qb* r3r9i aua(/qhwy. Make a statement concerniaiaq9q* b 3h(ur+rw/tng its acceleration.

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8#
 
单选题 ( 1.0 分) (组内8/46) 切至整卷模式 搜藏此题  
  If the velocity of an object is zero, does it mean that the acof5bg.nw4-a0la z kz *d;wb3o celeration is zero? oada*;wk 3n0- o5w z4fzb.gl bSupport your answer with an example.

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9#
 
单选题 ( 1.0 分) (组内9/46) 切至整卷模式 搜藏此题  
  Can an object's velocityd e(:9dnyf gz7hzbv qw635 id, change direction when its acceleration is constant? Suppg ye(65w nfivzdq 7b:z9h3d,dort your answer with an example.

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10#
 
单选题 ( 1.0 分) (组内10/46) 切至整卷模式 搜藏此题  
  Suppose that an object i5s u+ 1fdl nntp;s,8huvd 2o5ds moving with constant acceleration. Make a statement concep2 tusu58d;1n lvfo d +sn5,hdrning its motion with respect to time.

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11#
 
单选题 ( 1.0 分) (组内11/46) 切至整卷模式 搜藏此题  
  Can an object have increasing speed while its acceleration is decreac e0od0o /jv4b;xdgl6 sing? Support your xo40jeb6d cd/0;golv answer with an example.

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12#
 
单选题 ( 1.0 分) (组内12/46) 切至整卷模式 搜藏此题  
  Suppose a can, after an initial kick, moves up along a s:8zz, u*bno z6m.nt tumooth hill of ice. Make a statement conceozzuz n,86*b mnu tt.:rning its acceleration.

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13#
 
单选题 ( 1.0 分) (组内13/46) 切至整卷模式 搜藏此题  
  Under what condition is average velocity equalfsiz9;vc ahx.(sg , c9xerkn)u6nl82 to the average of the object's initial and final veg86u .xkan2xlcscer n vs 9zi(h ,9;f)locity?

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14#
 
单选题 ( 1.0 分) (组内14/46) 切至整卷模式 搜藏此题  
  Objects A and B both sv 6joxw:dfa5vqom/ q5q+*k( ztart at rest. They both accelerate at the same rate. However, object A accelerates fo: 5d(kovq5o*q+xwmj 6vfa/ qzr twice the time as object B. What is the final speed of object A compared to that of object B?

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15#
 
单选题 ( 1.0 分) (组内15/46) 切至整卷模式 搜藏此题  
  Objects A and B both start from restapm u csmdk+*wf b5 p*8f:1ls4. They both accelerate at the same rate. However, object A accelerates for twice the time as object B. What is the distance traveled by object A c8fflwu*msc +pk1pb ma4*ds: 5ompared to that of object B?

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16#
 
单选题 ( 1.0 分) (组内16/46) 切至整卷模式 搜藏此题  
  An object moves 15.0 m north and then 11.0 m south. Find bot4ulna(qi0h* m4ojb(uz6 + m.wb sig0wh the distance traveled and the magnitude of thobw.6m0i4zuiwm( nuqg l0+* h(b4js ae displacement vector.

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17#
 
单选题 ( 1.0 分) (组内17/46) 切至整卷模式 搜藏此题  
  A boat can move at 30 km/h in still water. How long will it take tooud 8s7:kf /zh move 12 km upstream in oh78us d/k:zf a river flowing 6.0 km/h?

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18#
 
单选题 ( 1.0 分) (组内18/46) 切至整卷模式 搜藏此题  
  55 mi/h is how many m/s? (1 (fkg.mv c m:ft4/zqqe-bt) q/mi = 1609 m)

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19#
 
单选题 ( 1.0 分) (组内19/46) 切至整卷模式 搜藏此题  
  What must be your average speed in order9n8*msa nf7 7sgkzrp(aej sz0,h*e b0 to travel 350 km in 5.15 h?

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20#
 
单选题 ( 1.0 分) (组内20/46) 切至整卷模式 搜藏此题  
  A runner ran the marathon (ap5qm us)y-wmee60t zfi1k9:y mc. ;swtproximately 42.0 km) in 2 hours and 57 min. What is the average speedww5s -fmqymz ic e ;y:e0k stm.69)tu1 of the runner in m/s?

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21#
 
单选题 ( 1.0 分) (组内21/46) 切至整卷模式 搜藏此题  
  A car travels 90 km/h. How long does it take for it to )yl 4hlnfhz6 ;j6yg;/v qtr9ju)jk2jtravel 400 km?

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22#
 
单选题 ( 1.0 分) (组内22/46) 切至整卷模式 搜藏此题  
  A ly (light year) is the distance that light tr bq)h6.csvkv2l fg1 a.lek53oavels in one year. The speed of lig5q1.g.c 3ls kv6l)eohvbka 2fht is $3.00 \times 10^8 \; m/s$. How many miles are there in a light year? (1 mi = 1609 m, 1 yr = 365 d.)

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23#
 
单选题 ( 1.0 分) (组内23/46) 切至整卷模式 搜藏此题  
  If you are driving 72 km/h along a stravsh7/ndcxz + -ight road and you look to the side for 4.0 s, how far do you travel durinn7csx/h+v z d-g this inattentive period?

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24#
 
单选题 ( 1.0 分) (组内24/46) 切至整卷模式 搜藏此题  
  If you run a complete loop around a+// fk5k zyelhn outdoor track (400 m), in 100 s, your avera y5/e+zh flkk/ge velocity is

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25#
 
单选题 ( 1.0 分) (组内25/46) 切至整卷模式 搜藏此题  
  A polar bear starts at the North Pole. It travels 1.0 3(q(0p tvzykt km south, then 1.0 km east, then 1.0 km north, then 1.0 km west to return to its starqvtpz0 yt3 ((kting point. This trip takes 45 min. What was the bear's average speed?

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26#
 
单选题 ( 1.0 分) (组内26/46) 切至整卷模式 搜藏此题  
  A polar bear starts at the North Pole. It travels 1.0 km south, then 1.0 h.uyc)0de c3:lphamphk13a 5km east, then 1.0 km north, then 1.0 k5h p.3pk3cce01hy am)h adu: lm west to return to its starting point. This trip takes 45 min. What was the bear's average velocity?

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27#
 
单选题 ( 1.0 分) (组内27/46) 切至整卷模式 搜藏此题  
  You are driving home on a weekend from school /vth*bwg6syx- 9boq*at 55 mi/h for 110 miles. It then starts to snow and you slow to 35 mi/h. You arrive home after driving 4 ho6bvbo-*/wtq g x*hs 9yurs and 15 minutes. How far is your hometown from school?

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28#
 
单选题 ( 1.0 分) (组内28/46) 切至整卷模式 搜藏此题  
  A motorist travels 16vxi3um ih1ep:c r+*+eqgnw*:rbk9 m /0 km at 80 km/h and 160 km at 100 km/h. What is the average speed of the motorist for mgv *bemnupe+:rrh k* /:ciqi 9+1 x3wthis trip?

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29#
 
单选题 ( 1.0 分) (组内29/46) 切至整卷模式 搜藏此题  
  A motorist travels for 3.0 h at 80 km/h and 2.0 h at 100 km/h. What is h;e7g q /jgtn0koj bqk//ucl4ns4yn* kg/qm; (er average speed enk b ;t /nk/n/o7k(gu4 qg ;0gcqjyl4*ms/qjfor the trip?

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30#
 
单选题 ( 1.0 分) (组内30/46) 切至整卷模式 搜藏此题  
  An airplane travels at 300 mi/h south for 2.00 h and then lm 4bjv(;nkb/ at 250 mi/h north for 750 miles. What is the average spkln;vj4 /b b(meed for the trip?

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31#
 
单选题 ( 1.0 分) (组内31/46) 切至整卷模式 搜藏此题  
  In a 400-m relay race the anchorman (the person who runs the last 100 m)c(0a c,y4vf bo for team A can run 100 m in 9.8 s. His rival, the anchorman for team B, can cover 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 t ab,ccy0o(fv4he team A runner not lose the race?

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32#
 
单选题 ( 1.0 分) (组内32/46) 切至整卷模式 搜藏此题  
  A car decelerates uniformly and comes to a stop after 10 s. The ca6t *9 *xn i;jpo*tcmmsr's average velocity during deceleration was 76 km/h. What was the car's deceleration while slowing dowm6*somnt* xpic* 9;j tn?

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33#
 
单选题 ( 1.0 分) (组内33/46) 切至整卷模式 搜藏此题  
  An airplane increases its speed fj 8;l kbg/(ecwxe+-e 5tw).myfp x9 ferom 100 m/s to 160 m/s, at the average rate of j)pfxwb(lxe.e8 e5kmc -f+w /ge; 9yt$15 \; m/s^2$. How much time does it take for the complete increase in speed?

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34#
 
单选题 ( 1.0 分) (组内34/46) 切至整卷模式 搜藏此题  
  A car traveling 60 km/h accelerat q0on3un nj9yrr6g5ucc j;.v9 es at the rate of $2.0 \; m/s^2$. How much time is required for the car to reach a speed of 90 km/h?

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35#
 
单选题 ( 1.0 分) (组内35/46) 切至整卷模式 搜藏此题  
  A cart starts from rbtbqebo 582b, est and accelerates at $4.0 \; m/s^2$ for 5.0 s, then maintain that velocity for 10 s, and then decelerates at the rate of $2.0 \; m/s^2$ for 4.0 s. What is the final speed of the car?

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36#
 
单选题 ( 1.0 分) (组内36/46) 切至整卷模式 搜藏此题  
  A car travels at 15 m/s for 10 s. It then speeds up with a constant acceleratx n :cf,yk)1 .d;ujxsdioxc j:.s1x u;ky ,ndfd)n of $2.0 \; m/s^2$ for 15 s. At the end of this time, what is its velocity?

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37#
 
单选题 ( 1.0 分) (组内37/46) 切至整卷模式 搜藏此题  
  A cart with an initial velocity ox evs,.rfa,ig3q9r1:/yxkk cf 5.5 m/s experiences a constant acceleration oc9arexsy/vi, rkf3g.: x 1kq ,f $2.8 \; m/s^2$. What is the cart's displacement during the first 5.7 s of its motion?

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38#
 
单选题 ( 1.0 分) (组内38/46) 切至整卷模式 搜藏此题  
  A bullet moving horizontally tiy jrlg.y) xvk2,41mz4liy/ vo the right (+x direction) with a speed of 485 m/s strikes a sandbag and penetrates a distance of 89.69 cm. What is the average acceler.lg2i1 yj/vyxli,vy 4m4kr)zation, in $m/s^2$, of the bullet?

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39#
 
单选题 ( 1.0 分) (组内39/46) 切至整卷模式 搜藏此题  
  A jet fighter plane is launched from a catapult on anjp6qn) 4 *l *bvza.rr49kh um/:olizd aircraft carrier. It reaches a speed of 42 m/s at the end of the catapult, and this requires 2.0 s. Assuming the accele z )9l*aj*pb u /rirzk.4vd:4hnm6qloration is constant, what is the length of the catapult?

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40#
 
单选题 ( 1.0 分) (组内40/46) 切至整卷模式 搜藏此题  
  A car starting from rest mo -auv rf,u)zsh iss6lyx y06;*ves with constant acceleration of $2.0 \; m/s^2$ for 10 s, then travels with constant speed for another 10 s, and then finally slows to a stop with constant acceleration of
-$2.0 \; m/s^2$. How far does it travel?

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41#
 
单选题 ( 1.0 分) (组内41/46) 切至整卷模式 搜藏此题  
  A car goes from 40 m/s to 80 m/s in a distance of 200 m.c kcx hy-4be9/ What is its average acceleration?cecy9 kh/b -x4

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42#
 
单选题 ( 1.0 分) (组内42/46) 切至整卷模式 搜藏此题  
  An object starts from rest and undergoes a-5)17 4brsrpl g vbnauniform acceleration. During the first second it travels 5.5 m. How far will it travel during the t sl)rbp1-r5nvaba7 4ghird second?

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43#
 
单选题 ( 1.0 分) (组内43/46) 切至整卷模式 搜藏此题  
  An object is moving in a straight line with constant acceleration. Initiutdcvgvyljb13 +a:(kd r k87)ally it is traveling at 16 m/(+b1dcdj78 kuy :g k)rvt3alvs. Three seconds later it is traveling at 10 m/s. How far does it move during this time?

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44#
 
单选题 ( 1.0 分) (组内44/46) 切至整卷模式 搜藏此题  
  A car starts from rest and accelerates uniformlyv jksg8p2kuf ,f-w *)r at $3.0 \; m/s^2$. A second car starts from rest 6.0 s later at the same point and accelerates uniformly at $5.0 \; m/s^2$. How long does it take the second car to overtake the first car?

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45#
 
填空题 ( 2.0 分) (组内45/46) 切至整卷模式 搜藏此题  
  A car with good tires on av s:4fwsdf5u+ dry road can decelerate at about $5.0 \; m/s^2$ when braking. Suppose a car is initially traveling at 55 mi/h.
(a.) How much time does it take the car to stop?    $s$ (only input numerical values)
(b.) What is the stopping distance?    $m$ ((only input numerical values)

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46#
 
填空题 ( 3.0 分) (组内46/46) 切至整卷模式 搜藏此题  
  At the instant a traffic wj/3/t6 qut j4 8smlqulight turns green, a car that has been waiting at the intersection starts ahead with a constant accelerationq /t3u6t m8qls/j 4ujw of $2.00 \; m/s^2$. At that moment a truck traveling with a constant velocity of 15.0 m/s overtakes and passes the car.
(a.) Calculate the time necessary for the car to reach the truck.    $s$ (only fill in numerical values)
(b.) Calculate the distance beyond the traffic light that the car will pass the truck.    $m$ (only fill in numerical values)
(c.) Determine the speed of the car when it passes the truck.    $m/s$ (only fill in numerical values)

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47#
 
填空题 ( 1.0 分) (组内1/14) 切至整卷模式 搜藏此题  
第 2 题组 (共 14 题 14 分)
  Convert 35 mi/h to 6hu9 ljfj38j m
(a) km/h,    km/h
(b) m/s ,    m/s
(c) ft/s.    ft/s

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48#
 
填空题 ( 1.0 分) (组内2/14) 切至整卷模式 搜藏此题  
  A rolling ball moves from i:*lgw2 o(yxk $x_1$ = 3.4 cm to $x_2$ = -4.2 cm during the time from $t_1$ = 3.0 s to $t_2$ = 6.1 s What is its average velocity?    cm/s

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49#
 
填空题 ( 1.0 分) (组内3/14) 切至整卷模式 搜藏此题  
  A particle at $t_1$ = -2.0 s is at $x_1$ = 3.4 cm and at $t_2$ = -4.5 s is at $x_2$ = 8.5 cm What is its average velocity? Can you calculate its average speed from these data?    cm/s

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50#
 
填空题 ( 1.0 分) (组内4/14) 切至整卷模式 搜藏此题  
  You are driving home from school steadily awcg9m3 h,soqse 75ap.t 95 km/h for 130 km. It then begins to raio p3 csa 759msw.hq,egn and you slow to 65 km/h You arrive home after driving 3 hours and 20 minutes.
(a) How far is your hometown from school?    km
(b) What was your average speed?    km/h

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51#
 
填空题 ( 1.0 分) (组内5/14) 切至整卷模式 搜藏此题  
  A person jogs eight complete laps around a qu 79lha, 8xxesoarter-mile track in a total time of 12.5 9xx 8l,e oa7hsmin. Calculate
(a) the average speed    m/s
(b) the average velocity, in    m/s

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52#
 
填空题 ( 1.0 分) (组内6/14) 切至整卷模式 搜藏此题  
  A horse canters away from its trainer in dsn qt)nyx/ptkw * i idf:l(,ahw2 c:1de++v+a straight line, moving 116 m away in 14.+wd)pq na,ce :s + tfnddxhkivwi:*t(l2 y+1/0 s. It then turns abruptly and gallops halfway back in 4.8 s. Calculate
(a) its average speed    m/s
(b) its average velocity for the entire trip, using “away from the trainer” as the positive direction.    m/s

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53#
 
填空题 ( 1.0 分) (组内7/14) 切至整卷模式 搜藏此题  
  An airplane travels 3100 km at a speed of 790 km/h , and thptqyr* (*n eeqm1b05x en encounters a tailwind that boosts its speed to 990 km/h for the next 2800 k1y*p( 0x*q tnem qeb5rm.
What was the total time for the trip?    h
What was the average speed of the plane for this trip? [Hint: Think carefully before using Eq. 2–11d.]    km/h

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54#
 
填空题 ( 1.0 分) (组内8/14) 切至整卷模式 搜藏此题  
  Calculate the average speed and average veloc8dxlrdll)1 j- ity of a complete round-trip in which the outgoing 250 km is covered at 95 km/h followed by a 1.0-hour lunch break, and the return 250 km is covered at 5lx)-81ldrldj 5 km/h.    km/h

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55#
 
问答题 ( 1.0 分) (组内9/14) 切至整卷模式 搜藏此题  
If one object has a greater speed than a second object, does -ita( vp(.e 1n x5xsoo,mom 5dthe first necessarily have a greater acceleration(n aximx,5esot-m5op.1( o vd? Explain, using examples.
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56#
 
问答题 ( 1.0 分) (组内10/14) 切至整卷模式 搜藏此题  
Compare the acceleration on a+p+ijia4w+ f a motorcycle that accelerates from 80km/h to 90km/h with the acceleration of a bicycle that accelerates froa+inapi4 w++j m rest to 10km/h in the same time.
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57#
 
问答题 ( 1.0 分) (组内11/14) 切至整卷模式 搜藏此题  
Two cars emerge side by side from a tunnel. Car A is tr9uv9p a 3cjkv,aveling with a speed of 60km/h and has an acceleration of 40km/h/min . Car B has a speed of 40 km/h and has an acceleration of 60km/h/min . Which car is pas9av9 ukpv3, jcsing the other as they come out of the tunnel? Explain your reasoning.
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58#
 
问答题 ( 1.0 分) (组内12/14) 切至整卷模式 搜藏此题  
Can an object be increasing in speed as its accelerau9psz krggv5eq 9 uo c.;o6.zw+ q7:yztion decreases? If so, give anzc . ze:7q6gw.v9o +u ;rp5o 9sqzyugk example. If not, explain.
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59#
 
问答题 ( 1.0 分) (组内13/14) 切至整卷模式 搜藏此题  
Can an object have zero velocity and nonzero acceleration at the same2nw; vffgphwa 88zf55 time? Give exampl z8wg2;fv pnh w55f8afes.
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60#
 
问答题 ( 1.0 分) (组内14/14) 切至整卷模式 搜藏此题  
Can an object have zero acceleration and nonzero velocity at the same timeehs,3-+fi ub r? Give exampleeb fu+h i,-3rss.
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