Suppose that an object travels from one poin+y0afn/x:k w gulajmae;52s3(o+a z mt in space to another. Make a comparison between the w 2x+/z5af3 g 0nkjslom; y+ eaa:(amudisplacement and the distance traveled.

  When is the average velocity of atl lt8wqy:zwnu:7b7 z) 31lbtm ec3tr :c *n6xn object equal to the instantaneous velocity?

  A new car manufacturer advertises that their car can go "from zecuor1wpba q/t pq13tj*a.r .0ro to sixty in 8 s". Thtc 1 ./oa3ptra w01.jrb*qqupis is a description of

  An object moving in f ,ntjy t 0n x+,,rxaw47b)igethe +x axis experiences an acceleration of $2.0 \; m/s^2$. This means the object is

  Suppose that a car traveling to the East (+x direction) begins to slow down as l a y6xh+;2,utn3cxr )xfa4ljit approaches a traffic light. Make a statement 2 x6afltc na ru) x+x4yjlh3,;concerning its acceleration.

  Suppose that a car traveling to the West (-x direction) begins to slow down avxw0-:9 o 7 y1x-m hkgo8unl.oeny:n ps it approaches a traffic light. Make a statement concerning its accele-1 o9o8gylxn- x. 0m:7kwhyuen:vnp oration.

  Suppose that an object is moving with a constant velocity. Make a jf;w(e8ehby),,)rev xiqz f3statement concernif rwyee q,zb)v()8xfj3 ;i he,ng its acceleration.

  If the velocity of an objap b*s-vo 0 ent4 h6m*f)s9wu (tldpr ,xw55beect is zero, does it mean that the acceleration is zero? 5m(90, setfntb**bl p ov45hxweprwda s -u)6 Support your answer with an example.

  Can an object's velocity change dir3ere3l82 yzjnection when its acceleration is constant? Support your ansr32 e3njyzl 8ewer with an example.

  Suppose that an objec46hz-2y0(c fel; :rrhnvavnuf 8m9cs th 9r (bt is moving with constant acceleration. Make a statement czfv h0:9eht u2narcchbrm9r48v (;yl(s-6fn oncerning its motion with respect to time.

  Can an object have in8di,-g2mjt dscreasing speed while its acceleration is decreasing? Support your answer with an example.8,2dm sij -gdt

  Suppose a can, after aid;3tbmof/ 5nru .z ;dn initial kick, moves up along a smooth hill of ice. Make a statement concerning its accele/b;t di3ouf;m5dz .nr ration.

  Under what condition is average velocity effeke ; /z(aeb( ub5i:qual to the average of the object's initial and fiz(b (/ :ebi5 kfu;feeanal velocity?

  Objects A and B both start at rest.6mm-2;h 0i:n qf9uhmm/ zio ar They both accelerate at the same rate. However, object A accelerates for twice the time as object B. What is the fifmmmn6-2 mqhr9iihu zo a0/:;nal speed of object A compared to that of object B?

  Objects A and B both start from remb06h/jo0py js:l 2njst. They both accelerate at the same rate. However, object A accelerates for twice the timejbjj no/lh:6m2s y0p0 as object B. What is the distance traveled by object A compared to that of object B?

  When an object is released from rest and falls in the absence0mbovac 6,o*lw m8*iidj ,h0xd iy(,c of friction, which of the following is true concerning its moo*d8(voiai ,*,,wx6jb dc0mim 0hclytion?

  When an object is releas py*1ftim+j w29jesz7ed from rest and falls in the absence of friction, which of the following is true cp iy*1zwts 9j2+ 7jefmoncerning its motion?

  Suppose a ball is thrown straight up. Make a statement about thoyi br5p5q3* 8(vava qe velocity and the acceleration when the ball reaches the highest pointyap *aqv(qiv 3rb55o 8.

  Suppose a ball is thrown straight up. p :r vi*mgd92v What is its acceleration just before it reaches its hmg9pir*v v:d2ighest point?

  Suppose a ball is thrown straight up, reaches a maximum height, then fg wf oj6guod/h (.* v6farlgh9-2g;mv alls to its initial height. Make a statement abog2wjfamg/for (6g. *;6vglu 9-hhvod ut the direction of the velocity and acceleration as the ball is going up.

  A ball is thrown straight up, reaches a maximum height, then fal0 yd1r5lu :bg f9vmgb.ls to its initial height. Make .v: rmb 1uyf0ld5gb g9a statement about the direction of the velocity and acceleration as the ball is coming down.

  Suppose a ball is thrown downward in the abs,q.bb: f +vuexk 2q8vmence of air resistance. Make a statement concerning its accelerationx8 bb+ :vkvq. f,2mque.

  Suppose a skydiver jumps from a hi qgj6uyef :9hhgyd7 8.n8t/ns lj5o5 pgh-flying plane. What is her acceleration when she shetn .f: 7s6gl9jy55 jo8nedq/pgh8u h y reaches terminal velocity?

  A ball is thrown verwm,.ax)t / x 8dtadih.tically upward with a speed v. An identical second ball is thrown upward with a speed 2v (twice as fast). What is the ratio of the maximum height of the second ball to that of the first ball? (Hddi amx,.t8.x /ahtw)ow many times higher does the second ball go than the first ball?)

  Ball A is dropped from the top of a buildq 1 / bjw5csqp*;f-s5p2q nr9(jvrcnb ing. One second later, ball B is dropped from the same building. A b5n 2;(59q 1 fcj /vpwsr-brqpcsn*jqs time progresses, the distance between them

  Ball A is dropped from the top of a building. One secon00xewo(rctp ;d later, ball B is dropped from the same building. As time progresses, the difference i ewr00;(cxot pn their speeds

  Two objects are thrown from the top of a tall j wr(iz:1l gf3building. One is thrown up, and the other is thrown down, both with the same initial speed. What are their speeds when thef(rgw3 i:j1z ly hit the street?

  A brick is dropped from the top of a building. A second-s )h yhitr vn.)z1 mjs3k35:qg7m yon brick is thrown straight down from the same building. They are released at the same time. Neglect air resistance. Compare the accelerations ofnmt5qn k-37)vh 3ygi):1sry hj.zsmo the two bricks.

  An object is moving with constant non-zero velocity in the +x axis. The posit;ao7 cd5/wnef ion versus timen7wd/ fc5oe;a graph of this object is

  An object is moving with constant non-zero accel0(c5l+ n8mpun8udsw neration in the +x axis. The position s05+8ucndnulpnwm8 (versus time graph of this object is

  An object is moving with constant non-zero velocity in the +x ax)l jdyuw 724-hi +qy 5 q;hk.snzktl(eis. The velocity versus time graph of this object 47ie;ly+yts5 .)( hhkkqdl2z-nwjuqis

  An object is moving with constant non-zero acceleration in the +mp t6)+.tica;dz,2 9gleuhne x axis. The velocity vered2)9.ha,ucl em+gpnt;i t6 zsus time graph of this object is

  The slope of a position ven yvdc )nsl9:e7 iq.k4rsus time graph gives

  The slope of a velocity versuy,s*lqu, 1lo 2r(fytc pgtie5bw3 r2 6s time graph gives

  The area under a curve in an acceleration versus time graph givexum8(/5gv( sywve3why:cq c/ s

  The area under a curve in a velocity versus tiqkp h1l5+ah 9xme graph gives

  If the position versus time graph of an object is a horizoqw/3uat 2:gb nntal line, the object i 3 gqb:nu2a/tws

  If the position versus time graph of an object is a verti1 eo 0fg7n*s n7i3ywrocal line, the object isyg*1 3wnsf7 7enro0 oi

  If the velocity versus time graph of an object is a horizontal line, the ob(9jzp8s 8qt ftoz65 xbject 5st9 oqx88z(p bj6tfzis

  If the velocity versus time graph of an object is a straight line ma8w*c8xl/f ao ozyi 1t0king an angle of 30xotyi 0w*/ lz8 1acf8o degrees with the time axis, the object is

  An object moves 15.0 m north and then 1qs(bx 7plxf)vqu7.6o :b9 mkvpc * up0y+/jh b1.0 m south. Find both the distance traveled and qvl/k pp.pqux0bb 9* u(o hj67c:+f7)mvbx s ythe magnitude of the displacement vector.

  A boat can move at 30 km/h in still water. How lonhr, 6bd,ik2kwg will it take to move 12 km upstream in a river flowing 6.0kh,,2bi6 w kdr km/h?

  55 mi/h is how many m/;sg0bm/bf6 jw g6mzc 1s? (1 mi = 1609 m)

  What must be your average speed in ord91-6rx 8+qo jkpv askep;;f tker to travel 350 km in 5.15 h?

  A runner ran the marathon (approximately 42.0 km) i 5 4o:jyhgf spks .9;8wawjr6in 2 hours and 57 min. What is the average speed of the rukgw8hs:psi4 jaj w ry6;.o9f5 nner in m/s?

  A car travels 90 km/h. Hogs9yqe-2,dtt w long does it take for it to travel 400 km?

  A ly (light year) is the distanc-06ne dd9ger f45kwxse that light travels in one year. The speed of 6 n94dx5keer -gdw 0sflight 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.)

  If you are driving 72 km/h along a stc :3b1akxvi dq5cm 4;uraight road and you look to the side for 4.0 s, how far do you travel during this v4:xa5d ;cb kqm i31ucinattentive period?

  If you run a complete loop around an outdoor track (400 m), in 100 s, your aveg o;.p1+,9xe8 vb ehrvdt(klu;z9jikrage velocituov+krl i(hd b,k9g pzje1;e8v t9 ;x.y is

  A polar bear starts at the North Pole. It travels 1.0 km sou7 1+fvuz jipz9;6w,tq( uavul th, then 1.0 km east, then 1.0 puv(za qt96lu7uv i jwz,f+ 1;km north, then 1.0 km west to return to its starting point. This trip takes 45 min. What was the bear's average speed?

  A polar bear starts at the North Pole. It travels 1.0 km sinkd1sk 1o o+m(6snzuh s1gnc9 7th 35outh, then 1.0 km east, then 1.0 km north, then 1.0 km west to return to its starting point. This trip takes 45 min. What was the bear's average vos sc19s6(od h+ k7n 1nm5ingtuz3h1kelocity?

  You are driving home on a weekend from school at 55 mi/h for 110 m7n : (um5 b uvx+pzza-xutj0 zov27:hziles. It then starts to snow and you slow to 35 mi/h. You arrive home after driving 4 hours and 15 minutes. How far is yo:z7u- j(bu xohmnu+z75zxz :2 vtv0apur hometown from school?

  A motorist travels 160 km a- :7mqe;h54e) ywspg ,wptvljt 80 km/h and 160 km at 100 km/h. What is the average speed of the motop:w wy74p)e ,evqmg;hlj -5tsrist for this trip?

  A motorist travels for 3.0 h at 80 km/h and 2.0 h at 100 km/h. vr 0lshj3ghkz 800;ty What is her average speed for the tril3 vg zkht000j yrs8h;p?

  An airplane travels at 300 mi/h south for 2.5yq +c1klv.eplo8 tp 500 h and then at 250 mi/h north for 750 miles. What is the average speedtcy. 8pv ql5pel5 +1ok for the trip?

  In a 400-m relay race the anchorman (the person who runs the sx+;ne r g8uxhs6gz e,7c(2ml last 100 m) for team A can run 100 m in 9.8 s. His rival, the a 7el;(zgxhxs +s6 8e rgmuc,n2nchorman 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 the team A runner not lose the race?

  A car decelerates uniformly and comes to a stop aftbs+yh;e(4;e 9xneaj5tom- pr er 12 s. The car's average velocity during deyer9;ox (s4bpe-jtme 5a+h ;nceleration was 34 km/h. What was the car's deceleration while slowing down?

  An airplane increases its speed from 100 m/s tor.8mam qw-48l kyoad 4)0ew yb0csyxnh7 75 gw 160 m/s, at the average rate of 7. x8w-dbn lmw a4g yac5wksmq)hoe7y r4 800y$15 \; m/s^2$. How much time does it take for the complete increase in speed?

  A car traveling 60 km/h accele2azp n3 0 dfadc26-icyrates 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?

  A cart starts from resu0dxdlh vel393uq91u t 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?

  A car travels at 15 m/s for 10 s. Itl(o4,y:pe4rn5) ho brfdg0 pj then speeds up with a constant acceleration of ,g (05phrye nd)foj p44lb:r o$2.0 \; m/s^2$ for 15 s. At the end of this time, what is its velocity?

  A cart with an initial velocity of 3.7 m/s experiences a constant accgz6+l 6oyb .a+r 0wvo 2rtu0me3lwk2yeleration of .2voau+3o0k0l +lrw6met 6y ygwr2bz $2.3 \; m/s^2$. What is the cart's displacement during the first 5.4 s of its motion?

  A bullet moving horizontally to tbbb.yn ;i f:yi j3+33xrq iqq,he right (+x direction) with a speed of 599 m/s strikes a sandbag and penetrates a distance of 20.71 cm. What is the average acceleration, in :iixn33,jqb i.b3f r+;qyyqb$m/s^2$, of the bullet?

  A jet fighter plane is launched from a catapultt3bcv h,cw3z/lpms-d m7f*k;mk k7 / g on an aircraft carrier. It reaches a speed of 42 m/s at the end of the catapult, and this r,mm-3;* km hv cb p3/f7/kstdck7gzwl equires 2.0 s. Assuming the acceleration is constant, what is the length of the catapult?

  A car starting from rest moves with constant acceleration of qj,1p pbuvb89$2.0 \; m/s^2$ 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?

  A car goes from 40 m/s to 80 m/s in a distance of 200 m. What is its averagt6*bu/ yxoo.)vx6ch m e acceleratub oxmcx6v*.h6)ot y/ ion?

  An object starts fro) nj qnsd+-x1xm rest and undergoes uniform acceleration. During the first second -+njx dsnxq )1it travels 7.8 m. How far will it travel during the third second?

  An object is moving in8.w7g. 71f1n iwagk apr7cpd o a straight line with constant acceleration. Initially it is traveling at 16 m/s.o7irp7wg 11.gk7d pan8cfw.a Three seconds later it is traveling at 10 m/s. How far does it move during this time?

  A car starts from rest a2c-14u/wpnbsw d0v pup u-y uf+4k; kgnd accelerates uniformly 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?

  A car with good tires on a dry/ q0c)sncj2a r 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)

  At the instant a traffic light turns green, a car that has been waitingec*10mq fdne xr*q/ ;f at the intersectf fe*c1*xr ne/q;m0qdion starts ahead with a constant acceleration 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)

  An object is thrown upward with a speed of 12 m/s on the surface of planzuou)i(4s) nb et X where the )4is ) zonu(buacceleration due to gravity is $1.5 \; m/s^2$. What is the maximum height reached by the object?

  An object is thrown upward with a speed of 12 m/s on the surface of planet - q.rq 3q7 y(6vflsncaX where the acceler q fsn-6q rv.ylqc(a37ation due to gravity is $1.5 \; m/s^2$. How long does it take for the object to reach the maximum height?

  An object is thrown upward with a speed of 15 m/s oberw w.+v x3k/n the surface of planet X where tw k/b+exr v3w.he acceleration due to gravity is $2.5 \; m/s^2$. How long does it take for the object to return to where it is thrown?

  An object is thrown upward with a speed of 14 m/s on the surface of 5eolli0le,sg1 , bgc/ planet X where ge0,o/ c5ie, 1lgbs llthe acceleration due to gravity is $3.5 \; m/s^2$. What is the speed of the object after 8.0 s?

  Human reaction time is usually greater than 0.10 s. If your ) ze 8bvpcaur9: l h eu*h20:f:bwk0jufriend holds a ruler between p u0:0 ua8wlvbz2f cke: j:euhbr*)9hyour fingers and releases it without warning, how far can you expect the ruler to fall before you catch it?

  A ball is thrown upward at a velocity of;pjytt0kq q *; 19.6 m/s. What is its velocity after 3.00kpq;tjt0;y* q s?

  A bullet shot straight up returns to itsy09h pyd:a2a bo rajsu2 c;:1e starting point in 8 s. What is the initial spy:;sbpachuaa22 oe 9:0rdj y1eed of the bullet?

  A ball is thrown straight up with a speed of 36.0 m/s. How lokpo2r48d;qs1 xfr3fvas,w;lhy: i r 1ng does it take to return to its starting poif of,r:ql2 8 yi 1rwsvd3axsr;41hp;knt?

  A ball is thrown downward from trbd ywxp7(fi(1barfd7: 6q h9,t df ;ehe top of a building with an initial speed of 27 m/s. It strikes dbiffb:r xrtd9 fadeq;,771(h6(pywthe ground after 3.5 s. How high is the building?

  A ball is thrown straight up with a speed of 30 m/s;9 dv k))jxope. (only fill in numerical value in th k;p j9))xodeve blanks)
(a.) How long does it take the ball to reach the maximum height?    $s$
(b.) What is the maximum height reached by the ball?    $m$
(c.) What is its speed after 4.2 s?    $m/s$

  A foul ball is hit straight up into the air wi:j:ua2 aorbxu ra70, yenkx/ :th a speed of 44.8 m/s. (use $g=10 \; m/s^2$, only fill in numerical value in the blank)
(a.) Calculate the time required for the ball to rise to its maximum height.  (数值)  $s$
(b.) Calculate the time for the ball to fall back to the height at which it was hit.  (数值)  $s$
(c.) Calculate the maximum height reached by the ball.  (数值)  $m$
(d.) Calculate the ball's speed 1 seconds later.  (数值)  $m/s$
(e.) Determine the time at which the ball pass a point 11 m above the point of contact between the bat and ball for the first time.  (数值)  $s$
(f.) Determine the time at which the ball pass a point 11.0 m above the point of contact a second time.  (数值)  $s$

  In Fig. below, what is the velocity atl5db5w pg8tjc5w e f-e/tpl9- t = 1.0 s?

  In Fig. below, what is the velocity(w7ld0 b arz)j at t = 2.5 s?

  In Fig. below, what is the velocity at t = 4.(5 :f *sxy)a7aiahuma0 s?

  In Fig. below, what is the velocity at t = 5.5 i())m62yuoii z0ur s vs?

  In Fig. below, what is the average velocity fx(ko(e1gr d0n rom 0 to 4.0 s?

  In Fig. below, what icrbpey1du jchrx/ 66 9:8vlw ,s the average velocity from 0 to 6.0 s?

  In Fig. below, what i /f5n24x+k3h;c,nvtu n qcju9t uha *ls the acceleration at 1.0 s?

  In Fig. below, what is the acceler kyd:wb6ivx q/w0(u7cation at 3.0 s?

  In Fig. below, what is the ag,jp 1hfdj87y/e9mz hverage acceleration from 0 to 5.0 s?

  In Fig. below, what is the average acceleration fnne)1 ld1pfh /r0dh y1rom 0 to 8.0 s?

  In Fig. below, what is the displacement from 0 to 8.0 sfyf ntk1 m-.jv.*so 6l1vs9nj ?

Does a car speedometer measurmtvwgy )hd 20j (v60tfg* :8xxsko2 zne speed, velocity? {speed|velocity}

  An object can have a varying sp0ncb ( k9o;qgxeed if its velocity is constant.

  The velocity of an object can be negative when its enr345 ei yn1tv6gf 3gacceleration is positive.

  If one object has a greater speed than a second objec8hwlgo vpaw4l u7ib (r*v6*q.t, the first must have a greater accel 6q (a uplrw gl*4*w8vhbo7.iveration.

  Two cars emerge side by q 6sb64 t):- sqtiwjvcside from a tunnel. Car A is traveling with a speed of $60 \; km/h$ and has an acceleration of $40 \; km/h/min$ Car B has a speed of $40 \; km/h$ and has an acceleration of $60 \; km/h/min$ . Can A will pass car B at the instant they come out of the tunnel.

  An object can be increasing in speed v2 56(k j2tdosnp e2iyas its acceleration decreases.

  A baseball player hits a foul ball straight up into the air. It leaves the bf ;pirr9w3n m/s(os0o.m4gi fat with a sppom (ni si0 93/ 4ff.wgsr;moreed of $120 \; km/h$. In the absence of air resistance, how fast will the ball be traveling when the catcher catches it?    $km/h$ (please only fill in numerical value in the blank)

  As a freely falling object spes* s r3fbyjo..eds up, what is happening to its acceleration, how does it f3oyj..ss* brchange if air friction is ignored?

  As a freely falling object speeds up, what is happening pvuqdj.-s z3 2to its acceleration, how does it change if air frictio.s-j2 pvu3qz dn CAN NOT be ignored?

  An object that is thrown vertically upward will return to its original positi lzhww 0i ;ww(lzk+7j/on with w+;wz(zij lwhlw/7 0kthe same speed as it had initially if air resistance is negligible. If air resistance is appreciable, how will this result be altered?

  An object can have zero velocity and nonzetg de)t,9wg3s fc1 r8kro acceleration at the same time.

  An object can have nonzero velocity and zero accelerawi j-y65;vz:gkm2kd x 3wbi4 ition at the same time.

  An elevator moving from the second floor to the mb*) be,zh2it fifth floor making no stops along the way has zero accemzet2ib h,*b)leration all the time.

  A rolling ball moves f j33crd : hpas2sq4+rh2wb cy:rom $x_1=3.2 \mathrm{~cm}$ to $x_2=-6.0 \mathrm{~cm}$ during the time from $t_1=1.7 \mathrm{~s}$ to $t_2=5.8 \mathrm{~s}$. What is its average velocity?  (数值)  $cm/s$ (only fill in numerical value please)

  A particle at $t_1=-4.0 \mathrm{~s}$ is at $x_1=2.3 \mathrm{~cm}$ and at $t_2=3.9 \mathrm{~s}$ is at $x_2=7.6 \mathrm{~cm}$. What is its average velocity?  (数值)  $cm/s$

  A person jogs eight com,pe-e-l : 7e7vk8ytjhs(p li c9haj j*plete laps around a quarter-mile ($1 \; mile = 1609 \; m$) track in a total time of 7.5 min. Calculate (a) the average speed  (数值)  $m/s$ and (b) the average velocity    $m/s$

  A horse canters away from its trainer in a eyhs/xl .7 h2(7erh bystraight line, moving 103 m away in 8.9 s. It then turns abruptly and gallops halfwasley7/b x (. hehr72yhy back in 4.6 s. Calculate (a) its average speed  (数值)  $m/s$ and (b) its average velocity  (数值)  $m/s$ for the entire trip, using “away from the trainer” as the positive direction.

  A car accelerates from llb1)u)j62r gm+wh/r cyz1:a pk ccf8$10 \; m/s$ to $22 \; m/s$ in 5.3 s. What was its acceleration?  (数值)  $m/s^2$ How far did it travel in this time?  (数值)  $m$ Assume constant acceleration.

  A car slows down fro7+m aw6q b9od 5-ontlekq,8kem $23 \; m/s$ to rest in a distance of 73 m. What was its acceleration, assumed constant?  (数值)  $m/s^2$

  A light plane must reach *rk4-d qzqj5g a speed of $27 \; m/s$ for takeoff. How long a runway is needed if the (constant) acceleration is $2.8 \; m/s^2$ ?  (数值)  $m$

  A world-class sprinter can burst out of the blocks to essentially top speed abo8c /shciq, *.mh( deadut (ec.dd h8q*is,cham / $10.9 \; m/s$ in the first 12.8 m of the race. What is the average acceleration of this sprinter?  (数值)  $m/s^2$ and how long does it take her to reach that speed?  (数值)  $s$

  A car slows down uniformly from a speed of ov+ 5nk k4n u(*4tv hq k8vzo(xavjc(3$18 \; m/s$ to rest in 5.31 s. How far did it travel in that time?  (数值)  $m$

  In coming to a stop, a car leh4jk i 29nc ho5ro;/dfaves skid marks 92 m long on the highway. Assuming a decelerati;ih2 fd/ nho5k94cjroon of $7.00 \; m/s^2$, estimate the speed of the car just before braking.    $m/s$

  A car is behind a truck *hl 5l4sb)hczgoing $25 \; m/s$ on the highway. The car’s driver looks for an opportunity to pass, guessing that his car can accelerate at $1.0 \; m/s^2$. He gauges that he has to cover the 20-m length of the truck, plus 10 m clear room at the rear of the truck and 10 m more at the front of it. In the oncoming lane, he sees a car approaching, probably also traveling at $25 \; m/s$. What is the closest distance of the approaching car that he can still sately make the attempt to pass the truck? (without hitting the approaching car).    $m$

  A runner hopes to complete the 10,000-m run in lessz751lbq 6ndsum+ e/(5y2g3pnzjb fqg than 30.0 min. After exactly 27.0 min, there are still 1100 m to go. The runner must then accele5s/gn j+fdq1 (7e3l myp6gz qbbzu2n5rate at $0.20 \; m/s^2$ for how many seconds in order to achieve the desired time?    $s$