Suppose that an object t c (krcc1(nd9z:vqq 1hravels from one point in space to another. Make a comparison between9z qcn:rqk11h((cd vc the displacement and the distance traveled.

  When is the average velocity of an object equal to the instantaneous velocicqd)q*8,(4,:ww fa uf ukg3v i3vomgaty?

  A new car manufacturer advertises that the4wd07 fy:z7:fu/emt6 qwlvvr:ov d4 yir car can go "from zero to sixty in 8 s". This is a descripwt/uf 6v:v qwyz0ly47m: dr:doe47fvtion of

  An object moving in the/ h1;vmmlhr,l +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 dz7zn3me3 1g.kjhx k0*qicn 8sirection) begins to slow down as it approaches a traffic light. Make a stateme ex z*n1k3js7gi80nqck3.m hznt concerning its acceleration.

  Suppose that a car traveli rfto4f8 /ue5png to the West (-x direction) begins to slow down as it approache/4tr o 85ffueps a traffic light. Make a statement concerning its acceleration.

  Suppose that an object is moving with a constant velop3 (jk*x) ywftj nz7 xw/n,n3ecity. Make a statement concerning ix3zeny j,7 (k nfw/)*tp3x jwnts acceleration.

  If the velocity of an object is zero, sc-se dp 54s(ndoes it mean that the acceleration is zero? Support your c5 s (sep4nsd-answer with an example.

  Can an object's velocity change direction when its acceleration is constant? c+bj/y:dz j0zSupport your a /j:zjb+yd0 zcnswer with an example.

  Suppose that an object is moving with constant accel+e r 2(dp+zhneeration. Make a statement concerning its motion with respect t2+p (+hrdenzeo time.

  Can an object have increasing sp jgfp118cq:m8j7v9ah:nu no seed while its acceleration is decreasing? Support your17pnua hmn8 jq1 jvc:s9fg: o8 answer with an example.

  Suppose a can, after an initial kick, moves up along a sc(*woec f+6c smooth hill of ice. Make a statement concerning its accel(*ecf ocw s+c6eration.

  Under what condition is average velocity equal to the average of the object's in om)s(qr+qj9 pc9x9pxitial and final velocity?p+(op9r)qx j m99 xqsc

  Objects A and B both start at rest. They both accelerate at the same rate. Hovq4 5:nshcq6/o j1sdu wever, object A acceleratessh4 qo15 v/cd:sn 6qju for twice the time as object B. What is the final speed of object A compared to that of object B?

  Objects A and B both start from rest. They both a6,,ns(c cth.h. pgiu gccelerate at the same rate. However, object A accelerates hnig.. ,g(6scpc hut, for twice the time 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 th ;9ihvijz fs.e.w3(hlst4 (iye absence of friction, which of the following is true concerning its mo3.yh(if ;ijht4l( e v9wi.zss tion?

  When an object is released from rest and falls in 0(wtpld;c4a0 yhjv q8the absence of friction, which of the following is true concerning its moti40a;0pt8dl y (qc jwvhon?

  Suppose a ball is thrown straight up. Make e uo70o6(ita sa statement about the velocity and the acceleration when the baoi eu0o7t( 6asll reaches the highest point.

  Suppose a ball is thrown straight up. What is its acceleration just beforer0z/ vlnw clq 73; ,.h:+vtuqenoruh ( it reaches3u0q(,+hhn q;o wrl/t:vc u7lr.z n ev its highest point?

  Suppose a ball is thrown o2 qnx1-h p,2khrs1(ni/ o kvjstraight up, reaches a maximum height, then falls to its initial height. Make a s2p s2h q 1vkk(o orhi/n1jx,-ntatement about the direction of the velocity and acceleration as the ball is going up.

  A ball is thrown straight up, reaches a maximum height, thguga*lzp-jm bu9 p6,we9 6*x nen falls to its initial height. Make a statement about the6 p*, *jgm 9u6u-xb9g lenpazw direction of the velocity and acceleration as the ball is coming down.

  Suppose a ball is thrown downwardrj:c gk/y 3gjy unl3l0b1i.*x in the absence of air resistance. Make a statement yiglu.krx by 30gj1c3/l:j*n concerning its acceleration.

  Suppose a skydiver jumps froqm y3n-mmb)2b m a high-flying plane. What is her acceleration when she she reaches termin-bq m3)m nm2byal velocity?

  A ball is thrown vertically upward with a speednhd0m ymlq)2; 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 qdmy; nl0 m)2hto that of the first ball? (How many times higher does the second ball go than the first ball?)

  Ball A is dropped from the top of a building. One second bc-b5 p)v6ee7(gs tbhlater, ball B is dropped from the same building. As time progbps5g vh b67tc eb-e)(resses, the distance between them

  Ball A is dropped from the top of a build*k9safxpf 81 king. One second later, ball B is dropped from the same bui8k1ps*a9 kxff lding. As time progresses, the difference in their speeds

  Two objects are thrown from the top of a t*xnllbq( 4 lom1 ph b n3z9(hy-4,raztall building. One is thrown up, and the other is thrown down, both with the same inilq1x(p4 (ln,bh*3zzla oh-9 yrtb nm4tial speed. What are their speeds when they hit the street?

  A brick is dropped from the ka0,ymd 9 cz9aer) p8jtop of a building. A second brick is thrown straight down from the same building. They are releas8,zp99c)j0e akm dyar ed at the same time. Neglect air resistance. Compare the accelerations of the two bricks.

  An object is moving with xsblv 7y zq* g) /j7ujlt7nn 43)vys1vconstant non-zero velocity in the +x axis. The position versus time graph oflyu)njx q 1v7s/7s*n lvgb) tyz7 v34j this object is

  An object is moving with constant non-zero acceleration in the +x axis. The posi1bkqxn,p--s b tion-, x1pkbn-qbs versus time graph of this object is

  An object is moving with constant non-0 k3ay lhw )dl8;1b9 ntxn/bzuzero velocity in the +x axis. The velocity versus time graph 0l/1wntb)3;9nx b yhldkz8 au of this object is

  An object is moving with constant non-zero acceleration in the +x afrqcz h fri-y/+.b9ai 0 o,ri-xis. The velocity versus tioq/+, ab0y.f zihr-ic-rfi9 rme graph of this object is

  The slope of a positio ) b r4btr)3*zuf,h3vd / b9f/kjrj6spwyw2 pin versus time graph gives

  The slope of a velocity versus timetw8 -wx o)z,uf graph gives

  The area under a curve in an acceleration versus time graph giv: .wcr g,*ib8m8i+1govabe aq es

  The area under a curve in a velocity ve w 5;tpfi/-f1pfop b5frsus time graph gives

  If the position versus time graph of an object is a horizontal line, the 0l8tg,xm+vyv uc5(iz object iscv zy(x85,+gtu i 0lmv

  If the position versus time graph of ana sv* hkkn k4l:ui;b4: object is a vertical line, the object is: :vb k*an4;uih skkl4

  If the velocity versus tim-eyb i 74heuary:j6g/e graph of an object is a horizontal line, the object /b7e-a:giyy46jruhe is

  If the velocity versus time graph of an kmqfxchof:pf0kwbis )+k 0ua065u ,w- 86wjtobject is a straight line making an angle of 30 degrees with the time axis a0fm u f68-kxj)i5ut0 :,swhw+kq ofbwc6pk0, the object is

  An object moves 15.0 m north and then 11.0 m south. Find both the distavtudp 4fj66df+fa2 ;mnce traveled and the magnitude of the displacement vector.af62t d+vp 6j4 fumd;f

  A boat can move at 3:f 7mtzr/ 9 ) *be,vdiowdydu95(q1ooaqiij (0 km/h in still water. How long will it take to move 12 km upstream in a river flowing 6. 7:9jtqv1q,5(b 9wy(dio umzoa/d eif* oidr)0 km/h?

  55 mi/h is how many m/s? (1 mi = 1609nvha:7voy9* 1ai t c2q m)

  What must be your average speed jliuj pr:g88wj*oo5.spxp 20in order to travel 350 km in 5.15 h?

  A runner ran the marathon (approximately 42.0 km) in 2 h*643/0ac k h*4muop b.q:t;a ntovbgg wsr8xh ours and 57 min. What is the average speed ow 8gtr*pb0 /hta4on;ubx 3kc*q.ovah 6sm:4 gf the runner in m/s?

  A car travels 90 km/h. How long does it takp2rapx sk 3-sw) hjz:(e for it to travel 400 km?

  A ly (light year) is the distance that lie ,y3la;vyk 8q 8xw/ fy,2a8ob 0thbfkght travels in one year. The speed of li lfkhvox;8,8e,q/yf yab 803t aybw 2kght 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 alo u+7*l,a;3vaxk g b hk m6isxy9v3w)qxlew9h:ng a straight road and you look to the side for 4.0 s, how far do you trav7wv kyx+,kx9qu3)l; x: slv63wghhma ib *e9ael during this inattentive period?

  If you run a complete lj,;lfhq8i dk)5mnw fq6 f ie50oop around an outdoor track (400 m), in 100 s, your average 8 wiqhf5 fe0d6q 5i ,;)fmlnjkvelocity is

  A polar bear starts at the North Pole. It travels 1.0 km soiz *;nzmpob1,vw ( w,wuth, then 1.0 km east, then 1(i nmwz1ozw,vwp;b*, .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 speed?

  A polar bear starts at thezv)6,q8 d o ez.wvf9fv North Pole. It travels 1.0 km south, then 1.0 km east, then 1.0 km north, then 1 d,ze)vzvfq vfwo .869.0 km west to return to its starting point. This trip takes 45 min. What was the bear's average velocity?

  You are driving home on yq8) euca:7q t0qo8aa a weekend from school at 55 mi/h for 110 miles. It then starts to snow and you sa y7:ao c uqtq)q88e0alow to 35 mi/h. You arrive home after driving 4 hours and 15 minutes. How far is your hometown from school?

  A motorist travels 160 km at 80 km/h and 160 km at 100 km/h. What :kwjzorab5n ht058* k is the average speed of the 5:twr8knk*oaz 0bj h 5motorist for this trip?

  A motorist travels for 3.0 h at 8et6 z ytxk4+wq: s0jc.0 km/h and 2.0 h at 100 km/h. What is her avera0zk cy.qwtstx+ej :64ge speed for the trip?

  An airplane travels at 300 mi/h south for 2.00 h and then at 250 mi/h norte)sx1v 101xdcy.n/xzp /jnng h for 750 miles. What is the n 1g)ze/1d1xnpx / .nxsjcy v0average speed for the trip?

  In a 400-m relay race the anchorman (the person who runs the last 10sfqn-a a.vp w(l 20b9c0 m) 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 hb(2wfqsn9ac0 pa - vl.ave 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 uniformwz:eg eiw (-m/v70un5ei vcb8ly and comes to a stop after 8 s. The car's average velocity during deceleration was 61 km/h. What was the car's decelera(/vee gb8nc- w57 ei: vziumw0tion while slowing down?

  An airplane increases its speed from 100 mbgccjkxb9l(h hch*f a./ q1* rxw 7h.,/s to 160 m/s, at the average rate of fh(*1h*c 7 c.x a jhqglkxwrh./cbb9,$15 \; m/s^2$. How much time does it take for the complete increase in speed?

  A car traveling 60 km/h accelerates at 1 qs2,9o4qaj3pn2rsw:a cecb 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 restd bnan-(e3o2 b 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. x;zvizy040bs 1 9 : lpcwbezqfan6o4+ It then speeds up with a constant acceleration of naw 9ip; fzeczvl+60s4 :1yobbz qx40 $2.0 \; m/s^2$ for 15 s. At the end of this time, what is its velocity?

  A cart with an initial velocity;1ln itu37+0 ahd(icw+xthoa of 3.0 m/s experiences a constant acceleration ohwt31ia oia+u(7hcxdtln;+ 0f $3.9 \; m/s^2$. What is the cart's displacement during the first 8.6 s of its motion?

  A bullet moving horizontally to the right (+x direction) with a spjlq3 m)r pog*otat **/eed of 313 m/s strikes a sandbag and penetrates a distance of 29.20 cm. What is the average accelerqtj/olpo**mtg3)r * aation, in $m/s^2$, of the bullet?

  A jet fighter plane is launched ejiu3/ 3t2zq cfrom a catapult on an aircraft carrier. It reaches a speed of 42 m/s at the end of the catapult, and this requires 2.0 s. Assuming the acceleration is constant, what is theju3 eqi2t/3cz length of the catapult?

  A car starting from rest moves with constant acceleratioc:/vs5xij np8n 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?

  A car goes from 40 m/s to 80 m/sn )rm + iswqfbqw(:z7 9l-w+ks in a distance of 200 m. What is its average ackf ++) l zwq7nsiwq9 :w-sb(mrceleration?

  An object starts from rest and undergoes uniform acceleratiwdi9 v ylcwyg+9o/9ir*wax95on. During the first second it travels 9iycwal+wi*95 /wgor xd 9v9y7.9 m. How far will it travel during the third second?

  An object is moving in a straight line with bo3u*.6rckcmz/ md/ iconstant acceleration. Initially it is traveling at 16 m/s. Three secb3r6u/ imoc./m ckz*d onds later it is traveling at 10 m/s. How far does it move during this time?

  A car starts from rest and accelerate5i6polh x s.7:or ksl7e j*ll3s 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 uc5 :y.o0i4 r wun0oxgroad 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 gzcv5oi w -v+80o gal/jreen, a car that has been waiting at the intersection stargi8a- v+ v5/jlzowco0ts 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 ofpkxghaz ha(+0., ze3 qc7;pvc 12 m/s on the surface of planet X where the acceleration due to gravity is ppzca+x e v.hkc(h,07qa g3z;$1.5 \; m/s^2$. What is the maximum height reached by the object?

  An object is thrown upward with a rkgxsfozfs *(*2 ;n;hspeed of 12 m/s on the surface of planet X where the accel;sk (*;hfgx2sz*nro feration 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/spy g(scg inoi,84p(9m on the surface of planet X where the acc,ocpipgy8 9(is4n (g meleration 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 p4zdr o*6a al:a5r lxai+8z 3pa speed of 14 m/s on the surface of planet X where the acceleration a3id6za az*x+rl4pr8:a5l po 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 t13x udmzl*b k,han 0.10 s. If your friend holds a ruler between your fingers and releases it without warning, how far can you expect the ruler to fallkbzux3* ,dm l1 before you catch it?

  A ball is thrown upwlknfup /3)e 6iard at a velocity of 19.6 m/s. What is its velocity after 3.0 )u ilpn/f6ek30 s?

  A bullet shot straight up returns to itacb4r,diew9 34lp m6r wa),lss starting point in 20 s. What is the initial sperb3cw4am)e,p4 ls6 rwa i9, dled of the bullet?

  A ball is thrown straightht2)dva5. l3so g yul6 up with a speed of 36.0 m/s. How long does it take to return to its star3 ghau2oyt5d6. lvl)sting point?

  A ball is thrown downward from the top of a building with an initialq 3 rs8a)e0y bipyx-6h speed of 6 m/s. It strikes the ground after 2.8 s. Ho6)eiy0p-hqax3 r syb8w high is the building?

  A ball is thrown straight up with a speed of 30 m/s. (only fill in numericadzx-sv5v-edr e0.qk1 .q+xos,7 a woql valv as1dv.5qek+ w-z qsxqd-o,07ox er. ue in the 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 i91rjp q3dn o-knto the air with a speed of 37.3 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 2 seconds later.  (数值)  $m/s$
(e.) Determine the time at which the ball pass a point 13 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 13.0 m above the point of contact a second time.  (数值)  $s$

  In Fig. below, what is the veloci/d2 9 0ssvgvszty at t = 1.0 s?

  In Fig. below, what is the velocity at t =o a 1z(yimnkfeykv,4e(l(e (/ 2.5 s?

  In Fig. below, what wa 6y+gyxi1( hhb c9hv9qq d14is the velocity at t = 4.0 s?

  In Fig. below, what id5-a 55) cw8ni nddzyes the velocity at t = 5.5 s?

  In Fig. below, what is the average velocizu y-c,kc01f*j dvw 2wty from 0 to 4.0 s?

  In Fig. below, what is the adw7nc su +8g9gverage velocity from 0 to 6.0 s?

  In Fig. below, what is the acceleratid 1nxflrs9vvgy/- (xb1gi+a +on at 1.0 s?

  In Fig. below, what is the acc:l o/97 v/ e0 /jel,vskmak1 xshtsc1dpth30feleration at 3.0 s?

  In Fig. below, what is the average acceleration from 0m b nc-5;sr eeu305ear to 5.0 s?

  In Fig. below, what is the average acceleration fro8).o-u- tk xywqjllt3 m 0 to 8.0 s?

  In Fig. below, what is ire oid5ghz5s-0(ovdr343x l the displacement from 0 to 8.0 s?

Does a car speedometer measure speed, velocity? {speed|v,h 4ne m,*oqorelocity}

  An object can have a ia xn/ kbq4t6pv* m9+aqg.no-po*w s+varying speed if its velocity is constant.

  The velocity of an obrzu57d3bfq, oject can be negative when its acceleration is positive.

  If one object has a greater speeo .8iw8q8 ousjd than a second object, the first must have a greater accelerat.88ojo u iw8qsion.

  Two cars emerge side by side from a tunnel. Car A is z 8(e uibvkkk+av 7(4ytraveling 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 as insg,.3i2ec e wt,9d yrts acceleration decreases.

  A baseball player hits a foul ball straight up into the air.u en4qn jrq)9e28odv +av1g3+g1( mraacd:m j It leaves the bat witvu qr1 eqa gd)r2:j m4j e8cana+ogm(3n+dv91h a speed 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 speeds up, what is happening to its, 6c yh- 2jidbn.vvvtrbu+(4a acceleration, how da+vi4th-vdvbbr,(. 6 y 2nucjoes it change if air friction is ignored?

  As a freely falling object speeds up, what is happenjpxq4v6vc3 k)al (pv5oda00x ing to its acceleration, how does it change if air friction CAN NOT be ipj5 vqp 0x3v4d(o kac avl)x06gnored?

  An object that is thrown vertically upward will return to ita 4hw0-1gs mcwm*bl h/q5 lae*s original position with the same speed as it had initially if air resistance is negligible. If air resistanc4glas- 5h1 *ahw/0lmmewb*q ce is appreciable, how will this result be altered?

  An object can have ze.cac5-od ndpuu 9 96zhro velocity and nonzero acceleration at the same time.

  An object can have nonzero velocity and zero acceleehewkk t8pu6)wk/zdvf1*s*ao*,5o q v c,)h xration at the same time.

  An elevator moving from the second floor to the fifth floor making nozef;49q fy 3i:i o+mpo stops along the way has zero acceleration4f:p+;fiz3 eqim9oy o all the time.

  A rolling ball movesx4u jrb51*oi o from $x_1=2.3 \mathrm{~cm}$ to $x_2=-5.9 \mathrm{~cm}$ during the time from $t_1=2.4 \mathrm{~s}$ to $t_2=5.7 \mathrm{~s}$. What is its average velocity?  (数值)  $cm/s$ (only fill in numerical value please)

  A particle at $t_1=-3.7 \mathrm{~s}$ is at $x_1=2.5 \mathrm{~cm}$ and at $t_2=3.7 \mathrm{~s}$ is at $x_2=8.4 \mathrm{~cm}$. What is its average velocity?  (数值)  $cm/s$

  A person jogs eight complete laps around a qua13x;pe dvcve .q62idw rter-mile ($1 \; mile = 1609 \; m$) track in a total time of 7.8 min. Calculate (a) the average speed  (数值)  $m/s$ and (b) the average velocity    $m/s$

  A horse canters away from 2 dwl7bz3dcuf)vm7kg3 tbs8 3its trainer in a straight line, moving 94 m away in 10.9 s. It then turns abruptly and gallops halfway back is 7783lkgtzvbcwu )32fd 3bd mn 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 frot- 3n2jbsin ,om $12 \; m/s$ to $23 \; m/s$ in 5.4 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 fromxsz :vpsml4x3kj3r;+ w*y 4tq $17 \; m/s$ to rest in a distance of 67 m. What was its acceleration, assumed constant?  (数值)  $m/s^2$

  A light plane must reach a speeye54w ia -d5vp mh(4iud of $27 \; m/s$ for takeoff. How long a runway is needed if the (constant) acceleration is $2.4 \; m/s^2$ ?  (数值)  $m$

  A world-class sprinter can burst out of the bvg rtej x*n9 qy6p*ce5.om:*ulocks to essentially top speed abouty*:m*poxerq6njtcgu.*e 5v 9 $10.8 \; m/s$ in the first 11.1 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 o.0s.ozd3zpj qf $17 \; m/s$ to rest in 5.59 s. How far did it travel in that time?  (数值)  $m$

  In coming to a stop, a car leaves skid marks 92 m long on 2(yz6wegj+ wd the highway. Assuming a w26+edw(yzj g deceleration of $7.00 \; m/s^2$, estimate the speed of the car just before braking.    $m/s$