Suppose that an object trs/gc50-;0cqbr ,og xkr s 5sgzvl96hyavels from one point in space to another. Make a comparison betw;ob50 yg06 95xssrsgrkvl/z-,qchc g een the displacement and the distance traveled.

  When is the average velocity of an object equal to the instantaneous vel npkle+wu4xc2vlw z +8s82a i(ocity?

  A new car manufacturer advertises that their car can go "from zero o.irmc1 b ham2-w -tm,to sixty in 8 s". This is.mbih , amc-wmro2t1- a description of

  An object moving in the +x axis experiences an accele7u5rzy2mn.y 6 q l.lbpration of $2.0 \; m/s^2$. This means the object is

  Suppose that a car traveling to the East (+x direction) begim5, +r e6gqxdy0uh5pn ns to slow down as it approaches a traffic light. Make a statgy5dep+nh q0xr u m56,ement concerning its acceleration.

  Suppose that a car traveling to thx-vova )5,p9efk k i*je West (-x direction) begins to slow down as it approaches a traffic light. Make a statea i,-po5k9)jx vkfe *vment concerning its acceleration.

  Suppose that an object is moving jifeh; bg+gw-pk;u/4with a constant velocity. Make a statement concerning its accelekueg4i-jgf;h/w b +; pration.

  If the velocity of an object is zero, does it mean tha es1i)uz.9n*ecd g mh/t the acceleration is zero? Supportnc .* 91edhzuegi)s m/ your answer with an example.

  Can an object's velocity change direction when its acceleration 5:cx ynmcuz36c 6.igeq(2kmyis constant? Support your answnye6cm6c g c.zqk5iymu (3 :x2er with an example.

  Suppose that an object is moving with constant accelerationse z;3frcaw( )e3fd;b5 pi8lwh7jd 1z . Make a statement concerning its motio dedw( ;ai3r hs3epz5c 8b lfj)7w;1zfn with respect to time.

  Can an object have increasing speed while its acctwd6;t s lf0em)g(z*peleration is decreasing? Support you * de0sgf); t6wlmtz(pr answer with an example.

  Suppose a can, after an initial kick+6 ox h1vc ux2--c,5nc vl-ufqnqxl9 a, moves up along a smooth hill of ice. Make a statnn lvxuc- ca hx-+lqv-u52co 91f6q,xement concerning its acceleration.

  Under what condition is average velocity equal to the averageo 9w ywjn z9xd5rdyf ,fbs,8.9rm0 s;v of the object's initial and final velocityyxmz0ff ws8w o,br ;5d v9s9 dj.,yr9n?

  Objects A and B both start at rest. They both acceleratkgz;t fce6w6z;b8jh w)8mibym-x8eu0.o a -ke at the same rate. However, object A accelerates for twice the time as object B. What is the final speed of object A compared to that of z8i hzex bg fout;).-mej8w; -8bm0yk w6ak c6object B?

  Objects A and B both start from rest. They both acceln(c7s 2mf)u zherate at the same rate. However, object A h)sn7u(zc 2mf accelerates 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 the absence ofn0-s qr dll2x73tyv(v friction, which of the following 2v(3n 0ytslvdrx-q l7is true concerning its motion?

  When an object is released from rest and falls in t vkle15v9a9d9yvcgarp7n l,( he absence of friction, which of the following is tr597lvd pl9ra91k avygec (vn ,ue concerning its motion?

  Suppose a ball is throwns;7oup h 3atw;r28iud straight up. Make a statement about the velocity and the acceleration when the ball reaches th;t;iwpdahu78 sr2u3o e highest point.

  Suppose a ball is thrown. k19 so*oox wc .dhx3tkt9cm4 straight up. What is its acceleration just before it reaches w cdtok1o9c3o. hkxt*4 .9x msits highest point?

  Suppose a ball is thrown straight upr nn /+zxwl4g5, reaches a maximum height, then falls to its initial height. Make a statement about the direction of the velocity and acceleration as the ball is going ln5r4x+n /gzw up.

  A ball is thrown straight up, reaches a maximum heightpckybagmo)zo75c/55 j-w e- u, then falls to its initial height. Make a statement about the direction of the b z5 u/poykec55cja-) ogw-m7velocity and acceleration as the ball is coming down.

  Suppose a ball is throw q h8pah;* )9c;xuejxqn downward in the absence of air resistance. Make a statement concerning it u; ; qj)aep9hxhcxq*8s acceleration.

  Suppose a skydiver jumps f3wa5q ymwjdi8n4 2m:l rom a high-flying plane. What is her acceleration when she she reaches te3 jmnly8a iw2mw4 5:dqrminal velocity?

  A ball is thrown vertically upward +( fy wetjgftzhnn h )9na/(87with a speed v. An identical second ball is thrown upward with a speed 2y+ 7j tagnhz/en)nwt(hf(9 f8v (twice as fast). What is the ratio of the maximum height of the second ball to 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 e1(z ylw+ )j8pgm ip,ksecond later, ball B is dropped from the same building. As time progresses, the ie,y(1m+p kplgz8w j)distance between them

  Ball A is dropped from the top of a building. O hzid 66sf2*dvne second later, ball B is dropped from the same building. As time progresses, the difference in thez*i6 hv2f6dds ir speeds

  Two objects are thrown from the top of a tal+ 3usa.vyk,g al building. One is thrown up, and the other is thrown down, both with the same initial speed. usk3g.yv aa,+What are their speeds when they hit the street?

  A brick is dropped from the top of a building. A second brick ismkvk pm, n; ve3zi;8yh)juz., thrown straight down from the same building. They are released at the same time. Neglect air resistance. Compare the accelerations of thvnh,vie) z.3k;y;mmku8 ,jzp e two bricks.

  An object is moving with constant non-zero velocity in the +x ax3ex*a+1)judb8umnuaq 9 1 ryy is. The position versus time graph of this)y j+d81n* yua m3u1q9baruex object is

  An object is moving with constan+uvp(jk( vs+b (r z8ant non-zero acceleration in the +x axis. The position versus time graph ok sjub8 va+v+p(zr((n f this object is

  An object is moving with constant nol9a* k9ovu bpbp,:47h0t x slmn-zero velocity in the +x axis. The velocity versus time graph of this object isll*b 4hp:o,u mv9k t90sx7pab

  An object is moving with constant non-zero i2i, t1x;bpszr-lk4 s6b0 lkhacceleration in the +x axis. The velocity versus time graph of this i4isslbpkb 0;h1lx6tr -z 2,k object is

  The slope of a position vecfzp g.jx,lqpg+c ,h;0/k:h xrsus time graph gives

  The slope of a velocity versus timrw49e8h j o)s- dj6xrwdiy :./2bzlq ue graph gives

  The area under a curve in an acceleration versus t4o:m9s t-z xp4mw 6j)bzlq gicvt /)d2ime graph gives

  The area under a curve in a velocityvc7*75 *hk7tjn aaq1aiw h4lj versus time graph gives

  If the position versus time graph of an object is a horizontal line, the obgtqeff / 0wu lb34qdlf,1 tod1++ir6 n)cgny 7ject id+tutw6fen/ n4yrog ql1 f, digf37+ql 0)b 1cs

  If the position versus time graph of an object is a vertical line, the objec z7ami t 9y +h7j38nd/m0kbziyt isj a/ 9ykmtind0bi77hz+ y83mz

  If the velocity versua)l.+njga7q ooz0vh* /xna 2 ss time graph of an object is a horizontal line, the object io)l+x agvan.7 z*q0n o/shj2 as

  If the velocity versus time graph of an object is a straight line mak9r o8y 7dnk1gayq i5;xing an angle of 30 deg75rxqkiyy1g;a8 9on d rees with the time axis, the object is

  An object moves 15.0 m north and then 11.0 m myz,s q8fiui /of98c)2lz,ei south. Find both the distance traveled and the magnitude of the displacement y f i/q2,mzi,ef)o89iszlc 8uvector.

  A boat can move at 30 km/h j3j6xcnnwlq/( *ru 3l in still water. How long will it take to move 12 km upst ljn3/r6lqw( jn*cx 3uream in a river flowing 6.0 km/h?

  55 mi/h is how many m/s? (1 mke46 gcm6rspt18 aeu +;bcb(fi = 1609 m)

  What must be your averagef)b5 /;kshqu 3(sx zzw speed in order to travel 350 km in 5.15 h?

  A runner ran the marathon (ap8t:kivk 8 fl0bproximately 42.0 km) in 2 hours and 57 min. What is the average speed of the runner ft8lki :8k0vbin m/s?

  A car travels 90 km/h. How long does it take for it to travei s5c sv))odc5l 400 km?

  A ly (light year) is the distance that light travels in one year. The speedlhrxw 7a.o +r/dto3 v2 of 3 rwhxrvo.+a/otl 72dlight 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 straight road and you lbi /t1l wl9jf4;h5herook to the side for 4.0 s, how far do you travel during this inatt4t9/bje lh1lhf;rw5 i entive period?

  If you run a complete loop around an out-lzmrfhc; 7hjr mo/(i4k5 z.ti szr)/door track (400 m), in 100 s, your average velocity cj / ki. ( mlh)ozzm-z;s7trf4hr5r/ iis

  A polar bear starts at the North Pole. It travels 1.0 km south, then 1.0 km easu:qoy p,4x77 0d8r)j(pq9zonvjc exrt, 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 averagxr(8v,7 9 :redojz4onjq q0xyp )7puce speed?

  A polar bear starts at the Nortx:j1ppmo5d 9er hhlq +* b17nph Pole. It travels 1.0 km south, then 1.0 km east, then 1.0 km north, then 1.0 km west to return to its starting*l h:nhj9bd 5x7+reqp1 1mppo point. This trip takes 45 min. What was the bear's average velocity?

  You are driving home on a weekengdm(nyn 2do*8 d from school at 55 mi/h for 110 miles. It then starts to snow and you slow to 35 mi/h. You arrive home afym n 8gn*2(oddter driving 4 hours and 15 minutes. How far is your hometown from school?

  A motorist travels 160 km at 80 km/h and 160 kmc2sb:x(rqw: ts0xc9og5 7f sj at 100 km/h. What is the average g2oj7(wx5rfc:cs :tsxb9 0qsspeed of the motorist for this trip?

  A motorist travels for 3.0 h at 80 km/h and 2.0 h at 100 km/h. What is her avp 6;r;+ onqwkrerage s r;qo+pr knw6;peed for the trip?

  An airplane travels at 300 mi/h sozu95fowgzi ym63,r l v klaopi-5w7g 9kl- 7q,uth for 2.00 h and then at 250 mi/h north for 750 mig5u7zayo,3-k5-99,owg illl k 7rfizp6wvq mles. What is the average speed for the trip?

  In a 400-m relay race )c)s.zg.qkfd g z: .evpz q3.nthe anchorman (the person who runs the last 100 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. Whags3.dnep.zcq .q.gk f v) z)z:t 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 after 10 s. The eo6 (us sx9qpy87qy/ 4lo l6t bdgr;g5car's average velocity 978rgo4y6lbqp ld5oy(x gs tsu/q6 ;eduring deceleration was 77 km/h. What was the car's deceleration while slowing down?

  An airplane increases its speed from 100 m/s to 160 m/a/cc1l v0+5 7(gze w rv5exyucaa-k e+s, at the average rate of a0ck vxa ucl (a ce5/r7ew-+g+1z 5evy$15 \; m/s^2$. How much time does it take for the complete increase in speed?

  A car traveling 60 km/h accelerates at sv7j0/. zwgzo no /ow4the 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 rest and amx4y5h)a:y k9xr3fj k ccelerates 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. It then speeds up with a constant acce+/:; etmhtbqba jx/ x6leration ofqa e+//x;tbjm6bt h:x $2.0 \; m/s^2$ for 15 s. At the end of this time, what is its velocity?

  A cart with an initial velocity of 4.4 m/s experirtqwz- / c-d*jences a constant acceleration ofqt-wc/ r* -zjd $4.6 \; m/s^2$. What is the cart's displacement during the first 5.7 s of its motion?

  A bullet moving horizontally to the right (+x directi10xr xv4xunyar3bj.-u-h r b7on) with a speed of 243 m/s strikes a sandbag and pe.xyv1j a u4-0x-7br3hb urr xnnetrates a distance of 65.52 cm. What is the average acceleration, in $m/s^2$, of the bullet?

  A jet fighter plane is launched from+o 81p6kuhlc c 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, pou1+6c kh cl8what is the length of the catapult?

  A car starting from rest moves withaov , hzpynyg8 lsm-90p9b:p , 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?

  A car goes from 40 m/s to 80 m/s in a distance of 200 m. What is its sa*6:s3kl mtoaverage acceleration?3:tsakmos l6 *

  An object starts from rest and undergoes uniform acceleration. During t9-ubf: wqwvkm+ 9qm /;cdl*othe first second it travels 1.7 -v*bdlf :9/uq + tc;ow9qkwm mm. How far will it travel during the third second?

  An object is moving in a straight line with constant acceleration. nnjtia,*5me5f.8iv-m la l1gInitially it is travelingfg n ait 85all*imj1m-v5,.e n at 16 m/s. Three seconds later it is traveling at 10 m/s. How far does it move during this time?

  A car starts from rest and accelerates un 0zqaea (cp6( ju,yxw* fikw52iformly 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 road l17vcvn buue9pc12 p) 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 waiting at the i/s ij oz;/p7tgnti/g sp; jo/z7tersection 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 t1m:;r 0ijiws nhe surface of planet X where the acceler1iin :jm0r; swation due to gravity is $1.5 \; m/s^2$. What is the maximum height reached by the object?

  An object is thrown upkou34rr.j(7o y0t2kz uj- vgk ye0l4y ward with a speed of 12 m/s on the surface of planet X where the acceleration due to g2 3(4r0ru ulk7zo-tvy0jy. yj4ek okgravity is $1.5 \; m/s^2$. How long does it take for the object to reach the maximum height?

  An object is thrown u p86h1gm tpxs9pward with a speed of 15 m/s on the surface of planet X where the acceleration due to gravit 1pmsgth986 xpy 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 planet X whz+t ,-8a t4yu9 imozix;,oapaere the acceleration due to grat x ,u;ama9,-iyaz o 4t8oi+pzvity is $3.5 \; m/s^2$. What is the speed of the object after 8.0 s?

  Human reaction time is usually greater th iiyfu; 3xocz0ql)x+ q:ps w)ht8+wy/an 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 fall bef/iw y8xq03)x:wpyuc;si +)z toqh+ lfore you catch it?

  A ball is thrown upward at a velocity of 19h5kbx- bt3ye -:g)wwx7 byy3xy v sv88.6 m/s. What is its velocity after 3.00 s-:wkxs8y wbhby3 8yvxxt-7 gb) y3ev5?

  A bullet shot straight up returns tbl)exn23 a 7ww3ouhz-o its starting point in 13 s. What is the initial spe32w a3-hno)l zbxu7weed of the bullet?

  A ball is thrown straight up wf.4evk0* c quuith a speed of 36.0 m/s. How long does it take to return to its starting point?euqu vk. f40c*

  A ball is thrown downward from the top ,y gyp7a vk((iof a building with an initial speed of 21 m/s. It strikes the ground after 7.4 s. How high 7 y,ay (gpi(kvis the building?

  A ball is thrown straight up with a speed of 30 m/s. (only fi8b6zvk+x mco0 cl 17tvll in numerical value in the l 8 o6v7zc1+mtkcx0bv 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 with a speed 3, 3;hjzzdo6rmm-yd 4 ei0w wzbw;r9mwon-r9 of 44.4 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 3 seconds later.  (数值)  $m/s$
(e.) Determine the time at which the ball pass a point 12 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 12.0 m above the point of contact a second time.  (数值)  $s$

  In Fig. below, what is the velocity at l.wgj, (t4n df budse/,ma2o 4t = 1.0 s?

  In Fig. below, what is the veloci/cnllhi, w(b. +whhxhwfgrx :;-50qaty at t = 2.5 s?

  In Fig. below, what is the velocitstfdp 83e+fkj)qyh t v cc/:* a,:yi/hy at t = 4.0 s?

  In Fig. below, what is the velocit;cz 2b)8fajh ry at t = 5.5 s?

  In Fig. below, what is the average velocity fro+v e fnxuq* ed*tga4o ,6y)3pvm 0 to 4.0 s?

  In Fig. below, what is the average velocityb*4(yg wc 3tar7 /mgu 3yjm0kx from 0 to 6.0 s?

  In Fig. below, what iuc e- /v3i2y z7b3sdays the acceleration at 1.0 s?

  In Fig. below, what is tdu7.yz2+j /4qicx 2soi0 .q1zzk q qmhhe acceleration at 3.0 s?

  In Fig. below, what is the average acceleration from 0 to 5.0 s?53)n9xbfofy mnfm6+ , ot aun2

  In Fig. below, what is the average acz*;xw6.bvs sfceleration from 0 to 8.0 s?

  In Fig. below, what is the displa9 xnp7rqn)vfbhmvsg m: w(rixn ;vir+ -: w+/0cement from 0 to 8.0 s?

Does a car speedometer3ukazao3szw 8yofs7w* h(h3;e+fb7 j measure speed, velocity? {speed|velocity}

  An object can have a varying nz, xyi,(g-7id8mv: yaw5oqv speed if its velocity is constant.

  The velocity of an object can be nega fyn o eb7r,+qe51(v1 (ctvt(ggx7yyytive when its acceleration is positive.

  If one object has a greater speed tha 6 r3xo e,nov3da*k2ygos2ma(n a second object, the first must have a greater accelerm6*r,oke v23n3xy2 aas odg(oation.

  Two cars emerge side by side from a tunnel. Car A is traveling with a speed oful. fnc52.nkjcah+0ka /xo r 2 $60 \; km/h$ 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 inc 6 oi*to;zipz 2eh:h+sreasing in speed as its acceleration decreases.

  A baseball player hits a foul ball straight up into the air. It l7ll8 3t0x oxcmeaves the bat with a s lx83m7ct0xolpeed 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 7u 5w-;ws9uw97fyrhd dzii e2acceleration, how does it change if air friction isudi72wrfi 7yu5 w-sez9wd9 ; h ignored?

  As a freely falling object speeds up, what is happeninlxow4rx5zw ;3 sy5uf0m 03oth g to its acceleration, how wrt3h;o0mx 35 zw u0l yof54sxdoes it change if air friction CAN NOT be ignored?

  An object that is thrown vertiv*5eh*rz )l; ;uahalycally upward will return to its original position with za 5rh;;h* le)yu*l avthe 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 velocih;ohut)i ; pr:ppfsc / 5d05fvty and nonzero acceleration at the same time.

  An object can have nonzero velocity and zerstn4drlz+ +bp0j- c (oo acceleration at the same time.

  An elevator moving from the second floor to the fifth 0, gdbdta2; a.ut ;9xc6mliyofloor making no stops along the way has zero accelerati;x0 cldd.9i 2yt u;,mb a6otgaon all the time.

  A rolling ball moves from-ebnx:y .9esg $x_1=3.2 \mathrm{~cm}$ to $x_2=-7.1 \mathrm{~cm}$ during the time from $t_1=1.7 \mathrm{~s}$ to $t_2=5.1 \mathrm{~s}$. What is its average velocity?  (数值)  $cm/s$ (only fill in numerical value please)

  A particle at $t_1=-3.3 \mathrm{~s}$ is at $x_1=2.8 \mathrm{~cm}$ and at $t_2=3.2 \mathrm{~s}$ is at $x_2=7.6 \mathrm{~cm}$. What is its average velocity?  (数值)  $cm/s$

  A person jogs eight complete laps arounapu1j kybz,i(( e:v(qd a quarter-mile ($1 \; mile = 1609 \; m$) track in a total time of 7.3 min. Calculate (a) the average speed  (数值)  $m/s$ and (b) the average velocity    $m/s$

  A horse canters away fr f0a+mf .so om6mj-df7om its trainer in a straight line, moving 90 m away in 8.5 s. It then turns abruptly and gallops hajms0dfm76ofam o+-. flfway back in 4.7 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 frokbe242 mhin9nfy v ;j3m $11 \; m/s$ to $22 \; m/s$ in 4.1 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 frog gv01x ko8.v:/fkacfx 3sa-l 2jrl0xm $21 \; m/s$ to rest in a distance of 67 m. What was its acceleration, assumed constant?  (数值)  $m/s^2$

  A light plane must reach jogr 8wky(101up*5rf tj y+kna speed of $28 \; m/s$ for takeoff. How long a runway is needed if the (constant) acceleration is $2.7 \; m/s^2$ ?  (数值)  $m$

  A world-class sprinter can burst out of the blocks 5oib i3 x-hi;xto essentially top speed about iiibho x3- x5;$11.4 \; m/s$ in the first 13.8 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 uni6t7gdp*f g nu2formly from a speed of $16 \; m/s$ to rest in 4.56 s. How far did it travel in that time?  (数值)  $m$

  In coming to a stop, a car leaves skid mvi yt y*;vdtv+ /,3xx*qla(7rltc0p rarks 92 m long on the highway. Assuming a deceleration oyvr ;atiq7c v*x/y + lt,ptd 3(l0xrv*f $7.00 \; m/s^2$, estimate the speed of the car just before braking.    $m/s$