Suppose that an object/6/rcdvaoulyu 9l ate+:s6/s travels from one point in space to another. Make a comparison between the displacement and the distance trave6 os: as u/ydlce9rvlu/ a+6t/led.

  When is the average velocity of an object equal to the instantaneous velocied,hh fzbm es3 bin t )p,joy,20k-u;-ty?

  A new car manufacturer adverti2soxvr7w x73qxehd)n y t8v+;ses that their car can go "from zero to sixty in 8 s". This is a descript 7 3rvsqv+yxh)d;en2txw xo87ion of

  An object moving in the +x axis experiences an acceleratit;:wlbf g:cn -.t jv2bon of $2.0 \; m/s^2$. This means the object is

  Suppose that a car traveling to the East (+x direction) begins to o0d(4z a8kv xrp+ o4sbslow down as it approaches a traffic light. Make a statement concerning itxb8sd+ 4 pz0ar4okvo (s acceleration.

  Suppose that a car traveling to the West (-x direction) begins to sloui4a f ix w;*.v4 :bmqqadwe;4w down as it approaches a traffic light. Make a statement co44f ;a:mquadv wi.i;ex4q w *bncerning its acceleration.

  Suppose that an object is moving with a constant velocity. Make a fias p62x zmobv4p -v5:p bm,-(x6w epstatement concerning its vxbpm(f 5 mx24wpa,bp zspe-ov-6:6 iacceleration.

  If the velocity of an object is zezo, xw;b*n1k65xeck1rlj e 3kro, does it mean that the acceleration is zero? Support your answer wi6;1w,ke xlkb 3jox*n 1 5rkcezth an example.

  Can an object's velocity change direction when its acceleration is constant? Suhae q/6oaawa5 +6tg2rpport you eoaw 6+ga traqh/652ar answer with an example.

  Suppose that an object is ml fbo8mg0-ha9w a/-h aoving with constant acceleration. Make a statement concerning its motion with respect to 8fma0-lhw9 -bo /hagatime.

  Can an object have increasing speed while its acceleration is decreasinge2juf;4z i g :377.vtaueodqr? Supportg;2 j3i7zuore q : f.duta7ve4 your answer with an example.

  Suppose a can, after u;k99ysnec.hc 6 za)yan initial kick, moves up along a smooth hill of ice. Make a statement concerning its aczch y).69y keusn 9;acceleration.

  Under what condition is average velocity equal to the average of ty8fa i b6,n+fhhe object's initial and finayaif6,nb hf 8+l velocity?

  Objects A and B both start7 lw of,x5fe*qbg /qo+ at rest. They both accelerate at the same rate. However, object A accelerates for twice the t q*oo5 q/ wxge+,lbff7ime 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 accelerate at the samt*ag dg4a a )fcbh,4d(e rate. However, object A accelerates for twice the time as object Bbf44adac,(a)t*g h dg. What is the distance traveled by object A compared to that of object B?

  When an object is released from rest and fally mo5i+s8izj /s in the absence of friction, which of the following is ti 5j/oy z8+ismrue concerning its motion?

  When an object is released from rest and falls in the absence of fnmp qy; wn zm+0w,k*l/riction, which of the following is true conp+;k mln w0wqz,myn*/cerning its motion?

  Suppose a ball is thrown straight up. Make a stat4k ce;f 24eue:ds s/u3jrq.eo ement about the velocity and tj e4so/e2uk ce:sf3euq4 dr.;he acceleration when the ball reaches the highest point.

  Suppose a ball is thrown straight up. What is itscs+7r0y3h0q8 ok ryvr acceleration just before it reache0r7v8 y 3rkq0 +yhcorss its highest point?

  Suppose a ball is thrown straight up, reaches a maximum height, then fah l h58lgcv*gh: ft) a,v:t7ealls to its initial height. Make a statement about the direction of the velocity and accelerationlev :8 7hltv g):gth a,f5ca*h as the ball is going up.

  A ball is thrown straight up, reaches a maximum height, then fa2r(nvyr9cfw7f;pr/8j b2 gc zxr73gblls to its initial heifx r 8z2 gbpny2cr;bv93j 7wrrf c(/g7ght. Make a statement about the direction of the velocity and acceleration as the ball is coming down.

  Suppose a ball is thrown downward in the a-mi -ik-jmgbtu-g0v (nx5t (k bsence of air resistance. Make a statement concerning i(5( ji-kb0tgm--mx n tui vg-kts acceleration.

  Suppose a skydiver jumps from a( jw m 5ce/bq;ql;r:xw high-flying plane. What is her acceleration when she sl;:/5( ejwwmq xrq;bche reaches terminal velocity?

  A ball is thrown vertically upward with a speed v. An identical secoeo 9jw4 s r*l5k-6 jtajw(h1wa;ndp*cnd 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? (How many times higher does the jcdtsjw* 6alwonpraew4h9 - kj;(*1 5second ball go than the first ball?)

  Ball A is dropped from the top of a u .3+/v voqr,usgzvh*building. One second later, ball B is dropped f.g3os+vr*z,v uq u/hvrom the same building. As time progresses, the distance between them

  Ball A is dropped from t, ,a8wt*/3rhanioi y 8u *iornhe top of a building. One second later, ball B is dropped from the same building. As time iw n8/,3,h*ro o*iri a8 yatunprogresses, the difference in their speeds

  Two objects are thrown from the top of a tall building. One is thr7fh 5yg 7e2gnfh 6ghx9own up, and the other is thrown down, both with the same initial speed. What are th9gy fgn6ge h7h 75fxh2eir speeds when they hit the street?

  A brick is dropped from the top of a :twtvav h+2gbt, azs q/c12-sbuilding. A second brick is thrown straight down from :, tstb-hz+wtav12 /cav 2sgqthe same building. They are released at the same time. Neglect air resistance. Compare the accelerations of the two bricks.

  An object is moving with constant non-zero velocity 6cq2c* ;k009 xrywt w8xuurbgin the +x axis. The position versus time graphcy;cxqtxr8rk ub6 wwu2* 00 g9 of this object is

  An object is moving with constanvk-- k3kaja0 vt non-zero acceleration in the +x axis. The position versus time graph of thvv j-3ak-0k akis object is

  An object is moving with constant non-zero velocity in the +xkidgaq-zt)u 29)0nt17t m xw i axis. The velocity versus time gra)tdt) iqtau- xgi2mw0zk9n71ph of this object is

  An object is moving with constant non-zero accelelt)b72gja y m+ration in the +x axis. The velocity versus time graphyj+)m72t alg b of this object is

  The slope of a position versus time graphds4rdxn. 33pi gives

  The slope of a velocity versus time graph give;:1x* g9, y 0wjrtbgx mx.u gy7imj3wgh6w 9tds

  The area under a curve in an acceleration versus time graph gor4)d zyffgr 6v4 dv91ives

  The area under a curve in a velocity versus time graph g.ldtep, a*vqu2e2d g *ives

  If the position versus time graph of an object is6vv r t8.krqn1 a horizontal line, the object is.tr nkrq 8v16v

  If the position versus w320 gbf i13ol2vbv ectime graph of an object is a vertical line, the object is0b3wgb 2i f3e2oc1vl v

  If the velocity versus time graph of an object is a horizontal line, the objectp.5s)wj;h ht 9iopxc5o4ziv: )vbw +p izt5xj;9)w+vi h54oppc )ho isp.vwb : s

  If the velocity versus time graph of an object is a straight line mv2av xv-lo cjq2 y3mg)mh-am7n7y0) jaking an angle of 30 degrees wi3lm7 cn22amvmxh) ojy7v v--qgj)y0ath the time axis, the object is

  An object moves 15.0 m north and then 11.0u2pyd8/ ghw2x m south. Find both the distance traveled and the magnitude of the displacement vectuw/ 82yh dgx2por.

  A boat can move at 30 km/6llf p(tmz: j9.. plxjh in still water. How long will it take to move 12 km upstream in a river flowing 6.0 km/h?fl(j jlm6.zx pl :p9t.

  55 mi/h is how many mn xgw +lwgsp+e9 q508q/s? (1 mi = 1609 m)

  What must be your average speed inslziaxm;)5u0 x.k:e d order to travel 350 km in 5.15 h?

  A runner ran the marathon (approximatelyt .ab206 rh3lcou1 8n;nf izjs 42.0 km) in 2 hours and 57 min. What is the av 386ju ;fot1in0bshran2zcl .erage speed of the runner in m/s?

  A car travels 90 km/h. How long does it take for it to travel 400 p5ay qjp**vscu . 1 k:8nhubg1km?

  A ly (light year) is the distance that light)nebw/p3y(nc travels in one year. The speed of ln)3c /pbe (ywnight 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 7pobsr i6. m)z7eko8z-k w l6.n2 km/h along a straight road and you look to the side for 4.0 s, how far do you travel during t- ).rb k68 ksnilomzw.poe z67his inattentive period?

  If you run a complete loop around an outdoor track (b i;z -v(9lsv-wj kgt1400 m), in 100 s, your average velocity is(jwlsg;vb 1k v-z-i9 t

  A polar bear starts at the North Pole. It travels 1.0 km sou wg*vq8)jx/ x;fl z)zyth, then 1.0 km east, then 1.0 km north, then 1.0 km west to return to its starting point. T/ ;)z8 *jxvx lzgqf)wyhis trip takes 45 min. What was the bear's average speed?

  A polar bear starts at the North Pole. It travels 1.0 km south, then 1.0 k0mre7ekv hy5 d* abse os9f5tq,s7 4k4m east, then 1.0 km north, then 1.0 km west to return to its starting point. This trip takes 45yqs0*aks e55t fvos e79hrd74 ,m4bke min. What was the bear's average velocity?

  You are driving home on a weekend from school at 55 mi/h for rf9t4zpw * h:c110 miles. It then starts to snow and you slow to 35 mi/h. You arrive hompw :9zrcf 4t*he 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 is the avera)j0x/lco5 s :hno0smage speed of)nh:lo5saoj/ m0cxs 0 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 ikc3g30 bz9fddd jf/, o+vy3ro) c k8khs her average speed for the trip) +dc8ro,9db03 k gkdkv/3 fyco3fjzh?

  An airplane travels at 300 mi/h wy4mzgel 3-,,ux s g-yj ega13south for 2.00 h and then at 250 mi/h north for 750 miles. What isz-33,ly 4ae1 juggmxesgw,y- the average speed for the trip?

  In a 400-m relay race the anchorman (the person who runs the last 100 .qcsof(ik7su/s.k5ge .-whi 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 have when the team A runner starts the final leg of the race, in order that the tea so7-fs.qkci g .(5k.e /iwshum A runner not lose the race?

  A car decelerates uniformly and comes to a stop aft ndmx1ead 042a vvd9)ter 14 s. The car's average velocity during deceleration was 40 km/h. What was1av vex a)td4 2n9ddm0 the car's deceleration while slowing down?

  An airplane increases its speed from 100s )oi4vcs no*rf* (ha,dgra 49 m/s to 160 m/s, at the average rate of 9g4fhd rc )*n( a*os,ovsi4ra$15 \; m/s^2$. How much time does it take for the complete increase in speed?

  A car traveling 60 km/h accelerates a-kbj: sbx ;w4qt 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 rest and jwyam(*n8 - 4wviv vd4accelerates 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 wito (gvspv9i ro /zxua7b6;xf19 h a constant acceleration(osb;r1i paugv9xo f7v9/ 6xz of $2.0 \; m/s^2$ for 15 s. At the end of this time, what is its velocity?

  A cart with an initial velocity of 5.9 m/s experiences a constanw(nqp+ z:x5 xxt acceleration of zpxnq:+w5 (xx$4.5 \; m/s^2$. What is the cart's displacement during the first 9.7 s of its motion?

  A bullet moving horizont(m1mz3w;hp /y7 n cynk(u1jv cally to the right (+x direction) with a speed of 363 m/s strikes a sandbag and penetrates a distance of 26.96 cm. What is the average acceleration, in1w (p3(j kvn/m ;7nmh1cuzyyc $m/s^2$, of the bullet?

  A jet fighter plane i-;glb4 8tzfmai0ks03t; : me ze 7qipgs launched from 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 the length of the catapulsbgmi -:4mtip7a8e3ft0ke; 0lz g;zqt?

  A car starting from rest mvgr(mgb- a+ u9oves 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?

  A car goes from 40 m/s to 80 m/s in a distance of 200 m. What is its average xub)l0d u -2 pw/qntp*accelerationuu pt b2q/dp)w-lx 0*n?

  An object starts from rest and undergoes uniform accp2q/ww/,ehms,3x c cweleration. During the first second it travels 2.2 m. How far will it travel during the third w/cm xe hp2w ,3swq/,csecond?

  An object is moving in a straigmu0t h nv3anak9)q54- ;s lnlght line with constant acceleration. Initially it is traveling at 16 m/s. Three seconds later it is travelinan )quamh k3nvn-sgt l 4l095;g at 10 m/s. How far does it move during this time?

  A car starts from rest and accelevtu;+ gsdeb(1rates 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 u7kz2et5k 4n5me 1 ussa 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)

  At the instant a traffic light turns grees v50;twpbl9 gn, a car that has been waiting at the intersection starts ahead with a constant acceleration5;gsl 9wpt0b v 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 upwaraer*7mwv 4q3jd with a speed of 12 m/s on the surface of planet X where the acceleration due to gravite4 mw r*aqj73vy 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 sl yz5w;2/-rniwrk,y m/s on the surface of planet X where the acceleration due iww; rk-/yznsly52r , 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 on the surface of planet vwbo29p.b ab: (r9vkbX where thbb: pa9rov 2.bvk(w9b e 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 su:ma6e: .8/o s jllnfrerface of planet X where the acceleration due to gravity mlnf e6r:a 8.eo:/jsl 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 friend holx0geut.o: e/ x n(/xdyds a ruler between your fingers and releases it without warningndxeuyg/: (x/0oxte. , how far can you expect the ruler to fall before you catch it?

  A ball is thrown upward at a velocix-zkwm 6.nwwbm jpf( *+.uat 8ty of 19.6 m/s. What is its velocity after 3 x+*8k aw w(pj.m6un.mfz-wbt.00 s?

  A bullet shot straight up returnae+ uvzou979i9: mg;cj r (ipxs to its starting point in 5 s. What is the init: i99r; j+ez7xop(ucmau g v9iial speed of the bullet?

  A ball is thrown straight up with a speed of 36.0 m/s. How long does it take t8v 8bk7 bh 7s a4)eoj1rmrg8ebo return to its starting por mh77e8r )kjbag1b8s 8v4obeint?

  A ball is thrown downward from the top of a building with an initial speed o8 pje*s2/2cma)ohq e 3 cjei+bf 20 m/s. It strikes the ground after 3.0 s. How high is the buje+c q2cs*ap3 he /oebj)m 8i2ilding?

  A ball is thrown straight up with a spc9vkq7,z.8ecz zlwms.j7d5az(9 b sv eed of 30 m/s. (only fill in numerical value in the b. z7b9w7v s, kzzdj58m.a(eql c zvcs9lanks)
(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 up5uryj 0*j8 y f*fr2oad into the air with a speed of 29.3 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 1 seconds later.  (数值)  $m/s$
(e.) Determine the time at which the ball pass a point 5 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 5.0 m above the point of contact a second time.  (数值)  $s$

  In Fig. below, what is the ve s1 d1yb+r(xspza +p80 dqml6ilocity at t = 1.0 s?

  In Fig. below, what is the velocity at t :/wztmv *) nkh4sjp: p674n,h7iizlfbv ;wnk= 2.5 s?

  In Fig. below, what is the velocity at tykx6fg08a/ dby5 fge /u c /fa94ebye( = 4.0 s?

  In Fig. below, what is the velocity at t = 5;bzlg pff nd:0/(pf: o.5 s?

  In Fig. below, what is the average vz eq p 8kckom*b(2lx/p6wk0:ielocity from 0 to 4.0 s?

  In Fig. below, what is t,dp8t,/5epn wgzqv -lhe average velocity from 0 to 6.0 s?

  In Fig. below, what is the acceleration at 1.0 c9 jtzw qxkm9b(vs( 13s?

  In Fig. below, what is the accele;z h+67m;uuy 0aswi us;rci o-ration at 3.0 s?

  In Fig. below, what i0vxpc-07s mgqpzp 4f8 s the average acceleration from 0 to 5.0 s?

  In Fig. below, what is the average acceleration from 0 to 8.0,l yb6sa d71gls b+6hv s?

  In Fig. below, what is the displacement from 07n3oy f5i8y( vwx r7n gfq4d.u to 8.0 s?

Does a car speedometer measg.xu+ru5mgeo 48vzk. ure speed, velocity? {speed|velocity}

  An object can have aagc) p1ugn 3r :(8doit varying speed if its velocity is constant.

  The velocity of an object can be npu k 5g6igh/r9zff8 bz1tn n1:egative when its acceleration is positive.

  If one object has a greater speed than a second object, the first must havq8ab; zfrjwzi4w-0n( e a greaterir4;(f anq- wzbj 0w8z acceleration.

  Two cars emerge side by side from a tunnel. Car A is traveling with a 3fm,iqs z5jj 8speed 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 its acceleration decreases4 i;)9frct9 zg9r-s seapna/lwso7 -p .

  A baseball player hits a foul ball straightucpy6 3sohc.) up into the air. It leaves the bat w.oph)3cc6 uys ith 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 accelera 2j/ ioxu8e- adllws/ x,1jw3ction, how does it change if air friction is ig 8o3jl1,xx wu/a/j-isw2 ldecnored?

  As a freely falling object speeds up, what is happening to its acceleration,/6tb5ms+me f b how does it change if a bf5m e6s+t/bmir friction CAN NOT be ignored?

  An object that is thrown vertically upward will return to its original poshx.4zc3rs xo2nug +7xition with the same speed as it han4xgo.+3rzc xu27xsh d initially if air resistance is negligible. If air resistance is appreciable, how will this result be altered?

  An object can have zero velfe r. u7u7q z7i3 mwnap:4b olv89g.cwocity and nonzero acceleration at the same time.

  An object can have nonzero velocity and zero accele.v*jda :af-mrration at the same time.

  An elevator moving from the second floore (ozo c8j 0t v siuxyh;q(4l.7du.j:g to the fifth floor making no stops along the way has zero accelera;0g 4eduo(8sl v t :oij.7.hzjx y(cuqtion all the time.

  A rolling ball moves from s-mpg1 icz1b(n b;d i($x_1=2.2 \mathrm{~cm}$ to $x_2=-7.4 \mathrm{~cm}$ during the time from $t_1=1.2 \mathrm{~s}$ to $t_2=5.9 \mathrm{~s}$. What is its average velocity?  (数值)  $cm/s$ (only fill in numerical value please)

  A particle at $t_1=-4.2 \mathrm{~s}$ is at $x_1=3.1 \mathrm{~cm}$ and at $t_2=3.3 \mathrm{~s}$ is at $x_2=7.8 \mathrm{~cm}$. What is its average velocity?  (数值)  $cm/s$

  A person jogs eight complete h/ l9l2ntdx6 wm1fp bz a25+jslaps around a quarter-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 its trainer in a straight line, )fn*1q ykw5sl 6g9u;f g;np6z op5 uoumoving 94 m away in 10.0 s. It then turns*opfun kzu9nw5p61sy5;fo; q)l g g 6u abruptly and gallops halfway back in 4.8 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 pg0l u 2n)n9kipq cw6;x.t(/zht3vgr$13 \; m/s$ to $24 \; m/s$ in 5.0 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 frooun-v4*+ek ze m $20 \; m/s$ to rest in a distance of 79 m. What was its acceleration, assumed constant?  (数值)  $m/s^2$

  A light plane must reach a speejbqez6 w-9sf7d of $25 \; m/s$ for takeoff. How long a runway is needed if the (constant) acceleration is $2.1 \; m/s^2$ ?  (数值)  $m$

  A world-class sprintqw:-0 rw+u ck4iv) jybyg9n p7er can burst out of the blocks to essentially top speed aboutp wk4bivy-r:y q +cw u9)j0g7n $10.7 \; m/s$ in the first 12.6 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 1i bjq6w5t(x g*sfx, au 1kp6wspeed of $16 \; m/s$ to rest in 5.65 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 the highway. Assumin) bg61v cqnvq:g a deceleration of :cgvn6)qq1b v $7.00 \; m/s^2$, estimate the speed of the car just before braking.    $m/s$

  A car is behind a truck goivzo17km ea*44 c a0nguf8zmx- ng $25 \; m/s$ 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 less than 30.0 min. After 5str 2q-ms xc)exactly 27.0 min, there are still 115c xs-tqrm2 )s00 m to go. The runner must then accelerate at $0.20 \; m/s^2$ for how many seconds in order to achieve the desired time?    $s$