Suppose that an object travels from one point in space to anf1 q( xu/ikf oj/t5bzuee4;0xijn/:m other. Make a comparison between the disp5oqfjtfi 4uieu/:(n x/bk ze/1jm; 0xlacement and the distance traveled.

  When is the average velocity of an object equal to the instantaneous vei1bsvm u/8zcb4afvp r5 )pt32 locity?

  A new car manufacturer advertises that their car can go "from zero to sixty jorrk1 cuyv/r5/f 95 zin 8 krz /ovfy r5uj9r/ c51s". This is a description of

  An object moving in the +x axis experiences an acceleration oc,l38ghqd gi(f $2.0 \; m/s^2$. This means the object is

  Suppose that a car traveling to the East (+x dio qx b .+9j1;+flpv0vlstyc9d rection) begins to slow down as it approaches a traffic light. Make a statement concerning itds91+.clv+jq lt9 f yx0pbv o;s acceleration.

  Suppose that a car try//t9 7qe :khz5z6ln(7g qgs5x ka deeaveling to the West (-x direction) begins to slow down as it approachek x9 aegkd5 s65:h7 /lnq (zg7e/tezyqs a traffic light. Make a statement concerning its acceleration.

  Suppose that an object is move tu: xwou ziei+u15.1bib4qyd up7:) ing with a constant velocity. Make a statement concerning its accelerazot57iw 4qxdb: ui11e+e p.)u:yub uition.

  If the velocity of an object is zeroasyyrg 2 + cay5-92k0 vbgzhm5, does it mean that the acceleration is zero? Support your answg2sr5ya-m 2z+0h 5kyc y b9vgaer with an example.

  Can an object's velocity change a mk(s qx2*o xb2gsalhmy;v1z0-tr9;direction when its acceleration is constant? Sutlgah;1;0yv q( x9-rz m*b2o as2xskmpport your answer with an example.

  Suppose that an object is moving wit q, cvlfg4)zf42hx jt2h constant acceleration. Make a statement concerning itlc22 4vjqhz ,xft4) fgs motion with respect to time.

  Can an object have increasi*fe7iyij m81mev o. ,xng speed while its acceleration is decreasing? Support your answer with an examplif .o*mmveex1y8 7ji,e.

  Suppose a can, after an initial kick, moves up ah 9,;;1gabu:m v rkxoplong a smooth hill of ice. Make oa;b,hpmvr ;g:u9x1k a statement concerning its acceleration.

  Under what condition is average velocity equal to -1..ny f ( 45pk9wzfbqs mbk9lxqwaa9the average of the object's initial and final vel.l9 ms5ykbnqqf4kp aw1 .a-9zwx(f 9bocity?

  Objects A and B both start at rest7 t kykki1ru1u /xx(9io/ (wbo9t)dux. They both accelerate at the same rate. However, ob9 7 (t k(dr/)u 91tbiyuixk o1kx/xowuject A accelerates 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 frfyqo jjzsf d2c;.( (uy f, eon(,at/:uom rest. 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 compared ffjdu;(s(o(,u,t f/z 2: ay. cqoj nyeto that of object B?

  When an object is released from rest and falls in the absence of friction,c3(m93px ;ax ffmr/ li which of the following is true conc9mla/f ;mxf (3 pir3xcerning its motion?

  When an object is released from rest and falls in the absence of friction p (rvc63z(mc vwhtih(gol d64 ozy,q;a 8vh.5, which of the fy;vo t4 c3zg(m5i6(h8v6wac. d vzor,hhq(lpollowing is true concerning its motion?

  Suppose a ball is thrown)nn*g k.*c6 .g xqcvcg straight up. Make a statement about the velocity and the acceleration when the ball reacheg6xqc*ngg)kc v.n* c. s the highest point.

  Suppose a ball is throjw e:( jq2lhmf: gq*i(wn straight up. What is its acceleration just before it reache(f2 em( h:wjjlqg qi:*s its highest point?

  Suppose a ball is thrown sts2 swnt 50j9du.5bgy x1rpx ,xraight up, reaches a maximum height, then falls to its initial height. Make a statement about the direction of the veloci rn xs1920uw,dt gjpsxx.5by5 ty and acceleration as the ball is going up.

  A ball is thrown straight up, reaches a maximum height, then fal-7r ayws iec 6rkwii8/c8.l3lls to its initial height. Make a statement about the direction of the velocity and acceleration as tw6lc3-ieks r 8ilci7 8/r.ywahe ball is coming down.

  Suppose a ball is thrown downward in the absence of air resistance. Make a sr+qki4 5uxsr, u0+:9aafdw wstatement concerning its acceleratd kssu+wuqw,xa 0r i:fa+54 9rion.

  Suppose a skydiver j:qn p62i gjv(humps from a high-flying plane. What is her acceleration when she she reaches terminal velocjp26v:i (nq ghity?

  A ball is thrown vertically upward with a speed v. An identical second ball is ve50 :8nbgjcg pxt8gax- 6xr5thrown upward with a rctpxb 8n5:vg ja-ge0 gx5x68speed 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 second ball go than the first ball?)

  Ball A is dropped from the top of a builds b*slmm+3o/y ing. One second later, ball B is dropped from the same building. As time progresses, tslo3 sy/m +*bmhe distance between them

  Ball A is dropped from the top of a building. One smyt5ioc s) e2*econd later, ball B is dropped from the sameie omsc 25t)y* building. As time progresses, the difference in their speeds

  Two objects are thrown from the top of a tall building.-4mx9d*s zs;.b9bg at8 fxxcgjjm+)g/og0 h b One is thrown up, and th j.h9s)gg bmf4xcx;-x09+sgza *d8mj b /obtge other is thrown down, both with the same initial speed. What are their speeds when they hit the street?

  A brick is dropped from the top of a bunzcm -0qrq4c 1ilding. A second brick is thrown straight down from the same building. They are released 1-zrcmcqq 0 4nat the same time. Neglect air resistance. Compare the accelerations of the two bricks.

  An object is moving with constant non-zero velocity in the +x axis. p9czgs we 4 2pc6d*f4xThe position versus time gw*9fp6 xc44p2 gcd zesraph of this object is

  An object is moving with constant non-zero acceleration in the +x axis. The pos* i r e6o :9uwx0 rsijryqxjc.n5;py72ition versus time graph r;y*e 5 :nipyu 7o6jirrs j .cqx9wx20of this object is

  An object is moving with constant non-zero velocity in the +x axis. The velocitxu.t1k +k1jew y versus time +u tkxj e1k.1wgraph of this object is

  An object is moving with constant non-zero acceleration in the +x axis. Ty1ocqvt*gn7i.s2 ec:*r 7k3zj;z r nghe velocity versus tz *cye; 2n7:1* zstc iv rngq3.okjgr7ime graph of this object is

  The slope of a position versus time graph gixlau)5l.7dus wgw4 m,ves

  The slope of a velocity versus time graph s 8(hsi )8b-u6qyrsghgives

  The area under a curve in an acceleration versus /2 gr/),ner4 ok fab1n+whudytime graph gives

  The area under a curve in a velocity vers-+/ bvgw)l w)dk6fd6kj (gdasus time graph gives

  If the position versus time graph of an object is a horizontal line, th; .zouxjc( x-le object i.u ;cj(xo- lxzs

  If the position versus time graph of an object i7ctxf2iv +4fa s a vertical line, the object is7cxif+ taf 42v

  If the velocity versus time graph of an object is a horizontal lfcgt-hkv 64: bine, the object is 6-c 4bkgfvht:

  If the velocity versus time graph of an object is a swk :r70hedja (-ce:qstraight line making an angle of 30 degrees with d 7(ashje-:eq0 c:wr kthe time axis, the object is

  An object moves 15.0 m north and then 11.0 m south. Find both the distance c+i8z/d 3jx.rz lvzvpc+18k ;tnzg8 ltravel+vv8i 3gzkcl/;.jctz zl1 x+rn88pdzed and the magnitude of the displacement vector.

  A boat can move at 30 km/h in still water. How long will it take to move i.2t i z4e blvd;x,p4d12 km upstream in z.ld4dte;2i 4bx ,ivp a river flowing 6.0 km/h?

  55 mi/h is how many m/s? (jp3m q81 oxzb01 mi = 1609 m)

  What must be your average speed in order eir2bnwr2ror9;(v 3 w to travel 350 km in 5.15 h?

  A runner ran the marathon (approximately 42.0 k+zoc tp 6c*d-xm) in 2 hours and 57 min. What is thcoz*x6+td -pc e average speed of the runner in m/s?

  A car travels 90 km/h. How long +h61v0m6rf kxajx b. 8l38 k4ypbijbcl/i tw5does it take for it to travel 400 km?

  A ly (light year) is the distance that light travels in one year. The speed ofr f07:y rz2/yaxn)gkc5 ko 4oros.g 6j light iscyog)s a6or2kn40: f .jg7/k zxor5y r $3.00 \times 10^8 \; m/s$. 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 look to the w39wjfow692e nj5 jqe side for 4.0 s, how far do you travel during t5wf oq9ejj236j 9nwwehis inattentive period?

  If you run a complete loop around ankat0mb,-xv n cx 0g2;c outdoor track (400 m), in 100 s, your average veloc0 -ctm,b; x0v2cgnaxk ity is

  A polar bear starts at the North Pol 8 .abp0clepynq+p+9j4:axd me. 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 point. This trip takes nm qe+4p+ p xy9cjlap08a:db. 45 min. What was the bear's average speed?

  A polar bear starts at the North Pole. Itc,px p*x* n,cv travels 1.0 km south, then 1.0 km east, then 1.0 km north, then 1.0 km west t vxp *c*p,n,xco return to its starting point. This trip takes 45 min. What was the bear's average velocity?

  You are driving home on a weekend from school at 55 mi/h for 110 miles. It th5hef w 62zfh ..h)fwycen starts to snow and you slow to 35 mi/h. You arri.h ww.5 fchf)2z6ey hfve 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 10bc-h*q 8yvrxrz f6 2e70 km/h. What is the average speed of the motorist for thisbvqrzchrx6f-7* y e82 trip?

  A motorist travels for 3.0 h at 80 km/h and 2.0 h at 100 km/h. Whp3jirog- .t.j fx *f 3n0r6jqwat is her average speed fo.on3jq.6frj x*ft r-gi3p 0wjr the trip?

  An airplane travels at 300 mi/h south for 2.00 h and then at 250 mi/h north fx d3 1pyr,8pjxy g/nwg(x o,r/or 750 miles. What is th/n1yx( pyg/ xg38jd orrwp,,x e average speed for the trip?

  In a 400-m relay race the anchorman (the person who runs the last 100 m) r 1:8kb wdghgcos5:.6eq-zkg for team A can run 100 sh6: z: 8qc.5kk-brggdgow1 e 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 team A runner not lose the race?

  A car decelerates uniformly and comes to a stop ab zu+rjfsl/dbogey+ /24a,h )fter 13 s. The car's average velocity during deceleration was 62 km/h. What was the car's deceleration whofbeg24u j,l+rz+y /)ah ds b/ile slowing down?

  An airplane increases its*5lel r z 6p06jiebvp( speed from 100 m/s to 160 m/s, at the average rate of je0pilzb 6p6(5rlv* e $15 \; m/s^2$. How much time does it take for the complete increase in speed?

  A car traveling 60 km/h accelerate+jp zar4t/w3rg)ffx 5s 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 rest and accelera8l*lowk5l 5gy tes 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 accelerat wzhcyj(, 0x*)b*0kri) wgt zfion ofzct )rfz i0*gw*y0j (hbk),wx $2.0 \; m/s^2$ for 15 s. At the end of this time, what is its velocity?

  A cart with an initial velocity of 5.7 m/s experiences a constant accelerawb a,7exkos7 ok 842kation of w xskkkb o774ao e2,8a$1.9 \; m/s^2$. What is the cart's displacement during the first 7.7 s of its motion?

  A bullet moving horizontally to the righ ;vcb(fgzu.igtk+/ 9ot (+x direction) with a speed of 222 m/s strikes a sa;t gco(/z f9gbv.ik u+ndbag and penetrates a distance of 45.48 cm. What is the average acceleration, in $m/s^2$, of the bullet?

  A jet fighter plane is launched from a catapult1,kymn.b yih;y nm5:w 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 ik ih;1y5nynmy .w m:,bs the length of the catapult?

  A car starting from re*0t2bh:glsg;5zt dx 8n oagv8 st moves 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 kheuwv 3k2mmtz/g -f2/5 h-4*(k fv uv9cebrwm. What is its average accfk5uv-v/fkcehr4huzvk g/m e 223wbt *w( -m9 eleration?

  An object starts from rest and undergoes uniform acceleration. During tquxd7 on;,*1xixp f9h he first second it travels 6.4 m. How f;pf9iqh1uxoxd*n, x 7ar will it travel during the third second?

  An object is moving in a straight line with constant acceleratiougma/7x:sk .rty9 )nsic+ tt/+3pxq an. Initially it is traveling at 16 m/s. Threeasucnt+3 q / x.pgasxi )rttk:7+9my / seconds later it is traveling at 10 m/s. How far does it move during this time?

  A car starts from rest and acceleralzd+7nzs3xs t 63cvqn37 v+yrtes 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 roa92sf1 t)jx hzalwhc ; 9m1yj.ld 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 1sg uk0rr7xm:x/zb4lrrwg 91waiting at the interrmr 7xzr91 sgk4xwl/b 0 :ru1gsection 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 spxjfw:2v/ t1sf eed of 12 m/s on the surface of planet X where the acceleration due to gravity is12 svfw/ fj:tx $1.5 \; m/s^2$. What is the maximum height reached by the object?

  An object is thrown upward with a speed of 12 m/s on thezoo +j dr3,ef- surface of planet X where the ed3- of,o z+jracceleration 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 d,w3,buk 3qhzp7mq4w of 15 m/s on the surface of planet X where the accelera7z4,3 b3wdk h,qmp uwqtion 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;dqvxwv/; gf95-a7po* s(uqx, k wcq a/s on the surface of planet X where the acceleration due to/qo*dpu kvcx-5 q7a(gv; 9qas; ,wwxf 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 friend tcw)or9fr d a4cy 7h*0holds a ruler between your fingers and releases it without warning, how far can you eroh 940c7t dyar)fc* wxpect the ruler to fall before you catch it?

  A ball is thrown upward f7 p+p16eq it+zssp3)hbh- txat a velocity of 19.6 m/s. What is its velocity after 3.00-xs1 tpqf+76)z3i h sbe+hptp s?

  A bullet shot straight up returns to its starting point in 16 s. What is ual) r9tgx)l: the initial speed of the bulletla ur)lx g:)9t?

  A ball is thrown straight up with a speed of 36.0 m/s. How long does it take,t5)k-aygs fi k* (2lmxirk a- to return to its starting poinr k,fkax -5)-sla2mit(ig y*kt?

  A ball is thrown downward from th;nd1i-y2kd xd, .lcmee top of a building with an initial speed of 20 m/s. It strike dd- kmex1c;ldy2 .,ins the ground after 1.9 s. How high is the building?

  A ball is thrown straight up with a speed of 30 m/s. (only fill jrk-ir a7n rk6l+ 1wp0in numerical value in the bkp7r-0k+w1 rijlr na 6lanks)
(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 they .oekq * dsq6mxh4:)k9/ czfn air with a speed of 45.6 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 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 t = 1.0 s7:zvc e1su8bx1q6j zi?

  In Fig. below, what is the8y-9z. d nk*rn0twjkwj og9:a velocity at t = 2.5 s?

  In Fig. below, what is the velocity at tqb.9 q+yr8scy = 4.0 s?

  In Fig. below, what is the velocity at t 0kfa1nia* ve -p8/gck = 5.5 s?

  In Fig. below, what iylg5s5f + h9 jejd,j+jesu557;x6m h x4oacoms the average velocity from 0 to 4.0 s?

  In Fig. below, what is th n4zg+-1sx6 r66yjppl clzg2 lw ,7wwhe average velocity from 0 to 6.0 s?

  In Fig. below, what is the acceleration asfhrk v -o7boo7.;o 2kt 1.0 s?

  In Fig. below, what is the acceleratiojzp :yybo7o98 b- 8xxojxo31on at 3.0 s?

  In Fig. below, what is the average acceleration fxhmz-, xz .vj.rom 0 to 5.0 s?

  In Fig. below, what is the average acceleration from 0 to 8.0 kd r6x,)eixr3tl0 j1x s?

  In Fig. below, what is the displacement from 0 to5if-r1 q e-sqw 8.0 s?

Does a car speedometer measure s + gycswu.qt6 cq65uw(peed, velocity? {speed|velocity}

  An object can have a varying speed if its velocitvm p g;6k 0+us3.nnwfvy is constant.

  The velocity of an obje+( 8ho eak: hgw6*io ;ki2bwwoct can be negative when its acceleration is positive.

  If one object has a greater speed than a second o b1ytjsmu*:q e 325vuop p:8pkbject, the first must have a greaterqt 825e: uojy*p1pup3 vskbm: acceleration.

  Two cars emerge side by side from9itxtmtd y)-518sfj f 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 as its acceleration dn l(aes.sv59yecreases.

  A baseball player hits a foul ball straight up into the air.pzc1.z 4g9hy8/aijc t It leaves the bat with a speedp cc tjag1z./y4z89hi 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 acceleratio7t,,+jjk6pln , uqeofn, how does it chanen k ,q,ju+,6lfjot7p ge if air friction is ignored?

  As a freely falling object speeds up, what is happening to its accele(r+i1v9a(y6b c8 xeirpf us2 mration, how does it change if air frictionar (x i6y9 +(28bv1 rpecmfusi CAN NOT be ignored?

  An object that is thrown vertically upward will return to its original posia m(oj4+n* .uh dx5shri(6gyftion with the same spe45gy m(sfrhn *j. da( ioxu+h6ed 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 nonzero accel bka).fakq2m+eration at the same time.

  An object can have no0+ lzx woh grkuw.hu:754t)aznzero velocity and zero acceleration at the same time.

  An elevator moving from the second floor to the fifth floor making nop sv.gb*5rg 8kshox z*:p9d8n stops along the way has zero accel9bx:pshk.*grzgp*o8 d5 n8sveration all the time.

  A rolling ball movesim:. ur9y pv*d( czfe8 from $x_1=2.4 \mathrm{~cm}$ to $x_2=-5.4 \mathrm{~cm}$ during the time from $t_1=1.5 \mathrm{~s}$ 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 $t_1=-4.4 \mathrm{~s}$ is at $x_1=2.8 \mathrm{~cm}$ and at $t_2=3.3 \mathrm{~s}$ is at $x_2=8.3 \mathrm{~cm}$. What is its average velocity?  (数值)  $cm/s$

  A person jogs eight complete laps around a quarter-mc5,z737cpz8 bdv cqts ile ($1 \; mile = 1609 \; m$) track in a total time of 6.1 min. Calculate (a) the average speed  (数值)  $m/s$ and (b) the average velocity    $m/s$

  A horse canters away from its trainer icm j i(iac5fmmz5ub f;wl+ b3buc62- 2n a straight line, moving 87 m away in 8.8 s. It then turns abruptly and gallops halfway back in 4.8 s. Calculate ( 2 lzj mm acfwm (;2c-56ifib+5c3bbuua) 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 from4 u llg3(vy3vy $13 \; m/s$ to $25 \; m/s$ in 4.6 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 from7 v;:j nl1vqik $22 \; m/s$ to rest in a distance of 64 m. What was its acceleration, assumed constant?  (数值)  $m/s^2$

  A light plane must reach b-tnd g8 h4gwb)5vo -wve*jii,q8 f/ra speed of $26 \; m/s$ for takeoff. How long a runway is needed if the (constant) acceleration is $2.1 \; m/s^2$ ?  (数值)  $m$

  A world-class sprinter can burst out of the blocks to essentially top speed ahzq m5gl g)f 78vzl0a7boutmg5gaz0fqh l 7z)7 8vl $11.2 \; m/s$ in the first 11.5 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 au1 ap9jeobnbmr6n 5*+ speed of $17 \; m/s$ to rest in 5.76 s. How far did it travel in that time?  (数值)  $m$

  In coming to a stop, a car leaves skid marks 92 ):-;i6ofq b yhe*bpnw m long on the highway. Assuming a decelp:niehyof ) 6;wbbq-*eration of $7.00 \; m/s^2$, estimate the speed of the car just before braking.    $m/s$

  A car is behind a tr ai348 xvoi05p3wayxl uck going $25 \; m/s$ 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 compqn l +5*slok g,8oz3xh3blx c1lete the 10,000-m run in less than 30.0 min. After exactly 27.0 min, there are still 1100 m to go. The runner must thcsoh+5 lzlxq,*833l1gn kbo x en accelerate at $0.20 \; m/s^2$ for how many seconds in order to achieve the desired time?    $s$