Suppose that an object travels from one point in space to another. Make a compa - w 3uchix2:1ajdx* q;rjvsx0rison between the displacement and the distance trav0h v cw2-3;dxjr sa: qixujx*1eled.

  When is the average velocity of an object equal to the instantaneous velocitajteaky3- 3 /::zzehly?

  A new car manufacturer advertises that their q7v m q.h;jht)car can go "from zero to sixty in 8 s". This is a description o;t.7qh v )jhmqf

  An object moving in the +x axis experiences an acceleration o.qn:h s4aof9po2 p.rxf $2.0 \; m/s^2$. This means the object is

  Suppose that a car traveling o5rv(27qmfs hmv6 c5nto the East (+x direction) begins to slow down as it approaches a traffic light. Make a statemeon2( 7mqvsf5chm 5v6rnt concerning its acceleration.

  Suppose that a car traveling to the West (-x direction) -+cg r4ng8 dwmbegins to slow down as it approaches a traffic light. Make a sta wgrncg8d-+m4 tement concerning its acceleration.

  Suppose that an object is moving with a constant velocity. Make a statement conu8obpfim2 vx0nfk. )+xtc ;2bcernin2k o i2bf)8m p;ucf xnbvt.0+xg its acceleration.

  If the velocity of an object is zero, does it mean that the acceleration isuz -big2r.cro - ,ex*1sw ufzl )3yrw, zero? Support your answerbz12gr o, .-y-f)w r 3ui,ezrxuwsl*c with an example.

  Can an object's velocity change direction when its acceleration is +.ibay 36 z- 7jnj byga0wvec8jsuuxvc21;; qconstant? Support you;7cngaj;jv1b- u+0 uisvcq86zw x a bye2.3yjr answer with an example.

  Suppose that an object is moving with constant accefqo+ jjna : 0s6;eo(ssch(5cl leration. Make a statement concerning its motion witha lsh(;6scjnoe5q0jf+(osc : respect to time.

  Can an object have increasing spd2 dt7 7 ohu9gegx:ke-eed while its acceleration is decreasing? Support your answer with an exampl t9ek27 gd-xd: o7guehe.

  Suppose a can, after an initial kick, moves up along a smooth hill of/sn5tls w9sz 2 ice. Make a statemennt2 ss 9z/5slwt concerning its acceleration.

  Under what condition is *onlvwdn1t8alz d;)- average velocity equal to the average of the object's initial and final veloz1dt wla ;8-n*dlv) nocity?

  Objects A and B both start at rest. They both accelerate at8;*fyrd0s ww0ss 4y dk the same rate. However, object A accelerates for twice the tfr0sd ;ss *80dyy4wkwime 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 samf kl,te4 7pn :y/kqgb2lx. l*mk 44wjme rate. However, object A accelerates for twice the j:m7k*p4bfl4 .mqxwlegk42/y ,nltktime 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 87 f, vlm9; wtcq,1-ghu:yq/fi slq srfalls in the absence of friction, which of the following is true concern hq,l, 8r ul97 csq :-w1ymfq;vgtifs/ing its motion?

  When an object is releasektr-ty7 vv/i( d from rest and falls in the absence of friction, which of the following is true concerning y(t7ti r /vkv-its motion?

  Suppose a ball is thrown straight up. Make a s,ckjf(ea- 6vy tatement about the velocity and the acceleration when the ball reaches the highest 6,(jcy-ekav f point.

  Suppose a ball is thrown straight p01t1dsf*wng up. What is its acceleration just before it reawtfgnp sd0*11ches its highest point?

  Suppose a ball is thrown straight up, reaches a maximum height,i hzxqeebl+ 74bp7r5o::i y 8c then falls to its initial height. Make a si b xr:4l7e o:zhbe785 icp+yqtatement about the direction of the velocity and acceleration as the ball is going up.

  A ball is thrown straight up, reaches a maximum height, then fcu(x 8lk;rannz4y4xl v f5k9* alls to its initial height. Make a statement about nakx8; 54 cvn4yz 9rklfl*ux(the direction of the velocity and acceleration as the ball is coming down.

  Suppose a ball is thrown downward in the absence4f1qz y5yo ytdg83p :c0qc(ra of air resistance. Make a statement cdo5pycq10gz qa43 ft(:yy8r concerning its acceleration.

  Suppose a skydiver ju,qui kb 9p*h8umps from a high-flying plane. What is her acceleration when she she reaches terminal velocit,b *ipu 8hqu9ky?

  A ball is thrown vertically upward with a speedj pejm )cvyzz1;tkw59- (bjn902v rcf v. An identical second ball is thrown upward with a speed 2v (twice as fast). What is the ratvcmfrp w19c)t2n(j0 vy9zj-bj5ze ;k io 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 )r(kgc/d*n xz the top of a building. One second later, ball B is dropped from the same building. As time progrend (zg/c xr*k)sses, the distance between them

  Ball A is dropped from the top of a ( 0- gm(twobz7sd9qmmbuilding. One second later, ball B is dropped from the same building. As time progresses, the difference in their z0st7mwg9o(-md m( bq speeds

  Two objects are thrown from the top of a tall building. One is thrown up, aqy30*sffi y k7pwf1z 0ypoc i6y,5 s*bnd the other is thrown down, both with the same initial speed. What are their speeds when they hit t*i fskfyy53*ic 0z,7s6f wb1yp pq0o yhe street?

  A brick is dropped from the top of a buil,/wplzyg9f 9t ding. A second brick is thrown straight down from the same building. They are relea/9y tf9l g,zpwsed at the same time. Neglect air resistance. Compare the accelerations of the two bricks.

  An object is moving with constant non-zero velocity in the +xuu 1w/g io6+ol vm ipc,oap++- axis. The position versus time graph of this objupp+o1/iam ov,lu w gc +i+-6oect is

  An object is moving with constant non-zero acceleration in the +x axis. The vx+yrt7*m y6g q7oro nc4)vr(position versus time7c 4on (y*rory7qmr) t+gvv6x graph of this object is

  An object is moving with constant non-zero velocity in the +x axis. The velocitvp.o8x 3ansa+ y versus time graph of this.a vx+no3a p8s object is

  An object is moving with constant non-zero acceleracfd : kwiu(o: r:s+*5jxz t.ndtion in the +x axis. The velocity ver:(dk +wzn*:jrc .f:dis utox 5sus time graph of this object is

  The slope of a position versus tim h;r84 6 ;dqnsih1xuzpya;b jbhq16+le graph gives

  The slope of a velocity versus time graph ;jtv ilz3y pkp29j1;s/ecsw g 47fft:gives

  The area under a curve f7u0eqgmx52din an acceleration versus time graph gives

  The area under a curve in a velocity vers* emnc 36z+tmc8plpo-na m0k0us time graph gives

  If the position versus time graph of aqr,;a yoym+eh eg2g8m f6+ 9bun object is a horizontal line, the object isu+,y rgeb + 9f8h;mogqymea62

  If the position versus time grapha3gfdfn wf26lbm -(x. of an object is a vertical line, the object is-f bn wgfd.6(xal2 f3m

  If the velocity versus time graph of an object is a horizontal liiwfd zoh3y t6tf4 *9o*ne, the object isdyooz* * w4t3ithf96f

  If the velocity versus timauka 54)uvlf* e graph of an object is a straight line making an anglv)au ka4fu l5*e of 30 degrees with the time axis, the object is

  An object moves 15.0 m north and then 11.0 m south. Find both the d:6abgg dhvo/ ar(-af0istance traveled and the magnitude of the dishad(a-ragg: o6f/ vb0 placement vector.

  A boat can move at 30 km/h in still water. H7 u8o1(p4pweih6 i ungow long will it take to move 12 km upstrew(81ne7p hogup i64 iuam in a river flowing 6.0 km/h?

  55 mi/h is how many m/s? (1 mi = )utuao5 (/i;2hgf nz j1609 m)

  What must be your average speed in order to 4uzx22:tfj ds0qm*uv travel 350 km in 5.15 h?

  A runner ran the mar,ek0rgu i+h9 iea 7k.2n6:h f; xrocjdathon (approximately 42.0 km) in 2 hours and 57 min. What is the average spf0kcoidr jh ;na .gu 2i:7r9,+kehe6xeed of the runner in m/s?

  A car travels 90 km/h. How long does it take for it to travel 400 km? uwk5behx):ir.n6d idd p*g4+2ba gp,

  A ly (light year) is the distance that light travra ) ),vz v;cdpifwt--g ,l1ccels in one year. The speed of light is a pz-fdl , ctc) 1g;ric,)v-vw$3.00 \times 10^8 \; m/s$. 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 lo.fp9m+rhg;jn2 nspc2ok to the side for 4.0 s, how far do you travel during this inattentif2nnrs c; p+hp2.gm9jve period?

  If you run a complete loop around an k) )3 p/wb vcbx-jsny1outdoor track (400 m), in 100 s, your average velocitsnwb cy1bvxpj))/ k3- y is

  A polar bear starts at the f:hwa. sig;3r rxs* +qNorth Pole. It travels 1.0 km south, then 1.0 km east, then+r s 3iagr*fxhqw:;.s 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 speed?

  A polar bear starts at the North Pole. It travels 1.0 ka b8+m,f:,lj 3yuph.hpmjn:ks eor0 8m 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 45 min. What was the beaj 0mmbpyln3r8,8ksf,hup:eoa :j h.+r's average velocity?

  You are driving home on a weekend from school2.yaa,yeoxs u4.l : yt at 55 mi/h for 110 miles. It then starts to snow and you slow to 35 mi/h. You arrive home after driving 4 he., s:4lty.2a xyoauyours and 15 minutes. How far is your hometown from school?

  A motorist travels 1 (yd 9/tcc 0)scbmafy/60 km at 80 km/h and 160 km at 100 km/h. What is the average speed of the motorist for cc d y0fc )am/s(ybt9/this trip?

  A motorist travels for 3.0 8dvh//e /)dt,- htsyvtywt 6bh at 80 km/h and 2.0 h at 100 km/h. What is her averags-e hv8tvy/ttbw)t6 y//d , dhe speed for the trip?

  An airplane travels at 300 mi/h south for 2.00 h and then yk4d *gf,oi1x fm(xyg* /-tkc7:k fdxat 250 mi/h north for 750 miles. What is tfkc-*xk4:y( fx*dgfo gytx7 d,m /ik 1he average speed for the trip?

  In a 400-m relay race the anchorman (th,: .7kr b3inx2miew gpe 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 wb i.:2xpnr e,m3 ki7g10.1 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 cz6 as(lqxchah ck(8/erg 19. fomes to a stop after 9 s. The car's average velocity during deceleration was 70 km/h. What was the car's decelefaxgeq kc(sl /.96z 1a(h c8hrration while slowing down?

  An airplane increases its speed from 100 pp jwa8n 6b64rm/s to 160 m/s, at the average rate of 4r8 p6jap6 wnb$15 \; m/s^2$. How much time does it take for the complete increase in speed?

  A car traveling 60 km/h acczn(u)*w8rsmj elerates 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 acu9p gh(x0/nke celerates 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 :.dep -th/q6kdy5 c hh10 s. It then speeds up with a constant acceleratioecyh6/5dt:d.-k q phhn 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 3.9 m/s experiences a constant oqdn ;9,.r2jovfp99jx h:yor)a1w otacceleration o1.do) yjx9,j;fqo2 pvr aw9ornth 9o:f $4.5 \; m/s^2$. What is the cart's displacement during the first 9.5 s of its motion?

  A bullet moving horizontally to the rg 9c4 tmkzp2s,.m+2 d,e vpl45arhlovight (+x direction) with a speed of 495 m/s strikes a sandbag and penetrates a distance of m2c m ed,44kl5oa.tv2 , gzrl ppvs+h973.21 cm. What is the average acceleration, in $m/s^2$, of the bullet?

  A jet fighter plane is launched from a catapult on,nfby ) on8 bdh41is fnz5s7r+ an aircraft carrier. It reaches a speed of 42f7)dr4z sb+nh8o n1 nyibf5,s 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 catapult?

  A car starting from rest movecz7l/e6az:jwar +w brw7 moc 93e5.rw s 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 a+ tf y;k+z7q4k ,ymegucckuk q,7;tz4ym++ yfe geleration?

  An object starts from rest and undergo89kaqik5 qd2n*h6wl zq3a2mqo ijp,6es uniform acceleration. During the first second it travels 9.7 m. How far will it travel during the third secon*hq9z i6kod 58kwqjq q,lp minaa2263 d?

  An object is moving in a straigh5oe4n x( q5ysbt line with constant acceleration. Initially it is traveling at 16 m/s. Thx eobq(5n s54yree seconds later it is traveling at 10 m/s. How far does it move during this time?

  A car starts from rest and accelerates unif6*3tmoa,g/ fyh wi- fgormly 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 can decelerate at ah9n26dntk t 2nbout $5.0 \; m/s^2$ 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 ctvpdned*;4c mv10c:y ar that has been waiting at the intersectio; *mve:t nd0vpcc1 d4yn 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 ol9-7j,i/ n idtvqfbna6xd.o557fap speed of 12 m/s on the surface of planet X whe7j5i7 alap.dvb q 5, -xnf6foio9t/ndre the acceleration 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 surfacm8rkzpc vr5he6f. l7 ,9l(a zqe of planet X where the acceleration dcqfv. 7(pe hrzl,z8k9r6ma5l ue 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 wi7ket6-t iwd-zbt+fn+ 72rxj mth a speed of 15 m/s on the surface of planet X where the acceleration due to gravity ite --f+6w mbtjtxn7rz7d i+2k s $2.5 \; m/s^2$. 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 surfacx-4ujib(m3 umkli.6 we of planet X where the acceleration due l iuk.bjx 34m(mwi-6uto 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 0.2 9nif+c2tdwnru0ff1 x4xr5f 10 s. If your friend holds a ruler between your fingers and releases it without warning, how far+ i 524x2 rf0frdfx1nnwt9 ufc can you expect the ruler to fall before you catch it?

  A ball is thrown upward at a velocity of 19.6 m/s. What is its velocity after 3zds, )k8l*ae1;g cn eujl-l :u.00 sl;*1 k ncuu- jlle: d8e,)zags?

  A bullet shot straight up returns to its starting podo q w,;u7;*x5(iwyq spqqte.int in 12 s. What is the initial sp,tye;(.po5 ;*qwuq q7 wdsxqieed of the bullet?

  A ball is thrown straight up with a speed of.f2 5jiln,y sr 36.0 m/s. How long does it take to return to its starting point, lnijr.2sf y5?

  A ball is thrown downward from the top of a building with an initial speed(on9 7 ;yxezsw2 3tnol of 10 m/s. It strikes the ground after 4.3 s. nw(on2xl;z3sy7 to 9e How high is the building?

  A ball is thrown straight up -qp0 kzvhd,ha ub8rge 5d2,/gwith a speed of 30 m/s. (only fill in numerical value in the bla-,pqrz28v 50hd, uggadeb/hk nks)
(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 nx4i.wew5t6 r8pq km:a speed of 27.9 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 7 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 7.0 m above the point of contact a second time.  (数值)  $s$

  In Fig. below, what is the velocity at t = 1.s77 fn*ij0kur6n 04 voolsa* s,d8izj 0 s?

  In Fig. below, what is the velocity at t = 2.5 fd 2sdm3 ,q)ucs?

  In Fig. below, what is the velocity at t 9tx p 3*d6tjnh ku(gd7= 4.0 s?

  In Fig. below, what is the veloci+z 6 lt e9uhmv;ov:7zmty at t = 5.5 s?

  In Fig. below, what is the average velocity from 0 to 4z q+ oxk2l6b.3)qb7u+tnqpme.0 s?

  In Fig. below, what is the avercq/ldpa6ad+n+/l au) age velocity from 0 to 6.0 s?

  In Fig. below, what is the ab4kq. 14cbe; f du3)6emzom fycceleration at 1.0 s?

  In Fig. below, what is the z,a 0bsgp*h0h au ,e*cacceleration at 3.0 s?

  In Fig. below, what is the average acceleration from 0 ceckucr9f/p5 l4b (f *r*l7tyto 5.0 s?

  In Fig. below, what is the average acshmhzy *,h( b7celeration from 0 to 8.0 s?

  In Fig. below, what is the displacement from 0 to 8.0/*o,o nik7f rd s?

Does a car speedometer measure9vmq( x:ylznhw.xg. )gmv0v , v1dv.f speed, velocity? {speed|velocity}

  An object can have a varying /.qn*3rhyut.4 sebwb x zk2j7speed if its velocity is constant.

  The velocity of an object can be negative when its acceleration is posp x5w +mkqt)qm7lw w 4,c--hliitive.

  If one object has a greater speed than a second objec1(r9ictprrj.: mbaxgc9z7 bw b ;c1)gt, the first must have a gr9ab;gx grc (tcb7i j 1:r9.zm) 1cprbweater acceleration.

  Two cars emerge side by side from a txjq 5z ec(8 u7b.786ju)ceep5l edo yyunnel. 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 de9h krrg/( ga-v*gz y gsno2f0 7zfi75ecreases.

  A baseball player hits a foul ball strats+ 2 auqyxgmg1 bn47/ight up into the air. It leaves the bat wit+agy2g4q mn7 tsx1u/bh 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 acceleration, how 9ugf4yr 8ftpgdq-6 82c4v fagaxr7p1 does it change if airr c9fp1u 7 v8fdg2-xq p8 f644yataggr friction is ignored?

  As a freely falling pt k cy0;s7rj.object speeds up, what is happening to its acceleration, how djt 0rp7cy.k ;soes it change if air friction CAN NOT be ignored?

  An object that is thrown vertically upward will return to it4k3vx k(wcyu5 s original position with the sak(4u3vyc5 kxwme 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 velocitpk0ccv.kolu7jc62*bd f5 l0 gy and nonzero acceleration at the same time.

  An object can have nonzero velocity and zero.6ctobnn2; cxem( b+n acceleration at the same time.

  An elevator moving from thp,- n *6lvqxmse second floor to the fifth floor making no stops along the way has zero acceleration all the- xv pm6s*nl,q time.

  A rolling ball moves f)gl 5y)gt8 f1apafwz)rom $x_1=3.1 \mathrm{~cm}$ to $x_2=-4.5 \mathrm{~cm}$ during the time from $t_1=2.9 \mathrm{~s}$ 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 $t_1=-4.7 \mathrm{~s}$ is at $x_1=2.3 \mathrm{~cm}$ and at $t_2=3.6 \mathrm{~s}$ is at $x_2=7.6 \mathrm{~cm}$. What is its average velocity?  (数值)  $cm/s$

  A person jogs eight complete lzgh lw30g2o2u 0h9yrkt /xe,maps around a quarter-mile ($1 \; mile = 1609 \; m$) track in a total time of 6.7 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 strai* (60b*k qthxsh rs3dl xhnr,5ght line, moving 93 m away in 13.4 s. It then turns r3xn 6*5 l*xhrqb s, (hdkhst0abruptly and gallops halfway 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 from hw4g2u -t;k hc$10 \; m/s$ to $23 \; m/s$ in 5.7 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 from 7 ,vtyqfo3 muis9b46 w$17 \; m/s$ to rest in a distance of 58 m. What was its acceleration, assumed constant?  (数值)  $m/s^2$

  A light plane must reach a speed ofs (vlgy gy 38cn9n:mv3ep;1s r $28 \; m/s$ for takeoff. How long a runway is needed if the (constant) acceleration is $2.2 \; m/s^2$ ?  (数值)  $m$

  A world-class sprinter can burst out of the blocks to essentially top speed abih qgdgr +e0ihn8gs9dz u8khh+do 3w,d .,( (zouthk 8.qdgwhgznudgd9,8(3, e rz0d +h+ ihio(s $10.8 \; m/s$ in the first 12.0 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 frn;c)l4oz msseaq(37v 1 g pmbm(g :e6jom a speed of $17 \; m/s$ to rest in 5.29 s. How far did it travel in that time?  (数值)  $m$

  In coming to a stop,zo/j t.v8pgspcq 3o9: a car leaves skid marks 92 m long on the highway. Assuming a devscp .9j3 ptgo8/qo z:celeration of $7.00 \; m/s^2$, estimate the speed of the car just before braking.    $m/s$

  A car is behind a truck going jy5b9i6a rc/j2tnq;g $25 \; m/s$ 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. A9uhze5/ r fxl6fter exactly 27.0 min, there are still 1100 m to go. The runner must then accelerater xhe 5lu6zf9/ at $0.20 \; m/s^2$ for how many seconds in order to achieve the desired time?    $s$