Suppose that an object travels fmhi(jt wzuuk:86huw 1:z b2u(rom one point in space to another. Make a comparison between the displakuuwt1ih8um j::b((hz2uz w6cement and the distance traveled.

  When is the average velocity of an object equal je lh*ex*cs g0g:4i arvbx,79to the instantaneous velocity?

  A new car manufacturer advertises that their car can go "fr1a ,yjqwg0d oug *:,dvom zero to sixty in 8 s". Th:d1od, qj0vg,guw ay*is is a description of

  An object moving in the +x axis experiences an accele4.xr/u8 iz3 svr cmj/eration of $2.0 \; m/s^2$. This means the object is

  Suppose that a car traveli2b ca/,cs ihlmvk j3xzhmz bh2275a 07ng to the East (+x direction) begins to slow down as it approaches a traffic light. Make a statement concerni lc2hhb z2axk s,vzi3hmc 0m2aj77b5/ng its acceleration.

  Suppose that a car traveling to u7qsj rdr,0y 7kh/cmy n3; *mxthe West (-x direction) begins to slow down as it approaches a traffic light. Make a statexyj3q*;n rh,ykm /0sum 7dc 7rment concerning its acceleration.

  Suppose that an object is movi+ ofnmuy ,blpj4;;19u vluyz2 ng with a constant velocity. Make a statement concerning itu4j y1ul,bpv 9m; lzoufy+2n;s acceleration.

  If the velocity of an object is zero, does it mean that the acceleration is zero7ko r39fqj*-oocn/ubq ,. dxo? Suppoqboud ojn-o3 .oqk/f* r9x7,c rt your answer with an example.

  Can an object's velocity change direction when its acceleration i8 y;j8fqlh+ys s constant? Support your answer with88lf +;syhyj q an example.

  Suppose that an object is moving with constant accelerjkk+ (e: ehmtw :3qxi2ation. Make a statement concerning its momk3(teki :qhxje :2+w tion with respect to time.

  Can an object have incy,p9-w g u4h7 bwmfm)ureasing speed while its acceleration is decreasing? Support your answer wpfw) mu,m9 7y-buh4wgith an example.

  Suppose a can, after an initial kick, mo2qip c,wvuaq5o+x +6rvyp 4 -s :amp-gves up along a smooth hill of ice. Make a statementxr g y:+ iv2,sp6cao+a-5-qp muwq4v p concerning its acceleration.

  Under what condition is average velocity equal to tha3nl) g): wk:gcjbzu2e average of the object's ing:acl2):ju3 nz bkw)gitial and final velocity?

  Objects A and B both start at rest. They both accelerate at thezg ig+307.vbrb3j ysa same rate. However, object A accelerates for twice the time as object B. What is thb.ayg7+gsr03 jbv i3 ze final speed of object A compared to that of object B?

  Objects A and B both start from rest. They both accelerate at the same rate. wo ow0:uo,o2b However, object A accelerates for twice the time as object B. What is the diuw0wo,2oo bo:stance traveled by object A compared to that of object B?

  When an object is release-+d)ihuuow q/(r :djhd from rest and falls in the absence of friction, which of the following is true concerninuj ):+dohruw/ i qd(h-g its motion?

  When an object is released f-1ba ,5z wzko/lwr/svrom rest and falls in the absence of friction, which of the following is true conc /waksz-1w,r5 /vlbozerning its motion?

  Suppose a ball is thrown straight up. Make a statement about the velocit*o44 di g*l1bmon8kiky and the acob1nm4i*o g ld*ik48k celeration when the ball reaches the highest point.

  Suppose a ball is thrown straight up. Wlgbnta1.* jiv ./5n, )u)isv opdqwx0hat is its acceleration just before it reach.. t*lv/,niw j5ivqd)ba01px ug)noses its highest point?

  Suppose a ball is thrown straight up, reaches a maximum height, tkwz8o.- 0 wwox7nt n18rwpe h;hen falls to its initial height. Make a statement about the direction of the velocity and acceleration as wr0.po z-xh8wn71w ktne8ow; the ball is going up.

  A ball is thrown straight up, reaches el0gi2q v8r0n8i a7lka maximum height, then falls to its initial he0 avrlqln78 k8 0iieg2ight. 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 absence of air res(o0z 841*bbvfznpiee istance. Make a statement concerf* eo41 i 8bvbzez(pn0ning its acceleration.

  Suppose a skydiver jumps from a high-flying plane. What is h/+) e.m zpwv qt,rl)a21daslrer acceleration when she she reachewl ,ma1q v lt.zr)e/s+p2dar) s terminal velocity?

  A ball is thrown vertically upward with ;c6yn jf,-265ktnj e-b c zsyzvj26kca speed 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 sef c6c,j 6jyzkyj5vc2zt 6kn;s--2nebcond 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. 2b8n ;pz px b7bv6thj( One second later, ball B is dropped from the same building. As t p8vtn7p bhj;(6b bx2zime progresses, the distance between them

  Ball A is dropped from the top of a buildio erzl 7*z-6lb :-mdy*gk q)xcng. One second later, ball B is dropped from the same building. As time pr-ybx-rzd6ll*o q : gm7)kz ce*ogresses, the difference in their speeds

  Two objects are thrown from the top of a tall building. One is thrown up, and t wjcqv snls.;8;k/f1phe other is pk ;nf jsc;vs8 w.l/q1thrown 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 building. A second brick is thrown straigh.nts e (k1p97ux c1hdbt down from the same building. They are released at the same time. Neglect aiphst9k1cxd7 u.n1( ber resistance. Compare the accelerations of the two bricks.

  An object is moving with constant non-zero velocity in the +x axis. Tmv4-zn hxn 8f f-pggz2/77yam y4s-7 9ssxyiche position versus time gra gcnz-74/ ams4 9- 2xmsz yg7s-fh8yxnpyvif7ph of this object is

  An object is moving with constant non-zero acceleration in the +x aq.2bl9tq (1 nqg1ozoo:n (luq o8r l*jxis. The position versus time graph of thn q.ol *un qq:1jorq8z19olb(lgo2( tis object is

  An object is moving with constan (ut.k9 drrv0gb1vta9t non-zero velocity in the +x axis. The velocity versus time graph of t 9b.vdtga( ruv9r10k this object is

  An object is moving with constant non-zero acceleration in thensei-- ev 4e qni/6;xv +x axis. The velocity vq -6ve e-4isenni; x/versus time graph of this object is

  The slope of a position versus bf/byqa 0sj 4(4v4a9ehlbox 6 time graph gives

  The slope of a velocityu uo( q,8mnx2m versus time graph gives

  The area under a curve in an acceleration versus time graph cof9px 66um 0quq)pa0gives

  The area under a curveejga, q1cw 4- qa)2nfv in a velocity versus time graph gives

  If the position versus time graph of an object is a horizontal line, the objepxd0sz5-v snra s6j9 vb va5et2p11jj (i*;ujct p6sjj -at95vd0*brnu xjis;vj1e(a 52 vzs p1 is

  If the position versus tiz4n*d4vxj qu 4me graph of an object is a vertical line, the object isnj *v qxd4z44u

  If the velocity versus time grap*7, ndci9yv6h f rf)ooh of an object is a horizontal line, the object is,9)n*forh vd y7f o6ic

  If the velocity versus t7a,kqv 1..y+ qg fyhenime graph of an object is a straight line making an angle of 30 degrees with the time axis, the objeh vqq. 1+., eaf7nyykgct is

  An object moves 15.0 m north and then 11.0 m south8d0m3. mau2s /gnc udh. Find both the distance traveled and the magnitude of the hd /mc0ads 2 un.8umg3displacement vector.

  A boat can move at 30 km/h in still water. Howr-zb- .wsr( gc long will it take to move 12 km upstream in a river flowing rsc(. -r-wzbg 6.0 km/h?

  55 mi/h is how many m/s? (1 mi = 1609 m7q *t0j n;g3etn, 2e,nbinjo sh-h 9vvs;5bim)

  What must be your average speed in ordeuoua nq,r; :)dr to travel 350 km in 5.15 h?

  A runner ran the marathon (approximately 42.0 kml:2cag8l -xni) in 2 hours and 57 min. What is the average speed of tc 8lil2-n ax:ghe runner in m/s?

  A car travels 90 km/h. How long does it take for it tx17 *tl/rcx0tz zc7* v glhib.o travel 400 km?

  A ly (light year) is the distance that light travels in one :o gajv,h/a,n year. The speed of light isvj,/,hanog :a $3.00 \times 10^8 \; m/s$. How many miles are there in a light year? (1 mi = 1609 m, 1 yr = 365 d.)

  If you are driving 72 km/h alx7 )ic 3zjx.wkma01 qlong a straight road and you look to the side for 4.0 s, how far dow)jk i3 .lmz cx7qx01a you travel during this inattentive period?

  If you run a complet;shw3y d04rp)vvk+p ie loop around an outdoor track (400 m), in 100 s, your averages3;pk4rw0+vpy h v) di velocity is

  A polar bear starts at the North Pole. It travels 1.0 km south,lawcy 9l i9r47 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 bear's average speed94li ryl7wca 9?

  A polar bear starts at the North Pole. i a xdk,2uavp+wgz45. It travels 1.0 km south, then 1.0 km east, then 1.0 km north, then 1.0 km west ia2,+ak.uxdw p5gv4 zto return to its starting point. This trip takes 45 min. What was the bear's average velocity?

  You are driving home on a:fjocw v)5 crre2bg5) weekend from school at 55 mi/h for 110 miles. It then starts to e)5 wvo)cb:g2j5cfr rsnow and you slow 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 c91knut-,tex ,vfv - i9:qudxat 100 km/h. What is the average speed of the motorist for thisqcuv -f tek 99,xv du:1ix,tn- trip?

  A motorist travels forx2+nm;7 qyrgq vp 4xd1 3.0 h at 80 km/h and 2.0 h at 100 km/h. What is her average spepyd 7xmg; 1x2n4q qr+ved for the trip?

  An airplane travels at 300 mi/h south for 2.00 h w 9o+0oabqllh ,p5op 4and then at 250 mi/h north for 750 ma, l+4o0lw q9bhoop5piles. What is the average speed for the trip?

  In a 400-m relay race the anchorman (the peqks bn3*n4,bp(at ,1,sklmxwrson 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. 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 n mp3 l ,bw bx*sqat,(,nk1k4steam A runner not lose the race?

  A car decelerates uniformly and comes to1pe:ud k sai2y4n.2s .el xx7s:i yuu; a stop after 12 s. The car's average velocity during deceleration was 61 km/h. What was the car's decelera: xyxsalud2 eep2 usu inyi.4.: 1k7s;tion while slowing down?

  An airplane increases its speed from 100 m/s to 160 m/s, at the average rate ofu( q*6zg/p *f4blf klz u4qfp b /( g*6lzl*fkz$15 \; m/s^2$. How much time does it take for the complete increase in speed?

  A car traveling 60 km/h acceleratq5ya 4ex6u;nq es 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 accelerates at bo/n1gvh+- y 4kxp7yl$4.0 \; m/s^2$ 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 w,s c iana+a,sm .jccr)g418x vith a constant acceleration r4ig,. jxansca+m s ,cc)av18 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 1.4 m/s experiences amit 7j7axjohya.7 f9 3x1ty.k constant acceleration ofji..t x oxaa7177thy j93kmy f $4.6 \; m/s^2$. What is the cart's displacement during the first 9.1 s of its motion?

  A bullet moving horizontally to the re tn5 u2sq.a0 ,we.vtjight (+x direction) with a speed of 499 m/s strikes a sandbag and penetrates a distance of 15.32 cm. What is the averag,uv5nqeswa2 et ..jt0e acceleration, in $m/s^2$, of the bullet?

  A jet fighter plane is launched from a catapult on an aircraft carrier. I lz.1 g5g2dgabt reaches a speed of 42 m/s at the end of the catapult, and this requires 2.0 s. Assuminlz1b2 gdg5.g ag the acceleration is constant, what is the length of the catapult?

  A car starting from rest movev3xps tc9lt2b ,km;6w 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+rk.q ;vbbtwn;+wn5 e/s to 80 m/s in a distance of 200 m. What is its average acceleration? n;vb wq;.nb5+twk +re

  An object starts from rest and undergoes uniform acck3lmz2v; jv8dd()cpp0o-xa k*0yi hyeleration. During the first second it travels 8.4 m. How far will it travel during the third skh)piy dvc8z o *0;x(vd aj2lm 0-3pkyecond?

  An object is moving in a straight line with constant acceleration. Initialjfs2 .9xbfki1 ly it is travelk2xf9 if s1bj.ing 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 accele7q hunb/7vxa ix :a);nrates 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 g0g1cg:s9z era2uhwu:+ + ofklx t1(t 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 *lv )se*prwme)ds-w5-nzj p / light turns green, a car that has been waiting at the intersection starts ahead /)lwpw*p-vs5* j rz mese-nd) 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 with9hxp n( 8u*6 s )p*xnu.uujxwp(4dcnj a speed of 12 m/s on the surface of planet X where the acceleration due to grancnup.s84xpjx*d* u(u hj x9wpn(u 6)vity is $1.5 \; m/s^2$. What is the maximum height reached by the object?

  An object is thrown upward zektfcq3+ +7ywith a speed of 12 m/s on the surface of planet X where the accele+7q+c f z3ykteration 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 4rmt v0noqes:c9)+sl a speed of 15 m/s on the surface of planet X where9m nr :ts)q+0sveo lc4 the 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 wit 4/c.1co;yeds l,xwns h a speed of 14 m/s on the surface of planet X where the acceleration due to grawc.c ;ds1s4/ elx yon,vity 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 *qp8 3 xdq 0;apzar-fxfriend holds a ruler between your;a3apz8-xqdrx qpf 0* fingers and releases it without warning, how far can you expect the ruler to fall before you catch it?

  A ball is thrown upward at a veloct53tv +,mh t4wtjl0e 7 icsd+city of 19.6 m/s. What is its velocity after 3.00 s3 ltws+v tmcd7c04et,h+ 5i jt?

  A bullet shot straight up returns to its starting poiuqcg1(sp0 h 8y0: uzpjnt in 18 s. What is the initial speed of t u yc8q0gh0 upsj(1p:zhe bullet?

  A ball is thrown straight up with a spsi8(vgjdkw0.dr u2-r xn/fe/hl1 i:peed of 36.0 m/s. How long does it take to return to its startingn gj/s1-80( r le idi:d2rw/uv khfpx. point?

  A ball is thrown downward from the top of5pu7 s zj;jf2ube/jw ( a building with an initial speed of 28 m/s. It strikes the ground after 4.0 s.( f5j7u;jw/ubze 2 psj How high is the building?

  A ball is thrown straight up with a speedxdbu74n ;7tk ihkspa( 3r6h, g of 30 m/s. (only fill in numerical value in the bln7 u( ag4ktb, 7kd6p;hir xh3sanks)
(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 e 3urzg+/aow3f;ioakz vx7.( the air with a speed of 29.1 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 velocity at t = 1.0 s(oeiw+zuo5sl . 7/z nn?

  In Fig. below, what is the velocity at t = 2.5 sj)qox7lx u)3b?

  In Fig. below, what is th(x /h7mm*(7dei e*ycbauhw, t e velocity at t = 4.0 s?

  In Fig. below, what is the 9by jbie 4o;t cx1dg6s+48y1fl9ehmy ah u)a9velocity at t = 5.5 s?

  In Fig. below, what is the average velocity from 0 to 4.0 s?hwgr pk6 k5 k3-h)jmp-

  In Fig. below, what is the averag n6f qymxd9yyaq74fb 92o 9 dqui0m6p5e velocity from 0 to 6.0 s?

  In Fig. below, what is the acceleration at2z vl5f8s oll z*;dj ilxb5l31 1.0 s?

  In Fig. below, what is the ace j7yb9 j3ue;dceleration at 3.0 s?

  In Fig. below, what is the average acceleration from 0 to neb4k q /;f la70a3rh;e5iafq5.0 s?

  In Fig. below, what is the average acceleration fr (qo2djjf(43rcgf.h nom 0 to 8.0 s?

  In Fig. below, what iska* . br7wh:a bivw zdn0v3s/6 the displacement from 0 to 8.0 s?

Does a car speedometer measure speed, velocity? {speed|velocity}q79g gs7ozy l**ssm3q)yy;j 4k;giyq

  An object can have a varying speed if its ve l+on27zjlh. wmi us+- p9)i*3svmhf+ta o0holocity is constant.

  The velocity of an object can be negative when its acceleration -5gdysgw- r/1otx9uw is positive.

  If one object has a greater speed than a second object, the firssigtg;h/s w9-y/j drz *r1o. ut must have a greater acceleratigryz*1dg.s /9 si-t o wr/h;juon.

  Two cars emerge side by side from a tunnel. C - h.. p 0b4ovohl,volhwg58vqar 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 fo30u(ap4y qxits acceleration decreases.

  A baseball player hits a f 9)wgedl( q h5n41dsqpoul ball straight up into the air. It leaves the bat with ag)( sl9h1n5qe4ddp wq 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 objtw 4r- u0db8.v(xubnlect speeds up, what is happening to its acceleration, how does it change if air fw0bnuxd u.lbt -4 r8v(riction is ignored?

  As a freely falling object speeds up, what is happeng6ks(k - tyi-9ml-dgbing to its acceleration, how doe- 6lks9giy mb(-dgk-ts it change if air friction CAN NOT be ignored?

  An object that is thrown vertically upward will return to its originab,6oinj;hnaik5qxu*ak3 7 ,zl position with the same speed as it had initially i6*unzi, 3 5akbhikxq;naj,o7 f air resistance is negligible. If air resistance is appreciable, how will this result be altered?

  An object can have zero velocity and nonzero acceleration at the sawl g/v ud3i9hns5d* /kme time.

  An object can have nonzero velocity and zero accel(di gw h6htskf7l:25.qn 9a uderation at the same time.

  An elevator moving from the second floor to the fifth floor making no stop3y lpl k0wkj3(71c sers along tc(33k 0s7yjl wklr pe1he way has zero acceleration all the time.

  A rolling ball movesxb gz;+n;1jzh ,lt*q s from $x_1=2.2 \mathrm{~cm}$ to $x_2=-6.0 \mathrm{~cm}$ during the time from $t_1=2.2 \mathrm{~s}$ to $t_2=5.5 \mathrm{~s}$. What is its average velocity?  (数值)  $cm/s$ (only fill in numerical value please)

  A particle at $t_1=-3.8 \mathrm{~s}$ is at $x_1=2.4 \mathrm{~cm}$ and at $t_2=4.4 \mathrm{~s}$ is at $x_2=8.5 \mathrm{~cm}$. What is its average velocity?  (数值)  $cm/s$

  A person jogs eight comp wika+iuio -/z42 4-gjeycgh n2edv71lete laps around a quarter-mile ($1 \; mile = 1609 \; m$) track in a total time of 8.0 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, moving 88 m away in 6 29xr ojqz5zr9.9 s. It then turns abruptly and gallops halfway back in 4.5 s. Calculatezox59jrz2 qr6 (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 frl-5h9rhz4a l nom $12 \; m/s$ to $24 \; m/s$ in 5.2 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 froem sje8p afz6dqv3 y p2k1u,a)yh:d9rv 9,x,jm $16 \; m/s$ to rest in a distance of 81 m. What was its acceleration, assumed constant?  (数值)  $m/s^2$

  A light plane must reach g(uxtjtd 4u;v kz+8r*a speed of $31 \; m/s$ for takeoff. How long a runway is needed if the (constant) acceleration is $2.0 \; m/s^2$ ?  (数值)  $m$

  A world-class sprintub3 +vtro1ko:7q:s,j 7 oimpe er can burst out of the blocks to essentially top speed abou:1vb7rju p3t km :ooeo,7sqi+t $10.8 \; m/s$ in the first 12.4 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 uniforml7zh y tx.2it:x5.1v)0 g qu*r4j f)xmit iuhgzy from a speed of $19 \; m/s$ to rest in 5.87 s. How far did it travel in that time?  (数值)  $m$

  In coming to a stop, a car leaves skid mar*kyk hy:.cs 0wks 92 m long on the highway. Assuming as .ywc*yhk0 k: deceleration of $7.00 \; m/s^2$, estimate the speed of the car just before braking.    $m/s$

  A car is behind a truck goinhgnt5w-y1 m kki, 61kfg $25 \; m/s$ 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 d17 *4th yapbp30.0 min. After exactly 27.0 min, there are still 1100 m to go. The runner ap* td h4b1py7must then accelerate at $0.20 \; m/s^2$ for how many seconds in order to achieve the desired time?    $s$