Suppose that an object travels from ony :1j i19ecn ec4y1giwe point in space to another. Make a comparison between 1eg yc1 : wcini4yej91the displacement and the distance traveled.

  When is the average velocity of an object equal to the instantane bvr4uw irkz/m 12h;es)dn -r)9opd 7bous velocity?

  A new car manufacturer advertises t/ - d)ibpg3uvk97nx cihat their car can go "from zero to sixty in 8 s"i7 9 cvnb- pxu3ki/dg). This is a description of

  An object moving in the +x axis experiencesx:cr+m:l fux *.cjq,l an acceleration of $2.0 \; m/s^2$. This means the object is

  Suppose that a car traveling to the East (+x direction) begw;a3 sx*md2i)erd on 87qrz6 rins to slow down as it approaches a traffic*r zirr67s32)o waqexd8mnd; light. Make a statement concerning its acceleration.

  Suppose that a car traveling to the West (-x direction) begins to slow do 66g1i;kxle7 pn.*a)rarwv tfp0 jcu65 w2wnmwn as it appr6cawr uww1 nirkpp2vgj6te70lf *x65a ) mn.;oaches a traffic light. Make a statement concerning its acceleration.

  Suppose that an object is moving with a constant fz 2 kuw *37g 8qc-qwcblcdc(*velocity. Make a statement concerning its acceleration.8uck*(dcq z2q *-wb f3c7lwgc

  If the velocity of an object is zero, does it mean that the9x :cgi ()vwbk acceleration is zero? Suppg(xbv9ic) :k wort your answer with an example.

  Can an object's velocity change directfv8 .;d lxk 6pj/, zx;,srvfomion when its acceleration is constant? Support your answer with an esdxv,z; f;xvl8f6rojkm/p , . xample.

  Suppose that an object is moving with cono1jdd2o;uq w7 ludmrt0 )q*+mstant acceleration. Make a statement concerning its mmutm71r02+do*jl qd ;qod)uw otion with respect to time.

  Can an object have in,pimf x:(m ng*creasing speed while its acceleration is decreasing? Support yo:gm fmpn i,x*(ur answer with an example.

  Suppose a can, after an initial kick, moves up along a smooth hill of 7avm/hf vyd d: :ikeu0b8uvw.:6f9i xice. Make a statement concerning its ie aw mxbi::d fyv.kv8 uf679 0dhv:/uacceleration.

  Under what condition is average velocity equal to the average :qsk k5s2/wucmxo-lp0c t5x5of the object's initiax -5 lcsmtxwk/kc52suq05o :pl and final velocity?

  Objects A and B both start at rest. They both accelerate t eaix +8rt)5eat the same rate. However, object A accelerates for twice the time as ob i ex+aret8t)5ject B. What is the final speed of object A compared to that of object B?

  Objects A and B both start from rest. They bothi7 (luouc9 l. 7kq;yco accelerate at the same rate. However, object A accey c ou7.oi(ukl;l7cq9lerates 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 fall:r5e:8hxl, q(vr zz 5e7mh kbws in the absence of friction, which of the following is true concerning its motio(rm:, 7vhz er55:zq blewhx k8n?

  When an object is released from rest and falls in the absence of friction, wh 1l:eqcpnvc wolp:kw86v+3m8f3s. akich of the following is t 6m l lvnw3v sc.wepc8kk+pq:3o1a f8:rue concerning its motion?

  Suppose a ball is thrown straight up. Make a statement abop u2+ ihzkp0qr6nb(:2 8c scggut the velocity and the acceleration when the ball reaci0s:(hc cp2g b +zg68k2 nqpurhes the highest point.

  Suppose a ball is thrown straight up. What is its acceleration just before it r04 .*8t tguhjngo *wjkeaches its* gg kw84jut*j t.noh0 highest point?

  Suppose a ball is thrown straight up, reaches a maximum height, a7*wbii,-z xpug +u *kthen falls to its initial height. Make a statement about the direction of the velocity and*x- *ki pziwb+7 ,uaug acceleration as the ball is going up.

  A ball is thrown straight up, reaches a maximum height, thisrk j 00l88y)/ml2kskbn yx/ en falls to its initial height. Make a st)8s00r //2 klml sjb xn8yykkiatement about the direction of the velocity and acceleration as the ball is coming down.

  Suppose a ball is thrown downward in the abse*gb1k0 +n qdrh1dkl p;nce of air resistance. Make a statement concerning ;k+d 1p1bkndrhq 0l*gits acceleration.

  Suppose a skydiver jumps bw.bo..rtjdtx9*c6 x from a high-flying plane. What is her acceleration when she she rea6. * t.rtbdbx.jc9xowches terminal velocity?

  A ball is thrown vertically upward with a speed v. 1eamuae2eijup3xgc30 rh4/- An identical second 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 doeje3 4r32cg/pi1-xemu 0h ueaas the second ball go than the first ball?)

  Ball A is dropped from the top of a building. One second later, ball B is dropp*(e cvd 3pnwun, s/6jped from the same building.pj ncw, 3*e/(6n dsupv As time progresses, the distance between them

  Ball A is dropped from the top of a building. Onetrsq2 y h;;s(y7;hjad second later, ball B is dropped from the same building. As time progresses, thhq;a7s;;h yj (ds2ytre difference in their speeds

  Two objects are thrown from the top of a tall buz7. iu6 w1 6kuytgqlx.ilding. One is thrown up, and the other is thrown down, b 6 .6 w1u7lgyiqux.zktoth 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 zo+ 3ns*;wi gvb5x ld946d vrfthrown straight down from the same building. They are released at the same time. Neglect air resistance. Compare the accelzg i5dd l4rsfbn*w9v6x ;+o3 verations of the two bricks.

  An object is moving with constant non-zfoqtx2 6 owe,s* ,ms-r7h.fde.os n c tkq2o.4ero velocity in the +x axis. The position versus time graphoqo*-672kssd,x4feote s2.cf.on q,rm t w.h of this object is

  An object is moving with constant non-zero acceleration in the +8gp,ptgh c dih5k-z2-x axis. The position versus time graph izhpg,ck 28 -t hd-5pgof this object is

  An object is moving with constant non-zero velocity in thc9k o9dqt6ofd4f1() f twy 8lke +x axis. The velocity versus time 4( 6ttfoo9clw)dk8d q9 1ykffgraph of this object is

  An object is moving with constant non-zero accelerat8 ipt/i0g9rxx8 gp-foion in the +x axis. The velocity versus time gg8x089io/- fxpg pir traph of this object is

  The slope of a position e ys+iohl* 6qi**,md7y )bzy dversus time graph gives

  The slope of a velocity versus time gra7/7z+j:bccnd gq (9165) ypxvg etsk4xlgc er ph gives

  The area under a curve in aunth ;qq9c(j3n acceleration versus time graph gives

  The area under a curve in a velocity versus time gq/knn(n g: *8ktr6ovqraph gives

  If the position versus time graph of an object is a horizontal line, w71 u b/l+sskhmump23the object s 1hpu lm7w+/m2sb3kuis

  If the position versus time graph e +cg) 4nfdno/:ps0 rrrgzu*+of an object is a vertical line, the object is fcg dr)g0enp* 4ro uz++n:/rs

  If the velocity versus time graph of an object is a horizontalwy1z b2yg;oxo,pu9 obz2 l /l( line, the object ixob, pw;2z ub2g( z/1oloy ly9s

  If the velocity versus time graph of an object is a straight li7e-sbz 4wfn1fe7r +, w) eix3s xi6vd ot:nf)ine making an angle of 30 degrees with w)i on:ft,e71bfxxs-efw4 +6d szrv in3e7i) the time axis, the object is

  An object moves 15.0 m north and then 11.0 m say z(q cu7 .joyhg.:0 h;ovn/iouth. Find both the distance traveled and the magh.gq7j.yu :; n vc0a(oy/ hzoinitude of the displacement vector.

  A boat can move at 30 km/h in still water. How long will it take to move 12 kbfw t)bw5: lc:m upstream in a river flowing lt)cw 5f bw::b6.0 km/h?

  55 mi/h is how many m/ 9ql4o)t/um gbs? (1 mi = 1609 m)

  What must be your average speed in order to travel 350 km in 5.15 x;5rgjc th ym+v(lens989vd22uuc)dh?

  A runner ran the marathon (approxima yff6hqdk. *+wtely 42.0 km) in 2 hours and 57 min. What is the average sdfq *.y6 kwfh+peed of the runner in m/s?

  A car travels 90 km/h. How long does it take for it td 7hi/*h .):jxf:oywxw6bv rp o travel 400 km?

  A ly (light year) is the distance that light travels in j-gq/,id g cf.one year. The speed of lqfc ,-.j gi/dgight 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 look to the side fo/;nebf3fh ,dhr 4.0 s,hbhff/3dn ,; e how far do you travel during this inattentive period?

  If you run a complete loop around an outdoor track (400 m)b 7, nlkmr+ft3, in 100 s, your average vemkb3lnf,t 7+ rlocity is

  A polar bear starts at the North Pole. It travels 1.0 km south, then 1.0 km eyh kte8l.rx q;p38 x-hast, then 1.0 km north, then 1.0 km west t t83-y;exk8xpqhh l.ro return to its starting point. This trip takes 45 min. What was the bear's average speed?

  A polar bear starts at the Norg6/ solha5vc ;th Pole. It travels 1.0 km south, then 1.0 km east, then 1.0 km north, then 1.0 km wesolv/g s6ch;5 at to 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 ,p pvm o7bn;muxl6*,p u( 2mok55 mi/h for 110 miles. It then starts to snow and you slow to 35 mi/h. You arrive,mbvnm,k(pul ouxppo 2 ;67 *m 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 *y c:vbps*2dyim z5;wat 100 km/h. What is the average speed of the motorist f v pbys;zi2wmc*y 5:*dor this trip?

  A motorist travels for 3.0 h at 80 km/h and 2.0 h agf agw 02mp opnc)qu6:x,,*bg uh25qw t 100 km/h. What is her average speed ub5gap,nw2m :fug,p 6 gcq*0 2 qow)xhfor the trip?

  An airplane travels at 300 mi/h south for 2.00 h and then at 250 mi/h nortzvy*ekn 87av ,h for 750 miles. What is the average speed for the trip?v y,nz7* eva8k

  In a 400-m relay race the anchorman (the person who runs the last 100 m) fsrsuhd/(/n ys b)s(67ig,fcy or 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 l7dc/ h6ysfynu sg,)bs(( r/ isead 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 12 s. The car's average 0n dvd v9foc10velocity duringfnd1 dv0 vo0c9 deceleration was 48 km/h. What was the car's deceleration while slowing down?

  An airplane increases its speesajdul5ql9 0 :d from 100 m/s to 160 m/s, at the average rate of :dsl 0lqj95ua $15 \; m/s^2$. How much time does it take for the complete increase in speed?

  A car traveling 60 km/h acce-g k3ua):jhjq:zr9 qslerates 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 acup (. q0ltkp:4 xle/rhcelerates 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 acceir60en0 d /ck rxh ij6c h./4mreo4ot7leratiox ihce jon66rr/.4t/rm 00dh7ciko4 en 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 6.8 m/s experiences a constant accelekjypo*e51 t9 eration o o5j*y 9et1kepf $4.9 \; m/s^2$. What is the cart's displacement during the first 7.9 s of its motion?

  A bullet moving horizontally to the right (+x direction) with a spennsbxwzf 3 -kq( (vn26ed of 414 m/s strikes a sandbag xwf 2bk-6qsz (nv(n3nand penetrates a distance of 77.92 cm. What is the average acceleration, in $m/s^2$, of the bullet?

  A jet fighter plane is launched from a catapult on an aircraft carr h:e;vy v.v5frier. It reaches a speed of 42 m/s at the end of the catapult, and this requires 2.0 s. Assuming thvrfehv5 :;v. ye acceleration is constant, what is the length of the catapult?

  A car starting from r/l8dom.3wc c/ wcq a-iest 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 m. Whb4 ix8/ by;,iox d;.c mimk1djat is its average acceleratbmkcj4bio/ ;;iix xd8d1ym ,. ion?

  An object starts from rest and underg8*r5xw0 xpwaxoes uniform acceleration. During the first second it travels 3.1 m. How far will it tra*xw8w xp0rxa5 vel during the third second?

  An object is moving in a straight line ok6vqs(cp s*:ssdde8; ql( ;l with constant acceleration. Initially it is traveling at 16 m/s. Three seconds later it is tr(eso qspsl; d8s:(kd v;6qlc*aveling at 10 m/s. How far does it move during this time?

  A car starts from rest and accelerates uniform puz+a/4)vfqi rsrdvli2e )ai;b52 4lly 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 rk1.dy+:5zl.w1ruf ngs1visw oad 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 traff24( f4h3.oh kp3 ycffxujt(eyic light turns green, a car that has been waiting at the intersection starts ahead3y(pc4hy .(2futhf4okf ej x 3 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 rw+(osc m8w8mxifme, 5ccz40on the surface of planet X where the acceleration due mm4c xc8+8w(zrfme osi5,wc 0to 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 sda4 d:0m nur/lurface of planet X where the acceleration due to gravity in/d:0l4 urd ams $1.5 \; m/s^2$. 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 X vu/t07wt;ve bw z+jk1where the acceleration dv;wk+v1 0zwu tb/ tej7ue 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 wij1axm (c qyv*0 ;1cigeth a speed of 14 m/s on the surface of planet X where the acceleration due to gravity is c0x11qve j*;ycmg ia($3.5 \; m/s^2$. What is the speed of the object after 8.0 s?

  Human reaction time is usually greater than 0.1(kc6w ) z/.suc btpak*ubk)g,0 s. If your friend holds a ruler between your fingers and releases it without warning, how far can you expect the ruler to fall before you t *(p.6)gckz,a )bsc/kkuwbu catch it?

  A ball is thrown upward at eb9g31tbgf,*wou fr kx 2bcjp 1u n:33a velocity of 19.6 m/s. What is its velocity after 3.00 s?3u33nbx1pg o9jrfebug*cf w 2b1kt,:

  A bullet shot straight up returns to its starting point ijbe,3 i9se(pgn 9 s. What is the initial speed of the bul 9gspe(b i,ej3let?

  A ball is thrown straight up with a speed of 36.08)5nqup1rmzq1p( jq k m/s. How long does it take to return tp zj 1)51(r8pmqnuqqko its starting point?

  A ball is thrown downward from the top of a h tc4q 7rbjl,8building with an initial speed of 20 m/s. It strikes the ground after 5.0 s. How high is the buildiqtljch ,r b748ng?

  A ball is thrown straight up with a speed pyq(p7us7 z7e of 30 m/s. (only fill in numerical value in the blankps 7y7p(7ez qus)
(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 o.e:o,p h bgw/h yo3d8ok:p (vwith a speed of 42.5 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 11 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 11.0 m above the point of contact a second time.  (数值)  $s$

  In Fig. below, what is theeoui o9mux q .*6z6jr4 velocity at t = 1.0 s?

  In Fig. below, what is the veloci5w aqb/:2ps,pl yq oj)ty at t = 2.5 s?

  In Fig. below, what is the velocity at t = c)j, ouau w.z*4.0 s?

  In Fig. below, what is tn jzkskx:a*u3+xzb eiug / -eim*7m(0he velocity at t = 5.5 s?

  In Fig. below, what is the average velocity from 0 to hktg1d y 0dk h1ht/j2r9/hiu34.0 s?

  In Fig. below, what is thhf+hc0h2huzq)m hif u o25, i:e average velocity from 0 to 6.0 s?

  In Fig. below, what qt 2d0s 5e8rzuis the acceleration at 1.0 s?

  In Fig. below, what is the acceleration a g6 aka61ws jfl7vjh3v pyn96- qf(6ezt 3.0 s?

  In Fig. below, what is the average accelera wpis vm82l7 n(.ry/qntion from 0 to 5.0 s?

  In Fig. below, what is the average acceleration from 0(x wz*+ kh2lop to 8.0 s?

  In Fig. below, what is ,ij d1ss24um :/su fxithe displacement from 0 to 8.0 s?

Does a car speedometer measure speedf ram1);c-pm hbmb hq(qna+ oflz 5:(3, velocity? {speed|velocity}

  An object can have a varying speed if its velocity is2b qz1jx z/,9 sqc+gyy constant.

  The velocity of an object can be negati e7ono,gq;3onve when its acceleration is positive.

  If one object has a greater speed than a second object, the first must , jc0yij3ke+ dj;45jha gte(lhave a grjj4y50 g,+(d3;lk tjehj e caieater acceleration.

  Two cars emerge side by side from a r ay ccf0 t8bg+da8s-,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 acceleg12i; 6 zki:d(e rrsmbh47f.g 8 makzgration decreases.

  A baseball player hits a foul ball stro clqt4l6+w ,yrll6fc i. de* z+6lo1qaight up into the air. It leaves the bat with a speedt6qy ,l6z6*fd+ q1io cw.rl 4l+l oelc 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 speeds3+y7b49 uojwa7m fnh . vlyov8 up, what is happening to its acceleration, how does it cho.y87+o bnaj yfv37vh 9w4lum ange if air friction is ignored?

  As a freely falling object speeds up, what is happening to its accelegz+k47zun cn.4rf vb 5ration, how does it change if air friction ub4.c5zzrngn+v47f kCAN NOT be ignored?

  An object that is thrown vertic6 tfb dmibe;oae47c85ally upward will return to its original position with the same speed as it had initially if air res6 ieo8bm5 atb ;4f7cdeistance is negligible. If air resistance is appreciable, how will this result be altered?

  An object can have zero velocits ( zi.ov2ku9t ku0)thy and nonzero acceleration at the same time.

  An object can have nonzero velocity and zero accelera5fbc ihc g+y*/tion at the same time.

  An elevator moving from the second floor to the fifth floor maki35fh om6kt;uv3s8 gmx ng no stops along the way has zero acceleration allo8kv3u5m ;3 hmfgs6tx the time.

  A rolling ball moves from .re0zvyc. ko* $x_1=2.2 \mathrm{~cm}$ to $x_2=-8.4 \mathrm{~cm}$ during the time from $t_1=1.0 \mathrm{~s}$ to $t_2=5.7 \mathrm{~s}$. What is its average velocity?  (数值)  $cm/s$ (only fill in numerical value please)

  A particle at $t_1=-3.2 \mathrm{~s}$ is at $x_1=3.3 \mathrm{~cm}$ and at $t_2=4.4 \mathrm{~s}$ is at $x_2=8.4 \mathrm{~cm}$. What is its average velocity?  (数值)  $cm/s$

  A person jogs eight compl mv7onnn-s5. :vnwk:h *bw3de ete laps around a quarter-mile ($1 \; mile = 1609 \; m$) track in a total time of 9.5 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 87 m d15aw)rs xp6aaway in 12.4 s. It then turns abruptly and gallops half 1 rw)asp6axd5way 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 frol0.9m/ obc6 axy8wxu wm $13 \; m/s$ to $24 \; m/s$ in 5.5 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 fromt,co,+y git0 z $20 \; m/s$ to rest in a distance of 70 m. What was its acceleration, assumed constant?  (数值)  $m/s^2$

  A light plane must reach a sps)p(n8lmy 3nqeed of $28 \; m/s$ for takeoff. How long a runway is needed if the (constant) acceleration is $3.0 \; m/s^2$ ?  (数值)  $m$

  A world-class sprinter can burst out of 5d, vuvydb 8,zthe blocks to essentially top speed abou 8v5zddu ,byv,t $10.9 \; m/s$ in the first 13.9 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 speed of (5z d xl.:sswo$20 \; m/s$ to rest in 5.25 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 high1bqiyfv )3,rsway. Assuming a deceleratiov1rqbyi ,fs)3 n of $7.00 \; m/s^2$, estimate the speed of the car just before braking.    $m/s$