Suppose that an object travels from one point inui ne)8h:)0b0ssr/ kwph z,sd space to another. Make a comparison between the displacement andsrk ds u0)e0/h,sizhnb:w p)8 the distance traveled.

  When is the average velocitr 6h:inypmwu2ji ,)l2y of an object equal to the instantaneous velocity?

  A new car manufacturer adveo *m: u)n:j/zrg1oln prtises that their car can go "from zero to sixty in 8 s". Thirj zn*l :u)noom:pg/1s is a description of

  An object moving in the +x axis experiencesn8l4nyb( y6 eb an acceleration of $2.0m/s^2$. This means the object is

  Suppose that a car travelin gllu)w.wg,qq;ve+ ;a g to the East (+x direction) begins to slow down as it approaches a traffic light. Make a statement concerning +ug.,aql ;vwwl)eq;g its acceleration.

  Suppose that a car traveling to the West (-x dc pss1.a(twu)-hq 4kpirection) begins to slow down as it appq 4w1apussc.p(- k )htroaches a traffic light. Make a statement concerning its acceleration.

  Suppose that an object is moving with a consta 5 fvche. w+d18y;hwrhnt velocity. Make a statement concerningy 5hwdehvfh ;c1.+r8 w its acceleration.

  If the velocity of an object8vsyf k 3o3mg8hys6u:r6 :xtw is zero, does it mean that the acceleration is zero? Support yoyt8moyh v f6 s3xsrg::36kwu8 ur answer with an example.

  Can an object's velocity change direction when if.k -km1cjq (ru 3ch+tts acceleration is constant? Support your answef kk.t+j q-(1muc rch3r with an example.

  Suppose that an object is moving with constant acceleration. Make abt7vi .czc(m )h69/nff ysjl1 statement concerning its motion with )zc1y.( vs n ch jbm7t/f9fi6lrespect to time.

  Can an object have increasing speed pt67p bokb w-i229lnc(tpv u8 while its acceleration is decreasing? Support your answer with an ov tpip9(clw82bb 2pk6nu7- texample.

  Suppose a can, after an initial kick, rpxo,alar r6 *0z99xvmoves up along a smooth hill of ice. Make a statement cr9 lav *0o6rx9xp azr,oncerning its acceleration.

  Under what condition is average velocity equal to the average of t sp)u0ku2t;sfnm 25euew ,8aat+,le5kaa oj +he object's initial and final velocitestuelka5mosa+aea 5 t,;wj fn,pkuu 8)+ 202y?

  Objects A and B both start at he zaz3vc k + xno6fvt27.k0kb5vr,8srest. They both accelerate at the same rate. However, object A accelerates for twice the time as object B. What is the fina6s5v kb a zo3zv.xc7k2n8 0vrkt +,hefl speed of object A compared to that of object B?

  Objects A and B both starto7iiiarqh tz : 8+ka)fk5mu yva2kz+lo1 1, s: from rest. They both accelerate at the same rate. Hook+:7yhzr1i if 5+q la2ms1voak )a8 :,zitkuwever, object A accelerates 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 falls in the absence of friction, whi oo:p9)wcuc w+ch of the following is o9w+ucc wo:p)true concerning its motion?

  When an object is released from rest and falls in the absence of f2xeqapxigu* 6a kv b) 8f/3n4briction, which of the following is true concerning8 xa2ea63nu*vgk/ pbfxb i4)q its motion?

  Suppose a ball is thrown straight up. Make a e e.of( ;4):iqmd lsqe, 1qqoxstatement about the velocity and the acceleration when the ball reaches the highest point)qe.:o1,eeml ;xod(qsi4 fq q.

  Suppose a ball is thrown straight up. What is i5c t0p/dnd(hcts acceleration just before it reaches its highn/ (50 pccthddest point?

  Suppose a ball is throw 96-mp ukh+6wifx2tfv+wq3ldn straight up, reaches a maximum height, then falls to its initial height. Make a statement about the direction of the velocity and xdqik 6wwmh -+t+ f uflp623v9acceleration as the ball is going up.

  A ball is thrown straight up, reaches a maximum height, then 2+:0sgsu tp1h bfntg .falls to its initiasbu1g g. tfht0s2+n:pl height. Make a statement about the direction of the velocity and acceleration as the ball is coming down.

  Suppose a ball is thrown downwq n+9 gn. hcb.djz1w8ward in the absence of air resistance. Make a statementjn1bn .+hw .q9gcwzd8 concerning its acceleration.

  Suppose a skydiver jumps from a high-flying plane. What is her acceleration whex-(2iajzfuh(7 y,e rmn she s myf,a(h-ixj(ze7u r2 he reaches terminal velocity?

  A ball is thrown vertically upward with a speed v. An iden izxg v sl748fga3 lp1z1hvm23tical second ball is thrown upward with a speed 2v (twice as fast). What is the ratio of th4g1z33i8pz7gs mla vf21 h lvxe 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 building. One second latmcad :;tf-tn )er, ball B is dropped from the datm-t c)f;n :same building. As time progresses, the distance between them

  Ball A is dropped from te5 s f yw k)pfzx;-,j4vdt5m.the top of a building. One second later, ball B is dropped from the same b .pt-y5s)df mwj, ft5 ;z4evkxuilding. As time progresses, the difference in their speeds

  Two objects are thrown6vb6/w*k/ztk pdr;av from the top of a tall building. One is thrown up, and the other is thrown down, both with the same initial speed. What are their speeds when theypbwv*a ktz6/ v 6d/;rk hit the street?

  A brick is dropped from the top of a building. A second brick g*c+aa g423npoya3m; 6mqysd is thrown straight down from the same buildiny3 man*yg3gcs+2pqo4 d ;6amag. 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 vele 7 9dclc0hvn43aht8ck5 nrm 0ocity in the +x axis. The position versus time 7tv n 3dhc00m9r5 4lnche8 cakgraph of this object is

  An object is moving with constant non-zero acceleration in the +x axis. To psx1h+,zpq rmg( 39whe position versus time grapxm9(qpsr1 3how+,zgph of this object is

  An object is moving with constant non-zero lg9zgk7odu yt(6-5ji velocity in the +x axis. The velocity versus time graph of this objec-jgzti uyg6olk 75(d9 t is

  An object is moving with constant non-zero acceleration in the +x axis. The v m/t/ww; swh- idn 9rs+r sep0jj26bj3elocity versus t -em20 ;p6/w3 j/ithsds+9 rwswnbjjrime graph of this object is

  The slope of a position versus time gw s;-rvqftr 2wlzi ()1guu/c:raph gives

  The slope of a velocityvykj ,8m kfo0 8eea0s4 versus time graph gives

  The area under a curve in an acceleration versus time gr +.wm(xwz(z(l9hen dtx9gv dag q)2p /aph gives

  The area under a curve in a veloc; nm)99qe 1 jzj/ lde-.bcq,h(lpar fzity versus time graph gives

  If the position versus time graph of an object is a horizontal line, thpru4m)k n)wkl+ : 1xnggpz8y.e object i):nw p8u g.r+)gy41mlzp xk kns

  If the position versus time graph of an object is a vertical line, the object fb(bh6vt -us2is6su -tb2b(hv f

  If the velocity versus time graph of an object is a horizontal line, the objectw6bd3s /d*tutc5e7tk ibddc*/65 7t swtt3euk s

  If the velocity versus time graph of an objemnu : )59uuhwwct is a straight line making an angle of 30 degrees with the time axis, the objectwnw5u:h) uu m9 is

  An object moves 15.0 m north and then 1 re;1d+lq o3a7 mh4xtzfp4n a;1.0 m south. Find both the distance traveled and the maan71a 3txh;r44qlpd zofm+e;gnitude of the displacement vector.

  A boat can move at 30 km/h in still wate;d ryb: i p+j2e.q+qgyv 1q3lhr. How long will it take to move 12 km upstream:1iy qqevjr2.lh 3d +yqbp;+g in a river flowing 6.0 km/h?

  55 mi/h is how many m/s? (1ea +wn aug:3 (hhk3j:g mi = 1609 m)

  What must be your average gco(: /i4nfxch;r ;vh speed in order to travel 350 km in 5.15 h?

  A runner ran the marathon (approximately 42.0 kmvpqxbhmt5 ) 75u)-iel ) in 2 hours and 57 min. What is the average speed l5bv5eti mhq7p) -)uxof the runner in m/s?

  A car travels 90 km/h.uhpds*.8z sbv 8n3hf : How long does it take for it to travel 400 km?

  A ly (light year) is the distance that light topp jwgyc5x+gtc1*h7w;7 m4 dravels in one year. The speed of lig7+*5h gg;po w dm7ct 1ypcjw4xht 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 loowdvuc.++ bj8 ek to the side for 4.0 s, how far do you travel during this in. bdcjw+evu8 +attentive period?

  If you run a complete loop aaaclaf3v/ e8w0yt((awq +a/*xxcpf1 round an outdoor track (400 m), in 100 s, your average velo av f(wq0fpa8 (+x*l /cea1/aywc3xtacity is

  A polar bear starts at the North Pole. It travels 1.0 km south, then 1.0hw, t8o;)kki h km east, then 1.0 km north, then 1.0 km west to return to its starting point. Tk8 )kto hw,;hihis trip takes 45 min. What was the bear's average speed?

  A polar bear starts at the Nodrya8:hp1lg q 2u8t .yvc yk(8rth Pole. It travels 1.0 km south, then 1.0 km easqyvu8(8 1 ylt phagr:.cdy k82t, 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 velocity?

  You are driving home o1/ 41tkwenxp en a weekend from school 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 hours and 15 1 t4w ne/p1xkeminutes. How far is your hometown from school?

  A motorist travels 160 km at 80 km/h and 160 km at 100 km/h. Whatjme3s5g4s3g n is the average speed of the motos5mgejg4 33sn rist for this trip?

  A motorist travels for 3.0 h at 80 km/h and 2.0 h at 100 km/ghyti tn18fr*;y1w ( ah. What is her average speed for tair11;wgyty* 8(hnf the trip?

  An airplane travels at 300 mi/h south for 2.0m+sz(5rq rzy cto /)s;j9yb))xpxk5b0 h and then at 250 mi/h north for 750 miles. What )c 5+s y p5zr/byxjbk() mo9s)x;tqzr is the average speed for the trip?

  In a 400-m relay race the anchorman498i1vtq u nqqn82je py2k nr3 (the 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 10.1 s. What is the largest lead the team B runner can have when the team A runner starts theyn rj8 qn 2i3ne p29qtv4qu8k1 final leg of the race, in order that the team A runner not lose the race?

  A car decelerates uniformly ank0(7sng h 4z5 ngkjuf1d comes to a stop after 10 s. The car's average velocity during deceleration was 38 km/h. What was thfuj4n k5g hksg7n1(z 0e car's deceleration while slowing down?

  An airplane increases its speed from 100 m/s to 160 m/s, at the average ratek5h3mqzqsf fxu(.y6 ( of sz m( (quyq. f3hx6k5f$15m/s^2$. How much time does it take for the complete increase in speed?

  A car traveling 60 km/h acceleratw9 9rny ;njh el k,5n6;8uzren;ocxu( es at the rate of $2.0m/s^2$. How much time is required for the car to reach a speed of 90 km/h?

  A cart starts from rest and acceleratebo (y./c8p*5xlqan5tp jb j:e0bdp g.s at $4.0m/s^2$ for 5.0 s, then maintain that velocity for 10 s, and then decelerates at the rate of $2.0m/s^2$ for 4.0 s. What is the final speed of the car?

  A car travels at 15 m/s for 10 s. It then speeds38z6v o uro9ks up with a constant acceleratio osrz kuov9638n of $2.0m/s^2$ for 15 s. At the end of this time, what is its velocity?

  A cart with an initial velocity of 6.7 m/s experient9 yv1ll ea4x2ces a constant acceleration of latxe4vy9 1l2$1.5m/s^2$. What is the cart's displacement during the first 9.0 s of its motion?

  A bullet moving horizontally to the right (+x direction) w;yumw8/k q19dvupjoi) e6 fe*ith a speed of 286 m/s strikes a sandbag and penetrates a distance of 47.14 cm. What is the average accelerateiq);6p9y 8 *uev/ mf1w jdkuoion, in $m/s^2$, of the bullet?

  A jet fighter plane is launched from arpe)j cbav/a)am+6p : catapult on an aircraft carrier. It reaches a speed of 42 m/s at the end of the catapul/a+rm ppecb :aj))v6at, and this requires 2.0 s. Assuming the acceleration is constant, what is the length of the catapult?

  A car starting from rest moves with constt:,1ae eo5brg ntwmt- 1 r 2uxjcc8,d(ant acceleration of $2.0m/s^2$ for 10 s, then travels with constant speed for another 10 s, and then finally slows to a stop with constant acceleration of
-$2.0m/s^2$. How far does it travel?

  A car goes from 40 m/s to 80 m/s in a distan*lih,x dwhao +x0*o)/vkpbu8ce of 200 m. What is its average ac b/ +x,o dvwahkl*x)pi*oh 80uceleration?

  An object starts from rest and undu-0kkq52n +epuf j*;fhi ip:wergoes uniform acceleration. During the first second it travels 0uwi + 5;:qfiu2fhk-je*kpp n 6.7 m. How far will it travel during the third second?

  An object is moving in a straight line with constan fg a8;h) x+h0w g/;sy6cd)3d oushvngt acceleration. Initially it is traveling at 16 m/s. Three seconds later it is traveling at 10 m/s. How far doehhcay s+s3 dugghf;o;8d)wn g6 vx0)/s it move during this time?

  A car starts from rest and acce:k j:tk 4 neaxpuy,i- /pmv/k:lerates uniformly at $3.0m/s^2$. A second car starts from rest 6.0 s later at the same point and accelerates uniformly at $5.0m/s^2$. How long does it take the second car to overtake the first car?

  A car with good tires on a dr h1(8k/dzawma y road can decelerate at about $5.0m/s^2$ 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 gr lyox6ga(,2gzn ea.v-een, a car that has been waiting at the intersection starts ahead with a c 2x6(.vzeygn ao,l-agonstant acceleration of $2.00m/s^2$. 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 m1b0exo-en 4 de/s on the surface of planet X where the acceleration due to gravity is 1b4-e0 do eexn$1.5m/s^2$. What is the maximum height reached by the object?

  An object is thrown upward with a speed of 12 m/s on the surface of planet X wheij*;it(0+ ybi l xqr0hre the acceleration due to gravq;0rlbj0t i(+* yihixity is $1.5m/s^2$. 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 7 /9clye)lloq / mdde7on the surface of planet X whereqeo) emdy7d7 l/l9l/ c the acceleration due to gravity is $2.5m/s^2$. 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 surface of planet X when ph03jg i)qw:ce(m4 cre the n:w jcg cp 3h(0eim4)qacceleration due to gravity is $3.5m/s^2$. What is the speed of the object after 8.0 s?

  Human reaction time 3 flyk3l1,/b u(tqevlis usually greater than 0.10 s. If your friend holds a ruler between your fingers and releases it without warning, how far can you expect3bl/yqu3lev l( kf1 ,t 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 afte r2 wgy*.b p7lq2fqz3yfn*7 xtr 3.003y*f l*7 t ngf72wb y2xq.qprz s?

  A bullet shot straight up returns to its star;p9uu 0/j-f rq pby o.r26ihcdting point in 14 s. What is the initial speed of the j qdu2ip ; fy9r p/.hrbu-co60bullet?

  A ball is thrown straig2etm6,ytki(n6lby06sa 19mgqv; qu t ht up with a speed of 36.0 m/s. How long does it take to retb6 m yia(t06 9yv,em;1 ttnu6lkq2 sgqurn to its starting point?

  A ball is thrown downward from (4dhwss)(h07a aro tz the top of a building with an initial speed of 27 m/s. It strikes the ground aft( 7zdthaw has0)4os (rer 5.8 s. How high is the building?

  A ball is thrown straight up with a speed of a5tu-44lesfht4f e l 430 m/s. (only fill in numerical value in tus4ffah4-t4le45l ethe blanks)
(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 a kkaj 2;6t+h zzciz3*x speed of 48.7 m/s. (use $g=10m/s^2$, 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 6 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 6.0 m above the point of contact a second time.  (数值)  $s$

  In Fig. below, what is the velocity at t = 1.oj1*k6 u h n.tgzjc)s;0 s?

  In Fig. below, what is the velocity at t = 2gq cya1/d;q : y7.adoiw2 k,lz.5 s?

  In Fig. below, what ih9on+ m:3f8*qrse mdi s the velocity at t = 4.0 s?

  In Fig. below, what is the velocita0i .v8s;oo/uq*uz p py at t = 5.5 s?

  In Fig. below, what is the average velocitygur . a*9byq att)q3n;/k cdi: from 0 to 4.0 s?

  In Fig. below, what is the average velocity from 0 to 6.hvnp2)6 pnqd6*v w6exve :a;gtlyp8q-y(u*y 0 s?

  In Fig. below, what is the acceleration at 1/ * ai:lo*2ldlmfbp-yp cie/) .0 s?

  In Fig. below, what is the acceleration -kgvn2ixb8 4n at 3.0 s?

  In Fig. below, what is thejif,/b bv ol6( average acceleration from 0 to 5.0 s?

  In Fig. below, what is the average aczq h08w(eyjao76 l4ciceleration from 0 to 8.0 s?

  In Fig. below, what is she -o13*wesv the displacement from 0 to 8.0 s?

Does a car speedometer measure speed, velocity? .njua 8 yjh,.ih x2x:o{speed|velocity}

  An object can have a varying speed ifp-xobco g +a;5sk8t,yh q 5)mtpl85hh its velocity is constant.

  The velocity of an object can be negativ+f2bl 5zvp+yv e when its acceleration is positive.

  If one object has a greater speed than a secon* umzl gg;/lw3)s2odsd object, the first must have a greater acmo*w zusgds/ l2;l3g)celeration.

  Two cars emerge side by side frdm .ra-g kx664bt7nnlzy 4 hd0om a tunnel. Car A is traveling with a speed of $60km/h$ and has an acceleration of $40km/h/min$ Car B has a speed of $40km/h$ and has an acceleration of $60km/h/min$ . Can A will pass car B at the instant they come out of the tunnel.