Suppose that an object travelj,*gae7ay ,1 2mr tafrs from one point in space to another. Make a comparison between the displacemeyf* gm21 e7r,,jaratant and the distance traveled.

  When is the average velocity of an object equal to the instantan pf6q-en*7mq :*j xiw36jh ab:xwm.eaeous velocity?

  A new car manufacturer advertises that their car can go "from zero to sixty p;8rkl9;:d/z ualgbx, f-s15xgzdzh in 8 s". Th gxh85z1;s z-bxu:k9pdl/ za ;r,fldgis is a description of

  An object moving in the +x axis experiences an acceleration 4c y/:fey.bhm of $2.0m/s^2$. This means the object is

  Suppose that a car traveling to the East (o-mr ebtlg hig 9378ashv1x6w2u9aq /+x direction) begins to slow down as it approaches a traffic li7w1b /qgl 6h ouhr23te-98mgaa9i xsv ght. Make a statement concerning its acceleration.

  Suppose that a car traveling to the West (-x direction) begins to slow down a8ez wolm0 2wnpz6o, w/(mc+f zs it approachw z6em0w,lozw82o cfpzmn+ (/es a traffic light. Make a statement concerning its acceleration.

  Suppose that an object is moving with a constant velocity. Make a statement ctj p 29hci9j zj((+pgdoncerning its acceleratio+z9hi(jj dtjp29p(g c n.

  If the velocity of an object is zero, does it mean that the aetzb (exki4t 5i ee+;96dmrz+ cceleration is zero? Support your answer with an zxeb9emi;ze ktid r5t(e+6+4example.

  Can an object's velocity change directiufi9hr d+5ywb ;)n 2xdon when its acceleration is constant? Support your answer wit2h+5fndxy idr9u bw );h an example.

  Suppose that an object is moving with constant abaqj k0/ ev.astulezf4dk.4 h.0 8 ix8cceleration. Make a statement concerdes 0f0q 4k8zbx e/u.ltih8avk4.. ja ning its motion with respect to time.

  Can an object have increasing speed while its acceleration is decreasingmuw1 (d2s) pyn? Support your answer with an exawps m(ydu)12 nmple.

  Suppose a can, after an initial kick, moves q co/j;vwg4d-up along a smooth hill of ice. Make a 4;jdv-/c wqog statement concerning its acceleration.

  Under what condition is avermtsf414zo*o amzl3z c/nz)w ,)c3an eage velocity equal to the average of the object's initial an ,amaz*z) sclcn1 nftzzem3 w/443o)od final velocity?

  Objects A and B both start at rest. The4ry2p 6*zckkqg4-k9n gi(b qjy both accelerate at the same rate. However, object A accelera24y kq9j6 binpg kq4kcrzg*(- tes 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 from rest. They both acceb *-0: vqihsaelerate at the same rate. However, object A accelerates for twice the time as object B. What is the distance traveled by object A compared to that of obje ish ab*e0q:v-ct B?

  When an object is released from rest and falls in thex4r( ez6b upp 27mai)f absence of friction, which of the following is true concerning its moti) bpar(4 mp x2ez7uf6ion?

  When an object is released from rest and falls in the absence of friction, whicqo0,kt69 wm /yh dd6fkh of the following istdqk96h6oky,d mf 0w/ true concerning its motion?

  Suppose a ball is thrown straight up. Make a stza*w7mf /evxdtls1;: atement about the velocity and v :m1 feds/7tza w*l;xthe acceleration when the ball reaches the highest point.

  Suppose a ball is thrown straight up. What is itn2avb + v6h8 is(rqa+u euf; tm/a8i0g-2paois acceleration just before it reach 8 o;-na+g80hseq a+ ai2if a(umupib/6vtr v2es its highest point?

  Suppose a ball is thrown straight up, reaches a maximum height, t ;biyg3qc/vv //u4munhen falls to its initial height. Make a statey;um3/vvi cn4b uqg//ment about the direction of the velocity and acceleration as the ball is going up.

  A ball is thrown straight up, reache+ qph 6 y1 b3tntecr26k0dtak6s a maximum height, then falls to its initial height. Make a statement about the direction of the velckkte1 tn h66b6 a+d32trpq0yocity and acceleration as the ball is coming down.

  Suppose a ball is thrown downwa,zhdq wkw64i/4u,fc n,k6bov rd in the absence of air resistance. Make a statement concerning w 6, q,4cn,4zfkhwoiu /bvkd 6its acceleration.

  Suppose a skydiver jumps from a high-flying planezd+ahf( 0w f3 noh-7gi. What is her acceleration when she s- fa nh70h oi(3+zdfgwhe reaches terminal velocity?

  A ball is thrown vertically upward with a speed v. An identdule8b+dpeq 64qp))l ical 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 does the second ball go thuqpd4+lb)p 8eqe )dl6an the first ball?)

  Ball A is dropped from the top of a buildiy26h5ffcxqrj*q9 bq/6 k um2dp :n) ygng. One second later, ball B is dropped from the same buildin 5h *ud rbxg:fy/p9qy)fmk6n2q2cj6q g. As time progresses, the distance between them

  Ball A is dropped from the top of a building. One second later, ball B is dro67m.st, qch;kf jieh jr3f; ,gpped from the same building. As time progresses, the difference in their speedske76tf ji;, ;mcsfhgqhr,.j 3

  Two objects are thrown from the top of a tall building. One is t4taje1 ex nz r wmibrm i34x(i2v2(6;ehrown up, and the other is thrown down, both with the same initial ;m26(rietxj e24azb(ve1i 3r ix4 mwnspeed. What are their speeds when they hit the street?

  A brick is dropped from the top of a buiq1i ,fc)y- -vnxzl.k zlding. A second brick is thrown straight down from the same building. They are released at the same timncz q,l1ivzk-f x-.y) e. Neglect air resistance. Compare the accelerations of the two bricks.

  An object is moving with constant no. 3q7pv rrrf8lyd7( jkn-zero velocity in the +x axis. The position3 p.8 7qd7krlvrfry(j versus time graph of this object is

  An object is moving with constant non-zero acceleration in the +x axi4xsrw8eqa7 9 4j,xi1;k ojash s. The position versus time graph of this objq,;4ea 4 j89aj sksr7o1h iwxxect is

  An object is moving with constant nothwvk11cnu: :u-z;d vn-zero velocity in the +x axis. The velocity versus time graph of t1-ncu dvv:zu; 1kw:h this object is

  An object is moving with constant non-zero acceleration in the +x axis9ijbn*j;zm sk l- exik:juz osf;2 ;42. The velocity versus time graph of this objec: ulk-;jo sjbik9s2x2j;e4zmn; z fi*t is

  The slope of a position v .f6v1eqipkb25;lj iqersus time graph gives

  The slope of a veloci35axxlu 8c u;gi6;ckgxpf4 .g ty versus time graph gives

  The area under a curve;8tcu47hhktt/ k;lj u in an acceleration versus time graph gives

  The area under a curve in a velocity vei(jltp9r 6k o.*bssw)a-,aqd rsus time graph gives

  If the position versus time graph of an object is a horizont8m4ltb23q z) )9 ofxopn1gkgtal line, the object i) l3n9 go1xzt4q)pk82gtfmob s

  If the position versus time graph styb :81gii2g e*)5 o 6zeodixof an object is a vertical line, the object isie1g z otsg5)ixi o:d8e62 *by

  If the velocity versus time graph of an object is a)a o2p/cb u4*dup+ngl4fuo:e horizontal line, the object isluab pfc:go )+p44d/o* uue2n

  If the velocity versus time g(q ,ku,c6t0: vnfn-gyhb8 l,ob 7fb xmraph of an object is a straight line making an angle of 30 degrees with the ti7x6n( g-monbuk0f: vh ,fq,,8 bybtlcme axis, the object is

  An object moves 15.0 m northw,:jg*lrljr(g z uz1gi4( r1q and then 11.0 m south. Find both the distance traveledlj(zrlziugw g*4(rr q ,j1: 1g and the magnitude of the displacement vector.

  A boat can move at 30 km/hgvd z aa7l;w37v:ab p/ in still water. How long will it take to move 12 km upstream in a river flowing 6z:b7lpa g/3dwva7 v;a.0 km/h?

  55 mi/h is how many m/s? (1 mxzw6ild 8h0kpkd48 7l5 :aufii = 1609 m)

  What must be your averagei c w-q;0xhxs3 bp81sm speed in order to travel 350 km in 5.15 h?

  A runner ran the marathon (approximately 42.0 km) in 2 hours and 58umdqurqn)cjbb19yhvz8 j5 gk *)x+7 7 min. What is hb7zyu)5q*1gbkxvuqj)n r8 9c8d m +j the average speed of the runner in m/s?

  A car travels 90 km/h. 6 gii:e*x)b8u94mlnh( l o xks How long does it take for it to travel 400 km?

  A ly (light year) is the distance tha jyx5yj1)q k. p.7ntjwt light travels in one year. The speed of light is 7yjwyq).p 5kt.jnjx1 $3.00\times {10}^{8}m/s$. 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 straiglh3jx. zca/ 5zt 2scu0b3mi.n )bh:jmht road and you look to the side for 4.0 s, how far do you travel during thin2/x imj j3 )czb :sz0u.t5hcmb 3ah.ls inattentive period?

  If you run a complete loop arounmg cnu8ow 4: x4z,q:ied an outdoor track (400 m), in 100 s, your average velocity i c: :wiq8 mzgn,ox44eus

  A polar bear starts at thm j0),c+o;/jz fd puit7cgo0 ee North Pole. 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 45 min. What was the g0 ec+ mipz,u /)j0doto;f j7cbear's average speed?

  A polar bear starts at the North Pole. It travels 1.0 km south, theebpr/o,m t 15on 1.0 km east, then 1.0 km north, then 1e /p5 ,tbmroo1.0 km west to return to its starting point. This trip takes 45 min. What was the bear's average velocity?

  You are driving home on a weekend from school at 55 mi/h for 110 miles. It the45ydcd z-gdf5fxb (ruf 2lm+4n starts to snow and you slow to 35 uc-bz4dm4(dy5f f+xr5dlgf2 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 at 100 km/h. q (sqve;qmdki)/h 0r ( What is the average speed of the motorist for this tr0qv/kr q(m;e h)d sqi(ip?

  A motorist travels for 3.0 h at 80 k-uhyc9 ,k5h*exty noig :-h7 fhf9:ry m/h and 2.0 h at 100 km/h. What is her average speed fty x n,hf- gh9:- c*yof5hi:ry97h eukor the trip?

  An airplane travels at 300 mit+bq; e6x07n5psfpvb 7v+pra/h south for 2.00 h and then at 250 mi/h north for 750 miles. What is the averagvebrt0 af7vp+p7 snxb 6q;p5+e speed for the trip?

  In a 400-m relay race the anchorman (the person who runs th.k ut x(ali+r3 zk:)v igf(y3ke 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 y( k:3fvt. 3(u azxgrl )ikki+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 11 s. The car's avera m:(36t7o/mz .m n jibjy8iznqge velocity during deceleration was 39 km/h. What was the car's deceleration while stn m7m(yjmji8b zq36z.oin: /lowing down?

  An airplane increases its speed 8ztkmsut fa9q zwnwy 01rfbv.0 :7 xqan 20-9lfrom 100 m/s to 160 m/s, at the average rate of a8w2-ltf : urbyn 09vax.q s wz0kz 9t07fqmn1$15m/s^2$. How much time does it take for the complete increase in speed?

  A car traveling 60 km/h accelerates 3 rw :l -nig8gqyfs/9mat 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 accelb abh skmale;ktm0)u ,5 0m);berates 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. I ye(j gh5r4(uat then speeds up with a constant acceleratioju(y rh5g4ae(n 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 4.8 m/s experiences axj c/ 6la3y:xi constant acceleration ojl iac:y/x3x6 f $2.8m/s^2$. What is the cart's displacement during the first 9.6 s of its motion?

  A bullet moving horizontally to the right (+x direction) wwzjklg 9 ( l+mm5k+vm2ith a speed of 565 m/s strikes a sandbag and penetrates a distance of 18.60 cm. Whlvw (9+l5g zmm2mjkk+at is the average acceleration, in $m/s^2$, of the bullet?

  A jet fighter plane is lhf9(al ygzf995ap9 aig 0 h9.qiqhpd 2aunched from a catapult on an aircraft carrier. It reaches a speed of 42 m/s at the end of the catapult, and this requires 2.0 s. Ah9iy5z9a g9q2 lfd0 .ghhp 9 (qaaipf9ssuming the acceleration is constant, what is the length of the catapult?

  A car starting from rest moves wafywhr3)b/ nl)1he e 6ith constant 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 distance of 200 e,7/qqfrwap);/ gii4xcxjo 4 m. What is its average accela/xq)c 4r;/,iqpwg 4 e7f ixojeration?

  An object starts from *6 ir6vy* 3fszj dabw1xia6jz cm 2b;-rest and undergoes uniform acceleration. During the first second it travels 1.0 m. How far will it travel duringfi6jj6 3*iz6r-v*ba ad2bwczm ;x1 ys the third second?

  An object is moving in a straight line with constant acceleration. ;rhc al9psyz6l8xy5:i3uo 9 cInitially it is traveling at 16 m/s. y9; rpl9uxicaz :3hl65c8 ys o Three seconds later it is traveling at 10 m/s. How far does it move during this time?

  A car starts from re es/(7l e4s)p5krnbah st and accelerates 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 dry road can deceleratdtci 649 jz 1v8wv)ehte 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 green, a car t lypp2z90 np+what has been waiting at the intersection starts ahead with a constap 9 nl0zp2y+wpnt 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 m/s on the surface of plan(ec: ewn 9lv5 hn,iur/) ho/a(,bizgjet X where the accelerabj n)c(i/r,h5eglvnie,9 a/z: (ow u htion due to gravity is $1.5m/s^2$. What is the maximum height reached by the object?

  An object is thrown upward with a speed of 12 m/s on the surface o ck( pn- fxackdpc/z-26 k)p2wf planet X where the acceleration due- cnfcp/2zkx6pwc )k(2p-kd a to gravity is $1.5m/s^2$. How long does it take for the object to reach the maximum height?

  An object is thrown upwad+ mxw3b hpqkyi ,(/4prd with a speed of 15 m/s on the surface of planet X where the acceleration due to grp4yb(p qk/3mw+h ,i xdavity 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 tmzpvn7t*u*c vx:8o/(ce tr(surface of planet X where the acceleration due to gravitt(e8xumor tc(cv */:vtnz*p7 y is $3.5m/s^2$. What is the speed of the object after 8.0 s?

  Human reaction time is usually grqv i :fw2t9i2seater than 0.10 s. If your friend holds a ruler between your fingers and releases it without warning, how far can you expect thewq 2f2iv9sit: ruler to fall before you catch it?

  A ball is thrown upward at a velocity of 19.6 m/s. What is i7y g anb(uh:c.ts velocity after 3.00a u.c:g(bh 7ny s?

  A bullet shot straight up returns to its sts5z ;.sm rek 2-sqzkg;arting point in 9 s. What is the initial speed s;k52s q-;se mk.g rzzof the bullet?

  A ball is thrown straight up with a speed of 36.0 m/s. How long does it tak 0ej*/d;wmua t rk9,tye to return to its kj t9/ ,wa *0mt;eurdystarting point?

  A ball is thrown downward from the top ofzoeif+6 l+yvr+je3vzz8:* p u a building with an initial speed of 21 m/s. It strikes the ground after 1.3 s. How high is the bu*:vv+o8eez+ +fl6pr z ijyz 3uilding?

  A ball is thrown straight up with*2i7.4r6 erp*su6 h pcdtoiyv a speed of 30 m/s. (only fill in numerical value in the6d* 6c4iup t7rprsv h*y.oi2e 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 straigfkmn4 (: msx6yqx61sfht up into the air with a speed of 22.0 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 2 seconds later.  (数值)  $m/s$
(e.) Determine the time at which the ball pass a point 14 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 14.0 m above the point of contact a second time.  (数值)  $s$

  In Fig. below, what is the velocity at 5(m(un7aidg; ok :eefrxa, 6o t = 1.0 s?

  In Fig. below, what is the velocity ao. k5/acjhqj 6s jacwa0. b.,mt t = 2.5 s?

  In Fig. below, what is the ftb c8 v -xlv qlzn09p8na cp(.ds4h5 5jjx53tvelocity at t = 4.0 s?

  In Fig. below, what is the vel.i owu2ln 5qc*qyn .l8ocity at t = 5.5 s?

  In Fig. below, what is the aver 2*hp8blw. exdage velocity from 0 to 4.0 s?

  In Fig. below, what is the average velocity from 0 to6 ba+ itlhfsj h.()/uf 6.0 s?

  In Fig. below, what is tqmu e8xz2x 5yn.y6ww4he acceleration at 1.0 s?

  In Fig. below, what is the acceleration at 3s-itvje 2g35xu2,ho)a o)f sn .0 s?

  In Fig. below, what is the average az clby9n9hhb: my7m1, cceleration from 0 to 5.0 s?

  In Fig. below, what is the average acclr)tb4 o( wh)e( vgmj7eleration from 0 to 8.0 s?

  In Fig. below, what is the displaccr,j1m- at2b+,ijr/ m7 iovewement from 0 to 8.0 s?

Does a car speedometer measure speed, velocity? {speed|v.2x s *u) 9w7erpb 33 wbo2joowekpi9pelocity}

  An object can have ahg8x+ 8yqakfa1( pp /o 6w89 nlad.7qrjlfw8l varying speed if its velocity is constant.

  The velocity of an object can be kazl o2f/e1 u0negative when its acceleration is positive.

  If one object has a great l oeo54sgswlhm932 y-er speed than a second object, the first must have a greater acceleratiomewy o3- 4s25 llh9sogn.

  Two cars emerge side by side from a tunnel. Car a( y nusevlz0.)l2j0v8is j.sA 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.