Suppose that an object travels f,7l az z5m. z1+htrlrwrom one point in space to another. Make a comparison between the z.ltl,5a1 +7zrzr hwm displacement and the distance traveled.

  When is the average velocity of /jd p;mr1,wzvan object equal to the instantaneous velocity?

  A new car manufacturer advertises that tpi 0orx8 n+-sxheir car can go "from zero to sixty in 8 s". T o x+nr0x-8psihis is a description of

  An object moving in the +x axis experiences an accelerankm ;(ag 2/nlhud+(sgtnb3qd0b8 f3ktion of $2.0m/s^2$. This means the object is

  Suppose that a car traveling to the East (g) qg:ot71bfjt;p *zz +x direction) begins to slow down as it approaches a traffic lig:bp)t*z1jo7 fz q;ggtht. Make a statement concerning its acceleration.

  Suppose that a car traolpelu965 dt d.+n7yc veling to the West (-x direction) begins to slow down as it approaches a traf6.9 t5 oyedc+dlnulp7 fic light. Make a statement concerning its acceleration.

  Suppose that an object is moving with a constant jzxj2f) w:1x(eox2 vp velocity. Make a statement con w(jox21:xxz2 )fjvepcerning its acceleration.

  If the velocity of an oe 0eso9vye 5nm1oyb7e zi(v59f i7l3kbject is zero, does it mean that the acceleration is zero? Support your answe7 v 7e9lim1ionbfseyy 5(9v3e z50oker with an example.

  Can an object's velocity change direction when its acceleratiot(fe 7 qmv n.mo:*v02b+d cmsgn is constant? Support your answer with an examplnc :dg.m+0* 2 v7m soft(bmeqve.

  Suppose that an object is moving with constant57/diudo+av :5t;h- tomef6:btnw dy acceleration. Make a statement concerning its motion with respect 7+etooit yn-t5v/;5wabf d: du:6 mh dto time.

  Can an object have increasing speed w )ff 28wxtgj 51ieh6bbhile its acceleration is decreasing? Support your answer with an 8gi1 tb x2h)eb5f6 fwjexample.

  Suppose a can, after an initial kick, moves up along a smooth hill ofjn, ir3ue83))ei ybc e ice. Make a statement concerning itni 3ebr83e y)i,c) jeus acceleration.

  Under what condition is average velocity equal to the average of the objet7urf yo jrw6j8tr4+ ,ct's initial and firr j6847ytt+rujo, wfnal velocity?

  Objects A and B both start at res+shsh49k8 e2q*,kb/xfh p cw67 xpta ot. They both accelerate at the same rate. However, object A accelerates for twice the time ashfe k9x 7,2s84c/w s akqpphxht *+bo6 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 a qzlmw6b,h)ol9j/n -qccelerate at the same rate. However, object A accelerates for twice the time as object B. What is the distance traveled by object A comparedl o)/9, mnb6jqhqw l-z to that of object B?

  When an object is released from rest and falls in the absence of frtv/s. l.2fwx ft noy,g0e*y6riction, which of the following* v60fs/yytf,t.elo gw2xn.r is true concerning its motion?

  When an object is released from resnq :zy.2 bx0jp3gg+hk t and falls in the absence of friction, which of the following is tru2kz:.hnqpbx+ yg 3j0ge concerning its motion?

  Suppose a ball is thrown straight up. Make a statement about the velocity anqups*v 884l dhd the acceleration when the bp8 duqsvh*4 l8all reaches the highest point.

  Suppose a ball is thrown straight up. What is its acceleration just before hn 1+d-dc 88zilo1lxzit reaches its ld1olzn8- h+i 18zcdxhighest point?

  Suppose a ball is thrown straight up, reachesv i1;dj g6 3q)uej10r upzyn2f a maximum height, then falls to its initial height. Make a statement about the direction of the velocity and a3f d)g;10iqj2 6 pnu1ujyvrezcceleration as the ball is going up.

  A ball is thrown straight- -/ xafqg2ovz up, reaches a maximum height, then falls to its initial height. Make a statement about the direction of the velocity and acceleration as th/oq f-v-ag xz2e ball is coming down.

  Suppose a ball is thrown downward in the absence of air resistance. Maked/s 9uru(g 0rz a statement concer (ugzur /rs0d9ning its acceleration.

  Suppose a skydiver jumps from a5jefuwh u(d41 high-flying plane. What is her acceleration when she she reaches terminal velocity?fu(d u1hwe4 j5

  A ball is thrown vertr)w7alu (hdm /a8;ykpnvr: 7r ically upward with a 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 second ball to that of the first ball? (How many time;hnylmkrr (7 vp:rw8) au/ad7s higher does the second ball go than the first ball?)

  Ball A is dropped from the top of a building. One second uz9oibbz3 uvi/h uvhr/2s:61 later, ball B is dropped from the same bui3i:r/ sbh1 2ouvu9 zzuib/v6hlding. As time progresses, the distance between them

  Ball A is dropped from the top of a building. One second later, ball B is droxgew7j3o(vgy/z 49nr 8/ v dqbpped from the snxb r 7vvd8g/ojqezw9g(y/4 3ame building. As time progresses, the difference in their speeds

  Two objects are thrown from the top of a tall building. One is thrown i rq-,8oxt0;f cql :yhup, and the other is thrown down, both with the same initialqx:l ,r8qyt ; f0icho- 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 straightf v6tbpk1xhp36*x)pvf 5b5 yt down from the same building. They arf*h) p k 6fb3vv5p1bpttx6yx5e released at the same time. Neglect air resistance. Compare the accelerations of the two bricks.

  An object is moving with hy*5p1h5 gqu lz(lf:x constant non-zero velocity in the +x axis. The position versus t1xf l(glhqp5 5*y:uhzime graph of this object is

  An object is moving with constant non-zero acceleration in the n2. g+,gnzsy l5v0ypu+x axis. The position versus timg 0lg.npus2zy,y nv5+e graph of this object is

  An object is moving with constantey gseps,3 ;:7fu2lqj non-zero velocity in the +x axis. The velocity ver2u:;pfys,7elq s3eg jsus time graph of this object is

  An object is moving with constant non-zero3 )7f y-n2qvuza, b;lnqa8qce acceleration in the +x axis. The velocity versus time grqn)c78a2euzy- q avnl f;q,b3aph of this object is

  The slope of a position versus time (vk)dr7p.wiz graph gives

  The slope of a velocity versus time grr- c8y*po31ja-u t fxqaph gives

  The area under a curve gy )o(0e4 e;vhjtd 8xv-aite+in an acceleration versus time graph gives

  The area under a curve in a velocityh ,i )co g(ahzxd5;71kvwf,wt versus time graph gives

  If the position versus time graph o8 q5dca/8cwyhf an object is a horizontal line, the object c 8 qah85yw/cdis

  If the position versus time graph of an object isv6 )e6e;h7opo miazz g5db; (h a vertical line, the object is5 m6a(he7;;)oi6 pe zhozdv bg

  If the velocity versus time grap b6eqcickc1,, n8z;och of an object is a horizontal line, the object is nb;qe,,cck8zi6 1co c

  If the velocity versus time gr4;gm*h e 3fim-gceci 2aph of an object is a straight line making an angle of 30 degrees with the time axis,c3 4 mg* if2cgmeihe-; the object is

  An object moves 15.0 m north and thenz- 8gfp ro ft5z86q6mb 11.0 m south. Find both the distance traveled and the magnitude of 8o6m8zqg z- 6frp5tb fthe displacement vector.

  A boat can move at 30 km/ uvcqz3psd9f2,; b/go k)hipz yw t:x/6;cg 9eh in still water. How long will it take to move 12 km upstream in a river flgi62po;vd/; ypb9:fguq )w/ 3 te kzcsxc9,hz owing 6.0 km/h?

  55 mi/h is how many m/snv7r-dk.s)2jh j 9vi z? (1 mi = 1609 m)

  What must be your avv5h5. rboxe :eerage speed in order to travel 350 km in 5.15 h?

  A runner ran the marathon (approximately 42.kw 8ja-xc;m8l 0 km) in 2 hours and 57 min. What is the axm8 l;kw- ajc8verage speed of the runner in m/s?

  A car travels 90 km/h. How long does it take for ityw9li - ggebf;ry71d . to travel 400 km?

  A ly (light year) is the distance that light travels d,l wyl8/ru;/sg je7d y * ub81qc7uenin one year. The speed of lige78 jbnc u*,dl1uq8 y// uyr d7gw;lesht 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 si-f 3b)qzer* n an(ogup ky-7a/de for 4.0 s, how f-fur z3a/ - )7bon*g pyqn(aekar do you travel during this inattentive period?

  If you run a complete loop around an outdoor track (400 m), in 100y9u.ei 08r 1p:papzmv s, your average velocitypa8y9.01z :p vmeirup is

  A polar bear starts at the North Pole. It travels 68 bop-uvhx0)(ppz us92ta/qpl v k4n1.0 km south, then 1.0 km east, then 1.0 km north, then p(novv lbt0-u)hp6kpax p4us 892q/z 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 13txi,y1gj f6h .0 km south, then 1.0 km east, then 1.0 km north, then 1.0 km west to return to its sti,yxg1hfj 3 t6arting point. This trip takes 45 min. What was the bear's average velocity?

  You are driving home on a weekend from schooa + nq2al)ll 2dqho30uj4dxg 5nqi*6ol 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 minutes. How far is your homeh +l2oqdq6noqdja i a 2x4l53*lgn u0)town from school?

  A motorist travels 160 km at 80 km/h and 160 km at 100 km/h. Whatj3nlrf /f2j2.lc d:do is the average s2j jn/lrflo 3:d2cf d.peed of the motorist for this trip?

  A motorist travels for 3.0 h at 8 vwd(kley;dbjd 4qv3bis/ f;/;zk p4g,1y v2u 0 km/h and 2.0 h at 100 km/h. What is her average speed ld44b yfqdkp,v/w ;j1e/d; i;(3gvz2k bu vysfor the trip?

  An airplane travels at 3id,ocz 7l0n+6d gd1g y00 mi/h south for 2.00 h and then at 250 mi/h north for 750 miles. What is the average speed for thd gic6dlyog7n+ ,z 0d1e trip?

  In a 400-m relay race the anchorman (the person who runs thecbx .b k ,/jx)w.lbx)e last 100 m) for team A can run 100 m in 9.8 s. H.x )cx wklbbj)b. ,x/eis 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 team A runner not lose the race?

  A car decelerates uniforxo xybdvl6,** 6c jq:,zoddh0mly and comes to a stop after 11 s. The car's average velocity during deceleration was 71 km/h. What was the car's deceleration w*bd6 v,,o6hzx:d0 j q ydx*olchile slowing down?

  An airplane increases its speed from -inr:m c1ls; fcu/b zr +kc+g4100 m/s to 160 m/s, at the average rate of c41; +k:cr+nlzmuc - srbig/f$15m/s^2$. How much time does it take for the complete increase in speed?

  A car traveling 60 km/h accelerantxr2wa3b x/.tes 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 acceleraztxolyo3 c7i7jrp,x7lhw e3t m4t *2*tes 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 h-t c)q uhgqlg98p2wfpz;7 v0.-zat sfor 10 s. It then speeds up with a constant acceleration luzq;chft gs8gw 2av)-z9hp0.7 qtp- 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 3.2 m/s experiences a constant acceleratiovx*ji)ng (dcei1ut x t(9nk;+n of v egt 1kx(x*nnj(d;tii u9)+ c$2.1m/s^2$. What is the cart's displacement during the first 4.2 s of its motion?

  A bullet moving horizontally to the right (+x direction) witd(a.kv 5yrbl 6ruw 6s*df5dgs,2 /lqqh a speed of 572 m/s strikes a sandbag anddglskd/vf( .b,lu5*q ydra65 sw q62 r penetrates a distance of 16.16 cm. What is the average acceleration, in $m/s^2$, of the bullet?

  A jet fighter plane is launcr2hbng y :sl9+0 1wesphed from a catapult on an aircraft carrier. It reaches a speed of 42 m/s at the end of the catapult,sr ws92hbp1ygn e+l0: 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 constant accelerqw e-hf+ ;+mdiation 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 m. What is its a+ u0srdn0r1 *qb/zihbverage accelerbs r/dq+ih rb 1un0z0*ation?

  An object starts from rest and undergoes uniform acceleration. During th5 -rk7azrnb .yr1fi vuligi;9s 2p*3 ue first second it travels 8.9 m. How far will it travel during the thu7 r 1.5buain-*y3g r9vrif2ilksp;zird second?

  An object is moving in a straight lin(b)9 9ht9 daol9 :eoj;+b rvphnjqb:me with constant acceleration. Initially it is traveling at 16 m/s. Three seconds later it is trav)eo::bh9 +9jqlvm9ah(o r9ptd; jn bbeling at 10 m/s. How far does it move during this time?

  A car starts from rest and acce(d *; psl3se95 0 gqptnycj7gelerates 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 decs/5ri2v5rbw o elerate 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 ggw i1, x/ :xfajitanx o7w9.:hreen, a car that has been waiting at the intersection starts ahead with a constan.:o hfwa9jxwgi:x/i7,1xa tnt 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 planet X whevniix707.)vz- lvmf 2o 5rwk ire the acceleration due to gravity2r.lf5 z ixvkwv7vo0) -nim7 i 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 su59j*ynwylf/b1cpg7ekjp dm c8+ p7) irface of planet X where the a1gjfldpe+8p9 77y mw)y5 cni kbcj/* pcceleration due to gravity 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 on the surface of planeth u6ucp, onv/5 X where the acceleration due to gravity v ,6nou/hup5c 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 speeme *z:6 kk;dmh) ; uakx6rn,svd of 14 m/s on the surface of planet X where the acceleration due to gra;,: k6h 6mx kv deanmzs)urk;*vity is $3.5m/s^2$. What is the speed of the object after 8.0 s?

  Human reaction time is usualaszjcm mg x 8x4w./;p;ly greater than 0.10 s. If your friend holds a ruler between your fingers and releasmp/; sja.m x4w 8zx;cges it without warning, how far 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 i g;jr8ip1-stz u4oogqp0 1p u5ts velocity after 3.00gpjg4u p1qsozi1t8;o ur-p50 s?

  A bullet shot straight up returns to its starting poina;dys7kr egvf9f* apn:4g-b. 6:nifa t in 5 s. What is the initid:b f ;9*sg :4f.ngv- aayin6p7aekrfal speed of the bullet?

  A ball is thrown strai6fu.c b+ajevngbu;.4c3dake wr:h 4/i5p py(ght up with a speed of 36.0 m/s. How long does it take to return to its sta5 bck6;uucwa3+ v:fha ( p g.nr4d4ypebi je/.rting point?

  A ball is thrown downward from the top of a building with an initial speed of 19*s38t noayfb8 qr n8mhlt6ng8 k0co28 m/s. It strikes the ground after 4.5 s. How high is the building?3888sf tyl8m qb ct0oogna82hk n6 n*r

  A ball is thrown straight up wi . awl3t9;zirgth a speed of 30 m/s. (only fill in numerical value;z ri3.lawgt9 in the 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 the9pkqfp nvdztp 3 :ot)n0a94 rlgy-:n+ air with a speed of 26.3 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 3 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 tv3qfgf4*fj zb2( 3 -d kshgohmv 0v*mxq3k30g = 1.0 s?

  In Fig. below, what is t4io -:qxg; dyybtx1yu/s x;s.he velocity at t = 2.5 s?

  In Fig. below, what is zbfeqa 5 5;w + 5.err,gdzygn+the velocity at t = 4.0 s?

  In Fig. below, what is the velocity at t = 5.5 y(xmlu +wrl/ypt c .i8l*jh;9 s?

  In Fig. below, what is the average velocity 3leo,.fmjfc/ from 0 to 4.0 s?

  In Fig. below, what is the average ve 2rs-i0mwe i2yi fy55vkm(/b jlocity from 0 to 6.0 s?

  In Fig. below, what is the acceleratiosk/ mvy cy 8shdu3-1*tn at 1.0 s?

  In Fig. below, what is the acceleraclgbt(:,-2x c: adniyltd * ;xtion at 3.0 s?

  In Fig. below, what is the average acceleration from 0 t9. so q)7fwtwi3m dy;mo 5.0 s?

  In Fig. below, what is the average acceleration :e0fpssp 3 ab:gh:z3h from 0 to 8.0 s?

  In Fig. below, what is the displacement lmiqi0c+6 )t42 o5es 0sukvenfrom 0 to 8.0 s?

Does a car speedometer measure speed, velocity? {speed|velocity3db,k.y cvbs50f dw /u}

  An object can have a varying speed if its uuylkum5*,u;aitf- - velocity is constant.

  The velocity of an object can be negative when its acceleration8jt24cv16mbus74( n rtfjpd*y9xv a u is positive.

  If one object has a greater speed thant/3iaa *gbrmc gfqmt82;kozx/2p . y2 a second object, the first must have a greaac8 bo /2 3t22axg;.p*mgrf/kqiyz mtter acceleration.

  Two cars emerge side by side from a tunnel. Car A is traveling with a speed of mujubk*cp8h+t z aw7- r98p1 k$60km/h$ 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.