What is the SI unit of moment8 ;wm rufc(xwqn7y oyx2::,tdum?

  When a cannon fires a cannonball, the cannon g,-3in7fc adksw)ni 3 g +x4fio q1vw1will recoil backward because the

  A freight car moves along a frictionless level 7(woducam. ; grailroad track at constant speed. The gua ;7cd.o(wmcar is open on top. A large load of coal is suddenly dumped into the car. What happens to the velocity of the car?

  A child falls sideways off a sled while sledding on fricti:zxiu3/9:/c zhw, p stmcqa2ifk-v.uonless ice. What happens to the /wuimu .pc3 sk2v/ a-,x hzi:qz9c:ftvelocity of the sled?

  A rubber ball and a lump of putty have equal mass. They are thrownjq: x osuhw t1g 74rcv)v;y/s;knc( r8 with equal speed against a wall. The ball bounces back with nearly the same speed witwjq/;;(7hvccruys krxs :no4 1 )v8gth which it hit. The putty sticks to the wall. Which objects experiences the greater momentum change?

  A sailboat of mass m is moving wit3 lt9+p m;obash a momentum p. How would you represent its kinetic energy in terms of thb;paosl +93tmese two quantities?

  If you pitch a baseball with twice the kinetic energr3b)+ io orn6my you gave it in the previous p+r bo 63riom)nitch, the magnitude of its momentum is

State Newton's second tf .a(73r zq6kf3qpvzlaw in terms of momentum.

State the law of conse3 b;je8wecu 8orvation of momentum.

  The area under the curve on a Force versus tstf4yj:l 7 x axgom4y nmu4+6;ime (F vs. t) graph represents

  Which of the followin*nu8n m4vu8 dig is an accurate statement?

  A small car meshes with a large truck in a he 2b5.wkatu s 8v1 wzvies,q9x1ad-on collision. Which of the following statements concerning a z. 5bkq t,1s1v 2exsuwwv98ithe magnitude of the average collision force is correct?

  Two equal mass balls (one red and the other blue) are dropped froncbh9m q-sg9l265f,wvz .gldm the same height, and rebound off the floor. The nbgsc 9h6f,9 g. v-qlz dwl2m5red ball rebounds to a higher position. Which ball is subjected to the greater magnitude of impulse during its collision with the floor?

  A Ping-Pong ball moving east at a speed of 4 m/s, collides with a stationaj ( u)mgxw/n.()ik xomry bowling ball. The Ping-Pong ball bounces back to the west, and the im/jkxugnmxo().w ) (bowling ball moves very slowly to the east. Which object experiences the greater magnitude impulse during the collision?

  Two objects collide and k-u1 q1-4suliaoy p;tsfsk7 4 bounce off each other. Linear momentum

  A 3.0-kg object moves to the right at 4.0 m/s. Ia6h wvw)a 4olzves9;r- (m(qy t collides head-on with a 6.0-kg object moving to the left at 2.0 mo6m 9yv)zv;al rwawh((qse 4 -/s. Which statement is correct?

  A 100-kg football lineba+ o:n fp,ktng;cker moving at 2.0 m/s tackles head-on an 80-kg halfback runningok;gp,nnf +t:
3.1 m/s. Neglecting the effects due to digging in of cleats,

  In an elastic collision, if the momentum is conserved, then which of the follb7d:lztxwk. wv17c z+vn6 2drowing statements is true about kinetic enerxzv cd w1b6n:ldr tvwz7k+.72 gy?

  When is kinetic energy conk (k8zynsc),tserved?

  In a game of pool, the white cue ball hits the #5 ball and stops, while jml5foub4 a vtwrzjc g)-b;,;o2k +r 4x49fsothe #5 ball moves away with the same velocity as the cue ball had originally. aou;,cvfbj;24jm+fxwl)g s4o9z rkro4-5 t b The type of collision is

  When a light beach ball rolliuou2d:li aa mf*:g2 c;n6ui eiysg. 8)ng with a speed of 6.0 m/s collides with a heavy exercise ball at rest,uili2;ag):*ui6 ny om2d8.af csug :e the beach ball's speed after the collision will be, approximately,

  A golf ball traveling 3.0 m/s to the right collides in a head-on codzic 6:fl(pv w2znrvgn ;4-44f, htwdllision with a stationary bowlgcw4n4,p dv-:dh 2lizt6f w (vf z;4rning ball in a friction-free environment. If the collision is almost perfectly elastic, the speed of the golf ball immediately after the collision is

  A rubber ball with a speed of 5.0 m/s collides head-on elasticallt2ww8-9v1 3 gnsfc1w0pj ev bhy with an identical ball at rest. What is the bwj1 t0- wwv2gse39vfhc1pn8speed of the initially stopped ball after the collision?

  A very heavy object moving with speed v cof )bcnxy4zw)alo)mc97a 7w d0 llides head-on with a very light object dww7a0x c))79fyla4zno )b cmat rest. The collision is elastic, and there is no friction. The heavy object barely slows down. What is the speed of the light object after the collision?

  A very light object moving with speed v collidbktij2o y4 :2fes head-on with a very heavy object at rest, in b:2f 4joit2ky a frictionless environment. The collision is almost perfectly elastic. The speed of the heavy object after the collision is

  A red ball with a velocity of +3.0 m/s collm zsc8t my.i53ides head-on with a yellow ball of equal mass moving with a velocity of -2.0 m/s. What is the velocity of the yellow ball after the collissc5.ymmz8 it 3ion?

  A very heavy object moving with veloci:po sn fu a5w7).kpb3j3d1 gdyty v collides head-on with a very light object moving with velocity -v. The collision is ela o:dj na)3.p3wy5 p bgfd17uksstic, and there is no friction. The heavy object barely slows down. What is the speed of the light object after the collision?

  In an inelastic collision,vp12 f-ck2rspp/a)zw if the momentum is conserved, then which of the following stpc 1zp) 2r2ksawf p/v-atements is true about kinetic energy?

  Two objects collide and stickk4x8i l-.m6ghe pns6b 9xwz,d5ta y v( together. Kinetic energy

  A 3.0-kg object moves to the right at 4.0 m/s. It collides in a perfectly ine4l1a s+,g rgi1o nq6b;kuvw:hzl:c)ilastic collision with alg 1k6ch i:wzqugvarn,1s +i 4: l);bo
6.1 kg object moving to the left at 2.0 m/s. What is the total kinetic energy after the collision?

  A small object collides with a large object and j;y,(ncp4 yhfsticks. Which object experiences the larger magnitude of m j,4cnyy;h( pfomentum change?

  In a game of pool, the white cue ball hits the #9 ball and is def t) 63i4epleig9bxf f0lected at a $35^{\circ}$ angle to the original line of motion. What is the angle of deflection below the original line of motion for the #9 ball?

  Consider two unequal masses, M snwkb5v3o.z9 and m. Which of the following statements is false?nv9. oskw5bz3

  Which of the following is a false stateme y,ws :4ziimlau mu075biy:1tnt?

  Tightrope walkers walk with a long flef8ojw+lk;itk)j/mh mmk;y z) ;5x9 xoxible rod in order to

  A plane, flying horizontally, releases a bomb, which explodes before hitting tha5i j+wk4uoi. e ground. Neglecting air resistance, the center of mass of thw4 juk5oa+i. ie bomb fragments, just after the explosion

  Two cars collide head-on on a level friction-free road. The cx(zww; w kszhc+le(.*ollision was completely inelastic and both cars quickly came to rest during the collision. What is true about the (wxwz l(w+h esk;c *.zvelocity of this system's center of mass?

State Newton's second law for a syshcng7j a fl:50o2;h;t7ak zlzy1ji26+ifz petem of particles.

  What is the momentum of a 2000-kguf - 6. o,mqnlq5sa3cz truck traveling at 35 m/s?

  A 1200-kg ferryboat is moving south at 20w9yx a9f*epv(cnz 9nucygh(.;,79b z r0ofok m/s. What is the magnitude of its momentum?cp;9o *ey noucf9zry(wav ,xf 9 kg9h0n bz(.7

  A ball of mass 0.10 tb e a vx3 ry6;jo0gds4z7y8q7kg is dropped from a height of 12 m. Its momentum when it strikes t j 74dx3yt7z0eg rvo8 qa;s6ybhe ground is

  Two identical 1500-kg cars are moving perpendicular to each other. One moves win .j8duw z-)v0pt* smlth a speed of 25 m/s due north and the other moves at 15 m/s duvunm d0ps8z.tj )*l-w e east. What is the total momentum of the system?

  A handball of mass 0.10 kg, travelinx9 fn*ks2gp k,l+a0l bsm+y9v4;v0:vpq r hvsg horizontally at 30 m/s, strikes a wall and rebounds at 24 m/s. Whas2qvl+ 0, km4+s y rl9hk;pg 0*vxpvb9n sav:ft is the change in the momentum of the ball?

  A 0.060-kg tennis ball, initiallylm,mhw0x-+og moving at a speed of 12 m/s, is struck by a racket causing it to l-+,m mgwx0ho rebound in the opposite direction at a speed of 18 m/s. What is the change in momentum of the ball?

  A 50-kg pitching machine (excluding the baseball) is placed o johkr )5-qttopt7+:lb sr :n(n a frozen pond. The machine fires a 0.40-kg baseball with a speed of 35 m/s in the horizontal direction. What is the recoil speed of the pitching mb rp:rt o (qso7:5ht-lkjnt+ )achine? (Assume negligible friction.)

  A 70-kg astronaut is space-walking outside the space capsule anmtu8.u y);m5/symfdmc .dk l7d is stationary when the tether line breaks. As a means of returning to the capsule he throws his 2.0-kg space hammer at a speed of 14f;7mcm.yd 5 y/ t). 8ukumslmd m/s away from the capsule. At what speed does the astronaut move toward the capsule?

  A small object with momentum 5.0 kgm/s approaches head-on a large tg7 k6ju347x2z spzya object at rest. The small object bounces straight back with a momentum of magnitude 4.0 kgm/s. What is th2y6g3sku zpjx7z a t74e magnitude of the large object's momentum change?

  You (50-kg mass) skate on ice at 4.0 m/s to greet zq/tt n y;2jd;h atr0uctx zg/ 94m42zyour friend (40-kg mass), who is standing still, with open arms. As you collide, while holding each other, with what speed do you both move off togemzt ;yj2t9h 2cxzuz 4t;a/rtnq/4dg0ther?

  A car of mass 1000 kg moves to the right along a level, u:8v lao1p0cl straight road at a speed of 6.0 m/s. It collides directly wicv8 0u1lap:ol th a stopped motorcycle of mass 200 kg. What is the total momentum after the collision?

  A 1000-kg car traveling at 25 m/s runs into the rear of a sv51 z9a ry/saci3ty1 m l e;cgn;(4bedtopped car that has a mass of 1500 kg and they stick together. What is the speed of the car5e/ yg3;9 1nim a4l(rv1ytbs acze;cds after the collision?

  A railroad freight car, mass 15,000 kg, is allowed to coast along a level tra ilb msv0ac dm0ylj7 v0e(z2/*ck at a speed of 2.0 m/s. It collides and couples with a 50,000-kg 0v jmb*i /2lzya0e(clmsdv70 second car, initially at rest and with brakes released. What is the speed of the two cars after coupling?

  A railroad car, of masse6w - 0nlg*pol 200 kg, rolls with negligible friction on a horizontal track with a speed of 10 m/s. A 70-kg stunt man drops straight down6l -0legwno p* a distance of 4.0 m, and lands in the car. How fast will the car be moving after this happens?

  A 60-kg person walks on a 100-kg log atfy(mb.x(e * y24cy)tva1 amjk the rate of 0.80 m/s (with respect to the log). Wiyfy(vk*a4acxbtym2 j( ).m1 eth what speed does the log move, with respect to the shore?

  A 4.0-N force acts for 3r93 -qaa(poz5,p *axkobh8 cx.0 s on an object. The force suddenly increases to 15 N and acts for one more second. What impulse was imparted by these forcexp8*q 5ap93b(okar , ohzcxa -s to the object?

  A constant 9.0-N net force acts for 2.0 s on opdsbz6,cve-rqa: f1y,1 5dxa 6.0-kg object. What is the object's chang z b1yr ceod, v-d,sf61p:q5axe of velocity?

  A 2000-kg car, traveling to the right at 30 m/s,)p -bfkp w1/3u-wm 2uzhuvi4l collides with a brick wall and comes to rest in 0.20 s. What is the average force the cbk 3/- ihp-)fv2wu lz1wp4uumar exerts on the wall?

  A 2.0-kg softball is pitc+ zgsx,jn 4r0p cq/kd3hed to you at 20 m/s. You hit the ball back along the same path, and asc/q0p4x+dz ngrkj, 3t the same speed. If the bat was in contact with the ball for 0.10 s, what is the magnitude of the average force the bat exerted?

  A 0.10-kg ball is dropped onto a table top. The s b dk*lfned :)p z9t74qt0qzv*peeds of the ball right before and right after h7e0dt*pv:z4 l9q*zk tfdqnb )itting the table top are 5.0 m/s and 4.0 m/s, respectively. If the collision between the ball and the table top lasts 0.15 s, what is the magnitude of the average force exerted on the ball by the table top?

  A machine gun, of mass 35.0 kg, fx+vs2 s8xls*cd6 5/gxkaw*vsires 50.0-gram bullets, with a muzzle velocity of 750 m/s, at the rate of 300 rounds per minute. What is the average force exerted/ad xcsss+5 v*l*s xwx68 g2kv on the machine gun mount?

  A fire hose is turned on the door of a burning building in 3iya) en8 aytn3: njh.5zuat9order to knock the door down. This requires a force of 1005a9t3ay yniu3 t 8.eh:naz nj)0 N. If the hose delivers 40 kg per second, what is the minimum velocity of the stream needed, assuming the water doesn't bounce back?

  Water runs out of a horizontal drainpipe aeose)b0qx :e*/a 3gq r/j6r mat the rate of 120 kg per minute. It falls 3.20 m tor eeb*r6sjq m:xq)3o ag/0ae / the ground. Assuming the water doesn't splash up, what average force does it exert on the ground?

  A toy rocket, of mass 0.12 kg, achieves a velocity of 40 m/s afteiitifwuf;j 15* qa8p(o2 m)a gr 3.0 s, when fired straight up. What average2p*(u qfoaj8; am5if 1t iwg)i thrust force does the rocket engine exert?

  Two astronauts, of masses 60 kg and 80 kg, are initially at rest in oute(oiq :l ti9x-vr space. They push each other apart. What is their separation after the lighter astronaut haiqt(:-xlo 9 ivs moved 12 m?

  A 3.0-kg object moves to the right with a speed of 2.0 m/s.e i rn2w.wdknp9:6ld4 It collides in a perfectly elastic collision with a 6.0-kg object moving to the left at 1.0 m/s. What is the total kir9i:wnl .wk dd2en4 6pnetic energy after the collision?

  A 0.10-kg object with a velocity of 0.a-iq7kr 0*mjrs ;h gr,xcbk, c(m6ip020 m/s in the +x direction makes a head-on elastic collision with a 0.15 kg object initially at rest. What is the final velocity of the 0.10-kg object after co k g m p*,7r,(mqi0;k h0rsj-xb6ccairllision?

  A 10.0-g bullet moving at 300 m/s is fireho v: h2e4 (px1lajg,cd into a 1.00-kg block at rest. The bullet emerges (the bullet does not get embedded in the block) with half of its original speed. What is the velocity of the blockap ,4 hv2 c(glje1x:ho right after the collision?

  A proton, of mass m, at rest, is struck-rq;vt-,jn:0 yz jw ntmqr8t, head-on by an alpha-particle (which consists of 2 protoznv-; nqmjr 0jr, tq ytt:-w8,ns and 2 neutrons) moving at speed v. If the collision is completely elastic, what speed will the alpha-particle have after the collision? (Assume the neutron's mass equals the proton's mass.)

  A 50-gram ball moving +10 m/st 5nc4j)z2 6hxzpvh ki)k(qw1 collides head-on with a stationary ball of mass 100 g. The collision is elastic. What is thc nz6w1(2zkq 4j5ivph)) tx khe speed of each ball immediately after the collision?

A ball of mass 400 g moving towarb-y 72 ak7rbmed the east with a speed of 3.70 m/s collides head-on with a 200 g ball sitting at rest. The collisyrm ka b-e2b77ion is perfectly elastic.
(a) Determine the velocity of the first ball after the collision.
(b) Determine the velocity of the second ball after the collision.
(c) Is kinetic energy conserved in this collision?

  A 2.0-kg mass moves with a speed of 5.0 m/s. It collides head-on with a 3.0 kg sgtdk+u. k97i mass at rest. If the collision is perfectly inelastic, what is the speed of the mastgk ku+d.7i9s ses after the collision?

  A 2.0-kg mass moving to the east dkb.nykabe6w74i/f *at a speed of 4.0 m/s collides head-on in a perfectly inelastic collision with a statiok.ey/ bwd f* 4bin7k6anary 2.0-kg mass. How much kinetic energy is lost during this collision?

  A car of mass m, traveling with a velocity v, strikes a parked station waj8x/q,- m+p ,xjz vjcygon, who's mass is 2m. The bumpers lock togj-zqy8jmc /, vx+ ,pjxether in this head-on inelastic collision. What fraction of the initial kinetic energy is lost in this collision?

A 15-g bullet traveling 213 m/s in a vertical direction buries itsei9m ivm7p8/apw .+y5kdd)- 4fgb o vmilf in a 2.4-kg block dmipa7 4f 8 9bv/)gm+w i-vodkpi5ym. of wood a rest directly above it. As a result, the bullet/block combination moves vertically upward.
(a) Determine the velocity of the bullet/block combination at the point of impact.
(b) Determine the maximum height reached by the bullet/block combination.
(c) Is kinetic energy conserved in this collision?

  A 1500-kg car traveling at8vdouywlj7 m3w/)vf t(ged - +;q7qhy 90.0 km/h east collides with a 3000-kg car traveling at 60.0 km/h south. The vjqtvdl;u3g8-7dm+)y7o ww (/qyfe h two cars stick together after the collision. (See Fig. 7-1.) What is the speed of the cars after collision?

  A 1500-kg car traveling at 90.0 kmfbi5c w7r.ur2olck o8f e 9+2c/h east collides with a 3000-kg car traveling at 60.0 km/h south. The two cars stick together after the collision. (See Fig. 7-1.) What is the direction of motion of the cars aft+r 2c7f 9.rwc ifub52ecoklo8er collision?

  Two objects move on a lgt 7ejy g ki 6bo5k*5/tn:xj7sevel frictionless surface. Object A moves east with a momentum of 24 kgm/s. Objejgbt i/s:k5tj nx76ok 5g7*yect B moves north with momentum 10 kgm/s. They make a perfectly inelastic collision. What is the magnitude of their combined momentum after the collision?

  A small bomb, of mass s:z11ff iio+e f g,dv110 kg, is moving toward the North with a velocity of 4.0 m/s. It explodes into three fragments: a 5.0-kg fragment moving west with a speed of 8.0 m/s; a 4.0-kg fragment moving east with a speed of 10 m/s; and a third fragment with a mass of 1.0 kg. What is the velocity of the thirdvo11 i:s f,gfed +fi1z fragment? (Neglect air friction.)

  A 4.00-kg mass sits at the origin, and a 10.0-kg mass sits at x = + 2wj y/9;agus 4 )g q/fw4gt:fyfev7m-qvju 4f11.0 m. Where is the center o4v//4yj 1jgm;4)ufwftwq -fq7 fe usgvg 9:yaf mass on the x-axis?

  The center of mass of a two-particle system is at the origin. mt.gldr)qse4eb fa a8,,/hc2 One particle is located at (3.0cmeqdat g/2l. eb , 8s)fha,4r m, 0) and has a mass of 2.0 kg. What is the location of the second mass of 3.0 kg?

  Three masses are positioned as follows: 2.0 kg at (0, 0), 2.0 kg at (2.0, 0),l *r)gi6t 5rtf and 4.0 kg at (2.0, 1.0* rtf)6il5 rgt). Determine the coordinates of the center of mass.

  Three masses, 1.0 kg, 2.0 kg, and 3.0 kg, are located at (0, 0)v5 a /ak7csi1b, (1.0 m, 1.0 m), and (2.0 m, -2.0 m), respectivelyai71c ab k5/vs. What is the location of the center of mass of the system?

  A 3.0-kg mass is positioned at (0, 8.0), and a 1rs 7j/1fclw-lsag5*z7j;bfw5/ ravi .0-kg mass is positioned at (12, 0). What are thegf1ja75/lw7*c/siw-bvj r; fl s5z ra coordinates of a 4.0-kg mass which will result in the center of mass of the system of three masses being located at the origin, (0, 0)?

  Use Table 7-1 to calculate the position of the CM of a whole leg including thlanq1y m18(ktz4b ( yye foot when the leg is stretched straight out. Assume the person is 1.60 m t8am ytzqy4 b(ly1n(1k all.