What is the SI unit of momentumytfuh6apmiri8r .klh1. *m-7?

  When a cannon fires a cannonball, the cannon wili olw)n8ru/g2l recoil backward because the

  A freight car moves along a friiumtt1b 2jy8x n:gd,t0a x qk;/y/zi4ctionless level railroad track at constant speed. The car is open on top. A large load of coal is suddxk1:yutizy/0i xd bqja ;4t /m,gtn28enly dumped into the car. What happens to the velocity of the car?

  A child falls sideways off a sled while sledding on frictionless ice. What hap;m9jo2ix8v fcpens to the velocityjm 8vxi o2f;c9 of the sled?

  A rubber ball and a lump of putt5q.dsvoh +1b 57bz vzty have equal mass. They are thrown with equal speed against a wall. The ball bounces back vos+ vtbz hq5zbd.751 with nearly the same speed with which it hit. The putty sticks to the wall. Which objects experiences the greater momentum change?

  A sailboat of mass m is moving with a momentum p. How would you repre pjblj n0m8v ,*lf4e.isent its kinetic energy in terms of these two quanl l vji,4jnm f80.ebp*tities?

  If you pitch a baseball with twice the kinetic energy you gave it in the previouc;j5gjdkzu*lf;6f g3 9ga v /s uw6nd+s pitch, the magnitude of its momen ;/;gjudfc3v96j 5nz kl+*a6wsggufdtum is

State Newton's second law in terms of moment27lxw- n jy.-cg6ddjrum.

State the law of conservation o/3tq jpor7vn.-+vr,n o*jbbc f momentum.

  The area under the curve o )m.)zum9qrari ps i ,:u(ml7rn a Force versus time (F vs. t) graph represents

  Which of the followintgow2(w e 8dn*j-b+ mug is an accurate statement?

  A small car meshes with a large truck in a head-on colliscl+vl +b.hf-iion. Which of the following statements concerning the magnitude of the average collision+-.chblif+v l force is correct?

  Two equal mass balls (one red and the other blue) are droppezvb*dmp*/mju208wf ca :v*qh d from the same height, and2dh0 ajp wz*mcvv8 m b:*qf*/u rebound off the floor. The red 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 ek c3 boirv0,)hast at a speed of 4 m/s, collides with a stationary bowling ball. The Ping-Pong ball bounces back to the west, and the bowling ball moves very slowly to the east. Which object experiences the greater magnitude imk, h3bov ri0)cpulse during the collision?

  Two objects collide and bounce off each ot/l0e kqxb cr/hww)adz *r +/p9her. Linear momentum

  A 3.0-kg object moves to the right at 4.0 m/s. It collides h v05 j7b p7sw,izerp,kead-on with a 6.0-kg object mo 7pb,e0v,kwrip5 jz7sving to the left at 2.0 m/s. Which statement is correct?

  A 100-kg football linebc 1dbcxe96fqr)kd 0t4acker moving at 2.0 m/s tackles head-on an 80-kg halfback dc 1 cefbqxkr9dt04) 6running
3.1 m/s. Neglecting the effects due to digging in of cleats,

  In an elastic collision, if thea re3l4swz,e8e:2l hu-2d fwm momentum is conserved, then which of the following statements is true about kinetic energy?s4hm2w , lu:e32ldew-a8zr fe

  When is kinetic energy consv9uog7af 9j +wuw* -ncerved?

  In a game of pool, the white cue ball hits the #5 i-ol8s09xmh6jtsd/kq5 r q3 iball and stops, while the #5 ball moves away with the same velocity as the cue ball had originally. The type of coltmx8lqsk i o/09 hr i-js6d5q3lision is

  When a light beach ball rolling with a speed of 6.0 m/s poi2ai .dlp60v1 * ;yaqwnkc3collides with a heavy exercise ball a2n*o yc l;dp w36aia0iv.p1qkt rest, the beach ball's speed after the collision will be, approximately,

  A golf ball traveling 3.0 m/s-r0 unbw oohk x 23f,)1x7fxie,,rtvk to the right collides in a head-on collision with a stationary bowling ball in a friction-free environment. If the collision is almiv,k ,)t xnf -,7ou fk2xoe03x rwrb1host perfectly elastic, the speed of the golf ball immediately after the collision is

  A rubber ball with a+ c0jguyg:6uliw5 jd 5 speed of 5.0 m/s collides head-on elastically with an identical ball at rest. What is the speelj yuiw+55 jd0gcg6: ud of the initially stopped ball after the collision?

  A very heavy object moving with speed v collides head-on with ar -kq.n/d /lyc 0.jblb very light object at rest. The collision is q -..yrklbnjd0lcb//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 collides head-on with a very heavy obt*/r7prk6b;vl 5x uol ject at rest, in a frictionless environment. The collision is almost perfectly elastic. The speed of the hearvo/r6 7b lxpt;l*5kuvy object after the collision is

  A red ball with a veo5o8 dr,x5sthlov5 kpsox /+v23; aaolocity of +3.0 m/s collides head-on with a yellow ball of equal mass moving with xsvpsk,o5 8+oxtoada/vo2 r;o5l3 h5a velocity of -2.0 m/s. What is the velocity of the yellow ball after the collision?

  A very heavy object moving with velocity v collides head-on with a very libn, v ya7s5 k88l2rnjn;dlrn3ght object moving with velocity -v. The collision is elastic, and there is no friction. The heavy object barela 3v lby knj;7nrdrs5n82n8,ly slows down. What is the speed of the light object after the collision?

  In an inelastic collision, i:ba+ 62r z vfy*gf4qpif the momentum is conserved, then which of the following statements is true about kinetic i+qfaz gr6:p2yvf* 4benergy?

  Two objects collide and stick to5vy* y t (1on;;nshjs(nf;gy dgether. Kinetic energy

  A 3.0-kg object moves ymvw: f..1ffdto the right at 4.0 m/s. It collides in a perfectly inelastic com.v dfwf1f: y.llision with a
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 anxaazk ,p)8/xf d sticks. Which object experiences the larger mzxf )x/pk ,a8aagnitude of momentum change?

  In a game of pool, the white cue ball hits the #9biu79 )r ;caam p7ubs4 ball and is deflected 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, Md0v8d8d i tbs8 and m. Which of the following statements is false0t8b 8vs di8dd?

  Which of the following is a false s0qoq *r(hqdsl -0pit yc: e(o5tatement?

  Tightrope walkers walk with a long flexible rodq /.1a8ofl1qri (dxzi0emxui8g 3p+g in order to

  A plane, flying horizontally, releases a bomb, which explodes before h3lgjwxs7 +eij em)*hlc0t2.qitting the ground. Neglecting air resistance, the center of mass of the bomb fragments, just .sjqi2 te+j0m )clx e*wh3g7lafter the explosion

  Two cars collide head-on on a level fricupmu 5tj1 /ij3bjap/;tion-free road. The collision was completely inelastic and both cars quickly came to rest during the collision. What is true about the velocity of this sy1ui/bajuj tmp ;/j 5p3stem's center of mass?

State Newton's second law for a system of partica . 97:6qtxdyq /vlycwles.

  What is the momentum of ab+o-dldcca n;h 5nbn:-ax .0r 2000-kg truck traveling at 35 m/s?

  A 1200-kg ferryboat is moving south at 20 m/s. Wk)e.roz t-:wha o8g-qhat is the magnitude of its momeehworak -g ):z.8o-qtntum?

  A ball of mass 0.10 kg is dropped from a height of 12 m. Its momentum when it gt(+sv0lu8naach5r8s/ 8k iwstn +g8 5/wlurk8ch(8a si0tasv rikes the ground is

  Two identical 1500-kg cars are moving perpendicu4+.-s/ g;cqyx kgh o,xwae hj8lar to each other. One moves with a speed of 25 m/s due north and the other moves at 15 m/s due east. What is the total momentum of the system.j;cgexqy,x+ gh h-wk/8 so a4?

  A handball of mass 0.10 kg, traveling horizontally at 30 m/s, strikes a wb: 8/ek+pg z3-r fbsaztl6h 3hall and rebounds at 24 m/s. What is tht+3 fh6/r p :hblzs8gzab -3eke change in the momentum of the ball?

  A 0.060-kg tennis ball, initially moving at a speed oo9e8aif s;*a1,h jjcli. a8td4nj +j hf 12 m/s, is struck by a racket causing it to rebound in the opposite n o.had* shj;4ictj,l+ 9i1a8fe8jaj direction at a speed of 18 m/s. What is the change in momentum of the ball?

  A 50-kg pitching machine (excluding the; np9vfkr o:wtdv+17m baseball) is placed on a frozen pond. The machine fires a 0.40-kg baseball with a speed of 35 m/s in the horizontal directi7w m 1vk tro9+dvp;f:non. What is the recoil speed of the pitching machine? (Assume negligible friction.)

  A 70-kg astronaut is space-walking outside the 90-qo-gaqq-ih- 7byh4h qlu j82kf w dspace capsule and 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 14 m/s awaju8 b h9-4- hql-oq7ai2k -g qy0fwqhdy 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 :.nmtx o cr1c4 y5(rvja large object at rest. The small object bounces straight back with a momentum of magnitude 4.0 kgm/s. (xnjy5.r motr1c c4v : What is the magnitude of the large object's momentum change?

  You (50-kg mass) skate on ice at 4. -et *0f uzr 6tklvw+zudsk:/30 m/s to greet your friend (40-kg mass), who is standing stillk st:te/luf-rwdz 0u6* vz+3 k, with open arms. As you collide, while holding each other, with what speed do you both move off together?

  A car of mass 1000 kg moves to the right along a level, stt.es m 4)ibhl x 3.nr0 l:09pl oere8e-0zjkxaraight road at a speed of 6.0 m/s. It ehz eilt9mxlen0 8 : rs x 0ro-.4.k3p)albej0collides directly with 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 rear7mi l kb:dtk86 of a stopped car that has a mass of 1500 kg and they stick together. What is the speed of the cars aftek 6tkm:db i7l8r the collision?

  A railroad freight car, mass 15,wai/a wzmh1bs-*h3bo n 9(p: o000 kg, is allowed to coast along a level track at a speed of 2.0 m/s. It collides and couplew(zaoh9b3- n m1 /iobws*ph:as with a 50,000-kg second car, initially at rest and with brakes released. What is the speed of the two cars after coupling?

  A railroad car, of mass 200 kg, rolls with negligible friction or )n8w8ube2o m vq 2wmd8x*nwr1:vr n7n a horizontal track with a speed of n)m x e2r2drr 88owv7 n:qun 1w*wmvb810 m/s. A 70-kg stunt man drops straight down 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 at the rate of 0.80 m/s (with)lb9zet*,c e d8lvwbcxo9 (5a respect to the log). With what speedbce*ot ce ab,d 8)9zlw5 xv(l9 does the log move, with respect to the shore?

  A 4.0-N force acts for 3.0 s on an object. The force suddepk+) t3ke hs6te0jfxl4zs jxve0 cc;+7a - bl.nly increases to 15 N )k-ef ttjac0l lc4x z;p+jk.se 7+seh30x6v band acts for one more second. What impulse was imparted by these forces to the object?

  A constant 9.0-N net forcevr 0xor4h0 8rg acts for 2.0 s on a 6.0-kg object. What is the object's change of velocity?hxr00ovr 4r8g

  A 2000-kg car, traveling to thmxu/l.idy2b b nd9/l(dgex+0 vl92zne right at 30 m/s, collides with a brick wall and comes to rest in 0.20 s. Wh2y.v9 bn2mleb0diz x/9ul/gd( n x+dlat is the average force the car exerts on the wall?

  A 2.0-kg softball is pitcgc6t7m4gv n9a rij9b 3hed to you at 20 m/s. You hit the ball back along the same path, and at the same speed. If the bat was in contact with the ball fo gntg93r c69vjmbi74a r 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 speeds of the ball right bege8 k4f.w/y d59+su srd.mrr sfore and right after hitting 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 ons s4+d uwr9fr8edmg.s 5 yrk./ the ball by the table top?

  A machine gun, of mass 35.0 kg, fires 50.0-gram bullets, with a muzzle velocity c4(ojhxta (jr;f js)5of 750 m/s, at the rate of 300 rounds per minuteaoftr4jjj x )s c(5(;h. What is the average force exerted on the machine gun mount?

  A fire hose is turned on the door of a burnin/n kw2t se*m( .yw(0couzt lm8g building in order to knock the door down. Thislzutwoc *k/e ((y 0m.8t2mwsn requires a force of 1000 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 horizxlo.qyj7rq89 ontal drainpipe at the rate of 120 kg per minute. It falls 3.20 m to the ground. Assumorx q8q9y7.j ling 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 o pyvthfhy0 2,:ir tk9:f 40 m/s after 3.0 s, when fired straight up. What average thrust force does the rocket engine exr0i,p:yf 9k2htth: yv ert?

  Two astronauts, of masses , uxiw(cb9s adt0g;o bf/vj17 60 kg and 80 kg, are initially at rest in outer space. They push each other aparjw(bcs,9t;a0/ xog v fiu7b d1t. What is their separation after the lighter astronaut has moved 12 m?

  A 3.0-kg object moves to the right with a speed of 2.0 m/s. It coe( fgdo2s92ys xqk 5/allides in a perfectly elastic collision with a 6.0-kg object moving to the left at 1.0 m/s. What is the total kinetic energy aft2eo (q2s5/xsfak y9gder the collision?

  A 0.10-kg object with a velocity of 0.20 m/s in the +x directio; r7mqn kbn6 5wf0wd) 9g3w*dvtrw 3mqn makes a head-on elastic collision wi* r3wtq nn)ddwbfw 973kgmmq5r 6w0;v th a 0.15 kg object initially at rest. What is the final velocity of the 0.10-kg object after collision?

  A 10.0-g bullet moving at 300 m/s is fired into a 1.00-kg block at rest. Thtt-g n.oz8ek0 q */wiie bullet emerges (the bullet does not get embedded in the block) with half of its original speed. What is the velocity of the block right after the coll.z *qk n0/it -8igeotwision?

  A proton, of mass m, at resttr8trq 1y lg1;, is struck head-on by an alpha-particle (which consists of 2 protons and 2 neutrons) moving at speed v. If the collision is completely elastic, what speed will the alpha-particle have after the collision? (Assume tq18y rg;1lttrhe neutron's mass equals the proton's mass.)

  A 50-gram ball moving +10 m/s collides head-on wi b:ufp:40/m guy2sxwlth a stationary ball of mass 100 g. The collision is elasticly:/:bg u40uxp2fsw m. What is the speed of each ball immediately after the collision?

A ball of mass 400 g moving toward5 + iwrm*u-x p;yukks+ the east with a speed of 3.70 m/s collides head-on with a 200 g ball sitting at rest. Thepkmyru i*+ks-uw ;+x 5 collision 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 a97ure9.dti ap 3.0 kg mass at rest. If the collision is perfectly inelastic, what is the speed of the masses after the couiedp7 .r9t9 allision?

  A 2.0-kg mass moving to y v+lit7h5u5b the east at a speed of 4.0 m/s collides head-on in a perfectly inelastic collision with a stationary 2.0-kg m h5bu+it5 7lvyass. How much kinetic energy is lost during this collision?

  A car of mass m, traveling with a velocity v, strikes /7)e je vpmk4xa parked station wagon, who's mass is m xpee/v47jk) 2m. The bumpers lock together 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 verticak9)*9 uc,jr xno 3hoazl direction buries itself in a 2.4-kg block of wood a rest directly above it. As a resur c*nhz)9 ouxko3, 9ajlt, 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 at 90.0 km/h east collides with a 3000-kg car t ;5ct ;cf+kht06pdmd 80o kbhdz+na l1raveling at 60.0 km/h south. The two cars +;6 cc+fk8lhodnkh00 t1a; mdbt5 zpdstick 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 km/h east collides a1 , l-hiv5x 7ptuzrd:with a 3000-kg car traveling at 60.0 km/h south. The two cars stick together after the collision. (See Fz: lr5xvdp, h-1a7uti ig. 7-1.) What is the direction of motion of the cars after collision?

  Two objects move on a leve,rf(s7xkw6-/b 4h xbgb c yyq3l frictionless surface. Object A moves east with a momentum of 24 kgm/s. Objec76yfq/xc byxghr k s3(,bw4b-t 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 10 kg, is moving toward t id9pcta;h/x)he 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 fragme/ a );pt9ihcxdnt 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 third fragment? (Neglect air friction.)

  A 4.00-kg mass sits at thj86pk(hh rs rg43u s x,;qc5 tp40dyfme origin, and a 10.0-kg mass sits at x = + 21.0 m. Whereqh ;4g3(hdrmp0,4sc pt ky6xf rsuj85 is the center of mass on the x-axis?

  The center of mass of a two-particle system is at tkzb v;9 wkrx.,he origin. One particle is lz r;bx kv,wk9.ocated at (3.0 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 ac-dck/k s.al1 t (0, 0), 2.0 kg at (2.0, 0), and 4.0 kg at (2.0, 1.0). Determine the coorddl1 sk/c-.cak inates of the center of mass.

  Three masses, 1.0 kg, 2.0 kg, and 3.0 kg, are located at (0, 0), fwe1 pxk-w9 8i(1.0 m, 1.0 m), and (2.0 m, -2.0 m), respectively. What is the location of the center of mass of thwe 8-pfxw9k1 ie system?

  A 3.0-kg mass is positioned at (0bost00 ggc1m6)wc. tk7 25xadrx+ zah, 8.0), and a 1.0-kg mass is positioned at (12, 0). What are the coordinates of a 4.0-kg mass which will result in the center o)0cbrsm xoc5a7tz tk0agxh2.1d 6gw +f 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 l jgx:7 kfj4bs5ce )x5e4/u dvleg including the foot when the leg is stretched straight out. f4e:xj ge/k jl 7su5)4xc5dvb Assume the person is 1.60 m tall.