What is the SI unit of momentuqg;-; i-ywmpz/wr; y hm?

  When a cannon fires a cannonball, the cannon will recoil backwardlb(8 *7v 0 ana/gdtxba because the

  A freight car moves along a frictionless level railroad tracq /-zhfurujq1y4, f +pk at constant speed. The car is open on top. A large load of coal is suddenly dumped into the car. What happens to the qruqff/ ,pz+ hj 1u-4yvelocity of the car?

  A child falls sideways off a sled while sx/ d(qq 7n5dcp8l4 nakledding on frictionless ice. What happens to thlx/ ( aqkddcn485pn7qe velocity of the sled?

  A rubber ball and a lump of putty hav7z nwwzl5ef5 6 o dwfg0i9bb6gs44s-m e equal mass. They are thrown with equal speed against a wall. The ball bounces back with nearly the same speed with s49-dmong05zbz4 6w65i 7w les ffwgbwhich it hit. The putty sticks to the wall. Which objects experiences the greater momentum change?

  A sailboat of mass m is moving wixp3tca a1102 f*o zsj8gbreeoo68u7 lth a momentum p. How would you represent its kinetic eng*30oaj 1s zco1eoapue8btrl768 2 xf ergy in terms of these two quantities?

  If you pitch a baseball with twice them82i4 aynpk vk4xa4x + kinetic energy you gave it in the previous pitch, the magni avyx+nk4amk8442xpi tude of its momentum is

State Newton's second law6qrcor*e d ,3u in terms of momentum.

State the law of conservation of mom-y)dgqb6hjf*aii 4 w)entum.

  The area under the curve on a Force versus time (F g55k s5xosz.nz /t z +cryyih: +3fsz2vs. t) graph represents

  Which of the following is an accu8 ,9hiovdmta, s31rl hrate statement?

  A small car meshes with a large truck in a head-on de 1) ut* z64axkjj*6qbcun *ncollision. Which of the following statements concerning the magnitude of the avejne4b*a t6 6un1** cq)uj dxzkrage collision force is correct?

  Two equal mass balls (one red and the other blue) are dropped from thexwmn, k diohj-p,vz q3zi ng5),,z0t+ same height, and 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 flom+, w tnhzdvn3jxi5kz ,qizp-go,), 0or?

  A Ping-Pong ball movrq vec1c.0;pi ing east 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 th ;prqec0.1vcie greater magnitude impulse during the collision?

  Two objects collide and boun z3 a)tye f,rq+wx3p,oce off each other. Linear momentum

  A 3.0-kg object moves to the right at 4.0 m/s. It collides head-on with a 6.0-k1ils ;cw(u un95ra( flg o(la5iu ;swlu c91fnr(bject moving to the left at 2.0 m/s. Which statement is correct?

  A 100-kg football linebacker moving6p/8l 9 )njjervq8 brb at 2.0 m/s tackles head-on an 80-kg halfback running9rbjv b /j6 rqe88lnp)
3.1 m/s. Neglecting the effects due to digging in of cleats,

  In an elastic collision, if the momentum is conserved5kbjetf .54f5ps jj; x, then which of the following statements is true about kinetic energyex5j t.b4jpjsk;5f 5f ?

  When is kinetic energy coeu+fyv fom1. *nserved?

  In a game of pool, the white cue ball hits the #5 ball and st hh9ef m6.x my7n+b5*2 fc*tm+jzdi(3dflrekops, while the #5 ball moves away with the samehd+9 te5k62rmy f+n*e f dihlxmmb*(3 7zcf. j velocity as the cue ball had originally. The type of collision is

  When a light beach ball rolling wi;a89kjt n /n/gtr wip/i9;hncth a speed of 6.0 m/s collides with a heavy exercise ball at rest, the beach ball's speed after thnp ni89/kr;itn/ ;9 acj gh/twe collision will be, approximately,

  A golf ball traveling 3.0 m/s to the right +( c 6b0/ 5ahcy 5cej ur2 jjr67lipjaapse;+bcollides in a head-on collision with a stationary bowling ball in a friction-free environment. c/a5 sab+iy;j7aejpr6cb6hce jp0 r2uj5 +(lIf 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 elasth3zhbi hg5 4.5lr ,7u 0cpqgzpically with an identical ball at rest. What is hr b.pih0 55zgz43lqp g7h,cu the speed of the initially stopped ball after the collision?

  A very heavy object moving with(w/(iz vi9vm zelo 2,u speed v collides head-on with a very light object at rest. The collision is elastic, and there is no friction. The heavy object barely slows down. What is the speed of the ligu9 2( / zizmvl,oiwe(vht object after the collision?

  A very light object moving with speed v collides h uu6 q62gisb0xead-on with a very heavy object at rest, in a frictionless environment. Thxi u6bug0s6q 2e collision is almost perfectly elastic. The speed of the heavy object after the collision is

  A red ball with a vel aem2 el+u.xh:izq (q/ocity of +3.0 m/s collides head-on with a yellow ball of equal mass movi+imuee2z.l (a :hqxq /ng with a 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 l2fik wc4u99 00uiws ya very light object moving with velocity -v. The collision is elastic, and there is no friction. The heavy object barekuwu49i0sf yi c9l20 wly slows down. What is the speed of the light object after the collision?

  In an inelastic collision, if tqt8qx. m4 q 6nvczaf n/3k1)hvhe momentum is conserved, then which of the follo )qqkfnm.vatc/n8 hx4v q361zwing statements is true about kinetic energy?

  Two objects collide and stick pm2g p4y*u dv,together. Kinetic energy

  A 3.0-kg object moves to the right at 4.0 m/s. It collides in a perfectlyo8gp59vn6 2(ydirf rs inelastic6g2 5rdnrips of8yv(9 collision 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 and sticks. Which object experie1odi-uu9r/ dj c3k*riex ii5+nces c9oki+5ij u-1ui*x/ 3ie dd rrthe larger magnitude of momentum change?

  In a game of pool, the white cue ball hsks+w/rqze3ayx -(.gfcb* w9its the #9 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/cc+qu8. tdeq;ly hd/ , M and m. Which of the following statements is false chut ; /8dceq.yd/ql+?

  Which of the following is a false oe3i5iyn 9suho6 01jj statement?

  Tightrope walkers walk with a long flun;,mkm. ;to*h zpd )yexible rod in order to

  A plane, flying horizontally, releases a bomazbydn*:og uy,g2 )h,b, which explodes before hitting the ground. Neglecting ai,y)o hay, du2*g:zbg nr resistance, the center of mass of the bomb fragments, just after the explosion

  Two cars collide head-on on a level friction-free road. The colli1;p.tx: asp2fehuv ).y6kpehd 1e ol-sion was completely inele due:)2yv.6alst.x ;pp- fo11kh he pastic and both cars quickly came to rest during the collision. What is true about the velocity of this system's center of mass?

State Newton's second law for a syst w988sbdi- *i)ae:q snmj ypub)y8cw:w1 paq0em of particles.

  What is the momentum of a 2000-kg truck traveling at 3 evq7:dvt2 5eekqc:lxjh: ,1 t5 m/s?

  A 1200-kg ferryboat is mshi+8v qjo(bbjl zmp +u-p357oving south at 20 m/s. What is the magnitude of its mom-mb u8+37pv p+obhlqisz( 5 jjentum?

  A ball of mass 0.10 kpyjx *3w: 4gn6-,exlmz(d cf qg is dropped from a height of 12 m. Its momentum when it s,6jxm y l-znc g3qpdew:f4*(xtrikes the ground is

  Two identical 1500-kg cars are moving perpenjr*2i o+nvo2gkr1 ;akhg7n h6dicular to each other. One moves with a speed of 25 m/o gk;r2n 6jg+ in1*a hokh2rv7s due north and the other moves at 15 m/s due east. What is the total momentum of the system?

  A handball of mass 0.10 kg, traveling horizontally at 30 m/s,t daj,2f(np9j6hns9 j strikes a wall and rebounds s h6jd9tp,(2jf9nj an at 24 m/s. What is the change in the momentum of the ball?

  A 0.060-kg tennis ball, initially moving at a speed of p/)fsim;wl 8nm)j n1i12 m/s, is struck by a racket mfmn/ nw 1i))si 8pl;jcausing it to 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 on mt +y rc+-mli8q 8hg0p+7 wbupz58ott 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 tqoul-w pgmhti88r bc80 p7mtz+ 5y++pitching machine? (Assume negligible friction.)

  A 70-kg astronaut is space-was 5- m8a:pag/v.1 xata8kw gcvlking outside the space capsule and is stationary when the tether line breaks. As a means of returning to the capsule he throws his 2.0-kg.8savag kmcapw- :gx18 t/a5v space hammer at a speed of 14 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 object a 7+d3ktzwknk,t rest. The small object bounces straight back with a momentum of magnitud,z7wtk k3kdn +e 4.0 kgm/s. What is the magnitude of the large object's momentum change?

  You (50-kg mass) skate on ice at 4.0 m/s to greet your friend (40-kg mass), w7zyq p6orjf -k02o i9rho is standing still, with open arms. As you collide,fj9pi2q0-koo z yr7 r6 while holding each other, with what speed do you both move off together?

  A car of mass 1000 kg moves to the right along 1eu12q,cvc5o 5+v*d nz mjkyza level, straight road at a speed of 6.0 m/s. It collides directly with a stopped motorcycle of mass 200 kg. Wodq2cj z+k51e mn1ucv*z ,yv5hat is the total momentum after the collision?

  A 1000-kg car traveling at 25 m/s runs into b9gt01zg pg6g o6:ygxf (y+ho the rear of a stopped car that has a mass of 1500 kg and they stick together.gfg1th x 0ggyoo by:6+96z( pg What is the speed of the cars after the collision?

  A railroad freight car, mass 15,000 kg, is allowed to c:hdr1hvuc h(0 5ph t0ioast along a level track at a speed of 2.0 m/s. It collides and couples with a 50,000-kg second car, initially at rest anddr hv 0:5h(thi0h1 ucp with brakes released. What is the speed of the two cars after coupling?

  A railroad car, of mass 200 kzru m+jdff 0v7qs1r,)g, rolls with negligible friction on a horizontal track with a speed of 10 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 sq ,mfz+jd0fr) v7ru1this happens?

  A 60-kg person walks o xye09+t zh/ a)68zxufvyaic4 n a 100-kg log at the rate of 0.80 m/s (with respect to the log)z)yca6e uxa9 v4fh/zy+8t x 0i. With what speed does the log move, with respect to the shore?

  A 4.0-N force acts for 3.0 s on an object. The force suddenly increa1 9hxg)iuyxt 3ses to 15 N and acts for one more second. What impulse was imparted by these forces to the ob9t3 1uhxgy x)iject?

  A constant 9.0-N net force acts for 2.0 rjtpve ;szm *;2fz8 ax83j7qks on a 6.0-kg object. What is the object's *72s8fv;p8 kxetz ;jjmr3 qazchange of velocity?

  A 2000-kg car, travelinghuh dd*z40gnz02-b 7mdp 1yuy to the right at 30 m/s, collides with a brick wall and comes to rest i*bhz- m70gd1yhpn uu240 yzddn 0.20 s. What is the average force the car exerts on the wall?

  A 2.0-kg softball is pitched to you at 20 m/s. You hit the bal 3)t+vab- ao7ji rom/al back along the same path, and at the same speed. If the baj/ a)3ira+m7ovtbao - t 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 speeds of the bal-kup*+ge fvk0 l right before and right after hitting the table top are 5.0 m/s and 4.0 m/s, respectively. If the collief0kk*-vp+ u gsion 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, fires 50.0-gram bullets, with qpsz 0+mvk:8j1 9jhwwa muzzle velocity of 750 m/s, at the rate of 300 rounds per minute. What is the average force exerted on the kwqs9+p8m jvjzw1 :h0 machine gun mount?

  A fire hose is turned on the door of a burning building in order to knock theayk(pzxo/0kw ;l7) d xc28k uoisr8/c door down. This 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 bounc7c/luar0dyo); xkskzw2/8 8k(c oixp e back?

  Water runs out of a horizontal-pt g6qmnzn4 9 drainpipe at the rate of 120 kg per minute. It falls 3.20 m to the ground. Assuming the water doesn't spnpgm-t 4nz96 qlash up, what average force does it exert on the ground?

  A toy rocket, of mass 0yj/(ljtk :w:, xedss5 .12 kg, achieves a velocity of 40 m/s after 3.0 s, when fired straight up. What average thrust force does the rocket e l/ ywtjxksje:(5d:,sngine exert?

  Two astronauts, of masses 60 kg and 80 kg, are initially at rest in out:p2c3txc -v3 i t/0;zgtx t,mtzi *vcler space. They push each othtixg *zc vl;3 x/vtt2 m3tt,cpz-:0cier apart. What is their separation after the lighter astronaut has moved 12 m?

  A 3.0-kg object moves to teflnmue 07toszjk1v; 4o39 ) bhe right with a speed of 2.0 m/s. 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 kinetic energy after 9kl0suvo7net)e 1 ;zjf bm4o3the collision?

  A 0.10-kg object with a velocity of 0.20 m/s l *novs3+cok*5o 7ho 1:uz dqgin 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 collisionlzv*ocnoo + 315:guq7h*okd s?

  A 10.0-g bullet moving at 300 m/s is fa,yctvd), 89jf h bdwtu-gm9bh20yk8ired 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 b)8t,t da08ujgd99h2 ycmhb,-fk yvw block right after the collision?

  A proton, of mass m, at rest, is struck head-on by an alpha-particle mqvd7tt)s4ytiy 7. p6(which consists of 2 protons and 2 neutrons) moving at speed v. If the collision is completely elastt)ids t 6y74pt7y.v mqic, 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/s collides head-on with a stationary b yiw /mlx-+e6rptm5lb(k0u.ball of mass 100 g. The collision is elasticpm05m(xl.- rw 6u+ lk/ ebytib. What is the speed of each ball immediately after the collision?

A ball of mass 400 g moving qy0;zd ed/frhv ks9 *l2e-.zht/gjz1 toward the east with a speed of 3.70 m/s collides head-on with a 200 g ball sitting at rest. The collision is perfectz eyek/fsdv1.zd2l -t0 9rg/ q*h ;jhzly 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 up qv7hlg r3u4 6mo:sf0dv1v -of 5.0 m/s. It collides head-on with a 3.0 kg mass at rest. If the collision is perfectly inelastic, what is the s3sr1647 h:vfdv0umv glop- q upeed of the masses after the collision?

  A 2.0-kg mass moving to the east at a speed of 4.0 m/s collides head-onojga)p8qy 7+gkca(*u in a perfectly(pg7) uayoc +a* j8qgk inelastic collision with a stationary 2.0-kg mass. How much kinetic energy is lost during this collision?

  A car of mass m, traveling with a velocity v,bmau;+7du,dp1 savu 9 strikes a parked station wagon, who'sav usa;ub,p 79m 1du+d mass is 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 vertical directi if7 ,5bu *ddv,usa5ouzek-o2on buries itself in a 2.4-kg block of wood a rest directly above it. As a result, the bullet/block combination moves vertia,ek5z ubdo u *d57vs,2-iuofcally 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 30 4s,r(snz*e4ux c3s fga6kz4f 00-kg car traveling at 60.0 km/h south. The two cars stick to6g4s *z,cfa3(ksrxue z 4fs4ngether 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/taf q+y3 6x1dz)z7 xaac)grz a6gq;-lh east collides with a 3000-kg car traveling at 60.0 76+1a)z g63xar z)d a fcqxgqay -tlz;km/h south. The two cars stick together after the collision. (See Fig. 7-1.) What is the direction of motion of the cars after collision?

  Two objects move on a level frictionless surface. Object A moves east w;;h)qxru4 d)b+ fjr(.avpx v8f vc 2jhith a momentum of 24 kgm/s. Object B moves north with momentum 10 kgm/s. They make a perfectly inelastic collision. What is the magnitrdv vfahhvb(rxjxqu) ; 8+;2c4jf.p) ude of their combined momentum after the collision?

  A small bomb, of mass 10 kg, is moving toward the Novamm5ch4u(l(4f kk *j rth 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 wuaf (4mvmjhl 5(*c4kkith 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 the origin, and a 10.0-kg mass sits at x = +p* ggxa, kr+c4t*c 6g.rxfyl: 21.0 m. Where is the , .6rx+t*l *: 4kcgygr xgfpaccenter of mass on the x-axis?

  The center of mass of a two-particle system is at the origin. Onzcrch hdk:s5d8 09g+hgjps 5+ e particle is located at (3.0 m, 0) and has a mass of 2.0 kg. What is szh5j0 +5dg8k:g+hd cr shc9pthe location of the second mass of 3.0 kg?

  Three masses are positioned as follows: 2.0 kg at (0, 0x dio-kg d4a g tgr97etit:n1*3qhd(( ), 2.0 kg at (2.0, 0), and 4.0 kg at (2.0, 1.0)tgd i9 q dtg1 :(ner-tk *(ad3g7hoi4x. Determine the coordinates of the center of mass.

  Three masses, 1.0 kg7 y/pf64, wt fci,v;oq(igca zb+ cwht cxt(-:, 2.0 kg, and 3.0 kg, are located at (0, 0), (1.0 m, 1.0 m), and (2.0 m, -2.0 m), respectively. What is the location of the cente ihb(: ccfz/ta;f6c gtco,qt vww,-pxyi 4+ 7(r of mass of the system?

  A 3.0-kg mass is positiviu+3.yo sd jvc57l4v. jwg .ioned at (0, 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 of mass o dij54o3yi 7gv.+ l us.wvj.cvf 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 thenmcf( 4gc shi/-do1x - foot when the leg is stretched straight gc 4sf(hd- xc/im-1onout. Assume the person is 1.60 m tall.