What is the SI unit of v4:di5vsmj)ryyja8 ( il6/ /r zz nmd2momentum?

  When a cannon fires a cannonball, the cannon will recoit e); dq 1ypnbijgjew1s;3j(5l backward because the

  A freight car moves along a frictionless level railroad track7glcv/p rx a)1ul l;y, at constant speed. The car is open on v7l /,l u);cyrga l1pxtop. 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 frictionle1hgz( 1h pe qbvkg4u2s:f; m1xss ice. What happens to the velo1zeskh2 4xb1gu ghp;(1 f:q vmcity of the sled?

  A rubber ball and a lump of putty have equal mass. They are thrown3p vt)tg,t s3b)-npnx+ xrxe8 with equal spee+r)38gne3-,p x txnxspt) tbvd against a wall. The ball bounces back 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 py d6hik3b8(amx l2 fa). How would you represent its kinetic energy in terms of these two quantities?ak im83 h2d6a bx(fyl)

  If you pitch a baseball with twice the kinetic energy you gave it int0 :0opz h( kdpywty-. the previous pitch, the magnitude of its momentuo0 hdy:0t wp(ykpz .t-m is

State Newton's second law in terms of mome- wg p6t9(tcuentum.

State the law of cons6gj6b+us( ;clo kd nu9ervation of momentum.

  The area under the curve on a20;tlvzldb8 u q kz1y- Force versus time (F vs. t) graph represents

  Which of the following is an acivi-d w8l p7k ic/ uh9s7rc8o9curate statement?

  A small car meshes with a large truck igm25)yq7b s23s wlacxn a head-on collision. Which of the following state 5mglb7 awsxq2s)2y 3cments concerning the magnitude of the average collision force is correct?

  Two equal mass balls (one red and the other blue) are dropped mi4i3 vda8jzl:fi:a 3qq 7es2from the same height, and rebound off the floor. The red ball rebounds to a highe2 asl e4 3:qidiimv:q7j38z afr position. Which ball is subjected to the greater magnitude of impulse during its collision with the floor?

  A Ping-Pong ball movi3w :hq-p (qrfot,7.wdrbr8m q ng 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 the greater magnitude impulse during the c rbpwthqfrmwq- ( o ,8dq3r7:.ollision?

  Two objects collide and bounvg;veud:g;8 hr0sdav-jk .7.4drt xice off each other. Linear momentum

  A 3.0-kg object moves to the right at 4.q7kc ajv o: u*x-fgqzl4g6) d+0 m/s. It collides head-on with a 6.0-kg object moving to the left at 2.0 m/s. Which statemenxcl7j +fz qqog g) 4u-da6vk:*t is correct?

  A 100-kg football linebacker moving at 2.0 m/s tackles head-on an 80-kg half*ci4 2,v5pt f7gxvinubackvu4pvi5i,t c n72fx* g running
3.1 m/s. Neglecting the effects due to digging in of cleats,

  In an elastic collision, if the momentum is cc f- 2,f4yb9dc(zwvzfonserved, then which of the following sta(c4df y-c fvzb2f9wz,tements is true about kinetic energy?

  When is kinetic energyj wqswj6/1b,z dqe 7;k conserved?

  In a game of pool, the white cue ball hits the al.rc( / .2g jkg*p -irhbypp3#5 ball and stops, while the #5 brrcpa..-gj *b ph (yk32lgip/all moves away with the same velocity as the cue ball had originally. The type of collision is

  When a light beach ball u9bfg)v2) ytmhbksc, 66r5zzrolling with a speed of 6.0 m/s collides with a heavy exercise ball at rest, the beach ball's speed after the coll hm2r5btc v6k)9zzy, gf)s b6uision will be, approximately,

  A golf ball traveling 3.0 m/s to the rigf+m o /ls jzj*,eb2z ci yd74,x,),wei:lvynz ht collides in a head-on collision with a stationary bowling ball in a friction-free environment. If the c e)f *ymo/iev dz2jclnwxil7jz,4 ,z, +,:sybollision 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 elastically with an idengu65btz s9 v-xtical ball at rest. What is the speed of the9bg uv6z st5-x initially stopped ball after the collision?

  A very heavy object moving with speed v collides hexai+9ml6 oy*f /n+02 e wkusflme8*ycad-on with a very light object at rest. The collision is elastic, and there is no friction. The m2esfnkyw**6fum+8iel09+ ycl / oaxheavy 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 pxnih/:li,z y*y,gawv074x u2gtfk1vgts 7: object at rest, in a frictionless environment. The collision is almost yx iv,7p v,uw:n2g y17f *tlhaz 0g/gis:xk4tperfectly elastic. The speed of the heavy object after the collision is

  A red ball with a velocity spc l*ao/ 6p s5i4rc,/up g)wvof +3.0 m/s collides head-on with a yellow ball of equal mass mov 5ogw6sap/ p4 l)iu*p,ccr/v sing 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 25 /jvrbvdj q blc8s00s:w 1diwith a very light object moving with velocity -v. The collisio:s0/8dcdivb2sb50j 1 l rqj vwn is elastic, 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, if the momentum is conservef7ic:d ma4) gdd, then which of the following stat a4 :cm)i7dfgdements is true about kinetic energy?

  Two objects collide and stick together. Kinetic ex+::vwho59tw bg elf1mi) v5w nergy

  A 3.0-kg object moves to the right at 4.0 m/s. It colga os: l les+1d1o xwwek )(h5vl0b8q;lides in a perfectly inelas:wq1dvos lbsxgo+5; 0lk 1wa e)e8(l htic 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 experiswf7 djn/jyze 2z4+v +ences the la jn7 syz +jvw2+fd/ez4rger magnitude of momentum change?

  In a game of pool, the white cue ball hits the #9 ball and is defldu7u9u v ur,z*ected 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 massesms gjjt7ez4v ntk8;jx)1-0 ys, M and m. Which of the following statements is false? jk)0 1smne8j xtv;jys-z4 7tg

  Which of the following is a false statemenx+).8,n y zl tct9kblft?

  Tightrope walkers walk with a long flexible rod in order t 5psb91x3eqqi 9qmjg8o

  A plane, flying horizontally, releases a bomb, which explodes before 2 daxh(uoc4- :5h:klr.fc gssmc:e9 dhitting the gxdk less:-c(cad ru94 m h:2o.g:5fhcround. Neglecting air resistance, the center of mass of the bomb fragments, just after the explosion

  Two cars collide head-on on a level friction-free y vlln,(8zfffs.7;/ ikz qbbc 6j/tu6road. The collision was completely inelastic and both cars quickly came to rest during the collision. What is true about the velocity of this system,ukjc 6bl.y/ftbnzv;67zq/l f 8sf i('s center of mass?

State Newton's second + x( ;twpit (nsvz)4pf.enh27 /h grztlaw for a system of particles.

  What is the momentum of a 2000-kg trucy0v wfk3s;i 8nk traveling at 35 m/s?

  A 1200-kg ferryboat i5etvix j) k.,ijg*f; cs moving south at 20 m/s. What is the magnitude of its momentvkftigj *;5 .i,xj) ceum?

  A ball of mass 0.10 kg is dropped frovqxu.d cl; e6k*-k.lcaxh *8cm a height of 12 m. Its momentum when it strikes the gro .v* ehkc8-6;kq lldxcx*ua c.und is

  Two identical 1500-kg cars are movisc2j 2.)6 . keex )ebnnmki6syng perpendicular to each other. One moves with a speed myc jb2ns.6enxe).2k6 eksi) of 25 m/s 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 z()esto58 iid at 30 m/s, strikes a wall and rebounds at 24 m/s. What is the change in the moment(edz8to5 si)ium of the ball?

  A 0.060-kg tennis ball, initially moving at a speed dqr /m4sv2 t-wof 12 m/s, is struck by a racket causing it to rebound in the opposite direction at a speed of 18 m/s. What is the change in moments2 wqtm-vd/r 4um of the ball?

  A 50-kg pitching machine (excluding the baseball) is placed on a fr5mb+ xr7fw(a mk)8 qwzozen pond. The machine fires a 0.40-kg baseball with a speed of 35 m/s in the horizontal direction. What is the recoil sp)bm8 q (5x+7awrmfwzk eed of the pitching machine? (Assume negligible friction.)

  A 70-kg astronaut is space-walking outside the space capsule a 8ggccnb kd9.mx.y5a-nd is stationary when the tether line breaks. As a 9bx8-g5 .mkca .cdny gmeans of returning to the capsule he throws his 2.0-kg 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 mv e+qif.s4e6j .:lyvh omentum 5.0 kgm/s approaches head-on a large object at rest. The small object bounces straight back with a momentum of magnitude 4.0 kgm/s. What ysqh.l.ee 4i+vjv f 6:is the magnitude of the large object's momentum change?

  You (50-kg mass) skate onwz5fwx)vj/i.wh4; h j ice at 4.0 m/s to greet your friend (40-kg mass), who is standing still, with open arms. As you collide, while holdinghh5jwvi fj4 )w./;wzx each other, with what speed do you both move off together?

  A car of mass 1000 kg moves to the right along a level, straight road at s1rd9cpewt4mi ) , bo6a speed of 6.0 m/s. It collides directly with a stopped motorc96ie 1wdc4s p) tor,mbycle of mass 200 kg. What is the total momentum after the collision?

  A 1000-kg car travell987iq8vl/k d uk/uxuing at 25 m/s runs into the rear of a stopped car that has a mass of 1l8k lu/i8uq7 k/u9 dxv500 kg and they stick together. What is the speed of the cars after the collision?

  A railroad freight car, mass 15,000 kg, is allowed to coast along a u2 gn vw13,dk kkke4+zlevel track at a speed of 2.0 m/s. It collides and couples with a 50,000-kg second car, initially at rest and wit +z2nvdwgkkke1u3 k, 4h brakes released. What is the speed of the two cars after coupling?

  A railroad car, of mass 200 kg, rolls with negligibleu;mg(m cko uh(3yg 8b(w+ litff3-l-v friction on a horizontal track with a speed of 10 m/s.(+- ;w(k3g8uo gm(lff3lb um-chyitv 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 * u.vx6lk:ucwx:8fkurate of 0.80 m/s (with respect to the log). :u8:fckw6 k* xlxu.uv With what speed does the log move, with respect to the shore?

  A 4.0-N force acts for 3.0 s on an ob5zimg1x nq* q(ject. The force suddenly increases to 15 N and acts for one more second. What impulse was imparted by these forces to (x mgin1 *5qzqthe object?

  A constant 9.0-N net force acts for 2.0 s on a 6.0-kg object. What is the obe bbhv1 f58/vfject's change off/hfb 8evv5b1 velocity?

  A 2000-kg car, traveling to the right at 30vk3(5 hx4 x/np hfo2wu*b3fbs m/s, collides with a brick wall and comes to rest in 0.20 s. What is the average force the car exerts onuh/3son f5 b2 4w3*kvf(xb xhp the wall?

  A 2.0-kg softball is pitched to you at 20 m/s.3,un m0mhydn90 )xis86k:x4a)m znoa ( izqeu You hit the ball back along the same path, ( dneu)omi us)y0z:kz,qa h9 i6na0mx8 nx34mand at 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 ont2wql 0+it+ ;1pba50 ltefh pngo a table top. The speeds of the ball right before and ripgl20a+pwet 0;1lbtfqnhi5+ ght 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 on the ball by the table top?

  A machine gun, of mass 35.0 kg, fires 50.0-gra2clp2;p;a: rx8mrd lim bullets, with a muzzle velocity of 750 m/s, at the rate of 300 rounds per minute. What is the average force exerted on r2ap 2:lipd;c8lmrx; the machine gun mount?

  A fire hose is turned on the door of l*ou3rwl,p z 7a burning building in order to knock the door down. This requires a force of 1000 N. If the hose delivers 40 r u,lozp7l 3*wkg 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 at the rate of 120 kg per minujyt * ju*)hg)zte. It falls 3.20 m to the ground. Assuming the water doe* )tug zjh)j*ysn'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 af(uj:o gi-* kbfter 3.0 s, when fire-u j: *iofgb(kd straight up. What average thrust force does the rocket engine exert?

  Two astronauts, of masses 60 kg and 80 kg, are initially at rest in outer snsth0rtf x((k* 3;r lk(v3ttrpace. They push each ottt;nfrrvt (t 33x0hsr k(* (klher apart. What is their separation after the lighter astronaut has moved 12 m?

  A 3.0-kg object moves to the right with a speed xvkj u o d+.z2d9:bjw8of 2.0 m/s. It collides in a perfectly bwdj+u 92dvj x z8:ko.elastic collision with a 6.0-kg object moving to the left at 1.0 m/s. What is the total kinetic energy after the collision?

  A 0.10-kg object with a velocity oe gw9.16fmp41ug 3g7ivgf g asf 0.20 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 vesfpugi91m ae gf4gv1g.6 3wg7 locity of the 0.10-kg object after collision?

  A 10.0-g bullet moving at 300 m/s is firj+4 l f1w*r2rj b x/klr,21p-n* gyh3 kgdrqired 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 b1*kjg231 * xrirrkw4r2, gf+yr qpj-hl/ndlblock right after the collision?

  A proton, of mass m, at rest, is struck head-on by an alpha-parti. 2h d n4m:n6 /utzutgd3wik9icle (which consistsm9id nu324.d h iw/6kgznutt: 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 the neutron's mass equals the proton's mass.)

  A 50-gram ball moving +10 m/s collides head-on with a stationary ball ooo3k ,gi6pi 9 uodr.a*f mass 100 g. The collision is elastic. What is t orik9uo3.6 a,gido*phe speed of each ball immediately after the collision?

A ball of mass 400 g moving toward the east with a speed of 3.70 m/s collid3a b6 ;uzeu ctvk58k.hk k2gd5n-yr(ges head-on with a 200 g ball sitting at rest. The collision is perfect( 3 bzg85kkvcgtn a ye25uk;6-urk.h dly 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 z7pnl7)crib5v8 yh dk7 fxuf29 :k5gwof 5.0 m/s. It collides head-on with a 3.0 kg mass at rest. If the collision is perfectly inelastic, what is259dirkpuh7 5 7nxvlbfzg: kc )f8wy7 the speed of the masses after the collision?

  A 2.0-kg mass moving to them) z1z *z/w1av2 s2jv k)akhhz east at a speed of 4.0 m/s collides head-on in a perfectly inelastic collision with a stationary 2.0-kg mass1hzw*v2azva z) h1)jzs k2/k m. How much kinetic energy is lost during this collision?

  A car of mass m, traveling with a velocity v, strikes a pa9u6 hid8g3gdk) d2zhgrked station wagon, who's mass is 2m. The bumpers lock together in this head-9hg)h6zg 38d 2kddgi uon inelastic collision. What fraction of the initial kinetic energy is lost in this collision?

A 15-g bullet traveling 2139n.9kmallbjkkf o95f,. iym+ m/s in a vertical direction buries itself in a 2.4-kg block of wood a rest directly above it. As9mk,5o bf+aly.9m.ifkjlk9n 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 at 90.0 km/h east co 6tompi ncx-5p4 l s7op)snv*(llides with a 3000-kg car traveling at 60.0 km/h south. The two cars stl c(nx-*v 65 tpss4)mppnoo7iick 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 with a 3000-kg car travepd1 37ia6 ml7t m0rmo50kuvy.bb*g a tling at 60.0 km/h south. The two cars stick together after the collision. (See Fig. 7-1.) What is the direction of m17utytvar3m0kpb0b*adi6l 7. 5 omgmotion of the cars after collision?

  Two objects move on a level fr2 ,*;gbxzlwqct uu(0 e:cs1q hictionless surface. Object A moves east with a momentum of 24 kgm/s. Object B moves north wiccl:b ,*x su(wu;h0g tqqe1z2th 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 the North with a velocity of 4.0 *l 3f wv52 ci0wa4ozuwm/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 fragmenticw3wf04aw2v lzu 5*o 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 the origin, and a 10.0-kg mass sits atasba qsy320vv5lsx ;,9 gxuy) x = + 21.0 m. Where is the center of y3;y,l5aqx)g u xsa9vv s2sb0mass on the x-axis?

  The center of mass of a two-particle system is /7*/otd+xnxpa; t qi,htx6 ii r/6fhyat the origin. One particle is located at (3.6hx i;ta6t /otfq x ,ry hnp//xid*+i70 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 kgx:aovh, .anuww4 / *ls at (2.0, 0), and 4.0 kg at (2.0, 1.0). Determine the .a/o4wvnla: hw ux,*scoordinates of the center of mass.

  Three masses, 1.0 kg, 2.0 6 axe6o +copkvr8+2fi 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 ofik 6pc+v+x8fa o6 er2o the center of mass of the system?

  A 3.0-kg mass is positioned 2 5wz.pt(u6nb qv)zgdg8 nj /kat (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 of the system of three masses being locabwq/u8)z d26j 5kgtz v(gnp.nted at the origin, (0, 0)?

  Use Table 7-1 to calculat+ix8ysfn4l+ et, gl*g e the position of the CM of a whole leg including the foot when the leg is st4 ei++g8n ,xtslylgf*retched straight out. Assume the person is 1.60 m tall.