What is the SI unit ofyh 56:)f+srzd vt;y hs4rzpo0 momentum?

  When a cannon fires a cannonball, the cannon x*1qw kucpl) 9will recoil backward because the

  A freight car moves along a frictionless level railroad tracu3d9y ls4p 8v*h+jwcjk at constant speed. The car is open on top. A large load of coal is suddenly dumped into th4u*j3p9 y v8sj+w clhde car. What happens to the velocity of the car?

  A child falls sideways off a sled 2zmnd+i;ci n(:q)w h 4,sbsrg7m pka2 while sledding on frictionless ice. What happens to t2 si ich7 w+mm:( n2q4rkazg,psd) b;nhe velocity of the sled?

  A rubber ball and a lump of putty have equal mass. Theys)m*q7d6hu;z h1c pgb are thrown with equal speed against a wall. The ball bounces back with nearly the sa )zuhsc1 gbmd*;q 6h7pme 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 wij6+v2/6z0 axyfpk:ub3etts y th a momentum p. How would you represent its kinetic e:p63t yu sf6vj0y zkxe2at/+bnergy in terms of these two quantities?

  If you pitch a baseball with twice the kinetic energy you gave it in the previon7mu d(sf u::zus pitch, th7nsum(z f :ud:e magnitude of its momentum is

State Newton's secon7: oiq8 wsgvr2d law in terms of momentum.

State the law of conservation of m301 zkpf xs y*/ 4czkbaatpsgnnp,;:1omentum.

  The area under the curiuv8 rv7;90xb5gc7l k-fpv yhve on a Force versus time (F vs. t) graph represents

  Which of the following is ky)mz. 5qr .au 14ebhpan accurate statement?

  A small car meshes with a large truck in a head-on co9jab,o:o sn 8rc9 q x9ru.s;wcllision. Which of the following statements concerning the magnitude of the average col .ox989qcuoasnbcwj;s 9rr:,lision force is correct?

  Two equal mass balls (one red and the other blue) are dropped from thmzo 0sz/f+.b 1;m cdxee same height, and rebound o0x ze m+ f;bo.zdc1ms/ff 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 east at a speed of 4 m/s, col hfh.j 0:sq5ede0) sfc5v/f pnkd( n(vlides 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 experienhh5f/v 0de.q0fnsdp( n5: jk)( secv fces the greater magnitude impulse during the collision?

  Two objects collide and bounced,ruxs qm/y 82 off each other. Linear momentum

  A 3.0-kg object moves to the right a, )hwum)yjnbm7 cx7o9sxl s +4 6(9q4n mmpyvnt 4.0 m/s. It collides head-on with a 6.0-kg object moving to the l omnbwm 67 ,+jsxny)9x m4n7vs9 )pm(qucl4yh eft at 2.0 m/s. Which statement is correct?

  A 100-kg football linebacker mk ww+d)q ;o*af+,mirvq*bpv:oving at 2.0 m/s tackles head-on an 80-kg halfback runnibv;+fkdpoiv :m aw*wq*q),r+ ng
3.1 m/s. Neglecting the effects due to digging in of cleats,

  In an elastic collision, if the mom 6nx5vpe1 )pxzentum is conserved, then which of the following statements is true about kp 6pzv1xex5 )ninetic energy?

  When is kinetic energj/-1 ugaoht kk1/y ppkph165yxve 7:my conserved?

  In a game of pool, the white cue ball hits the #5 ball and stops, while the #5 l:ri:mj zoo7h0 trz*)ball moves away with the same velocity as the cue ball had originally. The type of co*jrzolz:) h0 om:rit7llision is

  When a light beach ball rolling with a speed of o,uemv;+nc 9g 6.0 m/s collides with a heavy exercise ball at rest, the beach ball's speed after the collision will9 ,evcm;go+ nu be, approximately,

  A golf ball traveling 3.0 m/s to the right collides in a head-on collision w 7vs3j78gmzxgs 18hq tith a stationary bowling ball in a friction-free environment. If the collision is almost perftg77hjq183 s8mvzxs gectly 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 elax5z8ia)fv,5 b 8 gtjtkstically with an identical ball at rest. What is the speed of the initiaft zkx8 gj5v)it8a 5b,lly stopped ball after the collision?

  A very heavy object moving withi+5b0-v oe jm66dloqj :qcf8e 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 8-:mb06ojqdefeo lq cv5+ j6 ispeed of the light object after the collision?

  A very light object moving with skniwd+0aei6 d1 9q2 c(g.op lz-hk6 pyee;vk *peed v collides head-on with a very heavy object at rest, in a frictionless environment. The collision is almost perfectly elastic. The speed of the hea2. iz6 d- 1pcely6w0hekedp;+g kni9 a(vqo*k vy object after the collision is

  A red ball with a velocity of +3.mkuc p2y46e 6))jt qax0 m/s collides head-on with a yellow ball of equal mass moving with a velocity of -2.0 m/u2 m6 etykq)ca46x)j ps. 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 light jgk,j/1-xaref5k )ad knx pvn/d w 52(object moving with velocity -v. The colli5j(g ak ,k /-xpxedwfnr1d)2j /nv ka5sion 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 colluyvws8; 7y5z aision, if the momentum is conserved, then which of the following statements is true8; wy5uvayz s7 about kinetic energy?

  Two objects collide and stick tow0qf9c*.b jq ygether. Kinetic energy

  A 3.0-kg object moves to the right at 4.0 m/s. It c1kfi3 yn; oje:ollides in a perfectly inelastic collisio3efky:ni1 o;jn 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 larg5 s ho3tzkds(o d2u:/le object and sticks. Which object experiences the larger h: k2z/su3d( stool5 dmagnitude of momentum change?

  In a game of pool, the white cue ball hits the #9 ball and is deflec/yk:qz d 9et-pfmmmdyzd8k 8/7:s-ibted 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 and n +mp9t67/c eulecy4y m. Which of the following statements is fals/p 9ctyu n4l6ee ym7c+e?

  Which of the following is a false st*crih u r8sdhw)/51xa atement?

  Tightrope walkers walk with a long flexible rod in orderbivn7fmumq(sz(8f0 ok1 v;u; to

  A plane, flying horizontally,wu ,nbwng03*j23fxik releases a bomb, which explodes before hitting the ground. Neglecting air re bn3u,x30gf2inwwk j *sistance, the center of mass of the bomb fragments, just after the explosion

  Two cars collide head-rane0gl 53q 7u 4jbm;8zn6i bton on a level friction-free road. The collision was completely inelastic and both cars quickly came to req7n4j;btn mb 8uzlea 6gr i035st during the collision. What is true about the velocity of this system's center of mass?

State Newton's second law for a system of s(w y)cg rw-8a:bqgr2particles.

  What is the momentum of a 2000-kg truck travelingt bxbqnqoh, iy0x::4. )ixn0f at 35 m/s?

  A 1200-kg ferryboat is moving south a:z-wqput t r87t 20 m/s. What is the magnitude of its momentu-u :q8 ztp7twrm?

  A ball of mass 0.10 kg i u7sptkw7s -5ss dropped from a height of 12 m. Its momentum when it strikes 7sks5wus7tp- the ground is

  Two identical 1500-kg cars are moving perpendicular to each other. One moves wip nv11sowe icg6zf(*/a , .jjpth a speed of 25 m/s due north and the other moves at 15 m/s due east. What is the t j1vnpaos i6e1, (cfjz/gp*.wotal momentum of the system?

  A handball of mass 0.1;0ugqc0 ;z vjv3tvf6m 0 kg, traveling horizontally at 30 m/s, strikes a wall and rebounds at 24 m/s. What is the change in the 0v ;m cgjztfu;6v0qv3momentum of the ball?

  A 0.060-kg tennis ball, iniaw :( ns/n+q .cwigp.utially moving at a speed of 12 m/s, is struck by a racket causing it to rebound in the opposite direction gin/cu pqsw:.aw.n +(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 a frozen po5kde,f z:7xgm jcje8 nw2z// pt;1rze nd. The machine fires a 0.40-kg baseball with a speed of 35 m/s in the horizontal direction. What is the r8/ j7kgem21, ftp5;z /zzcxerj:wednecoil speed of the pitching machine? (Assume negligible friction.)

  A 70-kg astronaut is space-walking outside the space capsule and is stat- e:krp( nr4wnionary when the tether( :nenrw4-rpk 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 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 og.zt (meh*afvk( 54 ra large object at restk tv*rf. gz(h 54(oame. The small object bounces straight back with a momentum of magnitude 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 frienq26 cxah2siy +tq: t.zd (40-kg mass), who is standing still, with open arms. As you c ai +sht2.txz c6q:qy2ollide, 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, str dgk*fl0jyi8o 5g :dc.u7np0laight road at a speed of 6.0 m/s. It collides directly with a stopped motorcycle of mass 200 kg. What is the total mom .g:d0 n05ld 8 7c*fliojuygpkentum after the collision?

  A 1000-kg car traveling at 25 m/s runs into the rear of a stopped wm;lwkqaob(:q d ,av5mgk w) jer93(/,su ,cpcar that has a mass of 1500 kg and they stick togethwpm aw3b,a qo cw:gvs9(jek ,/;)klmq(,ru d5er. What is the speed of the cars after the collision?

  A railroad freight car, mass 15,000 kg, is allowen -h*gn8b/v cdd to coast 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 and with brakes released. b/ dnh-* gvn8c What is the speed of the two cars after coupling?

  A railroad car, of mass 200 k (ae6uuf h4ym4g, rolls with negligible friction on a horizontal track with a speed of 10 m/s. A 70-kg stuntu m64euf(y a4h 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 o wbhwg;5a*me *f 0.80 m/s (with respect to the log). With whag*em*bwwah5 ;t 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 inc3wabm)2p+ ek yreases to 15 N and acts for one more second. What imp3pmwy k+eb2a)ulse was imparted by these forces to the object?

  A constant 9.0-N net force acts for 2*+ln psrl6h0nf yq-q1.0 s on a 6.0-kg object. What is the object's change of velo-psnlh*f6+q1ql0y r n city?

  A 2000-kg car, traveling to the right at 30 m/s, collides with a brick wall an d)8jzr oc5,xed comes to oredj5x ),c 8zrest in 0.20 s. What is the average force the car exerts on the wall?

  A 2.0-kg softball is pitched toea,oup)x +8jm 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 for 0.10 s, what is the magnitude of the average force the bat exea) +xmu, pe8ojrted?

  A 0.10-kg ball is dropped onto a tably 9+lij7,jbi/g kiy7re top. The speeds of the ball right before 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 on the ball by the table i9, gki/yj7 rlby+j7 itop?

  A machine gun, of mass 35(p / *97m okwjmrq k;d5q7kiwu.0 kg, fires 50.0-gram bullets, with a muzzle velocity of 750 m/s, aio kq/5kmj*79dwu;r 7 (pwqk mt the rate of 300 rounds per minute. What is the average force exerted on the machine gun mount?

  A fire hose is turned on the door of a burning building in orde46 apqdr95ah r k,g8tyr to knock the door down. Th,d9gpr8h r t4qy 65kaais 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 horizontal drainpipe at the rate of 1y,7kyz q3elxa1va- +va4o :dj 20 kg per minute. It falls 3.20 m to the ground. Assuming the water doesn't splash up, what average force does it exert on lao- v7ak y,4e:qjvxda +z3 1ythe ground?

  A toy rocket, of mass 0.12 kg, achieyb7 cze/m8qe1 ves a velocity of 40 m/s after 3.0 s, when fired straight up. Wha7 zbqecy1m8/e t average thrust force does the rocket engine exert?

  Two astronauts, of masses 60 kg and 80 s-oq t, z1m7efkg, are initially at rest in outer space. They push each other apart. What is their separation after the lt 7sm-eoq,1fzighter astronaut has moved 12 m?

  A 3.0-kg object moves to the right with a speed of 2.0 m/s. It collides in a per0 5 fhb,ttmwk1u-vt7+r e8l lqfectly elastic collision with a 6.0-kg objectt5w 7t, 0-lheut1+8 l rmkfbvq 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 of 0.20 mjv4h )cp2hx 7m/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 objech4vm jpc2xh7) t after collision?

  A 10.0-g bullet moving at 300 m/s is fired into a 1.00-kg by q8p*uilc .pguxd:qz44fpbl*2 kv *) lock at rest. The bullet emerges (the bullet does not get embedded in the block) with half of its original speed. What is the vel.fqyb4vl)i lxp:zu 8qp**gkp *d u 42cocity of the block right after the collision?

  A proton, of mass m, at rest, is struck head-on by an alpha-p4gteu 1tn(rm1(,tr 5kjzt w + :mgixt;article (which consists of 2 protons and 2 neutrons) moving at speed;t1tk4tnuj,txrg+g i (w (mme: tzr51 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 of mab4b 2/hpb g/ 9,n*geupbkad6yss 100 g. The collig d 6pubb /2a,yk9bb* 4gneph/sion is elastic. What is the 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 collideg- wvgnz8o563)eis/ yuu ng 7ts head-on with a 200 g ball sitting at rest. The collision is perfectly elavs 6g)-n3 ezigntu7o / y5u8wgstic.
(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 2-8aps.jvhg h3.0 kg mass at rest. If thejv8a2 gh.p hs- collision is perfectly inelastic, what is the speed of the masses after the collision?

  A 2.0-kg mass moving to the east at a speed of 4.0 m/s collak0mbp)f; id1ides head-on in a perfectly inelastic collision with a stationary 2.0-kg mass. How mpmb0);idk1a fuch kinetic energy is lost during this collision?

  A car of mass m, traveling with a velocity v, stt7lm(w-tnkv3d8o7 g drikes a parked station wagon, who's mass is 2m. The bumpers lock together in this head-on inelastic collision. What fraction of the initial kinetic energy is lost i8twdkt n7d7l o- m(g3vn this collision?

A 15-g bullet traveling 213 m/s in a vertical direction buries itsely1. .wnipdo*xf in a 2.4-kg block of wood a rest directly above it. .p nydxowi*.1 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 at h lx6ei2,m (la2ncc eb:eg1 1qn- tv0q90.0 km/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 speed of the cars after v(tq2 egqcec- bin 1: 10lalmxh6 n,e2collision?

  A 1500-kg car traveling at 90.0 km/1nygr .87zi -s.wsrcyh east collides with a 3000-kg car traveling at 60.0 km/h south. The two cars stick together after the collision. (r1y8ryw-czn i s.sg .7See Fig. 7-1.) What is the direction of motion of the cars after collision?

  Two objects move on a level frif;b g;en. vx82voj* /lo m/guyctionless surface. Object A moves east with a momentum of 24 kgm/s. Object B moves north with momentum 10 kgm/s. They make a perfectly inelastic collision. What is the magnitude of their combined momentum after the collon lg bg2e8of;*jy;um/.vx/ v ision?

  A small bomb, of mass 10 kgna7lyr 2fxfgkeh/r28 75mo 0 v, 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/sk22 f/7n gr0yvmf haeox8l57 r; 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 third fragment? (Neglect air friction.)

  A 4.00-kg mass sits at the origin, and a 10.0-sl 4vz-cm. 8cry.k puo,gaz -+kg mass sits at x = + 21.0 m. Where is the center+.vzmca-k,cs p ul.8zy-or4g of mass on the x-axis?

  The center of mass of a two-particle system is at the origin. One particle isnfx ph4mx3;+jl) k .gr located at (3.0 m, 0) and has a mass of ;nxpj.lh3 m)gr xk4+f2.0 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 y:lntk5d502 outsf k) (2.0, 0), and 4.0 kg at (2.0, 1.0). Determine the coordinates of the center of mass.d: kk l5 y0ut)2ofsnt5

  Three masses, 1.0 kg, 2.0 kg, and 3.0 kg, are located at (9co;3j( lg ayd0, 0), (1.0 m, 1.0 m), and (2.0 m, -2.0 m), respectively. What is the location of the center of mass3loj(;gyca9d of the system?

  A 3.0-kg mass is positioned at (0, 8.0), 8m f+ax cl0 z-+3 ijtkn /du7d3bhii0sand 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 mass3 idb07h3t fxaci 8+0sdknz/iu+lmj- es being located at the origin, (0, 0)?

  Use Table 7-1 to calculate the6- to+ bkv)csrok2 w*koi-6jm y;d; gu position of the CM of a whole leg including the foot when the lo ow;u2g+6o cykm v-rjk-btiks)*d ;6eg is stretched straight out. Assume the person is 1.60 m tall.