What is the SI unit of momemo*8ebo q 4b*vx2e3dz/l cqp 4into))ntum?

  When a cannon fires a cannonball, the cannon will recoil backward 8u mb*r*xrqq)because the

  A freight car moves along a frictionless level railroa6rtko 8 */sbstd track at constant speed. The car is open on top. Atbt/8* o6kssr 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 whileh;zn5ey;o(:mgov 9fqtw+ b b9 sledding on frictionless ice. What happens to 59 v yw+z:gt;ehqnbom fo9b (;the velocity of the sled?

  A rubber ball and a lump of putty have equal mass. They are throxdyx/m 7e;x+/m gdlb-1t o/ixwn with equal speed against a wall. The ball bounces back with nearly the same speed with which itxi7//xxxdebgmd to-/l;y+ 1m hit. The putty sticks to the wall. Which objects experiences the greater momentum change?

  A sailboat of mass m is mov3 )+-cdz5 zvhnqjox 2aing with a momentum p. How would you represent its kinetic energy in terms of these two x3ho2nj -5qzvz d+)ca quantities?

  If you pitch a baseball with twice the kinetic energy you gave it in the pre7cls j+k.kne* vious pitch, the magnitude of its mome*7nkljeks+c. ntum is

State Newton's second pg,a , a rko00iyt7n4bos 3x6wlaw in terms of momentum.

State the law of conservatirhlbe4 w zsw5wbsz*b7i42) b, on of momentum.

  The area under the curve on aa )- a60jn/bk9pacnv o Force versus time (F vs. t) graph represents

  Which of the following is :-xxjc/ i)msh an accurate statement?

  A small car meshes with a large.rq+, 35nbkw i8qll sw truck in a head-on collision. Which of the following statements n+bksq5 wi3wllrq8., concerning the magnitude of the average collision force is correct?

  Two equal mass balls (one reaqtae .z90l) qq0un3m 5xu e5id and the other blue) are dropped from the same height, and rebound off the floor. The red ball rebounds to a higher position. Which ball is subjected to the greater magnitude of 0eiaq5az 5 0u)qt.uq n3lme9 ximpulse during its collision with the floor?

  A Ping-Pong ball moving east at a speed of8qxhzy ;6 n:.4luddhv 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 durilhz6 8v;u.nhdy q 4d:xng the collision?

  Two objects collide and bounce off each othepu1jmijza 8:3r. Linear momentum

  A 3.0-kg object moves to the right at 4.0 m/s. It collides head-on wlv4l*g,zqxw1pb g94*xtq fq )ith a 6.0-k g v9tfg,l*4* q)1pq lzqw4bxxg object moving to the left at 2.0 m/s. Which statement is correct?

  A 100-kg football linebacker moving at 2.0 m/s tackles head-on an 80-kg halfbacklelaj;t/ 47 jm run tj4/a;ml7jel ning
3.1 m/s. Neglecting the effects due to digging in of cleats,

  In an elastic collision, if the m9ev+tgpw q9u6f9kjef1 dpd2) omentum is conserved, then which of the following stateme)9uedfpt +9e2jg6 1vdq9fkpw nts is true about kinetic energy?

  When is kinetic energy conse5o3h f8x 2 ho)fj3f-s bt:2jmievz wcub*;:cfrved?

  In a game of pool, the whitx*q *h;k; fmrge cue ball hits the #5 ball and stops, while the #5 ball moves away with the same velocity as the cue ball had originally. The type of collikhfrx ;**;gm qsion is

  When a light beach ball rolling with a speed of 6jomanspf7;.h +y3 l d:.0 m/s collides with a heavy exercise ball7nhj ydm3. f :l;aos+p at rest, the beach ball's speed after the collision will be, approximately,

  A golf ball traveling 3.0 m/s to the right collideshq67t l k,v(ze*qpy p8 in a head-on collision with a stationary bowling ball in a friction-free envir7vpeklq ,y*t zq( 68phonment. 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 elyp)a i4a9/jq4d zg8lxastically with an identical ball at rest. Whatqp4xg9/ zi 4ay lda8j) is the speed of the initially stopped ball after the collision?

  A very heavy object moving with speed v collides head-on with a very ld59 o6 a b.yv9kmrr1vt 9o;6wnwb otp(ight object at rest. The collision is elastic, and there is no friction. The heavy object barely slows down. What is the speed of the light objec(69r 6vmwv.op ow o;ba nd9tt5kyb9r1 t after the collision?

  A very light object moving with speed v collp o8hbf4sj zt(b 9n)d2ides head-on with a very heavy object at 8bhs ptd2ob4)n(z fj9 rest, in 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 +3.0asjj0a6c zt66x85w op m/s collides head-on with a yellow ball of equal mass moving with a v6ca68 wo60s atjpj5z xelocity of -2.0 m/s. What is the velocity of the yellow ball after the collision?

  A very heavy object moving with velocity v c9,7u0*/6 yjspliag kr o :siqnollides head-on with a very light object moving with velocity -v. The collision is elastic, and there is no friction. The heavy object barely slows/aik6uo g*r7 lsins0 y9q j:,p down. What is the speed of the light object after the collision?

  In an inelastic collision, if the m(ixwpfa5el +j6h4o w . 4;fmmcomentum is conserved, then which of the following statements is true abo( l.mc4i f4o6whfmap+5x;jew ut kinetic energy?

  Two objects collide and stick together. Kinetic enerfizxqxh;5;kjjxy 5c.7r / n4tgy

  A 3.0-kg object moves to the right at 4.0 motx p7wgd, v6ji5d1*uopb4m0 /s. It collides in a perfectly inelastic collisi x5t poj1,pmobu4*vdw i7 6d0gon 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 largefzzik 0wro5; 55cu(xc object and sticks. Which object experiences the larger magnitude of momentum chk rcwozx(i55 ;cf5z0uange?

  In a game of pool, the white cue ball hits the #9 ball and is deflevin1.xi 0s6odb: /ljs cted 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 m. Whi4zne +9xsn x7eqkuvhv)+t):*hgofz 0ch of the following statements is false?z k0v)9u4) xhf: egnhve7q*otzxs++n

  Which of the following is a false statxw mxeda74nh-e6 pn (/ement?

  Tightrope walkers walk with a long flexible ro, pu9gc/*qtoghg3 *ri d in order to

  A plane, flying horizontally, releases a bomb, which explodes before hittin ut/c47 8rutj2qm kjm1g the ground. Neglecting air resistance, the center of mass of the bomc2m m7rtj/4 18tukuqj b fragments, just after the explosion

  Two cars collide head-on on a level fricjq98)*8i p1qfc smw pp7g b/pbtion-free road. The collision was completely inelastic and both cars quickly came to rest during the collision. What is tr7qg sb/pp8) *wfbp18 j c9iqpmue about the velocity of this system's center of mass?

State Newton's second law for a system of n;1mk) .xdd4b kbuu*lparticles.

  What is the momentum of a 2000-kg truck traveling at 35 m/s? -w.cml29 rhgpo4z-gxz: p/pi

  A 1200-kg ferryboat is mfb5x vb7gt)+ zmc;+q; r1ymxxoving south at 20 m/s. What is the magnitude of its momenxvb +tmmg cxb1 7 ;z)5xq+f;rytum?

  A ball of mass 0.10 kg is dropped from a height of 12 m. fj gfrh00vydl(z8 k. 3 Its momentum when it strikes the ground.g( kl0fdyf0 3rh 8jzv is

  Two identical 1500-kg cars are moving perpendicular to each other. One mov383 hxs.f+wtg stv jeg+ d(sn9es with a speed of 25 m/s due north and the other moves at 15 m/s due east. What is the vtg 8ndts js3w.39xhe +fg +s(total momentum of the system?

  A handball of mass 0.10 kg, traveling horizontally at 30 m/s, strikes j5 gw9(pnizgp9a3 c2e a wall and jawp(g5929zp ne3g ci rebounds at 24 m/s. What is the change in the momentum of the ball?

  A 0.060-kg tennis ball, initially moving at a speedkyez n49z4kp i (4z/nqg )qv4m of 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 mo)(94q4 4 yvzqin/z4nkmz pkgementum of the ball?

  A 50-kg pitching machine (excluding5ubt17nx sm ;wrcx/* afg,l0a the baseball) is placed on a frozen pond. The machine fires a 0.4r7s ,lag*t ;wf1xa mn/50cxbu0-kg baseball with a speed of 35 m/s in the horizontal direction. What is the recoil speed of the pitching machine? (Assume negligible friction.)

  A 70-kg astronaut is space-walking outside the space capsule and is stationa za ,v4ljw /rb:h q,*6dspr6bxry 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 away from/z,:j a pbh* ,6 wdx4vrsr6qbl 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 at rxs2 7f9ed) gokuo8 c1uest. The small object bounces straight badg o27)skco1 9ufex u8ck 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 friend (40-kg mz e+ztv4f q4b2ass), who is standing still, with open arms. As you collide, while holding each other, with what speed do you both move off togetherf t44q2ez+bzv?

  A car of mass 1000 kg moves to the right along a level, straighdrfml4wb i-5su8 ugffgr 7:mu.- w)/ht road at a speed of 6.0 m/s. It collides directly with a stopped motorcycle of mass 200 kg. What is the total momentum after f:-5-4mw.d b8ighuglusfu f /mr)r7w the collision?

  A 1000-kg car traveling at 23 sy5h qmr.0)xyhtcxo52. z nu5 m/s runs into the rear of a stopped car that has a mass of 1500 kg and they stick together. What is the speed of the cart30 . ysuo5) hxchq. 5rn2xyzms after the collision?

  A railroad freight car, mass 15,000 kg, is allowed to coast along. qu9siy9 fk1le9fm (g 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. What is t9ie(m9uq . f1glfkys9 he speed of the two cars after coupling?

  A railroad car, of mass 200 kg, rolls with negwz3:dw,ekpq6q 9 byv 8ligible 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 lan qwkep9 q6 d,8w3vbzy:ds 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 r230t6k 8teu8cj fj sa4mk4y 0kgk8jeqate of 0.80 m/s (with respect to the log). With what speed does the log mov4 8q0mje ek2k4at8kj6c jtk 08ys3 ugfe, with respect to the shore?

  A 4.0-N force acts for ,4nf(/buvm42du, qi v tkbvc,3.0 s on an object. The force suddenly increases to 15 N and acts for one mor d2/bv,vu 4if mk(t,v,4nuqcbe second. What impulse was imparted by these forces to the object?

  A constant 9.0-N net force acts for 2.0 s on a 6.0-kg o1 ke af )vj77,b+lqcwnbject. What is the object's change of velocitb ea,f)l nqc wk1v7+7jy?

  A 2000-kg car, traveling to the rms hu5 0pyn flg 93l4-st4klj/ight at 30 m/s, collides with a brick wall and comes to rest iknlypu jss03/ 5 m-ltg94l4hfn 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 ball back along theh30eap cf 9x 5;syaq0e 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 90heqf0 ;pesaay35xcthe bat exerted?

  A 0.10-kg ball is dropped onto a table top. The sp 3rx r9fsdr*88mns ii:oba)3 jeeds 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 for9fnr o38r) 8*da isi m:sxr3bjce exerted on the ball by the table top?

  A machine gun, of mass 35.0 kg, fires 50.0-gram bullets, with a muzzle velokzlvuy4hsi( ()yu, +ecity of 750 m/s, at the rate of 300 rounds per minute. What is the average force exerted on yuke(sy ivzl 4h)+(u,the machine gun mount?

  A fire hose is turned on the door of a burning buildi0eit3wido7 y 7ng in order to knock the door down. This requires a force of 1000 N. If the hose deliy3t 7od7i0e iwvers 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 rax zdwv* 87z(bnte of 120 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 the gro( w7x8bzzdn* vund?

  A toy rocket, of mass 0.12 kg, achieves a velocityw - 4s7nfwbvb,1r rn*y 3aeu1nsv)g -d of 40 m/s after 3.0 s, when fired straight up. What avryb 1nsv4s n n bdf,r-71 *ew-3wva)ugerage thrust force does the rocket engine exert?

  Two astronauts, of masses 60 kg and 80 o8pq kk)+:f ,wzyvf1t kg, are initially at rest in outer space. They push each other apart. What is their sek1f8kp)z oy+wvq:t f,paration 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 collir k6yy mp5ee( v 6x8q)gp:ra89o8y ixbdes in a perfectly elastic colli)p8eiy q 95bmyv8p6e ya r:r(o6x8gkxsion 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 of 0.20 m/s in the +x direction makes a head* z t1elh:cg)t-on elast czettg :)1hl*ic collision with 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 fbp z)2qofg-9 jired into a 1.00-kg block at rest. The bullet emerges (the bullet does not get embedded in the blocz )-fj92qbgo pk) with half of its original speed. What is the velocity of the block right after the collision?

  A proton, of mass m, at rest, is iegp 0sr1; ofy4 mk v*pn)+y.fstruck 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 tp1erfmknf*iy+.oy ) s;4 0pvghe 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 n f*+ck,x;1z5g 1nrzs xebbwhp6w( q ,ball of mass 100 g. The collision is elastic. What is the speed of each ball immediately after the collissc nxwb5qzx ,;fpbw+ 6g r,1(*ekh1 znion?

A ball of mass 400 g moving toward the east wiiup , 5o xuz d5qs*,xu2t-mau)th a speed of 3.70 m/s collides head-on with a 200 g ball sitting at re2* 5u5pu) -toqmx xiu ,u,sdazst. The 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 5.0e 8f 2r3on*maf m/s. It collides head-on with a 3.0 kg mass at n 2f o8f*eamr3rest. If the collision is perfectly inelastic, what is the speed of the masses after the collision?

  A 2.0-kg mass moving tof k:0 /s9z esgh 9eyh8o,ja-nh the east at a speed of 4.0 m/s collides head-on in a perfectly inelastic collision with a stationary 2.0-kg mass. How much kinetic eneroyekh ag0fess-j9nh ,9: 8z/h gy is lost during this collision?

  A car of mass m, traveling with a velocity v, strikes a par5-kt.p ckes 6x7w16z8n pv w f:q;y58zhqaqmiked station wagon, who's mass iqy8tz s;wcen:kf 1 k .q a p5z6x8pqih67-wvm5s 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 in76d yzk9 a:s(r6beqxm a vertical direction buries itself in a 2.4-kg block of wood a rest directly above it. As a result, the bullet/bloc7y d66(qbkrex 9s:am zk 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-kgfh /9a 9yt koeuse1*.b car traveling at 60.0 km/h south. The two cars stick together after the collisionsk1/h9atu b*y9 efeo. . (See Fig. 7-1.) What is the speed of the cars after collision?

  A 1500-kg car traveling at 90.0 x/ z 65dhyybv;km/h east collides with a 3000-kg car traveling at 60.0 km/h south. Tv/ 5;xy dy6hzbhe 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 sk:p)etj 2yh 7wurface. 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 tt hp:wky7j) 2eheir combined momentum after the collision?

  A small bomb, of mass 10 kg, is moving toward the North with ahdl/0k26s7g+7hqtcg e s-aeli (bem is.,/ff velocity of 4.0 m/s. It exi-sete0h . +b/m gcl2eh/f 7a g67ilsq fd,ks(plodes 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 third fragment? (Neglect air friction.)

  A 4.00-kg mass sits at the f jspj5r, xxck2*5hpb41vf8 iorigin, and a 10.0-kg mass sits at x = + 21.0 m. Where is the center of mhc12j p85sp*j5k,vx4i xb frfass on the x-axis?

  The center of mass of a two-particle system is at the origin. Oneq *3vai:u9mo d particle is located at (3.ud a:i v3m*o9q0 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 foll (3lazl 91+yny zssq (fw2hu+cows: 2.0 kg at (0, 0), 2.0 kg at (2.0, 0), and 4.0 kg at (2.0, 1.0). Determine the coordiny (zy +lqzc2l93nfaswu h1+ (sates of the center of mass.

  Three masses, 1.0 kg, 2.0 kg, anc8.j*fo pc o8od 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 centej8 *oco pf.8cor of mass of the system?

  A 3.0-kg mass is positioned at (0, 8.0), and a 1.0-kg mass is posit ).x8w7ln unshv(p 73hvsg3bvioned at (12, 0). What are the coordinates of a 4.0-kg mass which will rx nvsb3 hs(hpvw )8v7u3gln7 .esult 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 whocs0z+th +; 6 uf)g ro;azyhm)gle leg including the foot whe)6;gh s0+ahmofcuz+ r )gt;zyn the leg is stretched straight out. Assume the person is 1.60 m tall.