What is the SI unit of mome5)x)v 6ew +ngt1r hsdvntum?

  When a cannon fires a-y0hb nx 6 :lew)o 4umgogk3h( cannonball, the cannon will recoil backward because the

  A freight car moves along a frictionless level railroam7 hd6v 7fcnfwcj5 9b 52xgp/ed track at constant speed. The car is open on top. A large load of coal is suddenly dumped into the car. What happmx9weff vhg7/6n 57 25ccjpdbens to the velocity of the car?

  A child falls sideways off a sled while sledding on frod1w*;8ns hqnjkn56z;8d)c-vkzn zp ictionless ice. What happens to the velocity zn8 h5o ;nkj-wnk*q1 8scznv)6 ddpz ;of the sled?

  A rubber ball and a lump of putty have eq (.rj2y kbwed an98n,l p/.swaz8yt +zual mass. They are thrown with equal speed 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 grezy/nb 8ytj w8. ,(dnkeasl+wz.r 9ap 2ater momentum change?

  A sailboat of mass m is moving with a momentum p. How would you represent its m(mpe 9wkp szg)t )9/kz1,ip xkinetic energy in terms(msmep9p x /ztw gi,)z1kk) p9 of these two quantities?

  If you pitch a baseball with twice the kinetic energy you gave i:wu4i 4eae((i)0bhcq2b cdva t in the previous pitch, the magnitude of its momedb q0 ic w4c2 vu4ba(:e)e(hiantum is

State Newton's second law in terms ovo4 s7ww2yq n,+ hwcd6f momentum.

State the law of const 7 hg;u3fuur kop2-i:ervation of momentum.

  The area under the curve on a Force versus timemo 5;q.if*piy (F vs. t) graph represents

  Which of the followin.w1id:d 4 u w n89z*fvewrc0rhg is an accurate statement?

  A small car meshes with a large truck in a head-on collision. Which of t4e 7vr;p.bew the following statements conc;wr bvp7.t 4eeerning the magnitude of the average collision force is correct?

  Two equal mass balls (one red and the other blue) are drop c1*orjd49do vped from the same height, and rebound off the floor. The red ball rebounds to a higher p9v*rj c4 o1oddosition. Which ball is subjected to the greater magnitude of impulse during its collision with the floor?

  A Ping-Pong ball moving east at s xg::l-3jn bb0tldlou3p6 .za 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 ml jspl30l. :b 3ung:x-db6 zotagnitude impulse during the collision?

  Two objects collide and bounce off e* y c7ah3pr)lqg4f; u7qe5c bzach other. Linear momentum

  A 3.0-kg object moves to the right at 4.0 m/s. It colw(e(yh+w:h cc lides head-on with a 6.0-kg object moving to the lef+hhy c( (wwce:t at 2.0 m/s. Which statement is correct?

  A 100-kg football linebacker moving at 2.0 m/s tack hjgrr/,a7jg *les head-on an 80-kg halfback runnir/ , *ghagrjj7ng
3.1 m/s. Neglecting the effects due to digging in of cleats,

  In an elastic collision, if the momentum is conserved, then wh+*fn3z-9pnzeu u 7 ,md-ujlzhich of the following statements is true about kinetic - ,* -u+jn9 dnpfez luzu7h3zmenergy?

  When is kinetic energy conservx n0ki8e ,g0kja.4 ;5(m 2lyfxsuviqned?

  In a game of pool, the white cue ball hits the #5 ball and stops, while the #5 ij48 bq 08v(cmgw:w czball moves away with the same velocity as the cuv04gcb i 8cz8mw(: wqje ball had originally. The type of collision is

  When a light beach ball rolling with a speed of 6.0 m/s6mv1+ ku ;yjq06xyvj-cdw eu + collides with a heavy exercise ball at rest, the b;je+ 6 uukvxjdw61yq v c-y0m+each ball's speed after the collision will be, approximately,

  A golf ball traveling 3.0 m/s to the right collides in a head-on collision with 8dh kzw d+7 f3e4nu+/lcmk4h va stationary bowling ball in a friction-free environment. If the collision wz4l +cemn73h/dk u48+k dhvf 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 p3kx- b+3) i 8xzxajvlwith an identical ball at rest. What is the speed of thepax)3vk+xlbxz- i j83 initially stopped ball after the collision?

  A very heavy object moving with speed v collides head-on with a vexab1bbryf ss7e05gu/ z )5d k-ry light object at rest. The collision is elastic, and there is no friction. The heavy object barely slows down. What ib s )b-az0eg7/ 155ubdk xyfrss the speed of the light object after the collision?

  A very light object ms3 e lyt )u/py)a+*slmj5hwx:zy, v 8ooving with speed 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 heavy object after thyvwy,e s*h5 )pylolmz x:s+)jat 83 u/e collision is

  A red ball with a velocity of +3.0 m/s collides head-on with a yellkz 1z8b g7 ,roiwtak9fr(3 bh9ow ball of equal mass moving with a velocity of -2.0 m/s. What is 1tzr(r zko akg3, w9 h7i9bb8fthe velocity of the yellow ball after the collision?

  A very heavy object moving with velocity v collides u d,oa m5ijg t(:/.cnzhead-on with a very light object moving with velocitgj5u/ ,m.aniod:tz c(y -v. The collision 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 kqky rq((t:)n is conserved, then which of the following sta)tr qy: kknq((tements is true about kinetic energy?

  Two objects collide and stick together. Kj55hp8fjnjox;e3.dw ;d2c12p zij uuinetic energy

  A 3.0-kg object moves to the r 07vzyr wt27fiight at 4.0 m/s. It collides in a perfectly inelastic collisvtz7ify w02r 7ion 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 g5a9k37h6 dmgx;n ea-ra08vzza( ias large object and sticks. Which object experiences the larger magn 5a7 03a-ingm ;a(vhg8zs xe9 d6aakzritude of momentum change?

  In a game of pool, the white cue ball hits the #9 ball and is deflectedgxv ul6 o2:jdiiav0 01 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. Which of the following staq n56fw w+ 54rsiqfw/utements is falseus 4wfw5 +q6i/5fnqrw?

  Which of the following is a fa p-oq-7 oxbd 9m0od,6rss8dvvlse statement?

  Tightrope walkers walk with a long flexible rod in order 5jyx i lw*xj w7lt,c0-to

  A plane, flying horizontally, releases a bomb, which ex0n4reu+ /vzss2 vand (plodes before hitting the ground. Neglecting air resistance, the center of mass of the bomb fragments, just und+ naesrz2/v0vs4( after the explosion

  Two cars collide head-(o ztyywa9 n n5;c;y.don on a level friction-free road. The collision was completely inelastic and both cars quickly came to rest during the collision. W9 w dncay(5n zt;.oy;yhat is true about the velocity of this system's center of mass?

State Newton's second law for a system of particles.kl8an l,lmy 2.

  What is the momentum x2cz/pf.;z qcof a 2000-kg truck traveling at 35 m/s?

  A 1200-kg ferryboat is moving south at 20 m/s. What*mf1re zyd5x 7sks 2u4fmy,h : is the magnitude of its momentu rshm*dx5suk 4m7,1f: zyey2fm?

  A ball of mass 0.10 kg is dropped from a height of 12 m. Its moe*n8a8) fi)yrcowc3bpb2z4oe u 28r xmentum when it strikes the ground8o 2 cne)8xcw)4i p*ro3b 8rabfzye2u is

  Two identical 1500-kg cars araga uy 0(,hs3be moving perpendicular to each other. One moves with a speed of 25 m/s due north and the sy 3 gau,h0a(bother moves at 15 m/s due east. What is the total momentum of the system?

  A handball of mass 0.10 kgjqonj8oz j e/kh/-1c., traveling horizontally at 30 m/s, strikes a wall and rebounds at 24 m/s. What is the chang1 -on/oecq.k /j 8jzhje in the momentum of the ball?

  A 0.060-kg tennis ball, initially moving at a speed of 12 m/sw zqrv*pl3tp5zf a+/72x tc -b, is struck by a racket causing it to rebound in the oppos /-+ wzqp 2*t3ptz5vblfarx c7ite 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 ply3 tb d9ed6g og*ywx*,q 9wi ikmy,y87aced on 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 pitching machine? (Assume negligible friction.)9 y 96,kbm8yio,xi*gy7weqdw yt gd*3

  A 70-kg astronaut is space-walking outside the space capsule and is statio-qy ol : m(ilp**9j-qg oc+qdrnary 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 the capsule. -qr qq9*-ijlyog(cl* mp +:doAt what speed does the astronaut move toward the capsule?

  A small object with momentum 5.0 kgm/stf75s/x p0q vmvg0 sn9 approaches head-on a large object at rest. The small object bounces straight back with a momentum of magnitude 4.0 km s00xts5gv v 9q/pf7ngm/s. What is the magnitude of the large object's momentum change?

  You (50-kg mass) skate o+nn3x1l 5 godudy pnpq9pda )8.ui 4p(n ice at 4.0 m/s to greet your friend (40-kg mass), who is standing still, with open arms. As you collide, while holding each other, with what speed do you both move4 l+ (ny 9pdp15d)g u8xoqu3niad. pnp off together?

  A car of mass 1000 kg movy;w3kt/dqwrq82hq )5q 0gxwv es to the right along a level, straight road at a speed of 6.0 m/s. It collides directly with a0wd5q8q/2 h;kq wq)3 rvgxwyt 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 rear of a stopped car thr 4h-bxox3 -rij6w(aji6ena )at has a mass of 1500 kg and they stick together. What is the speed of the cars aft-6rx3biw) na-xrj h (eo6j4iaer the collision?

  A railroad freight car, mass 15,000 kg, is allowed to coast along a / +0 sjw3 sk(1scoq f6u06dvbmrhmt o9level track at a speed of 2.0 m/s. It col m3s6oswt/0sm+d fr0vokuq6 (9j hb1clides and couples 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 20)743on hao9 w,gumfr v0 kg, 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 fas4hn9, wfm)37 gavuroo t will the car be moving after this happens?

  A 60-kg person walks on a 100-kg s t9phin gvc549 9.ic+s cji-tlog at the rate of 0.80 m/s (with respect to the log). With i4ct5ic9s.g-99th cp+snvijwhat 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 incree9bcf azi;i6xz kb50 th;xr57ases to 15 N and acts for one more second. What impulse was imparted by tfa5 z5r z0kbtb6;x i;7he9cixhese forces to the object?

  A constant 9.0-N net for)ai3sorfnedl+* 3. e dce acts for 2.0 s on a 6.0-kg object. What is the object's changedn+ 3ro *le3ie)da. sf of velocity?

  A 2000-kg car, traveling to the rig cfw1+;rhwuo)6t3 jbb ht at 30 m/s, collides with a brick wall and comes to rest in 0.20 s. What is the average force the car er +wbj6b w);c3t1ofu hxerts on the wall?

  A 2.0-kg softball is pitched to you at 20 m/s. You ht ntp+ 2,:ojl* . d.:j(a0thpqtx owczit the ball back along the same path, and at the same speed. If the bat was in contact with the bahd lj (wcox p *0joqt,+ pt:.2zta:.tnll 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)evobve+c aw3e.qvgzv l 99zu h0, c8, the ball right before and right after hitting the table top are 5.0 m/s and e9l ov9+h 3,abevz wg0 v u)vc.,8czeq4.0 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-gram bullets, with a muzzle velocityqk0vxar19j0i)tzr c2 of 750 m/s, at the rate of 300 rounds per mi1vc9r xkzj02tq)0ra inute. What is the average force exerted on the machine gun mount?

  A fire hose is turned on the door of a burning buh ;mfb/ rw5q;bilding in order to knock the door down. This requires a force of 1000 N. If the hose delivers 40 kg per second, what is th /b;f;m5 bqhrwe minimum velocity of the stream needed, assuming the water doesn't bounce back?

  Water runs out of a horizontal drainpipe at the rate ofm (i0vvx6s+x a 120 kg per minute. It falls 3.20 m to the ground. Assuming the water doesn't splash up, what average force d(a 0xmxs+vi6 voes it exert on the ground?

  A toy rocket, of mass 0.12 kg, achieves a velocity of ( uyj2eb3;iz- q8zrvozo:qp/ 40 m/s after 3.0 s, when fired strayz;q-u o/e:j(b8 q2zpoz 3irvight up. What average thrust force does the rocket engine exert?

  Two astronauts, of masses 60 kg and 80 kgf qeog 7b4.1f+ o3xzli, are initially at rest in outer space. 47e.1 qz+fo3glibx foThey push each other apart. What is their separation after the lighter astronaut has moved 12 m?

  A 3.0-kg object moves to r17g wio smrw-y)au14 g(jz:9 cikk/ uph( gs7the 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 thggo h w)/crz:yr1g-iau7 w7uk 49im(s pj( 1ske collision?

  A 0.10-kg object with a a:+w+ i ni(mjnvelocity of 0.20 m/s in the +x direction makes a head-on elastic collisiin + +:a(mwinjon 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 fired into oc ;8.nuv c5pm yz2o9qa 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 blvm;o.5o uqp2 yc98nczock right after the collision?

  A proton, of mass m, at rest, is struak (81szytdrh)m 61b yck head-on by an alpha-particle (which consists of 2 protons and 2 nt1y8a kd(ym61 h s)brzeutrons) 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 +10w21a6i;12rviis u rja m/s collides head-on with a stationary ball of mass 100 g. The 6awi r1 2u sv1ra2ii;jcollision is elastic. What is the speed of each ball immediately after the collision?

A ball of mass 400 g moving toward the easi 3 zgq 7e/ho w:dz-jaoprp-*ek33h6lt with a speed of 3.70 m/s collides head-on with a 200 g ball sitting at p7oho-gh -e3likwrz z d/3a6p*3:jeq rest. 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 i 6zjtt 4a2f8c5.0 m/s. It collides head-on with a 3.0 kg mass at rest. If the collision is perfectly inelastic, what is the speed of the6ft4c8a2zj i t masses after the collision?

  A 2.0-kg mass moving to the east at a speed of 4f3ooe 9gv)b n3*r 8bwq hkgt2,.0 m/s collides head-on in a perfectly inelastic collision with a stationary 2.0-kg mass. How much kinetic energy is lost during thi2hfg trg,3b3n ob*8o eq)w9kvs collision?

  A car of mass m, traveling with a velocity v, strikes a parked st+:6ty 6 w2a(zwqxi 9ycsfikn*ation 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 *:i9(naw 6w ki fyty+zx s2q6cin this collision?

A 15-g bullet traveling 213 m/s in a ve 2vel,, (w9pawu ph +n,a.xkdyrtical direction buries itself in a 2.4-kg block of wood a rest directly above it.dew p9 wx,hu p,ak,yvlna. (+2 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 90.0 km/h east collides with a 3000-kg car trave ri 1ncz 6vaj*;nmas 88j7z9nkling at 60.0 km/h south. The two cars stick ts7n68am jnkr918an iz *jz; cvogether after the collision. (See Fig. 7-1.) What is the speed of the cars after collision?

  A 1500-kg car traveling at 90.0 k7/geru*.j i znm/h east collides with a 3000-kg car traveling at 60.0 km/h south. *.gjuern7 i/zThe 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 lev(b9l cm(hx;y vel frictionless surface. Object A moves east with a momentum of 24 kgm/s. Object B moveby l(c(xh;v 9ms 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 the Noaea)2v(iane9 jp; vk+rth with a velocity of 4.0 m/s. It ena )9e e2+a(i pvkjav;xplodes 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 origin, and a rm: 2 zefqzs )rx(o, *(cr)hba10.0-kg mass sits at x = + 21.0 m. Where is )z2mraz) br( rch:o(*qe,xfs the center of mass on the x-axis?

  The center of mass of a two-particle system is at the originl*t l)cgjr )ksh 1wnfke+h a 1z4ra,-z5vgt 59. One particle is located at (3.0 m, 0) and has a mass o*w e9r5 +sg)hfk-lar5l1tkt) ahz ,cv nz1gj4 f 2.0 kg. What is the location of the second mass of 3.0 kg?

  Three masses are positioned as followx,2 njcqms5igzpb6 s)8- . equs: 2.0 kg at (0, 0), 2.0 kg at (2.0, 0), and 4.0 kg at (2.0, 1.0). Determine the coordinates of the center oc bpx,qqz 6- 5se umingj.)2s8f mass.

  Three masses, 1.0 kg, 2.0 kg, anew e5lhe*+:dkzby l8ug:- j7 cvo,k-gd 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 c5e:*-gkb7w8l - ejy+odz,vkghc:ule enter of mass of the system?

  A 3.0-kg mass is positioned at (0, 8.0), anyu+:z+uxe jm0d 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 cey+ 0e+uxum:jznter 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 ib6)o79:c4 xqu ruzwh)xscc( a whole leg including the foot when the leg is stretched strao)xxrh w 97qbzic: (4cs)u6ucight out. Assume the person is 1.60 m tall.