What is the SI unit of mom14u qumcv k 44skv4me)entum?

  When a cannon fires a cannonball, the canh9 e.8wp gk:nnnon will recoil backward because the

  A freight car moves along a frictionless level railroad trackt ag qu24lwp8u9; g*ln at constant speed. The car is open on top. A large load of coal is suddenly dumped into the car. What happens to the veloci tgq9naguw 82p;*u4llty of the car?

  A child falls sidewakcgwn* **cw l+ys off a sled while sledding on frictionless ice. What happens to the veloci +*wgc ncl*w*kty of the sled?

  A rubber ball and a lump of putty have equal mass. q21 i vmamkb. ./4.tx9 xg(lnzwhzr9n 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. Wkmhn9xnr4ix2 q(mbtz1z/w.ga 9.v. lhich objects experiences the greater momentum change?

  A sailboat of mass m is moving with a momentum p. How would you representm9g dx e9;deiyu u41*a its kinetic energy in terms of thesee;gd ae*xu9m91y4dui two quantities?

  If you pitch a baseball with twice the kinetic energy w/t a,a m,oa(hq1- w4bmbrs/ryou gave it in the previous pitch, the magnitude of its amwmotrab r(41hsb,q-/,a w/momentum is

State Newton's second law in termskuus 52 i1ime8tldzpqp7bo+7, g.wu 1 of momentum.

State the law of conserhf* .lla+ 0eprwxwa. whf7*r;vation of momentum.

  The area under the curve on a Force versus time (F vs. t) gratb hfp.e/ w)48apaf*)jxd; gtph represents

  Which of the following is an accurhy6 lf nqq:xq.6; pz,mlgu,i3ate statement?

  A small car meshes witm,lbs1wkws(e4 w v*f2h a large truck in a head-on collision. Which of the followin1wwbse lv2w4fmk *(,sg statements concerning the magnitude of the average collision force is correct?

  Two equal mass balls (one red and the other pt5zizjw vfrsanu-1540kd ) 5blue) are dropped from the same heigh5 1i0zu nvza-jkfs55)dtrw 4p t, 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 floor?

  A Ping-Pong ball moving east at a speed of 4 m/s, collides with a stationary bowdxt6b 3y1n -rl67etdflg *4ls *:umkp ling ball. The Ping-Po7 b4kl:tgemxd1t6y l*f* p6n3d-s lrung 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 collision?

  Two objects collide andup2 fhcf;nm23f2:r u d bounce off each other. Linear momentum

  A 3.0-kg object moves to the right at 4.0 m/s. ,i(m81zjo hax It collides head-on with a 6.0-kg object moving to the left at 2 x8 (hji1,aomz.0 m/s. Which statement is correct?

  A 100-kg football linebacker moving at 2.0d/x/zgb+ 7c:ja sdx .i m/s tackles head-on an 80-kg halfback 7jbx/di / zgs .c+ad:xrunning
3.1 m/s. Neglecting the effects due to digging in of cleats,

  In an elastic collision, if the momentu q4xn-zs9lw 5)p c3gymm is conserved, then which of the following statements is true about ki q)z9yc4 l3p-xwnmg5s netic energy?

  When is kinetic energy h b0wnpqt*qzo/b+n;**pemq:23ljwu conserved?

  In a game of pool, the white cue ball hits d ,m mp) j b;7 a1i;;keyabxk;8)qifa*xaag3hthe #5 ball and stops, while the #5 ball moves away with the same velocity ak;));jqgebi3fmy x;dhaxaa*1 bak;,i 7 p a8m s the cue ball had originally. The type of collision is

  When a light beach ball rolling with a speed of .nnr acpaaj) bj8 ;zbc1;/f;h6.0 m/s collides with a heavy exercise ball at rest, t1z.j)cac; n;h/ ; rafb pban8jhe beach ball's speed after the collision will be, approximately,

  A golf ball traveling 3.0 m/s to the right collides in a head/uukoo.8 w/f.w mq vb5 0efwz--on collision with a stationary bowling ball in a friction-free environment. If the collision is almosuwq8m -ebwu/ oo.w0 fv/ .z5kft 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 idgyvz79g3ug 6 qentical ball at rest. What is the speed of the initially stopped ball after the collyq7g9v zg6g 3uision?

  A very heavy object moving with spe3/9da 6q u4uk b2u s*qin 26tv)xbrmcned 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 light 962svur )q n/m 6b2an4duct b3k q*xiuobject after the collision?

  A very light object moving with speed v collides head-on with a very heavy obj yjrlmw) 0,(nyect at rest, in a frictionless environment. The collir wjm yy)nl,(0sion is almost perfectly elastic. The speed of the heavy object after the collision is

  A red ball with a velocity of +3.0 m/s collides head-on with a yellow ball of eqkj5y;xey m t9(me6 z(vual mass moving with a velocity of -2.0 m/kt v96yx 5e(ye mzjm;(s. What is the velocity of the yellow ball after the collision?

  A very heavy object movginl 79u8v z/ging with velocity v collides head-on with a very light object moving with velocity -v. The collision is elastic, and thez7 v9g 8igu/nlre is no friction. The heavy object barely slows down. What is the speed of the light object after the collision?

  In an inelastic collision,kcg , koh0sq3+ if the momentum is conserved, then which of the following+cgk3h0,osq k statements is true about kinetic energy?

  Two objects collide and stick togefyses9 l2 1c5xg.+jy lther. Kinetic energy

  A 3.0-kg object moves to the right at 4.0 m/s. It collides in a perfectlg 6ta9:q f)inoy inelastic collision ftog q:ia6)9 nwith 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 aojf8rc*3ss52vjx fu8nd sticks. Which object experiences the larger magni883*v5 cj rojf2ssxuf tude of momentum change?

  In a game of pool, tn l,dc:dj1js2d /f:g che white cue ball hits 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 mass;)mt:pj)hgr o es, M and m. Which of the following statements is false?r:m;o)pghjt )

  Which of the following is a uhewaxup.t5+x t12 (n false statement?

  Tightrope walkers walk wia j sj4-9(wn(8g3ilr gykdd7c th a long flexible rod in order to

  A plane, flying horizontally, relez r) rwhz+oh49ases a bomb, which explodes before hitting the ground. Neglecting air resistance, the center of mass of the bomb fragmentz+z rwh4r)oh9 s, just after the explosion

  Two cars collide head-on on a level friction-free road. The collision wathpz,gqm +p a(*i2p d7 ea*-hns completely inelastic and both cars quickly came to pa itmh*p-7,n ( q+2edhgapz* rest during the collision. What is true about the velocity of this system's center of mass?

State Newton's second 4 swxd,o1)um-rvnhj 0 ec55 m 0ossau1law for a system of particles.

  What is the momentum of a(d9e+cie(zj5 ;l/grc d) bsqb 2000-kg truck traveling at 35 m/s?

  A 1200-kg ferryboat is moving south 4 qn pbf8i pps-kcv9kpj;61s *at 20 m/s. What is the magnitude of its momentp cpp-468;kisk9b1*p njsfqv um?

  A ball of mass 0.10 kg is dropped from rqftrc,x ggg3 k2tdxsg7 1:*3a height of 12 m. Its momentum when it strkrr cx t:x3*1tg2 3,dfgs 7gqgikes the ground is

  Two identical 1500-kg cars are md+/un:n6o la ioving perpendicular to each other. One moves with a speed of 25 m/s due north i /nnd6l :+aouand 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 horizontalluurk .h 9s.ys yku)73 *thd.rmy at 30 m/s, strikes a wall and rebounds u3hyt7hsk.mu)*sdru ..k y9rat 24 m/s. What is the change in the momentum of the ball?

  A 0.060-kg tennis ball, i t0:zj9vl 1mo lkoh; kss ti,)ds24y,dnitially moving at a speed of 12 m/s, is struck by a racket causing it to rebound in the opdy ll)hm4,,zk kj0;o2s itvd:1o 9tssposite 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 a frozenuid zp/s083zu pond. The machine fires azu0iz8p3 / dus 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.)

  A 70-kg astronaut is space-walking outside the spacia0z 1bu2cic*vz. ) ofe capsule and is stationary 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 10 .zc zbu2iocvafi*)the capsule. At what speed does the astronaut move toward the capsule?

  A small object with momentum 5.0 kgm/s approaches head-ong hhd,fa/2nr bs-)t x) a large object at rest. The small object bounces straight back with a momentum of magnitude 4.0 kgm/s. What is the magnitude of the latg hfns ad)2h/xrb-) ,rge object's momentum change?

  You (50-kg mass) skate on ic1b;q5 vhcj3we e at 4.0 m/s to greet your friend (40-kg mass), who is standing still, with open arms. As you collidhe ;51c3bj qwve, while holding each other, with what speed do you both move off together?

  A car of mass 1000 kg 6hxl0lwel: 9ymoves to the right along a level, straight 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 the collxlw6 y0h :le9lision?

  A 1000-kg car traveling at 25 m/s runs into the rear of a stopped ck3z.4 jc xf.;oeyvxg7 ar that has a mass of 1500 kg and they stick y.f74zxjox;c3.gev ktogether. What is the speed of the cars after the collision?

  A railroad freight cajhou6:s )rgnt2n m5d:r, mass 15,000 kg, is allowed to coast along a level track at a speed of 2.0 m/5t uhg:6jmdrs):2nnos. It collides 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 200 kg, rolls with negligi: de)mi/ i:ntxble friction on a horizontal track with a speed of 10 m/s. A 70-kg stunt man drops straig::d tximn/i)e ht 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 of 0.80 m/s (with respect to thdd koz5pq(0:y e log). With what speed does the log move, with respect to the s50(y q:d odzpkhore?

  A 4.0-N force acts for 3.0 s on an object7 ft*sjjomq fob4c +:v81/okt. The force suddenly increases to 15 N /4o btvftokjjs87m+*1c:f qo and acts for one more second. What impulse was imparted by these forces to the object?

  A constant 9.0-N net force acts for 2.0 s 1vawaa4p6c9az o/ lb. ebp k**on a 6.0-kg object. What is the objecl6/4 v *9bz1aoab. cpak*aepw t's change of velocity?

  A 2000-kg car, traveling to the right at 30 m/s, collides with mouvo o6 tq4zh1 he+cf1* /yt9a brick wall and comes to rest in 0.20 s. What eft 1cyh/1uqzhm4v*oto 96+o is the average force the car exerts on the wall?

  A 2.0-kg softball is*3sv ss0s(ohc pitched to you at 20 m/s. You hit the ball back along the same path c*0vs o3s(ssh, 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 exerted?

  A 0.10-kg ball is dropped onto a table top. The speeds of the 41jps: ndycj. 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 th1jjcnd p.s: y4e average force exerted on the ball by the table top?

  A machine gun, of mass 35.0 kg, fires 5qk7740gds zl ui8x t)g:oja ;h0.0-gram bullets, with a muzzle velocity of 750 m/s, at the g4iquh:s k 7;x0j8z) td ga7olrate 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 arv.0pjo7:eo f burning building in order to knock the 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.p:7j 0ro fevo, assuming the water doesn't bounce back?

  Water runs out of a horizontal drainpipe at the ratea+8 j :lajm7up 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 grouap 7mu:la+j8jnd?

  A toy rocket, of mass 0.ttxdh e1tw g1(3ir0+;,l+vals ;ylsg12 kg, achieves a velocity of 40 m/s after 3.0 s, when fired straight up. What average thrust force does the rocket engl;ie+3y g,(t;l0hr1 dwvs lxt+ g 1atsine exert?

  Two astronauts, of masses 60 kg and 80 kg, are initially at rest in outer space( km(7r/y bwkt38by. u 7wcafi. They push each other apart. What is their separation after the lighter astronaut has moved 1.c mfya78uk iw/b(7k rwty (b32 m?

  A 3.0-kg object moves to the right ryz /vg7h,xvx;o pa4 ni-,z7rwith 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 the colli rxg, on7ivy4, -/p7ah;zrzxv sion?

  A 0.10-kg object with a velocity of 0.20 m/s in the +x direction makes a h 2xp5qlo 5)wn+ t;-b rlxwl:k7vf9hniead-on elastic collision with a 0.15 kg object initially at rest. Whatktxnr 9-lqnwl 5)plofb ;:wvi+5 7x2h 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 a 1.00-kg bl728lqr 1;qj vx8q xmtaock at rest. The bullet emerges (the bullet does not get embedded in the block) with half of its original speed. What is2xr qmqt8xjv1;8la 7q the velocity of the block right after the collision?

  A proton, of mass m, at rest, is struck head e0iy d*g/;b0cdzqsh(a-st, s-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 hs0eg/*zdqa;di,yt-schs 0 ( b ave after the collision? (Assume the neutron's mass equals the proton's mass.)

  A 50-gram ball moving +10 m/s collides head-on wit/x4 gfmhm. )0zgljj7c0ovs.3mnsdh 7 h a stationary ball of mass 100 g. The collision is elastic. What is the speed of efj cmog zg0v d3ml.7m4/.sxshh07)njach ball immediately after the collision?

A ball of mass 400 g moving toward the east with a speed of 3.7d sg70bjg7p lh;y4cfs- s: *wa0 m/s collides head-on with a 200 g ball sitting4 lbp hg7sa 7yw-cd;s gj0fs*: at 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 a9eic t517jtv )kcpn/ speed 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 speed of t7cc5i tv )tke1pj/a9 nhe masses after the collision?

  A 2.0-kg mass moving to the east at a speedtoj/qww,ecl:s3 1ej7 of 4.0 m/s collides head-on in a perfectly inelastic collision with a stationary 2.0-kg mass. Hoe t3 sw :ew7/l,qj1cjow much kinetic energy is lost during this collision?

  A car of mass m, traveling with a vmf/(r. -pjh(vh hs 8dqelocity v, strikes 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 enevrq mh dhp-(/8h s.(jfrgy is lost in this collision?

A 15-g bullet traveling 213 m/s in a vertical direction buries itself in a 2c ,;ch79xy1zcz a8z4n93z tq h1czclt.4-kg block of wooqznt c tcc za,h1x9 4z73;l981 hcczzyd a rest directly above it. 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 collides7b/v-b)xhn8 i)fxx pe with a 3000-kg car traveling at 60.0 km/h south. The two cars stick together after the collision. (See Fig. /bv hb78)f)eixxxnp- 7-1.) What is the speed of the cars after collision?

  A 1500-kg car traveling at 90.0 km/h east co)hvy (prz/(7 5als tjmllides 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 thy/ (vz ()jmart7ls5 phe direction of motion of the cars after collision?

  Two objects move on a level frictiqfu.jdyl di)ps jic+9jrb.a+u973 ;9 fra 9eionless surface. Object A moves east with a momentum of 24 kgm/s. Objectrdyr 9b ).;ap+l3ifsu ufjic9a dj q97j9.ie+ B moves 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 North with mg 8 s*.l3kjcfn*k k--8jtgmu 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 with a speed of 10 m/s; and a third fragment with a mass of 1.0 kg. What is thet-nk3jmckf*.-j 8g*uslk 8gm velocity of the third fragment? (Neglect air friction.)

  A 4.00-kg mass sits at the origin,59 tda.tad2.y d,w bdd and a 10.0-kg mass sits at x = + 21.0 m. Where is,d.d5ta b w2tdy9da. d the center of mass on the x-axis?

  The center of mass of a two-particle syst69cklgkj n-rc+0770hn uwiq) klow6c em is at the origin. One particle is located at (3.0 m, 0) and has a mass of 2.0 kg. What is the location of the se qlow u+6n wh)7kj0cgcil0n-r 7kck96cond mass of 3.0 kg?

  Three masses are positioned a* pz(espvo s 60rdb,c)s follows: 2.0 kg at (0, 0), 2.0 kg at (2.0, 0), and 4.0 kg at (2.0, 1cb ,pd)(s pezs vr06o*.0). Determine the coordinates of the center of mass.

  Three masses, 1.0 kg, 2.0 kg, and 3.0 kg, are located ats8s c8j45bu5lpv o7no (0, 0), (1.0 m, 1.0 m), and (2.0 m, -sl4 bnsjc o57o58v8u p2.0 m), respectively. What is the location of the center of mass of the system?

  A 3.0-kg mass is positioned at (0, 8.0), wj;l3g vzi syubz/u(:ek o8 ;8and a 1.0-kg mass is positioned at (12, 0). What are the coordinates of a 4.0-kg mbu w voe8s/u;3 :g (jyzl;ik8zass which will result 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 whole leg including thejbubp;: *j7ee foot when the leg is stretched straight out. Assume the person isjb*e 7:p ;ejbu 1.60 m tall.