What is the SI unit of m8owtm b, su6zu )v/9bxevq h41omentum?

  When a cannon fires a cannonball, the canm +q d8x/8ic.w w-aimyosh,+q non will recoil backward because the

  A freight car moves along a frictionless l/ ;ygn 5mf(ka0x1r ihnevel railroad track at constant speed. The car is open on top. A large1fxi;/nr 05 kmha (gny 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 sll9pilmv0 (.oi edding on frictionless ice. What happensii. m l90l(vpo to the velocity of the sled?

  A rubber ball and a lump of putty have equal mass. They are thrown witcrym+q x5c4;i h 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 expe ;xqc4 i5mc+yrriences the greater momentum change?

  A sailboat of mass m is moving with a momentum p .0a7nbg 6eaqrrj j5z/mq vc:+. How would you represent its kinetic energy in terms of these two quanrqgcn+7e:z5 jjvq/.6 rmab0a tities?

  If you pitch a baseball with twice the kinetic energy you gave it in th.p8u rpx*kpus+t,09 unfr hq: e previous ppu: *xptfrh8p r0 9 u+,n.uksqitch, the magnitude of its momentum is

State Newton's second law in z-j b.-iscwk/terms of momentum.

State the law of conservation of momenbdpn8feepz0w a1u;9w 9l l,,5j qm.lstum.

  The area under the curve on a Force verlnesh( wfy1 07hra 4t*sus time (F vs. t) graph represents

  Which of the following is an accurate s+: lg7brpp.ow tatement?

  A small car meshes wi, 0cty k:c :qrb: f--91qbbelcpsa1jbth a large truck in a head-on collision. Which of the following statements concerning the magnir kqb cljbae9ys: -10p:cbq1fb, t- :ctude of the average collision force is correct?

  Two equal mass balls (one red and the other blue) are dropped froe xa8ne u9wcf9g-6dw6*qcnt 7 m the same height, and rebound off the floor. The red ball reboc *ew6wd-6nx 99u tg8fneac7qunds 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, colt(ts7j ,3k8dvq; miuxlides with a stationary bowling ball. The Ping-Pong ball bounces back to the west, and the bowling ball mstdqxj8ki3t7 (, mu;v oves very slowly to the east. Which object experiences the greater magnitude impulse during the collision?

  Two objects collide z wpu.g ng9h) q,cy5i/and bounce off each other. Linear momentum

  A 3.0-kg object moves to the right at 4.0 m/s. It collides head-on wzedjyw9+t4 a/r:h 7pc 6erjs,t18q nxw+ gx8zith a 6.0-kg object moving to the left at 2/nrwh +7 q:z4sjept8r +t1e aycgw9 8zjx,dx6.0 m/s. Which statement is correct?

  A 100-kg football linebacker moving at 2.0 m/s tackles x2hn,(a bhz:r head-on an 80-kg halfback(z nx,2bahrh : running
3.1 m/s. Neglecting the effects due to digging in of cleats,

  In an elastic collision, if the momentum is conserver(w e4-+xu nxxd, then which of the following statements is true about kinetic-+ (nuxx er4wx energy?

  When is kinetic energy consxgj- cq8 tifc4 mb5xgs13 c+f;hl( p,ierved?

  In a game of pool, the white cue ball hits the #5 ball and sty2,-qae gnfk29dy4 mp j pzlg20g :vc6ops, while the #5 ball moves away with th6z fgkn2 pv0py2j4d, mg9y-ql2ec:ag e same velocity as the cue ball had originally. The type of collision is

  When a light beach ball rolling with a speed of 6.0 m/s colli p4r;wu7 v4mkedes with a heavy exercise ball at rup 44v7w emrk;est, the beach ball's speed after the collision will be, approximately,

  A golf ball traveling 3.0 m/s to the right collides in a h3d w cb/rd 7tj,km(w,head-on collision with a stationarydkmr3/d b w w,tjh,7(c bowling ball in a friction-free environment. 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 colliderj856 ygm/0 xsjj:ugw s head-on elastically with an identical ball at rest. What is the speed of the initially stopped ball after the collisi ujwg:ryjg8x/mj60s 5on?

  A very heavy object moving with speed v colli8eqhkkxush.5 18 g4czdes head-on with a very light object at rue 8hqk1k . 8g5sxhzc4est. 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?

  A very light object moving with speed v collides head-on with a very h)p e 0bc/zg3wpeavy object at rest, in a frictionless environment. The collision i) pc3gp0/ ewbzs 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 yelx kzrbs)lsrz7lm2i.1*vu 68z low ball of equal mass moving with a velocity of -2.0 m/s. What is the velocity of the yellow ball after the6.ru zs x1)mszi7v *2 lbzkr8l collision?

  A very heavy object moving with vebhqs26 p9ix zzm-bmpin0 q8/of19q8flocity v collides head-on with a very light object moving with velocity -v. The coi p9 /bfq m6bh1-p9f8mszozqixq0 82n llision 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 c)y*80x3 i-wq5: c64yrocjor3mvqig ;td vct oonserved, then which of the following statements is true abo-m;3*8t toycj43ri0c6 o xwvi)qdqryco: 5vgut kinetic energy?

  Two objects collide and stick together. Kik l):0rz/eas40 kt,g0x wnowenetic energy

  A 3.0-kg object moves to the r;u2l mmjhxa87ight at 4.0 m/s. It collides in a perfectly inelastic collision with uj 82am 7lh;xma
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 experi dr4.tzeb6/d xe(:hh4d4bit jences the larger magnitude of :i4xtz6tbedh(/jd.rd4 h b 4 emomentum change?

  In a game of pool, the white cue ball hits the #9 ball and is deflected)1b7wbp41aw )kraic y 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. - ,oehlbjif;5 Which of the following statements is falsebfh;5j- ,oei l?

  Which of the following is a false c./v h:wl oe-bstatement?

  Tightrope walkers walk with a lo cja t0dz**wu7ng flexible rod in order to

  A plane, flying horizontally, releases a bomb, which explodes before hp +(jsit-4hjb itting the ground. Neglecting air resistance, the cen+jpt4shj bi- (ter of mass of the bomb fragments, just after the explosion

  Two cars collide head-on on a level friction-fre4lbk:z ln7/e3cr sc,p e road. The collision was completely inelastic and both cars quc e4lnc r ,7p:/z3blksickly came to rest during the collision. What is true about the velocity of this system's center of mass?

State Newton's second law for;im 8 2)7li4pd ifnjox a system of particles.

  What is the momentum ofi sr8 7sgvtu55gil1z + a 2000-kg truck traveling at 35 m/s?

  A 1200-kg ferryboat is moving south at 20 m/s. What is the magnitude of 0vnfhah/b* (u 6iaga5 its moma5gvh (iafbua6/hn0* entum?

  A ball of mass 0.10 kg is dropped from a height of 12 me53exsd- l p:c. Its momentum when it strik es ep5c3lxd-:es the ground is

  Two identical 1500-kg cars are movingke6l;r ybg.n tp7g f57 perpendicular to each other. One moves with a speed of 25 m/s due north and7yk;tg 7gr5.lbf6pne the other moves at 15 m/s due east. What is the total momentum of the system?

  A handball of mass 0.10 kg, travelingoia5 8xvog()t 6 yrh7g horizontally at 30 m/s, strikes a wall and rebounds at 27o( ayi gor )t8vhgx564 m/s. What is the change in the momentum of the ball?

  A 0.060-kg tennis ball, initially moving at a speed of 12 m/s, is str- r,imz4n,r8yjp e /k)zq liq/vs1ej- uck by a racket causing it to rebound in the opposite direction at a speed of 18 m/s. What is the change in momentum of th ,-er-nk)84 ,zmi/lqiz sq1v pr/yjeje ball?

  A 50-kg pitching mach)):aq. s w e7cnuzoa/x6rn1wnine (excluding the baseball) is placed on a frozen pond. The machine fires a 0.40-kg baseball with a speen sqaw1x :/)6e). nnwzauorc7d 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-wc*k7mh ;c0fndj ysc (1x o3e9galking outside the space 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 the capsule. 3oc jnm1*cy df(h ;ecg9k 0x7sAt 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 b 6 un04g+ap9uiv5 sinrest. The small object bounces straight back with a momentum of magnitude 4.0 kgm/s. W 0 n 6pg4b5ui+ainvus9hat 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- lx16h p4fh8epkg mass), who is standing still, with open armfhl41eh p8x p6s. As you collide, 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 levqxa4mu-ls *u63b-,u a ua/+twbb/zi del, straight road at a speed of 6.0 m/s. It collide +buu-mlaaub/*q6s,i3a-4bwt zu d/x s directly with a stopped motorcycle of mass 200 kg. What is the total momentum after the collision?

  A 1000-kg car traveling at 25 m/s run *t1)o2-ne 0kkborc fms into the rear of a stopped car that has a mass of 1500 kg and they stick ko2 0kf)1o*nbrcme- ttogether. What is the speed of the cars after the collision?

  A railroad freight car, mass 15,000 kg, is allowed to coast z,igj v(vkjc; jthntvh20,: t:+a f.zalong a level track at a speed of 2.0 m/s. Itnt:k jht zh0a,v;.,:ci (vjgjf+ztv2 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 wit+ p.dumc6 w6-s-v iscmj/0w*l:s .tt m5gobxih negligible friction on a horizontal track with a svs *:mo-c5 bi+ mw.piul6ds- j6t sg0.xwtc/mpeed of 10 m/s. 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 : w i)y+ sx) rbeglcris,8y 5*h(zq)zuthe rate of 0.80 m/s (with respect to the log). With what speed does the log move, with respect to r8,*:gziy+e)ixybs qc (z5 s)l r)u whthe shore?

  A 4.0-N force acts for 3.0 s on an object. The forcew s0t m3 5.f4uh2.rg*q/v gifo.axzpn suddenly increases to 15 N and acts for one more second. What impulse was imparf q 2avxpi .g m*./34o5gfwn0zrhust.ted by these forces to the object?

  A constant 9.0-N net force acts for 2.0 s on a 6.0-kg object. What 8 l8vzqa,,sc :tjz-c0cw- riyis the object's c0v yc8 iqw s,z-8r- lzac,t:cjhange of velocity?

  A 2000-kg car, traveling to the right at 30 m/s, collides with a brick wall and 1:0ipq;6cirbho )vl m28j b tocomes to rest in 0.20 s. Whq lj6o21 bocb0:prvh m;)iti 8at 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 bacuf tayev( *6,3d)m ge17swrovk along the same path, and at the same speed. If the bat was in contacy(d mwv ge ,u3t 1*rao76sevf)t 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 ball righ e ,:gy u4cv r(bfddg.wd0,x8at before and right after hitting the table top are 5.0e 0g4(dfd,b.8 c :,rvugwdaxy 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 ,t, j4eu;:nzvwu 4 elkendy,*, fires 50.0-gram bullets, with a muzzle velocity of 750 m/s, at the rate of 300 rounds per minute. What is the average force exerted on th: nde*ut lyv,4ewznk,;e 4u ,je machine gun mount?

  A fire hose is turned on the door of a burning building inj p/)pb-sfd-cqn3gb; order to knock the door down. This requires a force of 1000 N.;s/g fppndqjb-)-3 cb 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 horizsv7pki :2ydw5rg2 w 9 bbzqb(:ontal drainpipe at the rate of 120 kg per minute. It falls 3.20 m to the ground. Assuming the water doesn't splash up, 5w qv:ps9k:bb2 rb7dig2ywz ( what average force does it exert on the ground?

  A toy rocket, of mass 0.12ezsg0xl 1h f om69r-lg-ch/khi75 .ne kg, achieves a velocity of 40 m/s after 3.0 s, when fired straight up. Whzlhrh 0-i5e9/lxm7koecng16fh . - gsat average thrust force does the rocket engine exert?

  Two astronauts, of masses 60 kg and 80p bmr.xr0w0 t;sk;c m6 kg, are initially at rest in outer space. They push each other apart. What is their separation after the lighter astronau0;tkr0m xcm bw6rp. s;t has moved 12 m?

  A 3.0-kg object moves to the rigmvx -sdxn2* c6ht 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 1.0vcx2ndm-* 6 xs m/s. What is the total kinetic energy after the collision?

  A 0.10-kg object with a velocity of 0.20 7xx/m;yl uu2, *wyquh:o,.z3 ugny qgm/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 y/m 7uo. uqy3z,,wg lg;u2u*h x:nqyxthe 0.10-kg object after collision?

  A 10.0-g bullet moving at 300 m/s is fired into 6m b y ra(:bhwe9fmtue-z0.q)m/a tp.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 block right aft.b9mm6ty) aa mpb/ whte q.rz -ue:f0(er the collision?

  A proton, of mass m, at rec-z +uxy bi; o,cuf,5vst, is struck head-on by an alpha-particle (which consists of 2 protons;uxvc,, o5byiuf zc +- 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 witypcg ql( 10h o-3t;l-2e0 ena-jokljvh a stationary ball of mass 100 g. The collision is elastic. What is the speed of g3ve( e2 - jjlnl-q-ayho; lto0ck0p1 each ball immediately after the collision?

A ball of mass 400 g moving tow s 107rdq.jvlqard the east with a speed of 3.70 m/s collides head-on with a 200 g ball sitdj.170lqvq rsting 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 speed of 5.0 m/s. It collides head-on with a 3.s6 t3s63gt) tl rc9fmq0 kg mass at rest. If the collision is perfectly inelastic, what is the speed of mt3sq s9r g63fl ttc6)the masses after the collision?

  A 2.0-kg mass moving mj 0lu);jejb7e/k ,phto 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 kinethmu /ek) ; 07bjlp,ejjic energy is lost during this collision?

  A car of mass m, traveling with a velocity v, p/ (ig:tht z+bstrikes a parked station wagon, who's mass is 2m. The bumpers lock together in this head-on inelastic collision. What fraction ofpb i+gthz (:/t the initial kinetic energy is lost in this collision?

A 15-g bullet traveling 213 m/s in a verfo: m8( bm+7ean7prw0w tmd +jtical direction buries itself in a 2.4-kg block of wood a rest directly above it. As a result, the bullet/block combination moves v:wmw+de nrm+ 7(p ao fm87jb0tertically 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 wi2r6bo* 9bnti:wh dh+tfd3omab,1 -u uth 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 d*+whrbu-ob dah6b, ot m2u13:fit9n the cars after collision?

  A 1500-kg car traveling at 90.0 k/nu tq pzf 8jbjqwlj/w.6y2;.m/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 direc/.2w/wjz qp ;qutyjbjf 8n6l .tion of motion of the cars after collision?

  Two objects move on a/lfsuji/8 7gnl1q*t r level frictionless surface. Object A moves east with a momentum of 24 kgm/s. Object B moves8st/*1 q/ nfrjl7ugli 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 a velocit7h6 n3v-mhnkg y of 4.0 m/s. It explodes into three fragments: a 5.0-kg fragment moving westm6 nh-g7v3nh k 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 10.0-kg mass sits 21tz fszfm h;4y/b4st at x = + 21.0 m. Whery;h tmszbs4zf 1 4f2/te is the center of mass on the x-axis?

  The center of mass of a two-z9vfz (d3 kux6jel)w1u n)say- 9sg6dparticle system is at the origin. One particle is located at (3.0 m, 0) and has a asn3uy xvw( )jue1dzks6z)d9 gf6-9l mass of 2.0 kg. What is the location of the second mass of 3.0 kg?

  Three masses are positioned as follows: a5ce/aaj:mj, 2.0 kg at (0, 0), 2.0 kg at (2.0, 0), and 4.0 kg at (2.0, 1.0). Determine thace ajj5/ma, :e coordinates of the center of mass.

  Three masses, 1.0 kg, 2.0 kg, and 3.0 kg,stkin;cd4yde u2+ oi2l)c0:u are located at (0, 0), (1.0 m, 1.0 m), and (u0; e:cuk nl2c+)s idyo2itd42.0 m, -2.0 m), respectively. What is the location of the center of mass of the system?

  A 3.0-kg mass is positioned at (0, 8. ddvf7lojesh6y .h7r(2b6 ;jw 0), and a 1.0-kg mass is positioned at (12, 0). What are the coordinates of a 4.jdl6s6b(2 fw 7.;ryjhovde 7h0-kg mass 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 t e k(/ae/i2(ifkt4nn ehe foot when the leg is stretched straight out. Assume kk2 ae(/nee/4tfi i(nthe person is 1.60 m tall.