What is the SI unit of mov98(q:br e tysmentum?

  When a cannon fires a cannonball, the cannon will r;5jdy 2hx:j jz9doph.ecoil backward because the

  A freight car moves along a frictionless level railroad track atmjnxzc-5s)dr-or4y+ tx **n 2yz*rgt constant speed. The car is open on top. A large load of coal is suddenly dumped into the car. What happens to the velocity of the carc y-+ yzj* rrd*xnn2m x* o5-4z)sttgr?

  A child falls sideways of+avemoa27 b/ nf a sled while sledding on frictionless ice. What happm o7/na2bave +ens to the velocity of the sled?

  A rubber ball and a lump of putty havkngh-k1 l z if7(8;8a kq-fbbpe equal 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 greater momentu;qpb7akbigzfk h8kn 1f-8l-(m change?

  A sailboat of mass m is moving with a momentum)9vvcp4g9t(xuh w o y9 p. How would you represent its kinetic energy in terms of these tp9voc 9)hv g9tx(yw4u wo quantities?

  If you pitch a baseball with twice the kinetic,il0i.w+ 9lycx jflgcws6/ /+5tjx bi energy you gave it in the previous pitch, the magnitu f+/lil5l6/0.gctiw 9w,xjjsix b+ cyde of its momentum is

State Newton's second law indy87vv5yh;,b1fzct c)l vuk5 terms of momentum.

State the law of conse7aj*guj4 3k aervation of momentum.

  The area under the curve on a Force versus time (F vs. t) gr7z9w 8m0mabdb e x)vy3aph represents

  Which of the following is an aym7p(f) zy 4 v a9yp2mxceo78jccurate statement?

  A small car meshes with a large truczc) v.mc/kp e ezquf-a(p/(ni,l 0n* rk in a head-on collision. Which of the following statements concerning the magnitude of the average collision force is correct?*p.v0 (een/u kf)l,r q znmia-c/z(p c

  Two equal mass balls (one red and the other blue) are dropped from the samm6mfnz: dvyhh38a89 ve height, 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?y9da f8 86 3:hhvvmznm

  A Ping-Pong ball moving east at a speed of 4 m/s, collides with a s.oiw , 3yof3ystationary bowling ball. The Ping-Pong ball bounces back to the west, and the f,yioo.wy s3 3bowling ball moves very slowly to the east. Which object experiences the greater magnitude impulse during the collision?

  Two objects collide and bouncexwvpqq)hu7nt 1 h- +p+ off each other. Linear momentum

  A 3.0-kg object moves to the right at 4.0 m/s. It collideb7s3 p4coh5 9kvlfu9 ys head-on with a 6.0-kg object moving to the left at 2.0 7ukvhos9l cb y53 9f4pm/s. Which statement is correct?

  A 100-kg football linebacker moving at 2.0 m/s tackles h1;7 eb(y, msextemoc )ead-on an 80-kg halfback ru ,ty(c1mxe7bem os ;)enning
3.1 m/s. Neglecting the effects due to digging in of cleats,

  In an elastic collision, if the momentum is conserved, then which of tj, 6nb. ;nql)cbq at(zhe following statements is true about kine n,qna)lz;bq.(bt jc 6tic energy?

  When is kinetic energy co9paaflb0)mc- nserved?

  In a game of pool, the white cue ball hpr /cfc-f1e li ot( (euln/k*8its the #5 ball and stops, while the #5 ball moves away with the same velocity as the eicl pk*(- 81forc/(fn/ ulte cue ball had originally. The type of collision is

  When a light beach ball rolling with a speed of 6.0 m/s collides with a heavy ex6u0aacm.m z u/*r 2p:kg2qyd vercise ball at r:y m0uva/.*a 2r6 u cgpz2dmqkest, the beach ball's speed after the collision will be, approximately,

  A golf ball traveling 3.0 m/s t uza ve. /q;4tt)sa*h 0vtm5yto the right collides in a head-on collision with a stationary bowling balvy q e0tz).;aha *m vt5tt/4usl 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 collides hea vob.*yc2 p,ogw3yb/g6m)1 dx za:qwzd-on elastically with an identical ball at rest. What is the 1a/36b m bco:,ogd gyqwpw.xz2*z)yvspeed of the initially stopped ball after the collision?

  A very heavy object moving with speesw)xmriw66)pjdo/ 7yc 1 zy6 ld 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 dowc6 i jlz)y 16wx)m6yrposwd7/ n. What is the speed of the light object after the collision?

  A very light object moving with speed v collides head-on with : 27 /avagozzxa very heavy object at rest, in a frictionless environment. The collision is almost perfectly elastic. Thea7x za o2g/z:v speed of the heavy object after the collision is

  A red ball with a velocity of +3.0 x.1ru( p0luq e-yd8bor-8 ib dm/s collides head-on with a yellow ball of equal mass moving with a velocity of -2.0 m/s. x0. 8 8yp1q(iudb-lub-derr oWhat is the velocity of the yellow ball after the collision?

  A very heavy object moving with v l h +/j )k7z lm3ga2tkevzah*d8:qlj;elocity v collides 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 down. What is the speed of the light object after thtzk *al j+jgq)v8; k:h mz/ae2l3ld7 he collision?

  In an inelastic collision, if the momentum is coe .:) -min3qbg 5iczgjw,w)d fnserved, then which of the following statements isgwf .-i nb:g) dqzce),wimj5 3 true about kinetic energy?

  Two objects collide and stick together. Kineti*e zxk24i e 3by:czmg6c energy

  A 3.0-kg object moves to the right at 4.0 m/s. v 7wmb361p *mf .wvoilIt collides in a perfectly inelastic collisf6m.p *vw3o w7lm1bi vion 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 large object and sticks(2a/ x lru nxgni2iao co(6-+v. Which object experiences the la uv6r l(aox-(xo22niciga/+nrger magnitude of momentum change?

  In a game of pool, the white cue ball hits t0 k ra)o2knn01lny* elhe #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 masses, M and m. Which of the fd;c4(nsuirn anj3i62 ollowing statements is false(s3n64j2 i;darniun c?

  Which of the following is a false m qz7y *jzn6g.statement?

  Tightrope walkers walk with a long flexible rod in or/f hqaayz:wg1y7:b (gder to

  A plane, flying horizontally, releases a bomb,w) +hysc )eajbgbf. +/ which explodes before hitting the ground. Neglecting air resistance, the center of masg+)c h)y/ae.wjbsf b+s of the bomb fragments, just after the explosion

  Two cars collide head-on on a level friction-free road. The collision was comp is: f)fjs+og/letely inelastic and both cars quickly came to rest during the collision. What is true about the velocity of this system's center of mass? gfjs):iof+s/

State Newton's second law for adqyfe. -ijf 2) system of particles.

  What is the momentum of a 2000-kg truck travel vi*6 23 /7llxrmtf fo1nyh5c 9/hcmneing at 35 m/s?

  A 1200-kg ferryboat is moving south at 20 m/s. What is the magnit1ip3t; *xym *ex8 9ewrf-4b5cahmfik ude of its momentumf*84 m3m9bpi*xe-a;e 5k1 xryhwtcf i?

  A ball of mass 0.10 kg is dropped from a height of 12 m. Its momenturt rdz;oq 34h.m when it std.3; 4hrq oztrrikes the ground is

  Two identical 1500-kg cars are moving perpendicular to each other. Ovq:xs;f sgpawj1l)1 9ne moves with a speed of 25 m/1jsv;g9pwqf):a 1xsl s due north and the other moves at 15 m/s due east. What is the total momentum of the system?

  A handball of mass 0.10 kg, traveli 6tr. mnzs97jlng horizontally at 30 m/s, strikes a wall and r 9rmzs6jnt7.lebounds at 24 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, isg haxwq(y0 -rsi-hsg) /y7v8a 10wzxb;f j)ro struck by a racket causing it to rebound in the oppoi-f rqsbhsrw j;g8x10 a0(-))z /hxagyo7ywvsite direction at a speed of 18 m/s. What is the change in momentum of the ball?

  A 50-kg pitching machine (excludingga, hleei1e1.1 t kow2 the baseball) is placed on a frozen pond. The machine fires a 0.40-kg baseball with a spee12 ge 1lkh.w ae,o1tied 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 stationto g)g,g,nzm pwa-73 qary when the tethepzw g3-g, tamnog,7q )r 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 headj( r; yppsqfev*-el3fuw- )p,-on a large object at rest. Thpejpeqv y;l,)pf ur- fsw-(3*e 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 onwt.*2sz o id9wv(h /ns ice at 4.0 m/s to greet your friend (40-kg mass), who is standing still, w(* w9vnt .os hd/z2iswith open arms. 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 ri5ql mfcpi).c vgxjd 0aj3 1y.;ght 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 total31pgyi.vjx) m j5a.fcld; q0c momentum after the collision?

  A 1000-kg car traveling j-r85;n jquxp at 25 m/s runs into the rear of a stopped car that has a mass of 1500 kg and they stick together. What is the speedxpr-85 junq j; of the cars after the collision?

  A railroad freight car, mass 15,000 kg, is allowed to coasro-w k r)*an(b, rv*cd riq)6it 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. What is the speed of the two cars a()rb*k q)c6*dravrrw,io in-fter coupling?

  A railroad car, of mass 200 kg, roll,8 htmpqtj2-d0 kl k un(7i q8tw;bdw2s with negligible friction on a horizontal track with a speed of 10 m/s. A 70-kg stunt ma;,qbwklq-mwid tth p(ku8n 7 8t02d2jn 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 of 0.80 m/s (with respect ts /wys4h*e9 x5h*g r nc;t2zcdo the log). With what speed does the log move, with respect to t/sge*t xys;crh4d9c *h5 z2wnhe shore?

  A 4.0-N force acts for 3.0 s on an object. The force suddenly increases8godt)) p-c8byq nzp ) to 15 N and a-t cp)z)g n8bd oq)y8pcts 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 on a 6.0-kg object. What is the objip sa um.6b.viup*2b* ect's change oi *. ippau2*6s.bvm buf velocity?

  A 2000-kg car, traveli 5y kcm3yt9:qpc227fzcxy *lq ng to the right at 30 m/s, collides with a brick wall and comes to rest in 0.20 s. What is the average fmtzxqy3c5 *f2 y2 cyp k9l:q7corce the car exerts on the wall?

  A 2.0-kg softball is pitched to you at 20 m/s. You hit t;hxbd zl0 .khi;wke8* he 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 t w8;k*bz lxhkd 0.ih;ehe magnitude of the average force the bat exerted?

  A 0.10-kg ball is drtg+9)p(qzu,fu nwm7p0 y ww*qh0ft)iopped onto a table 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 tn0yq9wfp gw0fiq(hu )zu+)pt7 wm*,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.g75 ojnnl 6wf70-gram bullets, with a muzzle velocity of 750 m/s, at the rate of 300 rounds per minute. What is the average flnf5jonw7 g67 orce exerted on the machine gun mount?

  A fire hose is turned on the door of a burni225w:jcc/qni s,q 0nf ui jjo6ng building in order to knock the door down. This requires a force of 1000 N. If the hose delwjc:jcu,2qosni6/qf 5 2i0njivers 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 120 kg per minute.53abnmr0kg+getzwko 6g ;-a* It falls 3.20 m to the ground. Assumin +ggr3a6wzam og-0ek; t*n5k bg the water doesn't splash up, what average force does it exert on the ground?

  A toy rocket, of mass 0.12 kg, achieves a velocity of 40 mri mlxvxi4 c*/(sc, i./s after 3.0 s, when fired straight up. What average thrust force does* c.ic4 i,( mxvxirls/ the rocket engine exert?

  Two astronauts, of masses 6vln e nm4m /;t lh eb:d/hiwsq8s:3*8p0 kg and 80 kg, are initially at rest in outer space. They push each other apart. What is their separation after the lighter aqn 3v: 8sns/ 4beh:lp/ m8t*wli;eh mdstronaut 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 py pt:x34pcb zda9phec)ul-0b 3 h12 byerfectly elastic collision with a 6.0-kg object :0-y2cpb) pcx4t zyb3dubpl1ae9 h3 h 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 27 p,muqdkmst0 hg93gty7 sz6the +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 object after collisiom3u hqgs ,psg76 kydm2 0t7zt9n?

  A 10.0-g bullet moving at 300 p3v. noy6 q*wim/s is fired into a 1.00-kg block at rest. The bullet emerges (th pviw qn6.3oy*e bullet does not get embedded in the block) with half of its original speed. What is the velocity of the block right after the collision?

  A proton, of mass m, at rest, -tmw.ujy o; gi85.etjis struck head-on by an alpha-particle (which consists of 2 protons and 2 neutrons) moving at speed v. If the c;t 5.8.emjg ytwjio-u ollision 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 hea9j+;x-) ravwy hq a e2*bn6eymp 0vuo3d-on with a stationary ball of mass 100 g. The collision is elastic. *ja)-ebp9x q;e2 3ay6mvhvy+0 wnur oWhat is the speed of each ball immediately after the collision?

A ball of mass 400 g moving toward the 0 0buh ,vk ;maj9an2t-ece7maeast with a speed of 3.70 m/s collides head-on with a 200 g bcue tm -0 ,eakaanjv ;7920mbhall sitting 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 4p3:f;( (f5vk9vsoa etbjs bkcollides head-on with a 3.0 kg mass at rest. If the collision is perfectly inelastic, what is4 :p(;ok93bebfat(k5f vjsvs the speed of the masses after the collision?

  A 2.0-kg mass moving to,pjdd9ndue k1cxt)a1ch*zd nb0 c+s;r c06w6 the east at a speed of 4.0 m/s collides head-on in a perc 0ac;r9*pu6 kddbn dxj0nzh,cc+61)1d w stefectly inelastic collision with a stationary 2.0-kg mass. How much kinetic energy is lost during this collision?

  A car of mass m, traveling with a velocity v, strikes a parked station w )tjk8i z;3b+bfqdwemkq(f67o 9g 4qkagon, who's mass is 2m. The bumpers lock together in this head-on inelastic collision. What fraction of the initial kinetic energy izkk ;(qokwg9 b) mdfqf tj3eiq674 +b8s lost in this collision?

A 15-g bullet traveling 213 m/s in a f1/+oh81 z vk zohb -.frrh;th /+rktej48efvvertical direction buries itself in a 2.4-kg block of wood a rest directly abovhze vr/kvo8+ oj fzbfreh1 h;hk1tt-/ f .84+re 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 collides with a 3000-kg car travelingwhtp.)qmx b16to fks+)j.z yn,; zb8x at 60.0 km/h south. The t6x8 wj+s qzzop1b;ntyx ..htf )),mkbwo cars stick together after the collision. (See Fig. 7-1.) What is the speed of the cars after collision?

  A 1500-kg car traveling at 90.0 km/h east collides with a 3 cduxy83 m8e+. : o-jgvsc9wze000-kg car traveling at 60.0 km/h south. The two cars stick together after t c9zvcmuy8d3o-sx8 : e+jge.whe collision. (See Fig. 7-1.) What is the direction of motion of the cars after collision?

  Two objects move on a level frictionless su4 f-ai rubxbizhnz*4f fwr.7setmv7,9 k;a 5* rface. 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 momentr 5 te axvm4zb;f4*r fw77*s,z h .ifiak9bun-um after the collision?

  A small bomb, of mass 10 kg, is moving toa ucygulmm:/yr89g/ x(os 0 7bward the North with a velocity of 4.0 m/s. It explodes into three fragments8ox ulmg/ s(y9 y0acbg7m /ur:: 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 10.0iah,1 rk1c v;nnqpu)8 -kg mass sits at x = + 21.0 m. Where is the1au18;i,c vnqkn) rhp center of mass on the x-axis?

  The center of mass of a two-particle system is at the orig0sxpp:l u* 28y5 eqkunin. One particle is located at (3.0 m, 0) and has a mass of 2.0 k:s25u*nk y pq0 leupx8g. What is the location of the second mass of 3.0 kg?

  Three masses are positioned as follows: 4ej ows 8j0p 3cm5*kr:yg5vyb 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 of ma bjjy58y:mp0ev4og53wcs rk*ss.

  Three masses, 1.0 kg, 2.0 kg, and 3.0 kg, are located at (0, 0), (1.0 m, 1.0 m).4;b1ulodr 2klh *0upwx d pd7, and (2.0 m, -2.0 m), respectively. What is thedowukp d x*plbu2;1 r 0dh.74l location of the center of mass of the system?

  A 3.0-kg mass is positioned at (0, 8.0phkk-z1 bb)*:*kubly 5 pmf k3), and a 1.0-kg mass is positioned at (12, 0). What are the coordinates of k 3: kk5yp* ub1 kz*pfm-l)bhba 4.0-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 po9 71jjyuozqg +sition of the CM of a whole leg including the foot when the leg is stretched straight out. A7gjoq1 +uj9yzssume the person is 1.60 m tall.