What is the SI unit of momex:pa2s:k:nd jntum?

  When a cannon fires a cannonbal4c4zxp l+ 3wc/,wxmuml, the cannon will recoil backward because the

  A freight car moves along 7-zqzq8dba*qtqxp ,*7 kjd2w u ckyet5 :x+ /ia frictionless level railroad track at constant speed. The car is open on top. A large load of coal is suddenly dumped into the car. What hap,zewuzxjq2/bd q t q kad5-y+8k p*itc:7*x q7pens to the velocity of the car?

  A child falls sideways off a sled while sledding on frictionl:sc, vxgipa,h -/2cx 7zk)aacw(wf l. ess ice. What happe(. 7x 2, wlcghwzaaf)xcv:p,-sa /ci kns to the velocity of the sled?

  A rubber ball and a lump of putty have equa ytycf7 i9/s 3sqw9/cf4r.hfsl mass. They are thrown with equal speed against a wall. The ball bounces back with nearly th/t . h/fc3swsfyi9y 97rc4sqfe same speed with which it hit. The putty sticks to the wall. Which objects experiences the greater momentum change?

  A sailboat of mass m is moving with a momentum p. How would you rep6qppy 4o-kumdf19olexlag )+ r12gt .resent its kinetic energy in terms of these two quantitiel gk96m-puayp4 foxgr)+ldo.e 21 1q ts?

  If you pitch a baseball withq 7ay(oy i6s8f twice the kinetic energy you gave it in the previous pitch, the magnitude of its mom7yqs8oyi(f 6 aentum is

State Newton's second law in terms of momentujv)) * fzdhmrr)u80ec p0 jj aye4,z2pm.

State the law of conservation of mowvl fcg ba 55h+zge0iq5y /t 4jf lou/+4c4hf8mentum.

  The area under the curve on a Force versus time (w9s2bw(yj c+e4u.+ f3idwpk oF vs. t) graph represents

  Which of the following is an acc0zr bw5lqz5v63 lkt:nm yf(l)urate statement?

  A small car meshes with a large t(+ x8tyku 0o 4(fj: aq(swiiduruck in a head-on collision. Which of the following statements concerning the magnitude of the average collisionajyuf4i:w8ut(do0 +k (q x si( force is correct?

  Two equal mass balls (one red and 48vctlfu78dp 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 impulse 87dc 4 vu8ftlpduring its collision with the floor?

  A Ping-Pong ball moving east at a spe /.w7yawwkg. dnmm86sed of 4 m/s, collides with a stationary bowling ball. The Ping-Pong ball bounces bacy ww.g7m/ ak.mn wds86k 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 and bounce off each other. Linezne.(ilndquji61*wn r t. 4w/ ar momentum

  A 3.0-kg object moves to the right at 4.0 m/s. It col 6ic y tqom3y7+hhw7r+lides head-on with a 6.0-kg object moving to the left at 2.0 m/s. Which statt7hqy3wio mr7+h6 yc +ement is correct?

  A 100-kg football linebacker moving at 2.0 m/s tackles head-on an 80ul: 7oh+nqij)d7jqj/ algdb0. iw7x +-kg halfback ru+djjd :li7xuaqo gb+7.jql)i70h n/ wnning
3.1 m/s. Neglecting the effects due to digging in of cleats,

  In an elastic collision, if the momentum is conserved, then whi4om x859ffvh de zj)z1bcvat81*qi4cch of the following statements is mo1*i95e)8v1d af 4bj qz hcxt4zv8fctrue about kinetic energy?

  When is kinetic energy conservcy5b enx; z()auov 8(qed?

  In a game of pool, the white cue ball hits the #5 ball and stops, while the pt4xr74c5 sx4u8l 9z ftsnqh-lc ,:qf#5 ball moves away with the same velocity as the cue ballr l47 -nlqtff tx85, qsh:cpz9s xc44u had originally. The type of collision is

  When a light beach ball rolling with a speed of 6.0 m/s collides with 5 4+sxo o*j9io ec /mew04difra heavy exercise ball at rest, the beach ball+f ii 5cx4eow 4 mr9e0jsdo/*o's speed after the collision will be, approximately,

  A golf ball traveling 3.0 m/s to the right collides in a head-on colli1* m8;. nziinm lshmd9z9o zm5sion with a stationary bowling ball in a friction-free environment. If the collisionzn8nz9smlmi1 *zd9h5 omm i.; 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 with an ide obohzv:9p-k 96n w/wcntical ball at rest. What is the speed of the initially stopped ball aw oon96w:hp cz-k v9/bfter the collision?

  A very heavy object moving with speed v collides head-on with a very lightyab )whx(fztug80q :+ 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 objectq0:z)wyfhugb a (+x8t after the collision?

  A very light object moving with speed v collides head-on with a very heelmh. u .gc4*ci0z l/qavy object at rest, in a frictionless environment. The collision is almost perfectly elastic. The speed of the heavy object aftuiqhe0.4 glcc*m zl./ er the collision is

  A red ball with a velocity of +3.0 m/s collides head-on with a yellow ballw btps, qpk* 4h8l4wnn/ w5h(l of equal mass moving with a velocity of -2.0 m/s. What is the velocw4s nhtl n*4p(b pl,w qw/58hkity of the yellow ball after the collision?

  A very heavy object moving with velocity v collides4 7m-v+mmqwz2gp sg.z 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 -qw2 zm.zm4g+g p7vsmis the speed of the light object after the collision?

  In an inelastic collision, if the momentum is conserved, then whkc zl)pb+-nl/r.kx *aich of the following statements is true about kinetax k/)r l.k-nzlb*pc+ ic energy?

  Two objects collide and stick together. Kinetieoug cf58ywcj1d3c(0 c energy

  A 3.0-kg object moves to the right at 4enwz)7ol2g6 z.0 m/s. It collides in a perfectly inelastic colliszewl6 2og z7n)ion 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 collin* ce8g2jd w5h3i,t aqdes with a large object and sticks. Which object experiences the larger ma5 i gjq,hdc23e8a*tnwgnitude of momentum change?

  In a game of pool, the white cue ball hits the #9 b5(-cpnvwi8ds all 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 fn7a2.m4rei:-lk tf x(u,o h jtollowing statements is false an7mk:o furi( hx2lj4.tte,-?

  Which of the following is a false st *bcf g+)ima0lma dof4zn.z 8:ks ).nxatement?

  Tightrope walkers walk with a long flexible rodou5r(v yb8ks* in order to

  A plane, flying horizont 8imn;c ey,w;jally, releases a bomb, which explodes before hitting the ground. Neglecting air resistance, the;;8cjm,ey wni center of mass of the bomb fragments, just after the explosion

  Two cars collide head-on on a level friction-free road. The collision was comple; 1vdr3xz8w3e zy 0lrvtely inelastic and both cars quickly cye8dr;1v v zw3r03 xlzame to rest during the collision. What is true about the velocity of this system's center of mass?

State Newton's second lbbtzc y+ 0)ol3aw for a system of particles.

  What is the momentum of a 2000-kg truck travelingq5abx bgm;hb- gt1 dvw +):y-l at 35 m/s?

  A 1200-kg ferryboat is mov) p cve;ewhic3uno 853ing south at 20 m/s. What is the magnitude of its momen o3ie5u vc3ecwn p;8h)tum?

  A ball of mass 0.10 kg is dropped from a height of 12 m. Its moment7 d(q+r2 +n()ospzko4nmkk l mum when it strikes the grsmo+(7+kq l )zk24( opmknndr ound is

  Two identical 1500-kg c5bh* df acnch)8.mbg.ars are moving perpendicular to each other. One moves with a speed of 25 m/s due north and the other moves at fmacb 8hg*nh.)b dc5. 15 m/s due east. What is the total momentum of the system?

  A handball of mass 0.10 kg, traveling horizontally at 30 m/s, strikes a wall anf e:,)fm)s+uihge9z id rebeei )ifg)+fzus:h9, mounds 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 3st:cw+ 4fntf 12 m/s, is struck by a racket causing wfn4s:c +t3 tfit to rebound in the opposite direction at a speed of 18 m/s. What is the change in momentum of the ball?

  A 50-kg pitching macharh m 0qgxc812ine (excluding the baseball) is placed 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 r0qxh ga8cm12pitching machine? (Assume negligible friction.)

  A 70-kg astronaut is space-walking outside the space capsule and is sta 3fge(4+; dq dbtbk1rationary when the tether line breaks. As a means of returning to the capsule he throws his 2.0-kg space hb k(a3q d;e4 +1dbgrftammer 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 head-on a large ob4cahpwj9:r2 k ject at rest. The small object bounces straight back with a momentum of magnitude 4.0 kgm2kpa9wh 4cjr:/s. What is the magnitude of the large object's momentum change?

  You (50-kg mass) skate -abpcdn4kr8t 68ctp 4 on ice at 4.0 m/s to greet your friend (40-kg mass), who is standing still, with open arms. As you collide, while holdin88 rk6-p4 pb4c adtctng each other, with what speed do you both move off together?

  A car of mass 1000 kg moves to the right along a level, straight road at a ssnj+h hq5 5r0epeed of 6.0 m/s. It collides directly with a stopped motorcycle of mr hnh+j5eqs05ass 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 ste wpe2tvlfd0o iy;u.8,b zg 8arh5+y+ opped car that has a mass of 1500 kg and they stick together. What is the speed of the cars ai+88wv b.yty eho lz;5eu+ g adr20fp,fter the collision?

  A railroad freight car, mass 15,000 kg, is allowed to coast along a level tra0t /nqoj8n)e 2ub9 tjdts* /fock at a speed of 2.0 m/s. It collides and couples witn8) b/tj2uj* tt/dq 09fosno eh 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 negligible friction on aauu(n,lhcec48sr zdh 6 r*c2/ 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 fast will the car be moving afc2hz(lu ruhacsr 8e d,6/c*4 nter this happens?

  A 60-kg person walks on a 100-kg log at the ls,isay 2a*1ih k-f,frate of 0.80 m/s (with respect to the log). With what spk 1is ,h lif2f,ya*s-aeed does the log move, with respect to the shore?

  A 4.0-N force acts for 3.0 s on an object. Tnr;dj42iti1jn a)p 6 y0,owzmhe force suddenly increases to 15 N and acts for one more second. What impulse was imparted by these forces to thej4i)a wr yinn0 t;mjz61 p2d,o object?

  A constant 9.0-N net force acts foy1uy0zdo y9, lwcz 8+ roo*g(sr 2.0 s on a 6.0-kg object. What is the object's change of velocido,syoclo y wz8zy 0*+r91g(uty?

  A 2000-kg car, traveling to the right at 30 m/b:7d dr i/9rm gwqjm*wq8gbd4h y21z.s, collides with a brick wall and comes to rest in 0.20 s. What is the average force the car exerts on t 2ddmg7q wm4j wrid b/*8yz.qrh91g:bhe wall?

  A 2.0-kg softball is pitched to you at 20 m/s. You hit the ball back along f.i/vvm e-lgyyo2e0 z92uu5jthe same path, and at the same speed. If the bat was in contact with the ball for 0.10 s, whaeuoi.vm lzy52-ye0ju29 gvf/t is the magnitude of the average force the bat exerted?

  A 0.10-kg ball is dropped onto a table top. The speed1b. y 3mp9 ssfv-nm-fgs of the ball right before and right after hitting the tably- 9-fmfv nbs.p3s 1mge 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 force exerted on the ball by the table top?

  A machine gun, of mass 35.0 kg,+tu0l2tc tfi 1;gt1)gva8m el fires 50.0-gram bullets, with a muzzle velocity of 75gt +lfei0 2 uv lt1c)at8tg;1m0 m/s, at the rate of 300 rounds per minute. What is the average force exerted on the machine gun mount?

  A fire hose is turned ont+t t ;/h1 exvbo*4ln4t fxc+n the door of a 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 stre +b4olveht1x n+tc4t;n/ *xtf am needed, assuming the water doesn't bounce back?

  Water runs out of a horizontal drainpipe at the rate of 120 kg mjw); y/ y1tt1 g*wuswwvmh2hx ,y2r+per minute. It falls 3.20 r1+mhu2 j1gm* ytt,wwy)wywh ;s 2x/v m to the ground. Assuming the water doesn't splash up, what average force does it exert on the ground?

  A toy rocket, of mass 0.12 kg, achie54xpu: 5 i3iz-ibu:btkr*yvd ves a velocity of 40 m/s after 3.0 s, when fired straigh-354b:y5ui* izpu: k vdxbi trt up. What average thrust force does the rocket engine exert?

  Two astronauts, of masses 60 kg and 80 k,ef efit7uh280 k;ylhg, are initially at rest in outer space. Thetk;7,28ieh 0f ufhlyey push each other apart. What is their separation 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 collides ingxbdk/ c8s-orwa / mb9r3:3 cp a perfectly elastic collision with a 6.0-kgrgba-sword: //8cmbp 93 xk 3c 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-ont,r2b4hx:fur;ky /sdig ).m g elastic collision with a 0.15 kg object initially at rest. What is the final b 4yr k ;dt, x2.g:u/shfimg)rvelocity of the 0.10-kg object after collision?

  A 10.0-g bullet moving at 300 mut+ f-/ sce1gxg3y+q98 pqohl /s is fired into a 1.00-kg block at rest. The bullet emerges (the bullet does not get embedded in the block) with half of its origq e-chlfq3+8 +tgpxyu/ 1g so9inal speed. What is the velocity of the block right after the collision?

  A proton, of mass m, at restue/lz*y xs4 :7e5d.eljqdl+ u , is struck head-on by an alpha-particle (which consists of 2 protons and 2 neutrons) moving at speed v. If the lueqels4 d :u.e+ylz*7j /d5 xcollision 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 with a statiq 9- xh f7lunuf3;2rjfdo) 3qtonary ball of mass 100 g. The collision is elastic. What is the speed of each ball immediately after the collis92 j3u)o-t7nh qflf3x q;dufr ion?

A ball of mass 400 g moving ti)d bxa3k-w ;howard the east with a speed of 3.70 m/s collides head-on with a 200 g ball sitting at rest. The collision is perfectb x3d;-kaiwh)ly 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. os yeka;x4 6,af.l)ku It collides head-on with a 3.0 kg mass at rest. If the collision is perfectly inelastic, what is the speed of the masses after the c6 ouya4s k,;xafk).el ollision?

  A 2.0-kg mass moving dztc bog.( nfo ev405ykms;1;to the east at a speed of 4.0 m/s collides head-on in a perfeck .gtzyodn0es45(m;f;o1c b vtly 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 wagonh ue6p 1kewi-(, who's mass is 2m. The bumpers lock together in this head-on inelastic collision. What fraction of the initial kkpewu h(1e- 6iinetic energy is lost in this collision?

A 15-g bullet traveling 213 m/s in a vertical dv5 hl;h0hc ,gvlp;u/m irection buries itself in a 2.4-kg block of wood a rest directly above it. As a result, the bullet/block combination moves ph /0lv m;ucl5h,hvg; 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 orr)/ e*)q(+obqi xvd,b/c s twith a 3000-kg car traveling at 60.0 km/h south. The two cars stick together after the collision. (See Fb/+)t)(irqcxr*qv/ ,od beos ig. 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 3000-.jls/v 0extg 3kg car traveling at 60.0 km/h south. The two cars stick together after the collision. (See Fig. 7-1.) What is the direction of motion of the cars aftees/tjgl0 xv3 .r collision?

  Two objects move on a level f0qu ne oshs7(8jkc4cr qa:)on:2yac 3rictionless surface. 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 th:n7o083cos (nra asq2cc4 yjq )h:eu keir combined momentum after the collision?

  A small bomb, of mass 10 kg, is moving toward the North with a veloddhenqp5, 6ds gg u4;7city of 4.0 m/s. It explodes into three fq4 des56h pgd,nu;g7dragments: 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, xe7r a .so*w9wand a 10.0-kg mass sits at x = + 21.0 m. Wher sox w97ae*r.we is the center of mass on the x-axis?

  The center of mass of a two-particle system is at the origin. One particlwb g+r-cw :jk*jg7nu/e is located at (3.0 m, 0) and has a mass of 2.0 kg. What is the lugbjn -wrg: +kw/*7 jcocation of the second mass of 3.0 kg?

  Three masses are positioned as followma-ob6 qoz8n *77e/ouo pm/kis: 2.0 kg at (0, 0), 2.0 kg at (2.0, 0), and 4.0 kg at (2.0, 1.0). Determine the u pb8o6n mq 77o/omia-ok* /zecoordinates of the center of mass.

  Three masses, 1.0 kg, 2.0 kg, and 3.0 kg, are located at (0, 0), (1.0 m, 1.0wm9t m3j (5jd/eccz p7 m), and (2.0 m, -2.0 m), respectivewp9mmtc3cz57 /d ( ejjly. What is the location of the center of mass of the system?

  A 3.0-kg mass is positioned at (0a-,ufxj9/hh l6e +kpd, 8.0), and 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 center of mass of the system of three masses being located at tlk6/e xduhp,+f9ajh -he origin, (0, 0)?

  Use Table 7-1 to calculate the position of the CM of a whole leg including the (v; l83h v1nxsa)ahtafoot when the ht 1vah)xl sv3a(;n8 aleg is stretched straight out. Assume the person is 1.60 m tall.