What is the SI unit of momenta7 c8m0fser w, 7zm;itum?

  When a cannon fires a cannonball, the cannon will recoil backward because g: pekoguo/ob1wutk4s9d 5 4+o:j8pathe

  A freight car moves along a frictionless level railroad peizl h4sb evrg ;9,12track at constant speed. The car is open on top. igplee v914h2sr ;z,b A large load of coal is suddenly dumped into the car. What happens to the velocity of the car?

  A child falls sideways o7r sfv)rh49rlff a sled while sledding on frictionless ice. What happens to the velocity of the sled49)f vrsrhlr7?

  A rubber ball and a lump )ne4 d 1tnfri02wuzz k:o 88ghof putty have 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 objectntro4gk8 f8dzw:ui)z0h1 2 en s experiences the greater momentum change?

  A sailboat of mass m is moving with a momentum p. ynwmjo 7b.lq4 :vm r;*How would you represent its kinetic energy in lyr wj.q:mo;v4*n7bm terms of these two quantities?

  If you pitch a baseball with twice the 4; sf;k efdg+;cn. elxkinetic energy you gave it in the previous pitch, the ma.ec; d+skn ;xlf4g; fegnitude of its momentum is

State Newton's second law in terms of momo0vg,fax 6 ptr:lfdu1g, 0tfk8fm w9-entum.

State the law of conservation of8ieek .)cx :vmcmo-1k momentum.

  The area under the curve on a Force vea pn/bfham:0up37fk;rsus time (F vs. t) graph represents

  Which of the following is an accuraj bl5xg j9v2ldo;l8 2yte statement?

  A small car meshes with a lpw hsfe)1n y (ufgqs:(qk,u jk1;)sm 8arge truck in a head-on collision. Which of the following statements concerning the magnikjunfqsg1f )(hum s qy);,p e 8(ksw1:tude of the average collision force is correct?

  Two equal mass balls (one red ao,r* sidl/u 2e lou: bx/x5k2nz2wwr) nd 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 during il/uxd le2 2/bw5wno:rkr) x2*,osui zts collision with the floor?

  A Ping-Pong ball moving east at a speed of 4 m/s, collides with a stationary bu9(f gb temym0yv0t--owling ball. The Ping-Pong ball bounces back to the west, and the bowling ball moves verv bmmg9yf(tu0- e-yt0y slowly to the east. Which object experiences the greater magnitude impulse during the collision?

  Two objects collide and boun0a qgkfj3x 4;nce off each other. Linear momentum

  A 3.0-kg object moves to the right ap tr.fw6l+hw0c8vbs 8t 4.0 m/s. It collides head-on with a 6.0-kg object moving to the left at 2.0 m/s. Whichlsrbw0tpw fc6.8 8h+v statement is correct?

  A 100-kg football linebacker moving at 2.0 m/s tackle0guo17mt ;n hgs head-on an 80-kg halfback runninn 1hmg; ugot07g
3.1 m/s. Neglecting the effects due to digging in of cleats,

  In an elastic collision, if the momyhs e175te4 0,x diijdentum is conserved, then which of the followisdx 7jdet150 eh,i i4yng statements is true about kinetic energy?

  When is kinetic enerqnjdt.8-x 0n n ,pjx6qgy conserved?

  In a game of pool, the +7k71htcpxz1ob fa v1 white cue ball hits the #5 ball and stops, while the #5 ball moves away with the same velocity as the cue ball had originally. The typ fkh1vptc 71o7ab1x+z e of collision is

  When a light beach ball rolling with a speed of 6.0 m/s collides w8fb:c y1tu8d; v gqq-zith a heavy exercise ball at rest, the beach ball'tf81d;zqcq ug: -v8ybs speed after the collision will be, approximately,

  A golf ball traveling 3.0 m/s to the right colezl d,q*x- n;cx 3j oldva)(w/lides in a head-on collision with a stationary bowling ball in a friction-free environment. If the collision is almost perfectly elastic, the speed of the golf ball immediately afterqj(a cxx*;-dd,ovn3w/lzel) the collision is

  A rubber ball with a speed of 5.0 m/s collides head-on elastically with anqf992-9mrm6q cj cqux *suvy, identical ball at rest. What is the speed of the initially stopped ball after the collisionus2 6jcqvr9qm 9mx-9q, y*fcu?

  A very heavy object moving with speed v collides hea+z oaafu,o k8uwvb f0qd996. td-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 object a ou8zaotd9uwqb,+.6fv a f09kfter the collision?

  A very light object moving withy8675 rkz a oy(y9 cgd(vrpwf.abuu6 6 speed v collides head-on with a very heavy object at rest, in a frictionless environment. The collision is almost perfectly elast9wp 5(u6y.fod8ac y7(zy6r vgukb a6r ic. The speed of the heavy object after the collision is

  A red ball with a velocity of +3.0 m/s collides hea 3e21ernbau 3ld-on with a yellow ball of equal mass moving2nreue13ab l 3 with a velocity of -2.0 m/s. What is the velocity of the yellow ball after the collision?

  A very heavy object moving with velocity v igw; :dzmhdh.*82m bh collides head-on with a very light object moving with velocity -v. The collisiogdz8 dm* :hhh2mbiw ;.n 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 collisiotqs 9+2bf5y ld:lzko;n, if the momentum is conserved, then which of the following statements is true about kinetic energy:qkb;f2d ylz o5+9l ts?

  Two objects collide and sti7ek*4e.c*;coln*tb ak 7hb6wiesutzo: my ) 8ck together. Kinetic energy

  A 3.0-kg object moves to the right a/qdj 6umio5 .ds7inl: t 4.0 m/s. It collides in a perfectly inelastic collision with ad6qn. iuo5:s7/limjd
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 pzd+vw( pf 548ezys:c a large object and sticks. Which object experiences the lare s:4wzpvp f5y8(cz +dger magnitude of momentum change?

  In a game of pool, thre .scs3txs9: py5 bp/y4efw 3e 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 masses, M and 57ef: aby)tuz(mvzjp q+y;+ym. Which of the following statements is falsymzq+ ve:uy j)y75ztb; ( fa+pe?

  Which of the following is a fv,/jp8wiw -i4:tb lhyalse statement?

  Tightrope walkers walk wit; h amiqb-l87th a long flexible rod in order to

  A plane, flying horizontally, releases a gh :ykjm)qh542xa qj/;5cz 1guy+ qrjbomb, which explodes before hitting the ground. Neglecting air resistance, the center of mass of the bomb fragments, just aftermyqza 4 g5uyjh 1qhk +q;/:j)gc2 rxj5 the explosion

  Two cars collide head-on on a level friction-fr6(tro3p3ya qqn+z+ xed1 n .yy- c1gloee road. The collision was completely inelastic and both cars quickly came to rest during the col+1oa3ny- lq1yco(+qtz3x6dry p .egnlision. What is true about the velocity of this system's center of mass?

State Newton's second law fo,qvbts.c6zx c 31e fbe 3:ht y*,/bbdy:x2zgpr a system of particles.

  What is the momentum: *d +9saqg c56;l -xjj0aqky mib7zqg of a 2000-kg truck traveling at 35 m/s?

  A 1200-kg ferryboat is moving south ajx6ns32r1s gev8- lgct 20 m/s. What is the magnitude of its momentusjl-xcvns3r e 61g 28gm?

  A ball of mass 0.10 kg is dropped from a height of 12 m. I ptdso4;oyx36ts momentum when it strikes the63oysx;dp 4 to ground is

  Two identical 1500-kg cars are moving perpengfnr, ,o-ztph.bs /-wdicular to each other. One moves with a speed of 25 m/s due north and the other moves at 15 m/sso- bt, fnrp wg/,.hz- due east. What is the total momentum of the system?

  A handball of mass 0.10 kg, trave4ufk a0c*iz j7ling horizontally at 30 m/s, strikes a wall and cua*70k f4jzi rebounds 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( r 2n 7)ntyqmuehw86f of 12 m/s, is struck by a racket causing it to rebound in the opposite direction at a sw()n76hq f8m rent2yupeed 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 fr*gy.ul,z pe zm*ff a fl-((yu0ozen pond. The machine fires a (l fg f(0 luz.eyayu**m ,-fzp0.40-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 space caplqn1fm/v. m(qi 1d,5ny yx)eb sule 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. At what speed does the astronaut move toward the 1x q,v 1mi ny.fbmydqn/e5l()capsule?

  A small object with momentum 5.0 kgm/s approaches head-9fec tr 2 m9qmb3z2cjf5hg*q,on a large object at rest. The small object bounces straight back with a momen*gtm29b ,qf r29cm fzq cj35hetum of magnitude 4.0 kgm/s. What is the magnitude of the large object's momentum change?

  You (50-kg mass) skate on ice at 4.0 m/s to greet y 3wa2yly.r:qp our friend (40-kg mass), who is standing still, with open arms. As you collide, while holding each other, with what speed do you b rpw.2aql3:yy oth move off together?

  A car of mass 1000 kg moves to the right along a level, straight road a0gep m s :vmdo3s+3:gmt 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 cmpmsgod: 3g3+:s emv 0ollision?

  A 1000-kg car traveling at 25 m/s runs into the reall w,h4 sp-b.tr of a stopped car that has a mass of 1500 kg and they stick together. What is t4l tsbl w-.,hphe speed of the cars after the collision?

  A railroad freight car, mass 15,000 kg, is allowed ,+ gp / m4e8cw/i7yz9ybxnefcto coast along a level track at a speed of 2.0 m/s. It collides and couples with a 50,000-kg second xbf9yn4yecpc7,/i/+w gz e m8car, 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 a horizfwn7bm k1a.v(3 z( qabontal track with a speed of 10 m/s. A 70-kg stunt man drops straight down a distance of 4.0 m b wa3a1mqb7vknf (.(z, and lands in the car. How fast will the car be moving after this happens?

  A 60-kg person walks on a 100-kg lqor0jq(wytqn.:k l 0wh q/ (4fog at the rate of 0.80 m/s (with respect to the log). With what speed does the log move, with respect to the shqqwjtf (qnrqol.0kw/40y ( :hore?

  A 4.0-N force acts for 3.0 s on an object. The force suddenly increases toe+*skl tp qr: 4kba,b5 15 N and acts for one more second. What b t5l, :kresb p4kq+*aimpulse 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. Wha 5:qh 6pvx.vqk6qm n0lt is the object:phx6 5n0.vvmq qlkq6 's change of velocity?

  A 2000-kg car, traveling to the righl(13egn/duk/ r oj *ggt at 30 m/s, collides with a brick wall and cnkg1rugg(j*de /3/ olomes to rest in 0.20 s. What is the average force the car exerts on the wall?

  A 2.0-kg softball is pitched to yogy ec*d,m yc1p mmc aqy-r/0fk5c7(n4u at 20 m/s. You hit the ball back along the same path, and at the same speed. If the bat was in co50(7y-m ey4 prk n,dycm/g1 afqcmc*cntact 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 rigsouz-23vspd u 12qoi 59ixor -ht 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 the average force exerted on the baoou dxzov-ri 2us3- p i52s91qll by the table top?

  A machine gun, of mass 35.0 kg, fires 50.vf+efo 4algohd . :(a+0-gram bullets, with a muzzle velocity of 750 m/s, at the rate of 3ed( vf o.f4+: hgaao+l00 rounds per minute. What is the average force exerted on the machine gun mount?

  A fire hose is turned on the door of a 2 w gxwy-*i.rzz0 vju;.0evvkburning building in order to knock the door down. This requires a force of 1000 N. If the hosg v*xz ewi2v.v j;-wkz0u0yr .e 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 horizontal drainp f+ 7dj;n 8uhvg4)krbaipe at the rate of 120 kg per minute. It falls 3.20 m to the ground. nr7 a8 j;)4bgkhd vuf+Assuming 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 )752wlx fkfqevelocity of 40 m/s after 3.0 s, when fir7ff5q)k l2x ewed straight up. What average thrust force does the rocket engine exert?

  Two astronauts, of masses 60 kg and 80 kg, are initially; ieu purav(uk zn5+ dx-q+4+r at rest in outer space. Thex-r vpuru( 4ua++ieq kn+d;z5y 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 2.3+mq gim(lt5c xwu20u0 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 totalqgx2mmtluuc+w3 0 i(5 kinetic energy after the collision?

  A 0.10-kg object with h6p cil3xxehw0 si ,g;bm95n*) pjxj/a velocity of 0.20 m/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 the 0.10-kg object a96h j5)cx0b*en3x/ mpgl ;hi,js xpiwfter collision?

  A 10.0-g bullet moving at 300 m/s is fired qy2uv jhc/nxavlx y 3t+,0y l.w7o.8 ninto 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 rixw o.7l+0ycvj v ./ n2,nlxuq 8htayy3ght after the collision?

  A proton, of mass m, at rest, is struck ;n2y nuvkik9. head-on by an alpha-particle (which consistsu.k 9n2;kvyi n of 2 protons 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/aqzzn 0onko+h3q5) u .s collides head-on with a stationary ball of mass 100 g. The collision is elastic. 3nok nuz5 .)qqz0h oa+What is the speed of each ball immediately after the collision?

A ball of mass 400 g moving toward the east with a speed of 3.70i(q:f .a++l l hmgcvl6 m/s collides head-on with a 200 g ball sitting at rest. The collision lmhq+cl6. l:gifva(+ 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 e- sr,sb1 gbu5a speed of 5.0 m/s. It collides head-on with a 3.0 kg mass at rest. If the collisionb bsr,e sgu1-5 is perfectly inelastic, what is the speed of the masses after the collision?

  A 2.0-kg mass moving to the east at a speed of 4.0 m/s collides head-o*c7wofn ;pb-vn in a perfectly inelastic cocvw- bof*7pn ;llision with a stationary 2.0-kg mass. How much kinetic energy is lost during this collision?

  A car of mass m, traveling with a vex yje9y;ez5 i1nl fu53locity 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 energy is losiej55 1fyl9yn x; u3zet in this collision?

A 15-g bullet traveling 213 m/s in a vertical directe z5+ j (g8itsu/u5vwkion buries itself in a 2.4-kg block of wood a rest directly above it. As a result, the bullet/g+/5 e it5k(uz vs8ujwblock 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 witufv6appso * +7h a 3000-kg car traveling at 60.0 km/h south. The two f *up6ao spv+7cars 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 cq)k +q).sjfq.cd ti r7ollides 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 direction of motion of the caq). q.iqdf+jk ts )7rcrs after collision?

  Two objects move on a level fric305hv+rj5dq4xp 8 xfqn do l-nom;uu7tionless surface. Object A moves east with a momentum of 24 kgm/s. Object B mlhqn;-4 55o0mxf7vpxr+3 u u8qondjd oves 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 velocity of 4.4os p 22x./kqomp ga,i0 m/s. It explodes into om42p xi/p2 okg.sa,q 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 10.0-kg mass sits at x = + 21.0 m .*i nc8)7 dstpj-j/epclnto 3* h/fgl. Where is thifpe 78c dog spt)/n ljt/*h c-nl3j.*e center of mass on the x-axis?

  The center of mass of a two-particle system is at the origin. Ond9r21f2on1mig oluc 3e particle is located at (3.0 m, 0) and has a mass of 2.0 kg. What is the location of the second ma9l 3rcnm gu2o1o2i1dfss of 3.0 kg?

  Three masses are positioned as follows: 2.0 kg at (0, 0), 2.0 kg at (2.0, 0)oz1 wazv: ):xu, and 4.0 kg a x:ouv1a:z)zwt (2.0, 1.0). Determine the coordinates of the center of mass.

  Three masses, 1.0 kg, 2.0 kg, and 3.0 kv0; r*.ivz7k4v odg1w;gybh*cv pu7 p g, are located at (0, 0), (1.0 m, 1.0 m), and (2.0 m, -2.0 m), respectively. What is the locat;pg* g ypc0vdwhi1r7vz;u 7.v k*vob 4ion of the center of mass of the system?

  A 3.0-kg mass is positioned at (0, 8.0), and a 1.0-kg :z4 4.g v uwl3j0qfuwz-1btblmass 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 bf-13:04z4.l wj zqt bwluvugmasses being located at the origin, (0, 0)?

  Use Table 7-1 to calculate the position of the CM ofxs sydo v::lha 9.zy43 a whole leg including the foot when the leg is stretched straight out. Assume thvdha y:y. 4zs93os :lxe person is 1.60 m tall.