What is the SI unit of mome8 ixly./ be)wcntum?

  When a cannon fires a cannonball, the cannon will recoil backwardz-+h zyeqni6 5w3mn-q because the

  A freight car moves along a fricxmd8l v3m 5 *p+5ixqb:by/gj itz8i:etionless level railroad track at constant speed. The car is open on top. A large load of coal is suddenly dumped into the car. What happens to the veloc:yzm5gm vbile i/:xx35 *q88pji db+tity of the car?

  A child falls sideways off a sled while sledding on frictionu8)sffq,6agvm ,k nr5 less ice. What happens to the velocity of ths ,f)k gf vaq,8u5r6nme sled?

  A rubber ball and a lump of putty have equal mass. They are thrown with equal sigx*mzye * iiq9x1f.o: 3: mnupeed against a wall. The ball bounces back with nearly the same speed with which it hit. The putty stick:z * 91n*e yfoixx.g3:i qmimus to the wall. Which objects experiences the greater momentum change?

  A sailboat of mass m is moving with a momentum p. How would you r i0k5 l5qg7qahepresent its kinetic energy in terms of t7hi 5 a0q5qklghese two quantities?

  If you pitch a baseball with twice the kinetich3omqje)x aq6 be7 )t1li58zk energy you gave it in the previous 8 i1qxqe )6ol3)j5 7zbhetmakpitch, the magnitude of its momentum is

State Newton's second law in terms of momentgy51(qz*i/btf2cdqn) fz s 8e um.

State the law of conservatio((u70gjq6 fq/twb/rro y2mes 2k jf9gn of momentum.

  The area under the curve on a Fo 5;0hj(p5fl in pmm5nlrce versus time (F vs. t) graph represents

  Which of the followingd-xl4 5a dmj/2ku m -bmak.wt;iz) if( is an accurate statement?

  A small car meshes with a large truck:6k2dcf v6)c7;io fxtelwi g( in a head-on collision. Which of the following statements concerning the magnitude of the average collision forcexeoc: gc2t;wifv6f( i6 7dkl) is correct?

  Two equal mass ballspm3ldu 6u5x1 z (one red and 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 its collision with the floorl5uz1mx up6 3d?

  A Ping-Pong ball moving md:*l;s i+i1p4wsl 2pr fp,3wamd8yieast at a speed of 4 m/s, collides with a stationary bowling ball. The Ping-Pong ball bounces back to the west, and the bowling ball moves very slowly to the east84+y;1sf 3aip2sprwlw:ml, * m dipdi. Which object experiences the greater magnitude impulse during the collision?

  Two objects collide 2do.+pswk-rw 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 wi/ zw5f.f+v9*dycwo/ d m5g 6il*wot wlth a 6.0-kg object moving to the left at 2.0 m/s. Which statement is co6ddl* *io /5.5fl zw9yoww+gvm /cftwrrect?

  A 100-kg football linebacker moving at 2.0 m/s tackles head-on anm. k/ hz2soj7t 80-kg halfback rt hs/2omk7z.junning
3.1 m/s. Neglecting the effects due to digging in of cleats,

  In an elastic collision, if the momentum is conserved, then w9 po k)hx p3*1i*0n pei9xkv*dm0 waxxhich of the following statements is tr0 k91 ph)n*xwp3 modavxek0x xp9i** iue about kinetic energy?

  When is kinetic energy coni)27dis fvji ty:zfj9r2 z5q6served?

  In a game of pool, the white cue ball hits the #5 ball and stopsnnq1 x h nk,*3yw3i:swx)kgj/ii0 fn/, while the #5 ball moves away with the same velocity as the *ki: ni3wgn/ nix/sjw1kqx3h f,y) 0 ncue ball had originally. The type of collision is

  When a light beach ball rolling with a speed of 6.0 m/s col b*/o*ik //xovfrie2b lides with a heavy exercise/ */eiv2r *okbbix/of ball at rest, the beach ball's speed after the collision will be, approximately,

  A golf ball traveling 3.0 m/s to the right colqmml b (aw99d4hym )q-lides in a head-on collision with a stationary bowling ball in a friction-free environment. If the collision is almost perfectl al-q)y4 9wdmm q9bm(hy elastic, the speed of the golf ball immediately after the collision is

  A rubber ball with a speed of 5.0 m/s colliden6d*rji d2w3js head-on elastically with an identical ball at rest. What is the speed of the initially stopped ball after t*32wnj dr6 jidhe collision?

  A very heavy object moving wittg/pdxq-;q pd1wy7w 0h speed 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 object aftey0/p7gwxqq ddw-;p1 tr the collision?

  A very light object moving with speed v collides h oy3k /j6uo7oxead-on with a very heavy object at rest, in a frictionless environment. The collision is almost perfectly elastic. The spxoju 7k/3yoo 6eed 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 bau8sfg2 ;ftw 2kll of equal mass moving with a velocity of -2.0 m/s. What 2; 2 fuwfgt8skis the velocity of the yellow ball after the collision?

  A very heavy object moving p d3drjex97i 3 beid):with velocity 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 3d9 depxebi3) ir:j7d light object after the collision?

  In an inelastic collision, if the momentum is conserved, then which of the fo40ur,4osln up llowing statements is true abou suporu4l 4,n0t kinetic energy?

  Two objects collide and sticr )u/x *it5sz)pp)pjnk together. Kinetic energy

  A 3.0-kg object moves to the right at 4.mt9, agwgqkk ah 7g 2*u85.l(rwkkl w80 m/s. It collides in a perfectly inelastic collision withq(wa5.hwkga78,k g glk * r9kmt2uw8l 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. Which object experiel2zb 8vm)2wttnces the larger ma2mtlz) 8v2wtb gnitude of momentum change?

  In a game of pool, the white cue bx: nqcngue7)70ajc0sall 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 man+5i wvkd.l -+cyx+cx sses, M and m. Which of the following statements is false+5ncl-dc+.+w xvxky i ?

  Which of the following mu0or0/-/bd t/xive) 8*wr i ym0tsnli lm66nis a false statement?

  Tightrope walkers walk with a long leifyr8hk 9 08*jo4xg flexible rod in order to

  A plane, flying horizontally, releases a bomb, which explodes before hitting theu+soh-pw 5z/ nl(6p.okmyw o0 ground. Neglecting air resistance, the center of mass of the bomb fragments, just afo n5umslowo zy6+pwk(-p/ .h0ter the explosion

  Two cars collide head-on on a level friction-free road. Tt j s+nepxc12 rk43 s-my*cp+che collision was completely inelastic and both cars quickly came to rest during the collisionmperp + j sc*+ kyts2cx3-c1n4. What is true about the velocity of this system's center of mass?

State Newton's second law kxrtyd4v//2)uye2 ee for a system of particles.

  What is the momentum of a 2c /o j9*h1gtbr000-kg truck traveling at 35 m/s?

  A 1200-kg ferryboat is moving south at 20 m/ 0d71c li,n7geg5dk ;ffm0zyis. What is the magnitude of its momentum i77gdy;0lfe kzdmc0fg, 1ni 5?

  A ball of mass 0.10 kg is 5- mpx/3g0 bcwo.sndjsj1 h6wdropped from a height of 12 m. Its momentum when it strikes the/wopbn 0cgm6-j3.1xds 5sh jw ground is

  Two identical 1500-kg cars are2k5r 7ozfu:dk6 9f5scx:ar sk moving perpendicular to each other. One moves with a speed of 25 m/s due north rk7dzo fc 5xa 96:kfr2sks5u: 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, traveling horizontally at 30 m/s, strikes a wall 8cgpg3b+i uy1) b5t vcand rebounds at 24 m/s. What is the change 3)t1i 85bg cpbcvugy+ in the momentum of the ball?

  A 0.060-kg tennis ball, initially moving at a speed of 12 2poe9p dyk 2bl9hl4:m m/s, is struck by a racket causing it to rebound in the opposite direction at a speed of 18 m/s. What is the:hly2pp loe94km9 d2b change in momentum of the ball?

  A 50-kg pitching machine ;*f y* sozgh5gf-ope*j5 r7ah(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 pitching machine? (Assume negligi7; ghr pjh-5o*syeo** gzfaf5 ble friction.)

  A 70-kg astronaut is space-*g0 /hsc p)a8urzgb 0rwalking outside the space capsule and is stationary when the tether line breaks. As a means of retu8rrzb such /*g0)ap 0grning 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 head-on qvwv -w vt:n8cava* pzeh)y;7h0,ho- 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 vv c z8ay;hvh,h*07pawn:v q- w)t -oethe large object's momentum change?

  You (50-kg mass) skate on icdzz ehuw0 pc7219rn)c e at 4.0 m/s to greet your friend (40-kg mass), who is standing still, with open arms. As you collide, while holding each other, with what speed do hw912dzrzp e c7uc)0nyou both move off together?

  A car of mass 1000 kg moves to the right along a level, str p:7,nq :xmwykql :yq u3a)uq7diqs 0*aight road at a speed of 6.0 m/s3qmlq:k ::,qpq7aq iysd n7uy0*wxu). It collides 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 ,d b(ilel:+6m ,sie 6 eavdv8bruns into the rear of a stopped car that has a mass of 1500 kg ,8ime+ die6b l ( lv,b:svd6aeand they stick together. What is the speed of the cars after the collision?

  A railroad freight car, mass 15,000 kg, is allowed ty i1sf,etc ,z9edns1 3l0 kc9lo coast 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 a0ik1,z, 9 3ndslc fets9yle1cfter coupling?

  A railroad car, of mass 200 9 dwr uqd)yf nsi)6-:akg, rolls with negligible friction on a horizontal trac6r-y 9a: dw)s)fqdi unk 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 after this happens?

  A 60-kg person walks on a 100-kg log at the rate of 0.80fad))c ynro, yn* q8u0 m/s (with respect to the lrfd co),8nya0q)*nu yog). With what speed does the log move, with respect to the shore?

  A 4.0-N force acts for 3.0 s on an obxx68vl3mw u ; p/mne.dject. The force suddenly increases to 15 N and acts for one more second. What impulse was imparted by t m6m/ewdu8p;n 3x vlx.hese forces to the object?

  A constant 9.0-N net force acts for 2.lzj+/l(9 s3xysj*fku kt -3+ifm*f lp 0 s on a 6.0-kg object. What is the object's change of velocit*s lz yfklfip-tx9j/( 3j+f k+msu l3*y?

  A 2000-kg car, traveling to the right at 30 m5efq w m-yi 3-swmr-j.elv *.gl7nl2pkl 4 ra(/s, collides with a brick wall and comes to rest in 0.2 vea-n l45(- qf2l7. eyk rirm.w*-mlp3jwg ls0 s. What 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 thu6 xrh /vl)e,(2cv/fhn2mo mcab5(rpe ball back along the same path, and at the same speed. If the bat w6u mv rphxafe// ,o)vc(ch2(m2nrl5 bas 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 ball rigq8qt ra-x;7a 8h-7 terkpo+ jhht before and right after hitting the table top are 5.0 m/s and 4.0 m/s, respectively. If the collision betwee jeor8p r;+h tk7ta-8aq7 -xqhn 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, fires deu5*;dqd *k .7 sh- f3saytfw50.0-gram bullets, with a muzzle velocity of 750 m/s, at the rate of 300 rounds per minute. What is the average force*qf3s-e*7d ykft.a udsdh;w 5 exerted on the machine gun mount?

  A fire hose is turned on the door of a ,pha azrt06l , mqxi (3f(ue.8mnitm7 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 veiazu t 7,,en qr.mhf0mp6 3ximt la((8locity of the stream needed, assuming the water doesn't bounce back?

  Water runs out of a horizgu 4kv (j81nqxontal drainpipe at the rate of 120 kg per minute. It falls 3(qunx4j1kg v 8.20 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, achg6 e0f/mq:q+mwk2dwv ieves a velocity of 40 m/s after 3.0 s, when fired straight up. Whaqf 6ev/mwwg:2 mk+dq0t average thrust force does the rocket engine exert?

  Two astronauts, of masses 60 kg and 80 kg, are initially at rest in outer spacevs / hgd,w6m02xgqv f846(pvh:xp jzi . They push each other apart. What is their s wq/vf vx(4i80pzpd,j gh:xh6 6gs2mveparation 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 colli ve hhzsr;9(2bdes in a perfectly elastic collision with a 6.0-kg obevb;hh2z 9sr( ject 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/sn.hteijr-*2avh,0 qab z u 7jld)sh3: in the +x direction makes a head-on elastic collision with a 0.15 kg object initially at rest. Whaabez- 2 7vh: i, q)djlarthjh*u n3s.0t is the final velocity of the 0.10-kg object after collision?

  A 10.0-g bullet moving at 300 m/s is fired inttb4h/4phrhq6jcr j w:ac s, .17oz h+bo a 1.00-kg block at rest. The bullet emerges (the bullet does notbcrzj 4.4w :,hht6h+1c /objqa7h prs 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, is struck head-on by anheijrl3o 9 akl8f 8s.4 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 have after tejh o4i9rak sf l8l3.8he collision? (Assume the neutron's mass equals the proton's mass.)

  A 50-gram ball moving +1c )isfk;v-k* g0 m/s collides head-on with a stationary ball of mass 100 g. The collision is elastic. What is the speed of each ball immediately after the collisiok; f-csvki)*gn?

A ball of mass 400 g moving toward the east with a speed of 3.70 m/s o;+3m 23c9a3mhrxk acg( s ixucollides head-3i ms( a2hucgcx+ k a3;ro93mxon with a 200 g ball 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 colli lf6b)tyf2d w(des head-on with a 3.0 kg mass at rest. If the collision is perfectly inelastic, what is the speed o)b(dfl6yt2w ff the masses after the collision?

  A 2.0-kg mass moving to the east at a speed of 4.0 jv0yon( wl7)rm/s collides head-on in a perfectly inelastic colli0j w) vyr(7lnosion 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 wagoip4 i;uc4hev6n, who's mass is 2m. The bumpers lock together in this head-on inelastic collision. What fraction of the initial kinetic envh4 6ic4e;upi ergy is lost in this collision?

A 15-g bullet traveling 213 a ctrc0jm8r i/50h n:8nn7sxa8 md7icm/s in a vertical direction buries itself in a 2.4-kg block of wood a rest directly above it.0jr:m/ t cn8ani 5sc x7c0m8di87r nha 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 :n4ss u8(b174 ms(xmxkwg h6 l(peei k90.0 km/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 speed of the cars after collie sge7u1s(w 6i p(kx:lm8x b4(nm 4khssion?

  A 1500-kg car traveling at 90.0 km/h east collides with a 300 zhi*)u j rmjsq;/e7z*0-kg car traveling at 60.0 km/h south. The r ;zsjiz*j/mu*hq 7)e two cars stick together after the collision. (See Fig. 7-1.) What is the direction of motion of the cars after collision?

  Two objects move on a level frictionless surface. Object A moves eh9q-mn.+m1xkbc a w/:7tfr7ch0 u wymast with a momentum of 24 kgm/sb+a:ywmc uhf 1 r9m7 0kmchwt .-q/nx7. Object 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 a velo qm*.ocifh-ffo:2x8n city 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 the velocity of the thfin xf-of8ch oq.:m2*ird fragment? (Neglect air friction.)

  A 4.00-kg mass sits at the origin, and cc3urgh4w 3,* h( xn xxjt-n9ma 10.0-kg mass sits at x = + 21.0 m. Where is the cen*34wchmx xhjr n ,3u(gtcx- n9ter of mass on the x-axis?

  The center of mass of a*d f qklt plu9s3i0r()y2+l dv two-particle system 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 second mass3k2qs9y) fviludp + * llt0dr( of 3.0 kg?

  Three masses are positioned as follows: 2.0 kg at (0, 0), 2.0 kg at (2.swn t-h5, ttg(0, 0), and 4.0 kg at (2.0, 1.0). st(ngw5 -,httDetermine the coordinates of the center of mass.

  Three masses, 1.0 kg, 2.0 kg, and 3.0 kg, are located b1bp5da,kox z-ek,e 3 at (0, 0), (1.0 m, 1.0 m), and (2.0 m, -2.0 m), r,bdp3-ax,kz5bk e 1o eespectively. What is the location of the center of mass of the system?

  A 3.0-kg mass is positioned at (0, 8.0), and a 1.0-kg mass is positionekmoq./ i,e1io c 8tt3xd 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 the origi t oq8xeioik,/ ct1m3.n, (0, 0)?

  Use Table 7-1 to calculate the position of the CM of -bcfr f xgo999uy h77v2 6ugana whole leg including the foot wf79uvuhx6yobc 7 2-9 far9ggn hen the leg is stretched straight out. Assume the person is 1.60 m tall.