What is the SI unit of momentux*omw(jg )ha2m?

  When a cannon fires a cannonball, the c9l)z2s3svyemo rlz 0 k82(qwjannon will recoil backward because the

  A freight car moves along a frictionless level railroad track at cons+1ypmx sp0ww6.q s kj(tant speed. The car is open on top. A large load of coal is suddenly dumped into the car. mp6ss0 (+jk.x1ypwqw What happens to the velocity of the car?

  A child falls sideways off a sledpnygh7i 4d,1k while sledding on frictionless ice. What happens to thepk1gnh7i y,4 d velocity of the sled?

  A rubber ball and a lump of putty have equal mass. They aj-j ;o;6xpwesre thrown with equal speed against a wall. The ball bounces back with nearly thesj6;e pj- ;owx 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 yznk .am 1x8a.wk/vh/ay*iy :nou represent its kinetic energy in terms oyvhx:m k w ay*/k8n.iza1/n.af these two quantities?

  If you pitch a baseball with twice the kinetic energy yo1ynticl8q1r8;r6 coxno0 q9 v 3s yh6tu gave it in the previous pit80oro63q6tntyxis vqcc9yhl1;1 rn 8ch, the magnitude of its momentum is

State Newton's second law in terms of momj,zta4 4wt+j.0s xsr tentum.

State the law of conservation of mome3c*p 5w n/msb qdf 4v:b,fks*entum.

  The area under the curve on a Force versus y 2jad)-0a vb4javkl0 time (F vs. t) graph represents

  Which of the following is an accuri *nfh. -l;lhar5 g/rqate statement?

  A small car meshes with a large truck in a headqu1 (-+tj pwix-on collision. Which of the following statements concpt(1 j-+xiwquerning the magnitude of the average collision force is correct?

  Two equal mass balls (one red and the other blue) are dropped from the samb4rxq qxiw ui6-j. jt(102kvq e height, and rebound off the floor. The red ball rebounds to a higher position. Which ball is subjected to the greater magnitude of impulse during60ji( xbk2wqut1rxj-q i v .4q its collision with the floor?

  A Ping-Pong ball moving east at a speed of 4 mh:fksvc+:3ul)/b y km /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 east. Which object experienceh ::u/k fy3+vb m)klcss the greater magnitude impulse during the collision?

  Two objects collide and bounl ( +lqmq/s6ll8qbl/ nce off each other. Linear momentum

  A 3.0-kg object moves to the right at 4.0 m/s. xfex3tvg r,,u;v (xc/It collides head-on with a 6.0-kg,/;c 3u ,et vfr(vxxgx object moving to the left at 2.0 m/s. Which statement is correct?

  A 100-kg football linebacker moving at 2.01x don6-r :ndec- 6idv m/s tackles head-on an 80-kg halfback run-nxdd1:d ec in6 vo6r-ning
3.1 m/s. Neglecting the effects due to digging in of cleats,

  In an elastic collision, if the momentum is co35v gz*gvmx +znserved, then which of the following statem+v gzg *53zmvxents is true about kinetic energy?

  When is kinetic energy conserved7 kuu+yv 2qpvs+q +6lj?

  In a game of pool, the white cue ball hits t85t4t,km 5ar(v3wqdxd o5 qjk*wo x m;he #5 ball and stops, while the #5 ball moves away with the same velocity as the cue ball had originally. td5jqq 8k,x(v5oo* m;w5r dw43xm kat The type of collision is

  When a light beach ball rolling with a speed of 6.0 m/s colwp6sq m)svl.6h3 qj2tlides with a heavy exercise ball at rest, the beach ball's speed after the collision wltqjqp6 62) vmhw3s.sill be, approximately,

  A golf ball traveling 3.0 m/s to thf( e5we8qa/m9xsd: 7 ks bvz5n/l6c jue right collides 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 immediasudj(zac 8fe/w5s :k/ evmq 76lx9b n5tely after the collision is

  A rubber ball with a speed of 5.0 m/s collides head-on elasticaam+yiro- v9:y vgj io*wehh y38)y5- klly with an identical ball at rest. What is the speed of the initiall i h8:hy3y) g-ywo *ok emv9-y+5ijravy stopped ball after the collision?

  A very heavy object moving wd(d jdd5sitl0 6fg)c jm *7rqr04q)shith 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 after the col ) dd(*djq 4r7th65c ilsfdgmr qs0)0jlision?

  A very light object movinlte y:;ip*8r9ya t* nkdh83vng with speed v collides head-on with a very heavy object at rest, in a frictionless environment. The collision is almost perfectly elastic. The speed of the heavy object after the 8pv*3*an ltryy h :tn98dek i;collision is

  A red ball with a veloci,w x,4z3l j1ylf dm*hkty of +3.0 m/s collides head-on with a yellow ball of equal mass moving with a velocity of -2.0 m/s. What is wl hjk4mlx fz13, y,*dthe velocity of the yellow ball after the collision?

  A very heavy object moving r6nfaa b(vv 1; dyz:7)619l mwylnwkmwith velocity v collides head-on with a very light object moving with velocity -v. The collision is elastic, and there is no fri 9wlr(kzv)mly67a1 f dnavyw:b n;6m1ction. 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 conserved, then which of the follo 2pkt9yw0jv0mcr ) 6mwwing statem2wc wrv 96ypjm)0tmk 0ents is true about kinetic energy?

  Two objects collide and stick together. K1w)ta8g8cc y finetic energy

  A 3.0-kg object moves to the right 3y rd 1g5owc9f (dw*qij8b:pmat 4.0 m/s. It collides in a perfectly inelasticj*:cw y1(5omipr3d9bqg fd 8w collision 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. Which object exr4p - jy5l mgxie)5p2pperiences the larger magnitude of momentum c )jg5i5-perml 2xypp 4hange?

  In a game of pool, the white cue ball hits t p+x;nuv)39-zw sy9exnx+1 p oiv lu0 vwe6p+fhe #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 following statementkq9 ae3 ;6yhfz(puqhq mf6+(as is false?qyf3h6 aa(h qmk 6fez(q9 ;u+p

  Which of the following is a falspt1zl . ,pgdcw3 q7j3ye statement?

  Tightrope walkers walk with a long flexible rod in orderjyx22g6 8kcjx to

  A plane, flying horizontally, releases a bomb, which explodes before hihs4pnq,8+m rm)n7/cg :d* u hczg+zfqtting the ground. Neglecting air resistance, the ceng c un/m7gd pzh+c,*)z +:qn qhm8rsf4ter of mass of the bomb fragments, just after the explosion

  Two cars collide head-on on a level friction-free roa hd:vm +kx0 *o1flchf+d. The collision was completely inelastic and both cars quickly came to rest during the collision. What is true about the velocity of this system's center oxdvh* o0l1cm kh:+ff+f mass?

State Newton's second law for a syste (7/ sudcwbk4om of particles.

  What is the momentum of a 2000-kg truck travela1tv hz (c:4c02n;ds eg (yxdging at 35 m/s?

  A 1200-kg ferryboat is moving south at 20 m/s. W ,,;igalcks w+.qz;,o5r9ao 4mg mhl xhat is the magnitude of its momentum?;om ,x5zgw g,a ckmrsa +qllh,9.;i4o

  A ball of mass 0.10 kg is dropped from a hei+-4gc(i urzmf ght of 12 m. Its momentum when it strikes th(r4fimgz cu- +e ground is

  Two identical 1500-kg cars are moving perpendicular to each other. (ge4-dj i nzd+ m1h t(ui6afw;One moves with a speed of 25 m/s due nori(z1a6(; fe uj4 dinwgm+h- tdth 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 hq:isl0 dq. d;g rf2th4orizontally at 30 m/s, strikes a wall and rebounds at 24 m/s. dsdr;4 ti2q .:gflqh0 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, hx /ahi1t3d, r/c.xe,a1hb fn is struck by a racket causing it to rebound in the opposite direction at a speed of 18 m/s. What isef3/x, . ,xhbin/dhh1 ca r1ta the change in momentum of the ball?

  A 50-kg pitching machine (excluding the baseball) is pzfhp:bwt :x+z3ou7: placed on a frozen pond. The machine fires a 0.40-kg baseball with a speed of 35 m/s in the horizontal do h3 wp7:+:b:txpfu zzirection. 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 stationary (,r5dg7 veqy3onili + when the tether line breaks. As a means of returning to the capsule he throws hiili rov(e3+n 7y qg5d,s 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 a lar1i;cvw :wvd f0tu1km 9ge object at rest. The small object bounces straight back with a momentum of magnitude 4.0 kgm/s. What is the magnitude u1wtv:idw9v c 0fk1;mof the large object's momentum change?

  You (50-kg mass) skate on ice at 4.0 m/s to greet your frienrt96iji,rghdo *xg: ) vu q8h*d (40-kg mass), who is standing still, with open arms. As you collide, while holding each other, with what speed do you both move off to* t hdh*xvujir8,orqi :69gg)gether?

  A car of mass 1000 kg moves to the rr+ gcx k1;2h 3tob7v8ngnv3a sight 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 n2;b 8grston31gvv7c+ xk h3ais the total momentum after the collision?

  A 1000-kg car traveling at 25 m/s runs into the rear of a stopped car that s k.u4s8fbp qjjizl , s.9gr +ir92-arhas a masskp9l g+rs ,-2u rj if.j q8szr.9bsia4 of 1500 kg and they stick together. What is the speed of the cars after the collision?

  A railroad freight car, mass 15,000 kg, is allowed to coast along a level vfks-l2jawc ;m uat-w o.be +y1776d otrack at a speed of 2.0 m/s. It collides and couples with a 50,000-kg sej6;e2tsulkad.b-7co-ov+f w17w a m ycond 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 negligiblcnlc :fyk/ z24e friction on a horizontal trayk 4 :z2cc/flnck 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 0.80 m/s (with respg bigu7u6p5b:m: q0 gbb uv/f *ix7jf6ect to the log). With what speed does the log move, with respecf 667i:*70 mv: ubqbg gfubjxb5ug pi/t to the shore?

  A 4.0-N force acts for 3.0 s on an object. The force sy;tc6mzn 4 -cdzu9.nkuddenly increases to 15 N ayktnc- 9.n6udmz 4; cznd acts for one more second. What impulse was imparted by these forces to the object?

  A constant 9.0-N net forcemd6yf0 8aqa9we j0xqd7e6 z pw. eve35 acts for 2.0 s on a 6.0-kg object. What is the object's change of veldmqq5 peda0 6v670eewx9 jze38f a w.yocity?

  A 2000-kg car, traveling to the opurv1z w1o1(bxy.g(:.pf tmright at 30 m/s, collides with a brick wall and come m1: p1(b1uo.ftrz.y vwxopg (s to rest in 0.20 s. What is the average force the car exerts on the wall?

  A 2.0-kg softball is pitched *pnqeeh ( dd:8o/2 (brgdk9 dn,jrak8to you at 20 m/s. You hit the 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 d he* 2b8n89dkajrdp,n(:oqedkgr /(is the magnitude of the average force the bat exerted?

  A 0.10-kg ball is dropped os wb ,k/yk qu;.ko6+wanto 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 betweb;uk was/qwo.6y+, kk en 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 50.0-grdwn b, 73xw+f u 6av5gdzjf3g4am bullets, with a muzzle velocity of 750 m/s, at the rate of 300 rounds per miw+fw, 3vz7a5ufb g6j 4 gd3xdnnute. What is the average force exerted on the machine gun mount?

  A fire hose is turned on the door of a burning building in order tle3p k( mpp(7eo knock the door dp l37pme((ekpown. This requires a force of 1000 N. 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 horizontal drainpipe at 2 627ii(fzvj 6ycsey, ez-on ithe rate of 120 kg per minute. It fajyecio v,zy is2e76fi- (6n 2zlls 3.20 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, achieves a vel;* 6nq(ew r*a p10yk(d;i emwu yk4ewcocity of 40 m/s after 3.0 s, when fired straight up. What average thrust force does thenee0 d;w*iqe6a yy 41rpk c(wk(u* wm; rocket engine exert?

  Two astronauts, of masses 60 kg ancxn0oj 66tm (id 80 kg, are initially at rest in outer space. They push each other apart. What is their separation aftem 6 nc0i6(jxtor the lighter astronaut has moved 12 m?

  A 3.0-kg object moves to the right with a speed of 9 qk ep i3a-7oud4cs2w-wyat. 2.0 m/s. It collides in a perf-ik c p2wsq4t 79-u3awe adoy.ectly elastic collision with a 6.0-kg 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 gf0/ po*-xxdma head-on elfx0-ox/* dg mpastic collision with a 0.15 kg object initially at rest. What is the final velocity of the 0.10-kg object after collision?

  A 10.0-g bullet moving at 300 m/s is fired into a 1.00-kg b jrw-w5 t)i,ixlock at rest. The bullet emerges (the bullet does not get embedded in the block) with half of its original speed. What- 5t,wri)ixjw is the velocity of the block right after the collision?

  A proton, of mass m, at rest, is struck head-on q7l+z5c 1zgz. ;osyjeby an alpha-particle (which consists of 2 protons and 2 neutrons)e+51cj z gs.qz;yol7z 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 q:/k keh vo4 h2-asvfty; )(pxcollides head-on with a stationary ball of mass 100 g. The collision is elastic. What is the speed of each 2vt (-hva4h:ek qx f; pkso)y/ball immediately after the collision?

A ball of mass 400 g moving toward the east with a speed of 3.70 m/snlne rqq:/whv. 0q5)c collides head-on wich. q :/q0n)qrwevnl5th 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 colliw3.eoh 4 iti/zdes 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 collth4.izi e/wo 3ision?

  A 2.0-kg mass moving to the east at a speed)im6 p a/q:9fnl-blxm of 4.0 m/s collides head-on in a perfectly inelastic collision with a stationary 2.0-kgp)ibl6qlm9 a:x nfm/- mass. How much kinetic energy is lost during this collision?

  A car of mass m, traveling with a velocity v, stri/d mu (jm+z:c p1f dbtw0fo2d(t51 qbb58zqqzkes 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 lost in this collisionzfb 5c(t p dbqb8: +2w5q1f /uzdq0o (zmtjdm1?

A 15-g bullet traveling 213 m/s in a vertical direction bt n 5b:nc9xau;uries itself in a 2.4-kg blou ca nb:;t5nx9ck of wood a rest directly above 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 9;l7g)fc 3ebsfayo (b,0.0 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 ca(o3)gf;ly ,be bsf7a crs after collision?

  A 1500-kg car traveling at 90.0 km/h east coll1l6/xm sd)wfsdqb 83 m3st+r nides with a 3000-kg car traveling at 60.0 km/h south. The two carsl61dx wsr/qn t8+dm3s) fm3bs 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. Obj81pbmpae y a 7(roayd5-9oz(aect A moves east with a momentum of 24 kgm/s. Object B moves north with momentum 10 kgm/s. Thy1a5ray e pa-a mb8do opz9((7ey make a perfectly inelastic collision. What is the magnitude of their combined momentum after the collision?

  A small bomb, of mass 10 zgp. /zjik ; us6c5cl1uix*m(kg, is moving toward the North with a velocity 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 velocis 1cz6ljumc zkxi.p iu5/;g(*ty of the third fragment? (Neglect air friction.)

  A 4.00-kg mass sits at the orijs- q:y/gvd r2gin, and a 10.0-kg mass sits at x = + 21.0 m. Where is thejyr2: dqv-/gs center of mass on the x-axis?

  The center of mass of a two-particle system is at the ori -gumrqt6(lr ko8 q,v1gin. One particle is located at (3.0 m, 0) and has a mass of 2.0 kg. What is the location of the (m- ,rv 16uqgokrl8qtsecond mass of 3.0 kg?

  Three masses are positioned as follows: 2.0 kg at h- /7 v)ipa+neh5ihfu(0, 0), 2.0 kg at (2.0, 0), and 4.0 kg at (2.0, 1.0)hhiua f 5-/7hvi +npe). Determine the coordinates of the center of mass.

  Three masses, 1.0 kgxyjtekv ..0( hx+,bua/ ylx2 nc.-tun, 2.0 kg, and 3.0 kg, are located at (0, 0), (1.0 m, 1.0 m), and (2.0 m, -2.0 m), respectively. What is the locaticxt v.(nhy l-k, etbjnyuu.+x/ a.0 2xon 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 positioned a,4 xs4o,5zp3qp,xmmko czi*t8 xac-kg iy.g6t (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 atoko.4ampm *xyx g6t 4,pk,3i s,zxigcq -85zc the origin, (0, 0)?

  Use Table 7-1 to calculate the position of the CM of a whole lejl;oe+m6rda ulior6) jl.(gc )ey+ 7zg including the foot when the leg is stretched straigauelz);gdl)j mrr.+ oj o6lei +6(c7yht out. Assume the person is 1.60 m tall.