What is the SI unit of mo;n; qkd;a,ve cmentum?

  When a cannon fires a cannonball, the cannon will recoil backward because seylzz 8(jw 2 z l4awy(9p8,odthe

  A freight car moves along a frictionlessb :t r-lu;0uaiet(ub; level railroad track at constant speed. The car is open on top. A lrb:ib;(-l uua0 ;tetuarge load of coal is suddenly dumped into the car. What happens to the velocity of the car?

  A child falls sideways off a sled while )x5 2 -2ofz 2ro7vrmgj/ ufh,:jmv mhisledding on frictionless ice. What happens to the velo 2xz2 jfmim7o/h o) -ur2,r5fm:jgvvh city of the sled?

  A rubber ball and a lump of putty6ulwd (9wgyu6y67p w h 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 objects experiences the greater momen79y66 wdww 6uuhpl(yg tum change?

  A sailboat of mass m is mov7ugy1be-* h7xcpoh:qwb /4r ring with a momentum p. How would you represent its kinetic energy in terms of these tr:y*cgh7bxqr-w7 h 4/1p ubeowo quantities?

  If you pitch a baseball with twiceob suy o50d/k0 the kinetic energy you gave it in the previous pitch, the maso /d 05okybu0gnitude of its momentum is

State Newton's second law in terms of mom46+ri+kyrneunds4y1+ )bcasuhev y; 5e7 li +entum.

State the law of conservation ofg5mnc eksc z0gh82qrt*0; c0v momentum.

  The area under the curve on a Force versus time (F vs. t) graph representx;f3/4 f9yen jrlh m*gs

  Which of the following is an accurate sz2enh2gnkd h t5)y ;6l w7js(rtatement?

  A small car meshes with a larm,hoscsq-+jd l 5r2e+ ge truck in a head-on collision. Which of the followideh mcl+ojs+qsr5 2-, ng statements concerning the magnitude of the average collision force is correct?

  Two equal mass balls (one red and the other blue) r5yt2of ce9rfb2ib6k ;7;mu ware dropped from the same height, and rebound off the floor. The red ball rebounds to a higher position. Which ball is subjected tofk7b6i2yf9m ru tw2b;ore c 5; the greater magnitude of impulse during its collision with the floor?

  A Ping-Pong ball moving east at a speed of 4 m/s, collides with a stationary boh)l*ej6,e gbtroa0ykx3 l)h ,+ m(ty dwling ball. The Ping-Pong ball bounces back to the west, and the bowling ball moves very slowly to the east. Which object experiences the greaterko)0y +,)bl j6hy,* (egtr3h temxdla magnitude impulse during the collision?

  Two objects collide and bounce off each other. Lindn* oyfj:y,(qzdb -p/;tp8 u d4;w fciear momentum

  A 3.0-kg object moves to the right at 4.0 m/s. mn:gp)-pkaz: It collides head-on with a 6.0-kg object moving to the left at 2.0 m/s. Which- mp)pzn: agk: statement is correct?

  A 100-kg football linebacker moving at 2.0 m/s tackles head-on an 8g2h; 1+ -r7d r8tsyndi3zplvo1ue;ml 0-kg halfback ru32d1nrge +u8;;-s d1 rh7ipzlltvoy mnning
3.1 m/s. Neglecting the effects due to digging in of cleats,

  In an elastic collision, if the momentum is conse5 mi qgy0 p+qtz4,hib7rved, then which of the following statements is true about kinetic enebqm+ 5 7hiz0yp q,igt4rgy?

  When is kinetic energy conservem. rhn 2zigv/95eyq*3 0rknnvd?

  In a game of pool, the white cue ball hits the #5 ball and st ts t9d37uob9mqwy ld5zi. e37ops, while the #5 ball moves away with the same velocity as the cue ball had originally. The type of collision i3 9sw ezd .yt7tlqod3ib9um75s

  When a light beach ball rolling with a speed 4s9 ;bdr6pna)b yrb k,of 6.0 m/s collides with a heavy exercise ball at rest, the beach bb)6 drskb4ya p;r9bn,all's speed after the collision will be, approximately,

  A golf ball traveling 3.0 m/s to the right collides in a head-w c, jxf3d1,wc e :mvpt8.1v3vjvjwb g 7np(m/on collision with a stationary bowling ball in a friction-free environment. If the collision is almost perfect wcb3: dxw v p,7c8(fj em/jv3p .vjnw11tm,gvly 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 idej3kxxxs i dgm i43 h) ,qfey(5bj:/a0lntical ball at rest. What is the speed of the initially stopped ball afterexhi3jx:ksj) gqm d5b y4 f ilxa/,(03 the collision?

  A very heavy object moving with speed v collides head-on with a very ligu c6 s*23lizpyfuf/g 6ht object / glf6iz*2y6fu 3p csuat 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 collision?

  A very light object moving with speed v v qcj)h-p+n,vmd60il k0imn9 collides head-on with a very heavy object at rest, in a frictionless environment. The collision is almost perfectly en ) 09mijmcv-i n, lkvp0hq6+dlastic. The speed of the heavy object after the collision is

  A red ball with a velocl( odwo ,09o)br wpwj, )t)ppaity 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 the,))tb(w0 j rpdloow9a opp,w) velocity of the yellow ball after the collision?

  A very heavy object movingyl ,5a09uybu lr*h*uh 2j6j 9w j*u9vz7w ttbo with velocity v collides head-on with a very light object moving with velocity -v. The collision is elastic, and ther j* 2zyuw*979*r9lubjt5lyh wuj bu0 at6ov,he is no friction. 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 c+yi2zxc(z w n)78meq the following statements is true about kinetic energiwy)z2xq+zm 78c c( eny?

  Two objects collide and stick together. Kinetic energ.yr8 lwru 05yjy

  A 3.0-kg object moves to the right at 4.0 m/s. 6bb clas (*i57hbj owu99mf:r It collides in a perfectly inela 5 hrbua97c*jml:6 soifbwb(9 stic 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 experienfkv-3 ncoxyyb d72/*eces the larger magnitude *7-2dxvknb cy3/yf eoof momentum change?

  In a game of pool, the white cue ball hits the #9 ball and is 1bx6mba ); x: layl.vva-p/jc 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 mapx9ro, ;rnyo+3bammwl*vc- 9sses, M and m. Which of the following statements is false?r nl*a9-;p3rm cbo9owvmx +y,

  Which of the following is a falsel-u, )1) q ul9x2m n+kjqulhn 5q,cmji statement?

  Tightrope walkers walk with a long 9tzmnv)5;g03urs6hims 9r e w i:c(seflexible rod in order to

  A plane, flying horizontally, rele*hno. :bfp v.gases a bomb, which explodes before hitting the ground. Neglecfgpvb.*h .n o:ting air resistance, the center of mass of the bomb fragments, just after the explosion

  Two cars collide head-on on a levekqq7 l 0uoxhu)eo3l0zee z/ s.*- f(nzl friction-free road. The collision was completely inelastic and both cars quicklyzkq07-ue 0lqzuonf)els./ e3 (* hxzo came to rest during the collision. What is true about the velocity of this system's center of mass?

State Newton's second law for a d j38-mlew*u chl5*e psystem of particles.

  What is the momentum of a 2000-kg truck travel3m4i40ynmtoetsq u ( 5ing at 35 m/s?

  A 1200-kg ferryboat is moving south at 20 m/s. What is the maguwh h va-8q8f7nitude of its momentuuw haf 8h8-7vqm?

  A ball of mass 0.10 kg is dropped from a height kvh)9 jbckpo/75rv+cof 12 m. Its momentum when it strikes the ground i+ )k9rpbkvj7c vh/ oc5s

  Two identical 1500-kg cars are moving perpendtj8e vo3mtbg: a *a*t8icular to each other. One moves with a speed of 25 m/s due north and the other moves at 15 m/s due easgt *8 *tjo38a:atbevmt. What is the total momentum of the system?

  A handball of mass 0.10 kg, traveling horizontally at 30 m/s, strikes a wm fyfg.5q( ku,0pax;ze*9 p lmall and rebounds at 24 m/s. What is the change in the momentum of tgqkafmup y9m f xpe .;,5*0(lzhe ball?

  A 0.060-kg tennis ball, initially moving k1*m4tj1vz 4nm1yrv dat a speed of 12 m/s, is struck by a racket causing it to rebound in the opposite direction at a speed of 18 m/s. What is th4mmv14 zdyv1*t 1kjrn e change in momentum of the ball?

  A 50-kg pitching machine (excluding th exxa pefzgc)8*r+*,aty k/off )w0* ve 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 reco )fw,e pzgfa+*ke cf *r*y)0vxxta o8/il speed of the pitching machine? (Assume negligible friction.)

  A 70-kg astronaut is space-walking outside the space capsule andbk /x /zc,k+ya is stationary when ka/ bcxz+,/ky 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 capsule?

  A small object with momentum 5.0 kgm/s approaches head-on a large +; 0cnrprr5*)ws ivfu object at rest. The small object bounces straight back with a momentum of magnitude 4.0 kgm/s. What is the mfr +rri;v*)p nw0cs5 uagnitude of the large object's momentum change?

  You (50-kg mass) skate on ice at 4.0 m/s to greet your friend (40-kg mass)0wfwf2r , ynwmdu/;ht77eju m t9t3d4, who is standing still, with open arms. As you collide, while holding each efjt9h fdd 7tw u0wry3mwt/72 ,un;4mother, with what speed do you both move off together?

  A car of mass 1000 kg moves to the right along a level, straigr 7)tx5gq am4d7qc5qx4tnds6 ht road at a speed of 6.0 m/s. It collides directly with a stopped mo6xa5)crxnd mqsd g5q tt447q7torcycle of mass 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 stopped car that -urafr .ijr /5has a mass of 1500 kg and they stick together. u j/rfr ir.a-5What is the speed of the cars after the collision?

  A railroad freight car, mass 15,000 kg, is allowed to coast along a level tra a5jzju;loqe.ku09*a wfxn;zj y5;j 3ck at a speed of 2.0 m/s. It collides and couples with a 50,000-kg second car, initially at rest and with brakes5 aj35 *;n oj9uf0a zkyex;;u.jwzjql released. What is the speed of the two cars after coupling?

  A railroad car, of mi-7 8+3pommalhyf a +sass 200 kg, rolls with negligible friction on a horizontal track with a speed of 10 m/s. A+ma8pl +37-iy hsafmo 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 di -rx s/9rfy0respect to the log). With what speed does the log move, with respect to the 9df-x0 sy/r rishore?

  A 4.0-N force acts for 3.0 s on an object. The fog3 g63h9my xlur *)vzdrce suddenly increases to 15 N and acts for one more second. What impulse was imparted by the*ymrl93u3h)gdzvx g 6 se forces to the object?

  A constant 9.0-N net force actszu r jfi:h69.hm6xgdc 9taq +jl;-g;t for 2.0 s on a 6.0-kg object. What is the object'z6-ig:hj9c m;jrt.fdx;gl 9tu hq+a6s change of velocity?

  A 2000-kg car, traveling to the right at 30 m/s, collh9g (sh mx)wi:ides with a brick wall and comes to rest in 0.20 s. What is the averhs:wh m9)i(x gage force the car exerts on the wall?

  A 2.0-kg softball is pix -6b9+okj naitched to you at 20 m/s. You hit the ball back along the same path, and at a-9n6 i+bokjxthe same speed. If the bat was 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 drop: j/ (p g/y09jutbe kdctvnx/0g(fm2qped onto a table top. The speeds of the ball right before and right after hitting the table top are 5.0 m/s9xkbt: /cn(0d0p ge mf/2jv(u qy gt/j 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.oq z. k 6fbf6 ,zmdwg9-i3k*ob0 kg, fires 50.0-gram bullets, with a muzzle velocity of 750 m/s, at the rate of 300 rounds per minute. What is the average force exerted on the machine gun mou3o *gb 6wbfimfdz6qo -k.9, zknt?

  A fire hose is turned on the door of a burning building in order to knock1l fbd mm 5.x*oc)o6mv 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 stream neex1 o omcb5v*6mfm)ld .ded, assuming the water doesn't bounce back?

  Water runs out of a horizontal drainpipe at the rate of 120 kgq ;m 7p4co kzt,huo::uct0,ce per minute. It falls 3.20 m to the ground. Assuming the water doesn't splash up, what average force doest tc, ,4c:upuh e7 kc;qozo:m0 it exert on the ground?

  A toy rocket, of mass 0.12 kg, achieves a velocity of 40 g8++ ,rmklnsp m/s after 3.0 s, when fg+ms+ ,lpkrn8ired straight up. What average thrust force does the rocket engine exert?

  Two astronauts, of masses 60 kg and 80 kg, are initially at rest in outer space5dbpbn nm 0/nd1qs5z q5:zkn8. They push each other apart. What is their separation after d5 qd0kqs :pnn 5n/bmb51zz8nthe lighter astronaut has moved 12 m?

  A 3.0-kg object moves8vbkvo96;li o85xhjd 2avds8 p).s iw to the right with a speed of 2.0 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 thk8;x ivs)oj8 a25v8opd wi.l9dshb6 ve total kinetic energy after the collision?

  A 0.10-kg object witl zgdw,m58x)kxa1qk 6t .r9 dqh a velocity of 0.20 m/s in the +x direction makes a head-on elastic co)lm8,rq5x9 d1dx 6q k wkg.zatllision 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 vq*hzsv2i*.d-pym eszw 4i2 3-kg block at rest. The bullet emerges (the bullet does not get wz4z*vq v m i.h*seyi2ps2 d3-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, c em/cjui ,;-iat rest, is struck head-on by an alpha-particle (which consists of 2 pr -j;/mu, ciceiotons 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/s collides head-on witg comhmu)8w) y6oh4 w.o4ns o.h a stationary ball of mass 100 g. The collision is elastic. What is the speed of e8w4c.n)) sou.6hyomg o4h mowach ball immediately after the collision?

A ball of mass 400 gh)t5 nyprz;fj a1 *g*y moving toward the east with a speed of 3.70 m/s collides head-on with a 200 g ball sitting at rest.;*1tfgpnj5a*)yyr hz 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 colr x,.u6na6wtfzu4;xaw/apqb ,zf e5 +lides head-on with a 3.0 kg mass at rest. If the collision is perfectly inelastic, what is the speed of the masses after uazbaf6qtp,r5 wwn,f+6ea.z;x ux4 / the collision?

  A 2.0-kg mass moving to the uq ge v+n 3d2fuxdmz7/my6*iv:k0ss 8 east at a speed of 4.0 m/s collides head-on in a perfectly inelastic c+m23fv* yq u7us /isxd:nk8m0 g6z devollision with a stationary 2.0-kg mass. How much kinetic energy is lost during this collision?

  A car of mass m, traveling with a veloci a lk 5l8(mn t3hm1lj9hekd:b*ty v, strikes a parked station wagon, who's ma9a3 5l1:hlbdh k(km n8j te*lmss is 2m. The bumpers lock together in this head-on inelastic collision. What fraction of the initial kinetic energy is lost in this collision?

A 15-g bullet traveling 213 m/s in a vertical direction buries itself in a 2.4-7 1r, bw (ogoe/dly:jakg block of woodl roe,:jw y/o7d (bg1a 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 traveli+d,v4)l zhl mlil0 4sxng at 90.0 km/h east collides with a 3000-kg car traveling at 60.0 k0l),+mxl l4 z4vdh islm/h south. The two cars stick together after the collision. (See Fig. 7-1.) What is the speed of the cars after collision?

  A 1500-kg car travelzehx/(1il8 po ing at 90.0 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 direction of motion of the cars afterezph oil (x81/ collision?

  Two objects move on a level fric jx8 9vx4hff+ytionless surface. Object A moves east with a momentum of 24 kgm/s. Object B moves nox9 v+ j8fh4fxyrth 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 4.0 d; jpdz*l*k .km/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 kj.ld k pzd;**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 originfchuq7v(i p7+ , and a 10.0-kg mass sits at x = + 21.0 m. Where is the center of mass on thehf uc+7(7qvpi x-axis?

  The center of mass of a two-parttxa5yu1 b 3tu0 h4fq*cicle 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 mass of 3.0 ftu 5xcb0u 1h*4ayqt3kg?

  Three masses are positioned as follows: 2.0 kg at (0, 0), 2.0 kg at (2.0,rx6; l9k;t qys 0), and 4.0 kg at (2.0, 1.0). Determine the coordinates of the centeq rl; 6kts;x9yr of mass.

  Three masses, 1.0 kg, 2.0 kg, and 3.0 kg, are located at (0, 0), (1cly b)b2)5- n /nmnzvx.0 m, 1.0 m), and (2.0 m, -2.0 m), respectively. What is the location of the center of mascvy) zb/m5nnbx )2n-l s of the system?

  A 3.0-kg mass is positioned atcon0 7 gb19:p7kdyhxogb8 7mu (0, 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 massm1: 7gu 7bkbxygh7dn9pco 08oes being located at the origin, (0, 0)?

  Use Table 7-1 to calculate the position of sxv 2,- zih z,p7tj:yvthe CM of a whole leg including the foot when th,xy pvi szhj,z:-72tve leg is stretched straight out. Assume the person is 1.60 m tall.