What is the SI unit of momen o(z wai45n9oftum?

  When a cannon fires a cannonball, the cannon will recoil backward be 4xkoi/ gpi29;pxv* fecause the

  A freight car moves along a frictionless level railroad tran ac1 7iwl.vj /r-,rjbck at constant speed. The car is open on top. A large load of coal is suddenly dumped7l-,aiv/r1 cb.j njr w into the car. What happens to the velocity of the car?

  A child falls sideways off a sled while sledd(frl*nq y 5 z1z(qud-9dhqvn6ing on frictionless ice. What happens to the velocity of the sled?*qd lz9qudvn1(y6 nzh rf-q(5

  A rubber ball and a lump of putty have equal mass. They are thrown with eqne)5u *n0zxqljlj of0 g7s w,8ual speed against a wall. The ball bounces back with nearly the same speed with which it hit. The putty sticks to the wall. Which objectsweu0s8)njxn 05 *zo7l jgfl q, experiences the greater momentum change?

  A sailboat of mass m is moving with a momentum p. Homf8 2c nj xba/v de.eo.9q5d-fw would you represent its kinetic ener.d 9-mxcod/8qjv ean bf5e2 .fgy in terms of these two quantities?

  If you pitch a baseball with twice the kipk (1t*hmu+m4li. yncnetic energy you gave it in the previous pitch, the magnitudk*.u+y(phtcm1m 4lni e of its momentum is

State Newton's second law in te5k(dfs(xpvay2 ts r:q*y. ewm6( .tdarms of momentum.

State the law of conservadfq9uxmj is -zr;*eseuy6uk6yc +;9 7tion of momentum.

  The area under the curve on a F1 s u 37ljyawb ()58innl8foxporce versus time (F vs. t) graph represents

  Which of the following is an axi6 at 4+lkhr+ccurate statement?

  A small car meshes with a large truck rb exq;7 *aa5r qb/ jz )ys+spe1hb7d+in a head-on collision. Which of the following statements concerning the maga+/ q;hbyea1b r 7pq x5 dss)7jz*er+bnitude of the average collision force is correct?

  Two equal mass balls (one red and the oroy2p1qb -s 0other 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 collisi2srbyqo p -10oon with the floor?

  A Ping-Pong ball moving east at a speed of 4 m/s, colg3ugw,8l l9snlides with a stationary bowling ball.uwn sg8,9g3 ll The Ping-Pong ball bounces back 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. Linear momentuj(m6c29r p (k9shzlrrm

  A 3.0-kg object moves to the right at*88qxs(ry toir ds*w + 4.0 m/s. It collides head-on with a 6.0-kg object moving to the left at 2.0 m/s.*rxsyo*8 dq+i8t rws( Which statement is correct?

  A 100-kg football linebacker moving at 2.0 m/oym;ebm 5a+ /vs tackles head-on an 80-kg halfback runni+m om5b/;evay ng
3.1 m/s. Neglecting the effects due to digging in of cleats,

  In an elastic collision, if the momentum is conserved, txd;7)4+es6lq mly+2ogb ml thhen which of the following sta2 ldsqt7gl )oxb 4em6m+hy;l+tements is true about kinetic energy?

  When is kinetic energy consebu0l ve g6 ui80p/pgme6i b)o9rved?

  In a game of pool, the white cue ball hits the #5 ball and s 9.9t1jebelmetops, while the #5 ball moves away with the same velocity as the cue ball had originally. The type ofl .9e19 etmjbe collision is

  When a light beach ball rolling lp*w/w nif0a3e+ur8b6wgsqpi qe8;+with a speed of 6.0 m/s collides with a heavy exercise ball at rest, the beach ball's speed after the collision will be, approxer6; 0wwqp+sw8ba q+f/8* epiun gli3imately,

  A golf ball traveling 3.0 m/s to the right collides in a head-on y 8 (o*sk,e bbeq*5: ekvu1zqkcollision with a stationary bowling ball in a friction-free environment. If the collision is almost perfectly elastic, the speed of the golf ball immediately after theqvy:bo1e *k58buqes*z e(k,k collision is

  A rubber ball with a speed of 5.0 m/s collides head-on elastically with ar0d0 avjfr*disx,9 6qn identxr6qrjv 0 d,*dis 09faical ball at rest. What is the speed of the initially stopped ball after the collision?

  A very heavy object moving nu 5:cccik* 6 *sbeu:jwith 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: n*cb5iekus:cc*j 6u the speed of the light object after the collision?

  A very light object moving with speed v (jx3k g bs3)yvcollides head-on with a very heavy object at rest, in a frictionless environment. The collision is almost perfectlyb)xyg3k ( 3jsv elastic. The speed of the heavy object after the collision is

  A red ball with a velocity of +3.0 m/s collides headcinp pm ,34sej2 j*dm*-on with a yellow ball of equal mass moving with a ve2*nijp3p*e4m m, djsclocity of -2.0 m/s. What is the velocity of the yellow ball after the collision?

  A very heavy object moving with velocity v collides head-on with a very light osro5;y -qyn2 m*+jf apbject moving with velocity -v. The collision is elastic, and there is no friction. The heavy object bj nsrp 5;ay+-moqf2*yarely slows down. What is the speed of the light object after the collision?

  In an inelastic collision, if the momentum is conserved, qqhwn2ec ny c61nj0)- then which of the following statements is true about kine)6- h0cqe n jnc2nwq1ytic energy?

  Two objects collide and sajx -kq0:fv1k dz 83r7dxk8 jetick together. Kinetic energy

  A 3.0-kg object moves to the right apw8rd 5 qhy g(3,c xdsda-/f7pt 4.0 m/s. It collides in a perfectly inelastic coaf,q r/ wp5hsx7 d(gd3 c-y8pdllision 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 0 zpk ,5nszn.gsticks. Which object experiences the larger ma0n p,zz gs5n.kgnitude of momentum change?

  In a game of pool, the white cue ball hits the #9 ball and is deflecte1r wogqks:vioq-.q0ona,/ do/,wp2 l d 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 akybn1za ,fbz+ * 7,jwfnd m. Which of the following statements is false?nzb*1 ,+ bzykfw jf,7a

  Which of the following is a f-uq ( vo4 tmnv3yno*m*alse statement?

  Tightrope walkers walk with a long fxj+/8f7,m w/-hjb qjrmy cl 4clexible rod in order to

  A plane, flying horizontalqw8ru)k l/ / vhs;s7za5pbb.tly, releases a bomb, which explodes before hitting the ground. Neglecting air resistance, the center of mass of the bomb fra8 t/ 5aqh7 blpubvrksw;/ sz).gments, just after the explosion

  Two cars collide head-on on a level friction-free road. The collision was cl u+9wyb 1a8plompletely inelastic and both cars quickly came to rest during the collision. 91aw8+ylplbu What is true about the velocity of this system's center of mass?

State Newton's second law for a system of particlesrjb2oqn: 2i/hew-1qd(v nw 0r.

  What is the momentum of a 2000-kg truck traveling at 35 mo9y /;weje* -a dbzh4f lnd:8t/s?

  A 1200-kg ferryboat is moving south at 20 m/s. What is the magnitude8z0c fdmp/6b,p . r4twr6ex bw of its momentr z66,e bb dw8rp0pw mf/x.c4tum?

  A ball of mass 0.10 kg is dropped fromad8yq *;xl j9k a height of 12 m. Its momentum when it strikes t qdj x9ykal8;*he ground is

  Two identical 1500-kg cars are moving perpendicular te8xefm926 n uvo each other. One moves with a speed of 25 m/s due north and the other moves at 15 m/s due east. Whatv6n8 m x2fuee9 is the total momentum of the system?

  A handball of mass 0.10 kg, traveling horizontqx 0g(fwmpmn/ 7,fj2h1 zsh 3bally at 30 m/s, strikes a wall and rebounds at 24 m/s. g( hqw f02h,n3/x mf7jzs1pmb What is the change in the momentum of the ball?

  A 0.060-kg tennis ball, initially moving at a /ve izviwfk+3 )x9lj(cp w.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 the changek3 +i ejxiz(9fv.lww)- vc pa/ in momentum of the ball?

  A 50-kg pitching machine (excluding the baseball) is placed on a frozen pond.x hzp:7pi wl. 4*6uvfk 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 neglig z xfv:p wi*6hu4.7pklible friction.)

  A 70-kg astronaut is space-walking outside the space capsully)r-b4+r /gkl uaprn,p nn,7 e 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 lr 4a)p-un+pr,r/ gk7yl b,n nfrom 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 l m)a-4n+ nuiqyarge object at rest. The small object bounces straight back with a momentum of magnitude 4.0 kgm/s. nq4-ia)um yn + 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 your friend (40-kg mass), ;/ujmhw d +xhp-q0: fpwho is standijfx u dq-+:wpp0hh;/mng still, with open arms. As you collide, while holding each other, with what speed do you both move off together?

  A car of mass 1000 kg moves to the right along 5c lb/)bsm q-p0vl2cr a level, straight road at a speed of 6.0 m/s. It com2) s cbp-0lrqlcbv5/llides directly with a stopped motorcycle of mass 200 kg. What is the total momentum after the collision?

  A 1000-kg car travelg)hbr 0 dcnr au+g*1y)ing at 25 m/s runs into the rear of a stopped car that has a mass of 1500 kg anyd r1ghbr0*u+g) c)and they stick together. What is the speed of the cars after the collision?

  A railroad freight car, mmht o6 t/-t 5i.iw8udpass 15,000 kg, is allowed to 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 b.t i6-ht8 uom/wdp t5irakes released. What is the speed of the two cars after coupling?

  A railroad car, of mass 200 kg, rolls with negligible friction/ 4 1* ggibv,e kxx),03mw7tcousoztf on a horizontal track with a speed of 10 m/s. A 70-kgm03fbwg vcxt o*,t,7zgiso)4/ 1xku e 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 respect to y6h 7; zs (cpqe12 wgwxlnho48the log). With what speed does the log move, with respecxq 6 ecy82h71z4hgwwnop sl(;t to the shore?

  A 4.0-N force acts for 3.0 s on an object. a f/rc443l 9r27pvqnjjc. ontThe force suddenly increases to 15 N arnactc 3r4f2v9p/jn7 j4o q.lnd acts for one more second. What impulse was imparted by these forces to the object?

  A constant 9.0-N net force acts forq y/xo j4r03yoqc:0vm f*cmg;1xzd;l 2.0 s on a 6.0-kg object. What is the object's cc0zq3 j mx*o0;: qrvfyl4cx doygm;1/ hange of velocity?

  A 2000-kg car, traveling to the right at 30 m/s, collides with a brickw5 a:y5ym.-o7g3q.ykgba3 t8b dxhc95 to wbm wall and comes to rest in 0.20 s. Wkqwgxt 7 -.5cmybot3bamowy agy bh :9385d5. hat 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 the ball bac9vo)/,yyvcpe 3d i: hmk along the same path, and at the same speed. If the bat was in contact 9yiyv):hcod,e 3v/ mpwith the ball for 0.10 s, what is the magnitude of the average force the bat exerted?

  A 0.10-kg ball is droppw5u-oqc:5: cwuh k6bied onto 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 between the ball and the table top lasts 0.15 s, what is the m:k -wu6obhui:qc5c5w agnitude of the average force exerted on the ball by the table top?

  A machine gun, of mass 35. .phj(xnk:h8l 0 kg, fires 50.0-gram bullets, with a muzzle velocity of 750 m/s, at the rate of 300 rounds per minute. What is thp(.jn 8hlkh :xe average force exerted on the machine gun mount?

  A fire hose is turned on the door of agcqs:t .3b.gk burning building in order to knock the door down. This requires a force of 1000tkg q b:.sg3.c 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 the rate of 120 kg per minukd9d: .oy7lkr cc:ul;te. It falls 3.20 m to the ground. Assuming the water doesn't splash up, what average force doec7kdo;ycku lr .l:9:ds it exert on the ground?

  A toy rocket, of mass 0.12 kg, achieves a velocity of 40efz 41pf.dt5* (br52x jgedir m/s after 3.0 s, when fired straight up. What ave p 5xdze.i( r*jd1eff4gb t25rrage thrust force does the rocket engine exert?

  Two astronauts, of masses 60 kg and 80 kg, are initially at rest hj , o a)f.sik-ktc1y12l*uodin outer space. They push each othikok2as du tl,)-c.fo *hyj11er apart. What is their separation after the lighter astronaut has moved 12 m?

  A 3.0-kg object moves to th+(qh+84xi.r xrw.z mu +shq qie right with a speed of 2.0 m/s. It collides in a perfectlyz4ix r+8 ixm .+huwr(.hqqq+s 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 t(hx4v*zrm, z +x direction makes a head-on elastic collision with a 0.15 kg object initially at rest. What is the finamxvt(4zhz,* rl 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 bl m00i qyr9;42ilkzdz91aqo6gg r9s dhock at rest. The bullet emerges (the bullet does not get embedded in the block) wia4i9rz m0ls9 0kq1;gy92didrg h 6qzoth half of its original speed. What is the velocity of the block right after the collision?

  A proton, of mass m, at r8 hrz6iu3*r)iyq;xq7t* igwdest, is struck head-on by an alpha-particle (which consists of 2 protons and 2 neutronsuyi ) ; *z*3q7g iirqwd8hr6tx) 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 with a stationary -4t .ml*g0o7f wq+)dyohhx qr ball of mass 100 g. The collision isw.fh*-gxrhq)+md4 toq7o 0y l elastic. What is the speed of each ball immediately after the collision?

A ball of mass 400 g mob/0qnxt uy(b7w0oc5 /5vf 3wq -zixo yving toward the east with a speed of 3.70 m/s collides head-on with a b0ycx 3ubq0 wxtfi /z/w5oy 7n(ov5q-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 a7nz(6w mx6u)no2rov f speed of 5.0 m/s. 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 afterrfn) 6n(zwvm67 2ouox the collision?

  A 2.0-kg mass moving to the east at a speed of 4.0 m/s colli+zdxyeb / qxe.(-9( ilq(jioades head-on in a perfectly inelastic collii9eqq-+b l (( .d(/ji ezxxyoasion 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,)qy;c , y5p6keh ypeyagi 2d8. strikes a parked station wagon, who's mass is 2m. The bumpers lock together in this head5p ;e 8ydq)kp2gc,y.yhi e6ya -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 verx3m:(j1rkk7p-jy. kkbfb 0zstical direction buries itself in a 2.4-kg block ofj7(0z1y 3rkm jkb-.kpb x:ksf 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 90.0 km/dqp 8 rwp:/3z amc5vrvqtdr27w d4n9-h east collides with a 3000-kg car traveling at 60.0 km/h south. The two cars stick togethm9r p-vqcnt8:74 /d 2pqdz5 dw rawvr3er after the collision. (See Fig. 7-1.) What is the speed of the cars after collision?

  A 1500-kg car traveling at 90.0 kj)g iv kfaxgwi9/j z 0.pa/-g3xnd/ ,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. 7jdn.zkxw-pavii9kgg/ g), j0 3 fxa//-1.) What is the direction of motion of the cars after collision?

  Two objects move on a level frictionless surfacel4;k / rs-qg /e(fwgif. 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 their combined momentum after the collisfk4 (; iw-qfelg/r /sgion?

  A small bomb, of massosmda(drb52u;1o i0 tiux; 0w 10 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 wi;x iasu0bu( o5mr0i1d ;tod2 wth 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 14aetq5sy/0;g ix:yj3e yga rg* d,ym/0.0-kg mass sits at x = + 21.0 m. Where is e 50qairg*y :ysjtxe,gadg;ym/y 34/ the center of mass on the x-axis?

  The center of mass of a two-particle system is at tw w0hp,xg -rk2j do n-3.,gsmyhe origin. One particle is locn.p-y -oj rhw,g3wxd0g2 sm,kated at (3.0 m, 0) and has a mass of 2.0 kg. What is the location of the second mass of 3.0 kg?

  Three masses are positioned as follows: 2.0 kg atz,et*ckj9 aq ,d4 vp1f (0, 0), 2.0 kg at (2.0, 0), and 4.0 kg at (2.0, 1.0). Determine the coordinates of the4q p*,, vt1cjdafe9zk center of mass.

  Three masses, 1.0 kg, 2.0 kg, and 3.0 km7o +p7sr/rvsp jqb+dj:*r:t gew -n5g, are located at (0, 0), (1.0 m, 1.0 m), and (2.0 m, -2.0 m), respectively. What is the location of the cent ssr +d7 gn+tvj:/ :opjmrpwre*-5q7ber of mass of the system?

  A 3.0-kg mass is positioned at (0, 8. *cnq z 17 usmbraiwk8ez2+0la 7ode560), and a 1.0-kg mass is positioned at (12, 0). What are the coordinates of a 4.0-kg mass which 5skewor z08+a7a n iblu z26d*1 qem7cwill result in the center of mass of the system of three masses being located at the origin, (0, 0)?

  Use Table 7-1 to calculate the position of the CM oxm 5rqe b(6:s5/)0xlfh 6fygkb* fq jff a whole leg including the foot when the l5:hff xm*x0g56f sbe)q6fkjrl ( qy/beg is stretched straight out. Assume the person is 1.60 m tall.