What is the SI unit of momeu21v(ezi; efew3l -h j.k7btm ntum?

  When a cannon fires a cannonball, the cannon will recoil back a01;r+ rnrepbku0/ y5fxl- inbjwz 30ward because the

  A freight car moves along a frii ef va 4+rngs*q./pihgtrx, j38d42v ctionless level railroad track at constant speed. The car is open on top. A large load of coal is suddenly dumped into+8 4sdifxp t qr*nvjghaiev4/ g 32.,r the car. What happens to the velocity of the car?

  A child falls sideways off a sled while sleddurdnl kx on*t(47vfihb8-c61ing on frictionless ice. What happensl kc r(-tndiv*nf1uo6x h74b8 to the velocity of the sled?

  A rubber ball and a lump of putty have equal mass. They are thrown withie:rmg1mz5t3.s 0 z t7hi 5jxb 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 objec7s: 10h5xe.i gimt5rjtmzb z3ts experiences the greater momentum change?

  A sailboat of mass m is moving with a momentum p. How would you represendp u:3n8 vsre5t its kinetic energy in terms of these two quantdpse5r3nv: 8uities?

  If you pitch a baseball with twice the kinetic energy you gave it in the pr+4yjubv;jrc1 evious pitch, the magnitude of its moj 1jv4cuy+br; mentum is

State Newton's second law in terms o-dghi * lyw a0/tdz;d3yak m3e;5jk 8sld1ni9f momentum.

State the law of conservation of momentu krl/l;+nefn,m.

  The area under the curve on a Force versus time (F vs. t) graph rrem erjfg9:(,d3bj x 9i5e:vt epresents

  Which of the followinh1wip acw:i t0c4(:fyg is an accurate statement?

  A small car meshes with a large truck in a headtjc :y279b/udohv6f61pj ubu -on collision. Which of the following statements concerning the magnituv d t:c1jh9 b6ou6ujuf2/ p7byde of the average collision force is correct?

  Two equal mass balls (one red and the other blue) are droppjrf ,:a 8o(tvded from the same height, and rebound off the floor. The red ball rebounds to a higher position. Which ball is subjected to t 8vfj( tr,dao:he greater magnitude of impulse during its collision with the floor?

  A Ping-Pong ball movr v.,wv5bj6 jding east at a speed of 4 m/s, collides with a stationary bowling ball. The Ping-Pong ball bounces back to the west, and the bovwv6,5bj .rdjwling 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. / wl+ufooqab0fm5z*crri 6:r t)3p(x Linear momentum

  A 3.0-kg object moves to the right at 4.0 m/s. It collides head-on.;(bam l jmnu5e3. hfv with a 6.0-kg object moving to t m. nuhajem .5bl;vf3(he left at 2.0 m/s. Which statement is correct?

  A 100-kg football linebacker moving at nr 2hr(ib+p,cci*iw ;2.0 m/s tackles head-on an 80-kg halfback rr rcci h(;,inipb +*2wunning
3.1 m/s. Neglecting the effects due to digging in of cleats,

  In an elastic collision, if the momentum is conseb 07)ha i(gwk8r;w hz8m:nb nprved, then which of the following statements is truei z n8b:bhamrw)8kwg( ;np7h 0 about kinetic energy?

  When is kinetic energy cons*l 3wl6yg*yu cd9 zr4uerved?

  In a game of pool, the white cue ball hits the #5 ball and stops, while tg54z fdm(b 4olhe #5 ball moves away with the same velocity as the d( bz4mlg45focue ball had originally. The type of collision is

  When a light beach ball rolling with a speed of 6.0 m/s collides wit4,4mles 5dueo1dww 6lh a heavy exercise ball at rest, the beach ball's speed after the collision will bed4lewwle6,u m o4s5d1, approximately,

  A golf ball traveling 3.0 m/+ rpjsn44 hh, wgamz((s to the 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 4nwzmshg p4j(, (ar+himmediately after the collision is

  A rubber ball with a speed of 5.0 m/s colli*;l utx n3l wupwxj*ef t)+7;hdes head-on elastically with an identical ball at rest. What is the speed of the initially stopped ball after the collisihwut7 tw+ju ;*;px3)f *x elnlon?

  A very heavy object moving with speed v collides head-on withjg w.z2sfs)iuk3w 2v 9wyn12 f a very light object at rest. The collision is elastic, and there is no friction. The heavy object barely sl29jn2 wf13sz vfy)wi2g.ksuwows down. What is the speed of the light object after the collision?

  A very light object moving with speed v collides head-on with a very heavy8*.o vafj 6g izh.bf3x object at rest, in a frictionless environment. The collision.j36f *8xibao hzvgf. is almost perfectly elastic. The speed of the heavy object after the collision is

  A red ball with a velocity of +3.0 m/s colljv66d3(cxj it ides head-on with a yellow ball of equal mass moving with a velocity of -2.0 m/s. What is the velocity of th6i j tdv6(cxj3e yellow ball after the collision?

  A very heavy object moving with velocity v colli3gjwpfpulp(mm;(x ;vcud ye.8 wdn -ktp84 *,des head-on with a very light object moving w,4pmdunj8umcdf yk;;g e( w8-* 3 w.lp(vpptx ith velocity -v. 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?

  In an inelastic collision, if the momentum is t(( i4 pus3 /2au1rhyirofp5v conserved, then which of the following statements is true about kift24rp53ih p(ais y(1uvuo/ r netic energy?

  Two objects collide and stick together. Kinetic en3)jer+nox q)nergy

  A 3.0-kg object moves to the right at 4.0 m/s. j,tz3-z u2 q/.biqmefdz52k v It collides in a perfectly inelastic collzj5buz/- ,dzkev22tfqq m 3 .iision 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 sti 7ikbs5s:znx2cks. Which object experiences the larger magnsxk b s:n25iz7itude of momentum change?

  In a game of pool, the whi ;;lac2 r*2 mwmpsqm+pte 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 m. Which of the following statement x +y)zrxnx78ds is false+xz8d nxy7)xr ?

  Which of the following is a false*kkt0hqe6 ea7 p5 kmq*q+1zah statement?

  Tightrope walkers walk with a long flexible rod in orde/i9hh w.ox)plf3it x 9r to

  A plane, flying horizontally, releases a pm keawdlr idaov k9.f90*+5o* cn8-zbomb, which explodes before hitting the ground. Neglecting air resieozwnplf+da0 8-9*o5a.9vk*m rcd k istance, the center of mass of the bomb fragments, just after the explosion

  Two cars collide head-on on a level friction-free road. The collision was ct mzh:m qg78 d+.1qcxzompletely inelastic and both cars quickly came to rest during the collision. What is true about the velocity of this system's qczg.7: +8mqxm1dthzcenter of mass?

State Newton's second law for a system of pjd/n*lv a2jw 2s9fdp.articles.

  What is the momentum of a 2000-kg t ,f hhpiht9*4kwk:c g/qfv4 .d yx:s5druck traveling at 35 m/s?

  A 1200-kg ferryboat is miwlc8 o0 e6no;42utzgoving south at 20 m/s. What is the magnitude of its momt6i80ze l;g4wno 2ouc entum?

  A ball of mass 0.10 kg is dropped from a height of 12 ggjf3sk;1 ng0zxa u/7m. Its momentum when it strikes the groundnsua3g f7x g ;zk/g10j is

  Two identical 1500-kg cars are moving perpen;/ bbc4/kims7 +j lbfidicular to each other. One moves with a speed of 25 m/s due north and the other moves at 15 m/s due east. What is the total b7 b bs;if/4c m+kij/lmomentum of the system?

  A handball of mass 0.10 kg, traveling horizontally at 30 m/s, stx9pyt;n8o,3r v319mt bwwl umrikes a wall and rebounds at 24 m/s. What is the change in the mttyub; mm,81wx3wvo 9prn 9 3lomentum of the ball?

  A 0.060-kg tennis ball, initially moving at a speed of 1g 5wr8bjych 5mq y 9l0q whog2ug7,;9u2 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 change in momentum uwg5 20c y95 qq og7rhhjyl9,wb;8 gumof the ball?

  A 50-kg pitching machine (excluding the b3sq02h pq y*;3klmhon g/ dlf/aseball) is placed on a frozen pond. The machine fires a 0.40-kg baseball with a speed of 35 m/s ml3 dk2lhshy /;o0 nqq3/*pfg 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 spzm4:wf6u)j dnace capsule and is stationary when the tether line breaks. As a means of returning to dw )fm:4nzj6u 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 object at reg9gpvydn1yk rgo+) d3+6+8t vd t)pvyst. The small object bounces straight back with a momentum of magnitude 4. y8++1)v9)ty pdvg6kt d+ov pn3gr ydg0 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 your friend (40-kg mass6n5jmxw6/ y pnhdy6f2), who is standing still, with open arms. As you collide, while holding eachpxy6j6ywnf/nm6 h d 25 other, with what speed do you both move off together?

  A car of mass 1000 kg moves toew9x( 9ztrklp x ;1p0j the right along a level, straight road at a speed of 6.0 m/s. It collides direjlkzwx xp rp19(;09t ectly 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 runs into the rear of a stopped car that haloxqg m0u)j wvk vri f505p15+s a mass of 1500 kg and they stick together. What is the speed of the cars after the collisij r5 qkiuf 501mo+5p0xlgv )wvon?

  A railroad freight car, mass 15,000 kg, iso de 83g so.e/ldntm/hcv*(+w allowed to coast along a level track at a speed of 2.0 m/s. It collides and covoee3 ohmn+ d8(*t /g/sd wcl.uples with a 50,000-kg second car, initially at rest and with brakes released. What is the speed of the two cars after coupling?

  A railroad car, of mass 20k4-+bf iqp 9n6 ujvl8q0 kg, rolls with negligible friction on a horizontal track 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 ca9qn-8kpb lf6+jvuq 4 ir. 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 thmm gqo07 -g*yce log). With what spe m *g0y7g-cqmoed does the log move, with respect to the shore?

  A 4.0-N force acts for 3.0 s on an object. The force suddenly increases 9m;vk+gbs p ,nw9m64rbcuidg5 y +b3fto 15 N and acts for one more second. Wru iyn3cbgbm 6f4g+ ;b ,p9 95wd+vmskhat impulse 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. What is the objectbh )-s8yk 64h,mskxlorpr(xe *u0p * khsxu*r4koe (s*thp -)0 6bpmx8ryl,t's change of velocity?

  A 2000-kg car, traveling to the right at 30 m/s, collides with a brick wall andyhthorg 9+lb3 ,/ h 8,xf+ e+hiiyfj6i comes to rest in 0.20 s. What is the average force the car exerts on the wa+g+i,yxy f oh 8btijli+9hfhe,3hr/6ll?

  A 2.0-kg softball is pitched to you k 5k:l vz/,ntd6mn32x.ldb ycls.e (oat 20 m/s. You hit the ball back along the same path, and at the same speed. . z2e,sxdn lkl3l v6n(/ ctm.ydk5:boIf 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 dropped onto a table top. The s6q7cfy g+ hkm-tf,4xg kn99zcpeeds of the ball right before and right after hitting the table top are 5.0 m/s and 4.0 m/s, respectihgcfz qtxn,-k +9 fg794m6ky cvely. 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 35.0 kg, fires 50.0-gram bullets, with a muzz hfrer/k4 -re8le velocity of 750 m/s, at the rate orh84fk-e err/f 300 rounds per minute. What is the average force exerted on the machine gun mount?

  A fire hose is turned on the door of a burning bui5nwm5vu5id+im/z/2 . gvgo nllding 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 velocity of the streamog2 /w mv5m z 5/nuiil5.d+gvn needed, assuming the water doesn't bounce back?

  Water runs out of a hordmclg4sy: pl : 0k;*sxizontal drainpipe at the rate of 120 kg per minute. It falls 3.20 m to the ground. Assuming the water doesn't spladxg lkl 0;sp*:m4cys:sh up, what average force does it exert on the ground?

  A toy rocket, of mass 0.12 kg, achieves a velocity of 40 m/s after 3.0 s, when ui,1x0 aewty7k3p *d xfired straight up. What average thrust f kx ,7xpe3dui01twya*orce does the rocket engine exert?

  Two astronauts, of masses 60 kg and 80 kg, are initially at resb1 c,*nd)r,wo wc0xiyt in outer space. They push each other apart. What is their s c n0ybox,)wc*rwd 1,ieparation 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.8paxmu0ykps( -2hmj) It collides in a perfectly elastic collision with a 6.0-kg object moving to u2haj 0px- 8(y mpksm)the left at 1.0 m/s. What is the total kinetic energy after the collision?

  A 0.10-kg object with a velocity ow 8,yq6,yv; k. nsmomrp iq *ix4hk7n4f 0.20 m/s in the +x direction makes a head-on elastic collisionvkx 4qw n 4myi 7;n8,k qyimp6,rosh*. 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 mw1x a3 sd1u;p ku. ta)ec9 6:,eeliccs/s is fired into 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 kd;aece :36asesu.,p1u1i9ctl )xcwthe velocity of the block right after the collision?

  A proton, of mass m, at rest, ulej tg+5k h3 zy0r7v9is struck head-on by an alpha-particle (which consists of 2 protons and 2 neutrons) moving at speed v. If the collision is completely elastic r3gzhlk vy je7u5+90t, 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 ball of mass 1 ,cg;77i .og-l kzrdty00g- i7,t dyr l;c7.zgko g. The collision is elastic. 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 3.70 m/s collides hey c;66*a ulch+g*j rdig.qw4dd4kb v8ad-on with a 200 g ball sitting at rest. The collision is perfri.g ay *8 +;v*6bcqg6d ld4 cwd4hkjuectly 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::z4mw e3c2 mrk7 mlm tyhb6(b collides head-on with a 3.0 kg m(mcw24yb:l6 3re m zmkh 7tmb:ass at rest. If the collision is perfectly inelastic, what is the speed of the masses after the collision?

  A 2.0-kg mass moving to tn:yfesvbtz6qd 5 2v,9he east at a speed of 4.0 m/s collides head-on in a perfectly inelastic collision with a stationary 2.0-kg mass. How much kinetic energy is lost durin29zsvyqv5db:6 e tn f,g this collision?

  A car of mass m, traveling with a velocity v, strikes a parked station waxbv-,d, 6 u. zgp06vvq 7burcxgon, who's mass is 2m. The bumpers lock together in this head-on inelastic collision. What fraction gdx pqbrc,0 67x.v b6z-u,uvvof the initial kinetic energy is lost in this collision?

A 15-g bullet travelin849nasfka+18 z)qyu jurej. fg 213 m/s in a vertical direction buries itself in a 2.4-kg block of wood a rest directly above it. As a r 8r +f .aq81 usnuej4fyzk9ja)esult, 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/h vob(8+7 cdini 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 then(7v d+ci ob8i cars after collision?

  A 1500-kg car traveling at 90.0 km/h east collides with a 3000-kg car traveb.)r +wod dy(wling at 60.0 km/h south. The two cars stick together aftwbd+(r)ydow. er 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. Ot7v)p+md1 jaqed;dqgo z :gp6b:el +*bject A moves east with a momentum of 24 kgm/s. Object evd;q +gm1:p*eoj7t:+gl bdp )q ad6 zB 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 withc 5ng5q-2dwfy rf n;*g a velocity of 4.0 m/s. It explodes into three fragments: a 5.0-kg fragwf ngr ycqd5* nf2;5-gment 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 xsfmly n/e-)k( = + 21.0 m. Where is the center of mass on the xsy (kn/-lfme )-axis?

  The center of mass of aur/za8. rl(ajflz u+u :*. xpd two-particle system is at the origin. One particle is located atu8*(flr uz+a pdax.rl.u z :/j (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 posixpt so 91lt(fi4 7e5xgtioned as follows: 2.0 kg at (0, 0), 2.0 kg at (2.0, 0), andx9(i l t7t4fps1exog 5 4.0 kg at (2.0, 1.0). Determine the coordinates of the center of mass.

  Three masses, 1.0 kg, 2.0 kg, and tovq+*k1 5f;ly ofnkwr8a8 (j 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 location of the center of mass of the sw 8ky8fvojl+5 k; r(fq*1ntoaystem?

  A 3.0-kg mass is positioned at (0, 8.0), and a 1.0-kg mass is ofbmfi+ 8)fuar f**1kpositioned at (12, 0). What are the coordinates of a 4 krfbfmif+8o1f **a) u.0-kg mass which will 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 of a wholsi *u3io3 t4 offbr:y0e leg including the foot when the leg is stretched straight out. Assume the person is 1.60 iry f u0fbo:4s it33o*m tall.