What is the SI unit of momentum? 4d4b xjxg cp-3(z8hkbub8x9 z

  When a cannon fires a cannonball, the cannon will recoil bacr27p4/g- boe1j v)hn 0mkeub4 igpm2e kward because the

  A freight car moves along a frictionless level railroad track at constant gi, 5zezt21rj speed. The car is open on top. A large load o2 z5 ,izejgr1tf coal is suddenly dumped into the car. What happens to the velocity of the car?

  A child falls sideways off a sled while sledding on frictiot)8w4 ztbf2am nless ice. What happens to the velocity of wmt)zf2b84 at the sled?

  A rubber ball and a lump of putty have equal vwa fjqq ; ).84hf,s7g2rfjrqmass. 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 experiencj 7)4 v f,;grwjqr8affs2hq.q es the greater momentum change?

  A sailboat of mass m is moving with a momentum p. How3qj pfeo9irx0x -+xkwcln . a7 bvn((* would you represent its kinetic energ(xnx(pq 0a7xk-.o*i9 wjrc +v3nlbfey in terms of these two quantities?

  If you pitch a baseball with twice the kinetic energy you gave it iyecl g7tl+*n 5jpx8f6ae+ )2aqjl-itl(jso 3 n the previous pitch, the magnitude of it glc*-jen2e( 8) yqlli ao+txjat675f3lpsj+ s momentum is

State Newton's second law in t*r yxz5(xxj+uk(v8a k erms of momentum.

State the law of conservation of xb + rd) rmg0jfa-h(l+momentum.

  The area under the curve on a Force versus tilf7xpednqs:/d6 0 g-xme (F vs. t) graph represents

  Which of the following is an accu +uv9pq8hwi- arate statement?

  A small car meshes with a large truck in a head-on collision. Whichu).9 p.c knzkd4 sf(tsh7(ptc of the following statements concerning the magnitude of the average collision force is correc4((du kz n.9hssk.fp)ct 7ptc t?

  Two equal mass balls (one red akr k9(3c)xd;jd) ci yhnd 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 impulseyi 3 dxd( c;))kcjh9rk during its collision with the floor?

  A Ping-Pong ball moving east abgoutfcw4,8 . t 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 e4fgob8,tc. w uast. Which object experiences the greater magnitude impulse during the collision?

  Two objects collide a7q u arh7:nw(*fhig 8+t) puavnd bounce off each other. Linear momentum

  A 3.0-kg object moves to the right at 4.0 m/s. It coll :sr+wfdf276:w4tskwu tn fk* ides head-on with a 6.0-kg object moving to the left at 2.0 m2u +6wnkdtwt wf s74*srk:f: f/s. Which statement is correct?

  A 100-kg football linebacker moving at 2.0 m/s tackles head-on an 8 ta8l*qvqc0 g7q. 0cop0-kg halfback r0q7c.ot8g*q0 c pqvla unning
3.1 m/s. Neglecting the effects due to digging in of cleats,

  In an elastic collision, if the momennyxp0vh0k-j4 tum is conserved, then which of the following statements is true about kinhnx k v040-ypjetic energy?

  When is kinetic energy:ngcf(xes2/ s jlwz:8 conserved?

  In a game of pool, the white cue t *0x*8p9sakw)/odrr up zty *6qwtq4 ball hits the #5 ball and stops, while the #5 ball moves away with the same velocity as the cue ball had originally. The type of collision4/6)*owp ws8 *rkzqxd* prt 0aty uq9t is

  When a light beach ball rolling with a speed .v;oc(rc: pgp9 ihqx 5of 6.0 m/s collides with a heavy exercise ball at rest, the beach ball's speed after t5p hrq (cpg;v9:o ix.che collision will be, approximately,

  A golf ball traveling 3.0 m/s to the right collides in a head-on22myn 5 6sr sucouw+k7 collision with a stationary bowling ball in a fricti67mr+ncyskuu os25 w 2on-free environment. If the collision is almost perfectly 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-y12yxy 3a1saw2vc am+ on elastically with an identical ball at rest. What is the speed of the initiall12a m way xcy32a+yvs1y stopped ball after the collision?

  A very heavy object moving with speed v collides head-on with a very light obl6ut0ca g8/bb(rx35m+snyo 5xrv1t v ject at rest. The collision is elastic, and there is no frictir t5 +n6vbxrt( u1m30b/xcso a8lyvg 5on. The heavy object barely slows down. What is the speed of the light object after the collision?

  A very light object mld4 +epfni85;eq)ltq m* fh m6oving 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 obifnh5;6me)q dfl*8p m t 4eql+ject after the collision is

  A red ball with a velocity of +3.0 m/s cob bzg91ow;x* 1 racf*-hdbd-zllides head-on with a yellow ball of equal mass moving with a velocity of -2.0 m/s. What h*dbwxzr9 *- -gd1bz;ba1fc o is the velocity of the yellow ball after the collision?

  A very heavy object moving with velocity v collioo7v(/cvg7aq des head-on with a very light object moving with velocity -v. The collision is elastic, and theqga7o7o(cv v /re 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 thermf9e z6 t41hjo70nht following statements is true about kinetic o h6m 4f1 jthezt97n0renergy?

  Two objects collide and stick togethspq1wyc b/wyc);.1u + xzv*bver. Kinetic energy

  A 3.0-kg object moves to the right at 4.0 m/s. It collides in a perfectly ineqt) hmj 3.xm r86xz6w 6plx7bulasrh 7.) 6xqu3mb6x xlztw86m pjtic 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 h0 blexwna2 8/a large object and sticks. Which object experiences the larger magnbe2xh wn0 a8/litude of momentum change?

  In a game of pool, the wqdtz(/pjq) 5v hite 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 statements w0avexe ;( ao /ck5sq;is false?cv k;oa/x 5ae;qe0 ws(

  Which of the following is a fa*+ nwo**ybwnd lse statement?

  Tightrope walkers walk with a long flexible rod in oxz.t infjed;qrxe cvs26 3.mc:)b; qhh-3i b 9rder to

  A plane, flying horizontally, releasfb5e. wef/ ql,t+t 4-h-ivt ices a bomb, which explodes before hitting the ground. Neglecting air resistance, the center of mass of the bomb fra-ql4i .eb+,t-f veci wh5t/tf gments, just after the explosion

  Two cars collide head-on on a level friction-free road. The collisio eu*cz3ms4n 9m2wc7f an was completely inelastic and both cars quickly came tw cn zumes27934*acfmo rest during the collision. What is true about the velocity of this system's center of mass?

State Newton's second law for a system;chhv1az+ u3v+;y /irwo ls6a of particles.

  What is the momentum of a 2000-kg truck travelingw2yh/ bf l7fz; at 35 m/s?

  A 1200-kg ferryboat is mo)s6f h*w2q yjdving south at 20 m/s. What is the magnitude of its momen6jsq)hdw2 f*ytum?

  A ball of mass 0.10 kg is dropped from a height of 12 m. Its momentum2mxp pr39qh9l1. nppz)g r+w4+igm nl3zez9 y when it stri )x m n33lzeprn1+99w4ylp.mq29p r+ zigphzgkes the ground is

  Two identical 1500-kg cars are moving perpendicular to eaq.2(ck;cmk-wy st ; 6fm:cyzw4p5 gpz ch other. One moves with a speed of 25gt6.k wp2p:;yc-;mc(m ykfszqc wz4 5 m/s due north 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 h0r:(an-3vy2lwvri b g orizontally at 30 m/s, strikes a wall and rebounds at 24 m/s. rgn ba-(v2yiw0 :lrv3 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, is strucce: 0rjo+7hw7zk4mh u/ aeis 1h*/rgz k by a racket causing it to rebound in the opposz*+h7h:1 /ja47 h o0 kcriszeg/euwrmite direction at a speed of 18 m/s. What is the change in momentum of the ball?

  A 50-kg pitching machine (excludin oa5- /ygjih+tgfv +n*g the baseball) is placed on a frozen pond. The machine fires a 0.40-kg baseball with a spv+ -h5 gn/jf+ytoa* gieed of 35 m/s in the horizontal direction. What is the recoil speed of the pitching machine? (Assume negligible friction.)

  A 70-kg astronaut is spadjqttvpqm1b: m,of9 f bqpg1,950ss6d b/ c) wce-walking outside the space capsule and is stationary wh5qmqgtp1)b ,:f bsmovqcs60pd,bd99jf tw1 /en 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 approp27grnll3: 3eypa pr 5aches head-on a large object at rest. The small object bounces straight backp5r3l7gp 3n:yl r2p ea with a momentum of magnitude 4.0 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 massdv*pu q bxse18( a+t:m), who is standing still, with open arms. As yoe(dstxp ma8b uq +1v:*u collide, while holding each other, with what speed do you both move off together?

  A car of mass 1000 kglrq;mwz3f *;n moves to the right 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 is the total lq*w;nm3;frzmomentum after the collision?

  A 1000-kg car traveling at 25 m/s runs into the rear of a sxv4b b00m 0ct+ nxy(fvtopped car that has a mass of 1500 kg and they stick together. What is the speed of bntvx 0 0xmbfy(v0c +4the cars after the collision?

  A railroad freight car, mass paih++) mvd b-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 brakes released. What is t+hmd )iba-v+p he speed of the two cars after coupling?

  A railroad car, of mass 200 kg, rolls with negligible friction on a horizontajjpixqb( a7*- o7)t t dfet/h;l track with a speed of 10 m/s. A 70-kg stunt man drops straight down a distance of 4.0 m7e;aj*ioh ( xtt)/fd-7b tjqp , and lands in the car. How fast will the car be moving after this happens?

  A 60-kg person walks on+ 3if7us-.1gx fbv(5 :j fanf6vsqtgl a 100-kg log at the rate of 0.80 m/s (with respect to the log). With what speed does the log move, with resp.3 vf-1i sfgf:bn+ g tl 6jfxvu57s(qaect to the shore?

  A 4.0-N force acts for 3.0 s onvlu-ka om.t p(k5sr.. an object. The force suddenly increases to 15 N and acts for one more second. What impulse was imparted .tvolk.m(s-kr 5p .uaby 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 objesm) ;heif i onz-6(wg6ct's c-mieho6z )nf(6 g; wishange of velocity?

  A 2000-kg car, traveling to the right at2 q2i8. rm py/igz aq:9mn6uxk 30 m/s, collides with a brick wall and comes to rest in 0.20 s. What is t9 /nkgi8qiym2 x2zqp: 6.u rmahe 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 back wvzgnw5i18o -n6w 4xoalong the same path, and at the same speed. If the bat was in contact with the ball for 0.10 s, what is the magnitude of the average force thzw6x5 8woin14w-ovng e bat exerted?

  A 0.10-kg ball is dropped onto a table t jgta97)z5 zsfop. The speeds of the ball right before and right after hitt)5 a7 z9zsgtfjing 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 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 muzzle vthx/duh3 aw 2r 2d0-p2ks 5fhv:dc;lyelocity of 750 m/s, at the rate of 300 rounds pet0f2s3 vxc5 :-duh kd ;hyr/ad22hlw pr minute. What is the average force exerted on the machine gun mount?

  A fire hose is turned on the dooe pq40psg z1fvq5*3(ot9 lohlr of a burning building in order to knock the door down. 9v(q0p fls5p*g oq o1z4tel3h 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 t-/ pp,xwbvwtt63q s.+c z*cgnhe rate of 120 kg per minute. It falls 3.20 m to the ground. Assuming the water doesn't splash up, what average force does it vc t z,c-wp/pq*bswg n6+x.t3exert on the ground?

  A toy rocket, of mass 0.12 kg, achieves )14ssy8wr-+ *zboputt9 g .cg mz9 du(ob1z kxa velocity of 40 m/s after 3.0 s, when fired straight up. What average thrmzs uo (g.1o d+zt84 ptwb9u)ry*kxz-gs19cbust force does the rocket engine exert?

  Two astronauts, of masses 60 kg a ssuwwq*c ,:9u9igy h4nd 80 kg, are initially at rest in outer space. They push each other apart. What is their separation after the lighter astro49,:9suuqgwy *hiscw naut has moved 12 m?

  A 3.0-kg object moves to the r g-t9g;/- /yl7lkor5tpfnp daight with a speed of 2.0 m/s. It collides in a perfectly elastic collision with a 6.0-kg object moving-l ;ydp5 fa7gptr ng/ olk-9t/ 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 direcs1 hyj+t,7lwr tion makes a head-on elastic c1wht7ryl, js +ollision 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 3*h9 flmk :0 wr4g1fn fobc:vx400 m/s is fired into a 1.00-kg block at rest. The bullet emerges (tx:v0fl m h b1 fw9f*no4ck4g:rhe bullet does not 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 and-4w:bfd qh,k alpha-particle (which consists of 2 protons and 2d-bh:4, qkwdf 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 with a stationary bwo bmukp 7;3uodu) .l.all of mass 100 g. The collision is elastic. What is the speed of each ball immediately3ub w.l.7o u kd;mop)u after the collision?

A ball of mass 400 g moving toward the easn c,9.kfzl(y xfy,b,csvl-: jk4nb x2t with a speed of 3.70 m/s collides head-on with a 200 g ball sitting at rest. Thnz-clf,l4 bbvyxxs:,.j9f(, n2 yk kce 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 collides head-on with3tbuzxq5ba1ki+ 7x :m a 3.0 kg mass at rest. If the collision is perfectly inelastic, what is the speed of the masses after the collismkt :qax3+x z5b ibu17ion?

  A 2.0-kg mass moving to the east at po i7f4 k5qcyb-lvzadys 0336 a speed of 4.0 m/s collides head-on in a perfectly inelastic collision with a stalv 4o0s5afk7bqp 63-cy iy 3zdtionary 2.0-kg mass. How much kinetic energy is lost during this collision?

  A car of mass m, traveling with a velocity v, ec rriz1-7:i,knvp 8x +:e wmnstrikes a parked station wagon, who's mass is 2m. The bumpers lock together in this head-on inelastic collision. What fraction of the initial k rn m- e,zciv7: 1e:rw+ixp8kninetic energy is lost in this collision?

A 15-g bullet traveling 213 m/s in a vertical direction burietkoo *isz*:vhj. /) fpdvu ;m*s itself in a 2.4-kg block of woouto.: i *v; fz*v)skjp* dm/hod 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 903 xx )3fe(sk 1clvkdu;.0 km/h east collides with a 3000-kg car traveling at 60.0 km/h south. The two cars stick together afters3lexc f1(x )kv ;3udk the collision. (See Fig. 7-1.) What is the speed of the cars after collision?

  A 1500-kg car traveling at 90.0 km/h ear7 czg7jy8 *a, 26vzrj tdbt.zst collides with a 3000-kg car traveling at 60.0 km/h south. The two cars tj7,8762t cgj*rr. bv zzydza 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 surj46qb 5q,sv yvface. 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. Wy qsqbv46,5 jvhat is the magnitude of their combined momentum after the collision?

  A small bomb, of mass 10 kg, is movinhq y9w63)vv dcy c8uw)g toward the North with a velocity of 4.0 m/s. It explodes into three fragments: aw6c)qc9) 3vw 8uv yydh 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 third fragment? (Neglect air friction.)

  A 4.00-kg mass sits at the origin, and a 10.0-kg mass sitdwvod -3d p8hfw(d)/ ms at x = + 21.0 m. Where is the center of mass on thd/ 3dw)h- wdfm( opv8de x-axis?

  The center of mass of a two-particle system ifh zwnlkh ri7l,z/2(e fw0t(( s at the origin. One particle is located at (3.0 m, 0) and hf ef (z0n2t 7lr/k( lihhw(z,was 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 at (0, 0), 2.0 kg /uzj49t(x s9hwa eq 6 n(p:xbrat (2.0, 0), and 4.0 kg at (2.0, 1.0). Determine the coordinates of sn xb(ph6awx :/9urzt(4ej 9 qthe center of mass.

  Three masses, 1.0 kg, 2.0 kg, and 3.0 kg, are located at (0, 0), (1.0 yi 5 (tvmr;u8a:.mdes m, 1.0 m),auy :s e.; 5tdm8irvm( and (2.0 m, -2.0 m), respectively. What is the location of the center of mass of the system?

  A 3.0-kg mass is positioned at (0, 8.0),q 2 o0tqzku;y7 /6rqqdca,- by 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 dzy ,-b q a otykq6qu/qr720c;three masses being located at the origin, (0, 0)?

  Use Table 7-1 to calculate the position of the CM of a whole ls4bl+n/ 0paecl 3 uds-eg including the foot when the leg is stretched strai/0-snae+ sldlb3u cp4 ght out. Assume the person is 1.60 m tall.