What is the SI unit of momentum?y1/5pbow.sa z

  When a cannon fires a cannonball, the cannon will recoil backward b(i*mybl.,r86grqy w ak c 3.qxecause the

  A freight car moves along a frictionless level railroad track at constant ; ijq(+up7kv,q 7 iujrspeed. The car is open on top. A large load of coal is suddenly dumped in(;i u7v7 pi,jqur+jk qto the car. What happens to the velocity of the car?

  A child falls sideways off a sled while sledding on frictionless ice. What har0iuz,z ; 5wvoppens to the velo;5uir0 zzwov,city of the sled?

  A rubber ball and a lumcs 79s8z awc yspbf r4+5w*h/cp of putty have equal mass. They are thrown with equal speed against a wall. The ball bounces back wscws8 zpb75frah*/ 9c4yws +cith nearly the 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 you r j1ff1q2 lx,wt1dsog/+gj 2 kdepresent its kinetdf+1 ,gl jjo /k2gdwt12f1qs xic energy in terms of these two quantities?

  If you pitch a baseball with twice the kinetic energy you gave it in thmwu /bh9b o:*vn*gr0ve previous pitcouv9bv n 0 /mb**gwr:hh, the magnitude of its momentum is

State Newton's second law in terms of mvxa u2 wk0)cc8eqw*;f r:n+p;l q;wexomentum.

State the law of conservation 2cvnd z8m;fi-kn b 4.fof momentum.

  The area under the curve on a Force versus time (F vs. t) graphgxp5 ;/mz j 75)puqnoa represents

  Which of the following is an accurate st)svssa0ija+ ,n..yayl 3aa q.atement?

  A small car meshes with a large truck in a head-on collision. Which of tht,xdl +zlm,2 he following statements concerning the magnitude of the average dl +l,,x2tmhzcollision force is correct?

  Two equal mass balls (one red and the other3zirex 7atg )r;qz;l 8 blue) are dropped from the same height, and rebound off the floor. The red ball rebounds to a higher position e;l3qzi)agxz r78r;t. Which ball is subjected to 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 wg jxpw*s83;mwith a stationary bowling ball. The Ping-Pong ball bounces back to the west, ax 8gs ;*jm3wwpnd 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 gj)zh afn uu+p.5 6bu/other. Linear momentum

  A 3.0-kg object moves to the right at 4.0 m/s. It collasqtm 2ss *(;+/ 4z2cldz.lgokb+ uow ides head-on with a 6.0-kg object moving to the left at 2.0 m/s. l; a s2s cqg* omd z.2(ku++4/oblzwst Which statement is correct?

  A 100-kg football linebacker moving at 2.0 m/s tackles head-bz:p1lk- iyrl :ogm6- on an 80-kg halfback run ig r1z:bkpy-lol:6 -mning
3.1 m/s. Neglecting the effects due to digging in of cleats,

  In an elastic collision, if the momentum is conserved, then vyq jfzhk..q95ak88rwhich of the following statements is true about kinetih.58k yqq z r89jkvf.ac energy?

  When is kinetic energyw +9g xoic7rpp(d(qa yt1l22z conserved?

  In a game of pool, the white cue ball hits the #5 ball and s*to tl,d58qtkc3mlg i1g qw4: tops, while the #5 ball moves away with the same velocity as the cue ball had originally. The type of collision is:glgowc l 4tmq1 5 ,qt8*t3ikd

  When a light beach ball rolling with a speed of 6.0 m/s collides with a hm0kd1 k d:oreu+8vz6xeavy exercisedxv+u6rk:m 1do0 e8 zk ball at rest, the beach ball's speed after the collision will be, approximately,

  A golf ball traveling 3.0 m/s to the right collides in a head-on collision wit/ vj axnd0pit e ;+0v,*n)qlnch a stationary bowling ball in a friction-free environment. If the collision is almost perfectly elastic, the speed of the golf ball immediately after the collijn e p /nv+ct*q;d0,v0ln)ixasion is

  A rubber ball with a speed of 5.0 m/s collides head-on elastically with an idc,155ndm(2 n gz*r1dupm netk entical ball at rest. What is the speed of the initially stopped ball after the(cmn1ngdk5r, pze2nt1m du 5 * collision?

  A very heavy object moving with speed v collides head-on km 7lw0e.6,xniuea:js8 (ryb with a very light object at rest. The collision is elastic, and thereb7.(s08e:rkm njyx,i lu6wae 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 speeda ,l ,k6x-*lf)yo kcgf v collides head-on with a very heavy object at rest, in a frictionless environment. The collision is almost pe*6xlyf k)k-oc ,gl ,afrfectly elastic. The speed of the heavy object after the collision is

  A red ball with a velocity of +3.0 m/s6b*malh(et -c g(l3hb collides head-on with a yellow ball of equal mass moving with a velocity of -2.0 m/s. What is the velocity of th(ll*t6cb-em bhg3 ( ahe yellow ball after the collision?

  A very heavy object movijv pm,lqk2;q/ftu)dy *4v hrt.f/f3ya:7 q dr ng with velocity v collides head-on with a very light object moving with velocity -v. The collision is elastic, and p3k:)/l 2ta7d.j fy,qyr*quvm qr/f4d ;f htvthere 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 10 vo/xpni) qlwhich of the following statements is true about kinetic ev1p )qo/n0i lxnergy?

  Two objects collide and stick together. Kinjlh(wze*6t .d:m.hx ovw(iv - etic energy

  A 3.0-kg object moves to the right at 4.0 uz,l6rye 4vlvv*y p/ 2m/s. It collides in a perfectly inelavlvlyzr, p*y/eu46 2 vstic 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 objecb;c w 1ugdkfsw+afg w-c::h) 3t and sticks. Which object experiences the larger magnitude of momentumw-);3wa 1+u skdfcwcg:g:bfh change?

  In a game of pool, thk- sx18dvqg -;d kpjzvq1r/y6 e white 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 sta:d9yx9 r a uc-s+ki8qdtements is false?d9ud+:9 sc -xy8airqk

  Which of the following i 1wc921 ojz,rmv-7cmyhn ntl+ s a false statement?

  Tightrope walkers wal o(-)waeba5z uk with a long flexible rod in order to

  A plane, flying horizontally, releas .qtr tn k zh+sr03mu:bs4h.*nes a bomb, which explodes before hitting the ground. Neglecting air resistance, the center onb uqhn3:h.kzr sr*st.m t+0 4f mass of the bomb fragments, just after the explosion

  Two cars collide head-on on a level friction-free road. The coli kb fpdcclmh4 w 4o)q-)6.o*ylision was completely inelastic and both cars quickly came to rest during the collision. What is true about the velocity of this system's center opl w i dk4fb o6)c-h)ycm.q*o4f mass?

State Newton's second law for a sy4x 8suas:sfbtfb)izyp+9er;u4 m4 u t- dc-q *stem of particles.

  What is the momentum of a 2000-k ddgg8 xe2mx :zf4:pr.g truck traveling at 35 m/s?

  A 1200-kg ferryboat is moving south at 20 m/s. What is te 2dlpjp)5,n3hwvi 4,o lr ci4he magnitude of its moment4hpc3v iw4 ol ,n25pei,jld r)um?

  A ball of mass 0.10 kg 4szj yjsa-2)w2bp+ e pis dropped from a height of 12 m. Its momentum when it s awp-22j e4ysj +)pbzstrikes the ground is

  Two identical 1500-kg cars are moving perpendicular to each other. z7gppys (-po-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 momentum of the systes--yzgo7pp( pm?

  A handball of mass 0.10 kg, traveling horizontally at 30 m/s, sthvhnzb(:lg we7*7d (arikes a wall and rebounds at 24 m/s. What is the change in the momentum of th *: 7ezwdhn7l (hgav(be ball?

  A 0.060-kg tennis ball, initiae i t :st4mg+)jn0qti)kxcs 4,lly moving at a speed of 12 m/s, is struck by a racket causing it to rebound in the opposite direction at a 4sscgix,iqntte0)ktj+:m 4) speed of 18 m/s. What is the change in momentum of the ball?

  A 50-kg pitching machine (excludingk9xbei2+ f ohd3j +fb .a7+was the baseball) is placed on a frozen pond. The machine fires a 0.40-kg baseball with a speed of ke+ j3iofx2b9a+fw7s had.b +35 m/s 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 spaae6 ued+6y,qqnpqv k.k2c* ij+dt 96hce capsule 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 speuq2 d avqti+,6qk +knede.chp 9*6y j6ed 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;f,o-mvw4idu0v z *er object at rest. The small object bounces straight back with a momentum of magnitude 4.0 kgm/s. What is the magnitude of the large object'ev*m fdoi4r,zu v-w; 0s momentum change?

  You (50-kg mass) skate on ice at 4.0 m/s to greet your friend (4v o+t4,xfmibqeb8,q20-kg mass), who is standing still, with open armsqv2xf ,4b ,q8 beo+itm. 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 a level, straight road at a bq +1cgzs c) *vpj8w2gtupdf1 q1. fq-speed of 6.0 m/s. It collides directly with a stopped motorcycle of mass 200 kg. What is the total momentum after the collis*t1-qpg2df 1f uj1+zpsvbq8q. g)cw c ion?

  A 1000-kg car traveling at 25 m/s runs into the rear of a stoppeit,n9 ku-rigu9e*4 a bd car that has a mass of 1500 kg 9,4ne tau ur i*k9ib-gand they stick together. What is the speed of the cars after the collision?

  A railroad freight car, mass 15,004u4kv i3*t oywhf8 u1v0 kg, is allowed to coast along a level track at a speed okuy8vh ow 1uf344t *vif 2.0 m/s. It collides and couples 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 m* pa5reu:49flgqr:bmass 200 kg, rolls with negligible friction on a horizontal track with a speed of 10 m/s. A f4*lpag:5umb9 err q :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 respect twz(kky* okr*0**ad k go the log). Wdky** * r*w0gokkkaz (ith what speed does the log move, with respect to the shore?

  A 4.0-N force acts for 3.0 s on dx+sgcxwp -fboqh8c 9*(d 5 5pan object. The force suddenly increases to 15 N and acts for one more second. What impulse was imparted 5p 5qd h-+oc8xx(fwpbdsg9 c*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 thet- qaeu ak-x53 object's change of veloa-3eu5k a-qtx city?

  A 2000-kg car, traveling to the righa ryraqx7*28 mt at 30 m/s, collides with a brick wall and comes to rest in 0.20 s. What is the average force the car exerts on the wallmrxa *8 a27qyr?

  A 2.0-kg softball is pitched to you at 20 m/s. You hit the balh dz9gey l*7j* tvlhfh3;0f*n 5a e8nxl back along 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 of0x;**hvha5lynzff 3ndg9 jt* 8el7eh the average force the bat exerted?

  A 0.10-kg ball is dropped onto a table top. 71 2 oyqzv6wi.yn6vvd 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 lasoiv.7 6vdw2ny6zyvq 1ts 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 velocityythh zq e.;p, 4dkg )qo*yv.p) of 750 m/s, at the rate of 300 rounds per minute.h.v);yqpopk,de4.g) t zh*yq What is the average force exerted on the machine gun mount?

  A fire hose is turned(1uco9 nr k msz4;-iqi on the door of a burning building 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 stream needed, assuming the water doe;o 4 ui-qmr(ns9c zi1ksn't bounce back?

  Water runs out of a horizontal drainpipe at the rate of 120 kg per minutk.7-gzgfqruue)w(1 y e. It falls 3.20 m to the ground. u zy(-fu7qeg grw k).1 Assuming the water doesn't splash up, what average force does it exert on the ground?

  A toy rocket, of mass 0.12 kg, yj)acn ekwk .1*w na);achieves a velocity of 40 m/s after 3.0 s, when fired straight 1k)nj)w.ac eayk; wn*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 l,*x7mge :2t6v h8 qlvavhrs*zoj-+tspace. They push each other apart. What is their separation after the lighter astronaut has mo,*r6*thgaq+7zhll voej2:m v- x8vstved 12 m?

  A 3.0-kg object moves to the right with a spw4 s+a5l elf9 b,t6xqxydy .p;eed 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 d+x 6 laeply495swy. q,t;bxfthe total kinetic energy after the collision?

  A 0.10-kg object with a velocity of 0.20 m/s in the +x direction makes a heafwmh 63sa mdw p(0 4p+8sj j (vig0m4yh1hdm9od-on elastic collision with a 0.15 kg object initially at rest. What is the 4hm p40my6d3 jvah 9m(s1 j8so(wwpdg+0fimh 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 blocr(e g us*d.-frk at rest. The bullet emerges (the bullet does not get embedded in the block) with half of its original speed. What is the velocity of the block right after the cos.rdfu(gr* e- llision?

  A proton, of mass m, at rest, is struck head-on by an alphalkipp5 /9l3o m-particle (which consists of 2 protons and 2 neutrons) moving at speed v. If the collision is completely elastic, what speed will the alpha-pal/ mp5i93 lkporticle 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 wit o;t)u/b vbj 5,5vohsmh a stationary ball of mass 100 g. The collision is elastic. What is the speed of each ball immediately ajv )uh;/o5t,s5mvobb fter the collision?

A ball of mass 400 g moving toward the east with a speed of 3.3fdd:/y 9 iqdw70 m/s collides head-on with a 200 g ball sitting at rest. The collision ifdiw9 y/3d q:ds 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 of7+q+b gs//mu )ksjjy e 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 after the collision)u 7ksb/emj/ sjgq+y+?

  A 2.0-kg mass moving k 5 /7cw a,nd-ja.pv mkx6nlj72l .amzto the 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 during this cv7/7j.2m c ja6p5 l.-kazlak,w xm dnnollision?

  A car of mass m, traveling with a velocity v, strikes a parked stapk7/,g s0ukldtion wagon, who's mass is 2m. The bumpers lock together in this head-on inelastic collision. What fraction of the initial kinetdul p7,gks /k0ic energy is lost in this collision?

A 15-g bullet traveling 213 m/s in a vertical diri85;irpgzx4w2g /nll ection buries itself in a 2.4-kg block of wood a rest directly above it. As a result, the bullet/block2l4n5 w lrx/;i gpzgi8 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 east collides with a 3000j u6jwyy70 k6b-kg car traveling at 60.0 km/h south. The two cars stibj 766yuw0 kjyck together after 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 east collis/mvx 7.se/; n nf-mtpdes with a 3000-kg car traveling at 60.0 km/h south. The two cars stick together after the cpn/t-v;xnsf7 ./ms meollision. (See Fig. 7-1.) What is the direction of motion of the cars after collision?

  Two objects move on a level frictionless surface. Objecynbllyj/ 3 acm3 1:)stt A moves east with a momentum of 24 kgm/s. Object B moves north with momentum 10 kgm/s. Th/njcl3l a 3t)ysm 1yb:ey 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 9(-qcmtim*3dv vc5ud toward the North with a velocity of 4.0 m/s. It explodes into thrdm5uqi t- d*c9v(mcv3ee 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 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 x = + 21.0y9 u /3)fl8*sansvvrx m. Where is the center of mass on the x-axi3 rxf*snv9)a/sl8v uys?

  The center of mass of a tj+ jo; l)iw.qqwo-particle 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 li;ow qj).j+q kg?

  Three masses are positioned as follows: 2.0 kg at (0, 0), 2.0 kg at (2.0*;5o3a;hamh7q zcy f m, 0), and 4.0 kg at (2.0, 1.0). Determine the coordinates of the center of mq3m hzmay;* a5c;of 7hass.

  Three masses, 1.0 kg, 2.0 kg, and 3.0 kg,v 83+g e6drfvkp faf81hs z6h 2gj.wu0 are located at (0, 0), (1.0 m, 1.0 m), and (2.0 m, -2.0 m), respectively. Whzuvdvgrs 3 60f hkhj.gaf+we p8f681 2at is the location of the center of mass of the system?

  A 3.0-kg mass is positioned at (0, 8.0), and a 1.0-kgzz6picbdo++9t i:: fd 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 masses beii :cd odfz9+itz6 :+bpng located at the origin, (0, 0)?

  Use Table 7-1 to calculate thelkfpbqhk77 ( 4 position of the CM of a whole leg including the foot when the leg is stretched straight out. Assume the person i7pf( 4lk7 kbqhs 1.60 m tall.