What is the SI unit of mom vk-lu)p (vf+)neb ox d;)ru4ientum?

  When a cannon fires a cannonball, the cannon will recoil baxkc j3s6zf e6rm ;37o4kx+dj)isp c 3)bda ;rkckward because the

  A freight car moves along a frictionless level railroad track* jc* .lkz-gry at constant speed. The car is open on top. A large load of coal is suddenly dumped into the car. What happens to the velocity ofyczg*k l -j.r* the car?

  A child falls sideways off a sled while sleddingsl8,3uv t9z 0bfpx 8 p.zxz.vih:i6uc on frictionless ice. What happens to the velocilzc6tux.z,:x.08pshuzipivv89 3 b f ty of the sled?

  A rubber ball and a lump of putxtj7rmj* -0(nlg s7kk ty have equal mass. They are thrown with equal speedjm k 0rn*k-(s x7lg7tj 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 momentum change?

  A sailboat of mass m is moving with a momentum p. How wofl9 leqhml+t12 ll)q rn(*0neuld you represent its kinetic energy in terms of tfr192 (q lnlel0mqtheln+l*) hese two quantities?

  If you pitch a baseball with twice the kinetic energy you gave it in ij 8ut:hro;).6gqxqemt i/ +y the previous)ej6g; uh8tot:.i qq x/mryi+ pitch, the magnitude of its momentum is

State Newton's second law in tef2b f,c-/m v2 kvk-q7:lb em/ exj7jzbrms of momentum.

State the law of conservation of momentusma-(s6t aqwi h+ 0g(,7xmkn um.

  The area under the curve on a Force versus time (F vs. t) graph rep ;rk0mo*fn+yc:vcp, zoimi . 6resents

  Which of the following is anu)g )fq: xpg6t accurate statement?

  A small car meshes with a large truck in a futet s p14a8)9rh iqdv/g: ;xhead-on collision. Which of the following statements concerning the magnitude of the average col9 d/:g u;8pirxse4avh1 ttq f)lision force is correct?

  Two equal mass balls (one red and the other blue) are dropped from tzeeyj p,et9i(: vu9r x)uo *h,he same height, and rebound off the floor. The red ball rebounds to a higher pouti o9ez e,v*,(y:uh )9eprjxsition. Which ball is subjected to the greater magnitude of impulse during its collision with the floor?

  A Ping-Pong ball moving eas,afj *+ycb ) vy2nffi;t at a speed of 4 m/s, collides with a stationary bowling ball. The Ping-Pong ball bounces back to the west, and ,b2)fv*injfya+y;c fthe bowling ball moves very slowly to the east. Which object experiences the greater magnitude impulse during the collision?

  Two objects collide andsn 8hh;;yyc d ga)9+tl bounce off each other. Linear momentum

  A 3.0-kg object moves to the right at 4.0 jp8 .plow 38ojm/s. It collides head-on with a 6.0-kg object moving to the left at 2.0 m/s. Which statement is cpo lo.jp w883jorrect?

  A 100-kg football linebacker moving at 2.0 m/s tackles head-on an 80-k w +7)k/3dv. uiy-h jksos3mnng halfback rn)3-k3v+ dmu ijn.k 7w /ssyhounning
3.1 m/s. Neglecting the effects due to digging in of cleats,

  In an elastic collision, if the momentum is conserved, then whf32r ii hr7zn4g 5y,,xzatc*t ich of the following statemezrrt f *2gn7,3 h5ai ti,4xzycnts is true about kinetic energy?

  When is kinetic energvg7p0e/ op4)su m/f tpy conserved?

  In a game of pool, the white cue ball hits tnm ta(frokxfz*759. f k1j7e 6 ebmn3kq.i.wdhe #5 ball and stops, while the #5 ball moves away with the same velocity as the cue ball had originally. The type of colf rwq(1ka3f5 fdnkoe7xtk 67i.9m j zme*nb.. lision is

  When a light beach ball rolling with a spee b5p7:bror7 8wwh; lood of 6.0 m/s collides with a heavy exercise ball at rest, the beach ball's speed after the collision will be, approx5l;obhwr77p 8:ow robimately,

  A golf ball traveling 3.0 mp c,lt w5e/9ll/s to the right collides in a head-on collision with a stationary bowling ball in a friction-free environment. If the collision is almow9 l5ll,pce/ tst 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-on elcm6m,cx :r j;h8ik mw5l2 h5hqastically with an identical ball at rest. What is the speed of thecmm hhq,i5 x m65;kjc8w:rl 2h initially stopped ball after the collision?

  A very heavy object moving with speed v collides head-on with a very 0l(x jh;2/(qifcfida light object at 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 collld ; hai/iq(xj0ff(c 2ision?

  A very light object moving with speed v collides head-on witho;*heqj 1 m)-ngs5y6,c;nz vhr*cvs c a very heavy object at rest, in a frictionless environment. The collision is almost perfectly elastic. The speed of the heavvs; 6nnj hzm*) 5;-qv*crec,gyhsc o1y object after the collision is

  A red ball with a velocity of +3.0 m/s collides hb1- / ivp7a( jayinx 1+rv/*asr5omapead-on with a yellow ball of equal mass moving with a velocity of -2.0 m/s. What is the velna5m asi/ p r-*pvya+7oij x1a/r(v1bocity of the yellow ball after the collision?

  A very heavy object moving with velocity v collides head-on with a very light fkk cc+6c ;zba.gie7; object moving with velocity -v. The collision is elastic,ick7 cke;azcbf;g+6 . 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 i49x i(2out7n rric 7jss conserved, then which of the following statements is true about ix2(u j cor7i9nt74rskinetic energy?

  Two objects collide and stick toget (eer*6hu*0o o tt,vjrher. Kinetic energy

  A 3.0-kg object moves to the right at 4.0 m/s. It collides in a 1 shpn23-hqz5 k2.lvc,ygfxr q i d/+kperfectly inelastic collisv,ysd c.xi1fn2q h q2lk5/-p hk3g zr+ion 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 largewtv/k1wq)4z a:am xm; object and sticks. Which object experiences the larger mqa 4k/1zv;: ) twxmwamagnitude of momentum change?

  In a game of pool, th1 sggjes3c0 ;ve 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 fol (57w b8ykjdxelowing statements is fals8b kwe7( 5jyxde?

  Which of the followiuv q..0d- nb*gc4xyht ng is a false statement?

  Tightrope walkers walk with a long flexible rod in5*,fxn dxkz*t order to

  A plane, flying horizontally, releases ablr. ): 2vmat/kfy: eb bomb, which explodes before hitting the ground. Neglecting air resistance, the center of mass of the bomb fragments, bemat lr.:yf 2/v ):kbjust after the explosion

  Two cars collide head-on on a level friction-free rm9 pm))qpae.:ufu d1doad. The collision was completely inelastic and both cars quickly) deap.q:umdm fp)u19 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+hy)6m4aes +lyux+q a system of particles.

  What is the momentum of a 2000-kg trucg7m60h8- srqf x.b1rzdgbp.uk traveling at 35 m/s?

  A 1200-kg ferryboat is moving south at 20 m/s. Whanjio .0ociy5+dy0 pz;wp .d8:ou*aho t is the magnitude of its momp.i0.d5a8cznod o ;h*j i:ouyp+y wo0entum?

  A ball of mass 0.10 kg is dropped from a heig0dk --cx)8qcuu v9ijz ht of 12 m. Its momentum when it striudq8zkc)9ivc0 j--x ukes the ground is

  Two identical 1500-kg cars are moving perpendicular to eacqy8w-y;50hmfm6sr l t;c rph )h other. One moves with a speed of 25 m/s due north and the other moves8q)fhhy- m r5 6crst0 wlp;ym; at 15 m/s due east. What is the total momentum of the system?

  A handball of mass 0.10 kg, traveling horizwtzg hamj;f7hk5 w1o*i4m 7 ,eontally at 30 m/s, strikes a wall and rebounds at ohmma* 7,5g wf ;tikh417zjwe24 m/s. 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 strgn1 1w0efg nw1uck by a rafge01nwng1w 1cket causing it to rebound in the opposite direction at a speed of 18 m/s. What is the change in momentum of the ball?

  A 50-kg pitching machine (excy1omubdjfw *,z/xy9 ft-m(4 h 2x1fh aluding the baseball) is placed on a frozen pond. The machine fires a 0.40-k/jd24x-ffybz1hm h xa 9 ,t*mf uo(w1yg baseball with a speed 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 space-walking outside oottqv,nkehrp..e6a +2o9x 2/ xqj 5uthe space 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 speed of 14 m/s away from the capsule. At what speedxt e2j.uqtoa5hv+ one.o/p r xq, k962 does the astronaut move toward the capsule?

  A small object with momentum 5.0 kgm/s approaches head-on a lxhz j pa8n *(/8f/1lvbjeptv66 thk;carge object at rest. The small object bounces straight back with a momentum of magnitude 4.0/z a886(6vbl1 nt;phtevpj fkxhjc*/ kgm/s. What is the magnitude of the large object's momentum change?

  You (50-kg mass) skate on ics14/ruvvmo c;/)mh t ae at 4.0 m/s to greet your friend (40-kg mass), who is standing still, with open arms. As you collide, while holding each other, with what speed do /o 1rvtc)ma/m u4v;s hyou both move off together?

  A car of mass 1000 kg moves to the right along a level, straight road at ari glj)mbc ib7:c)pa021 v wd5 speed of 6.0 m/s. It collides directly with a stopped motorcycle of mass 200 kg. What is the total momentum after the coll5bvdr)i b2mip0lc g1:j)aw 7cision?

  A 1000-kg car traveling at 25 m/s runs into the rear of a stopped car that has 1 3gti0fo.;s zh8 krpqa mass of 1500;hqfz sg1p.ri803o tk kg and they stick together. What is the speed of the cars after the collision?

  A railroad freight car, mass 15,000 kg, is allowed to coast alongir 3)5y6z 4 as u5kn7xic;nwrf d4wi-m 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 brakesi au6w;53s4fy5irk7w) xrn-4dimc nz released. What is the speed of the two cars after coupling?

  A railroad car, of mass 200 kg, rolls with negligible friction on l051k tc gaqd 0h*g-ica 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 car. How fast will the carg10 *0qg5htka c dlc-i be moving after this happens?

  A 60-kg person walks on a 100-kg log at the rate of 0.80 m/s (with wr(2( (6r bhynzhko6qrespect to the log). Wit(o(b 6zhw6 hqkr (nyr2h what speed 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 to 15cxtt7h oyf8i6p 6n6o( N and acts for one more second. What io76n(px 66ct oft8yhi mpulse was imparted by these forces to the object?

  A constant 9.0-N net force actswq/6u q7e1qu u for 2.0 s on a 6.0-kg object. What is the object's chaq 7u6q1wuue/qnge of velocity?

  A 2000-kg car, traveling to the right at 30 m/s, collides with a brijfwt/o9k;:ym-:+ gdfr3 ,u liw jpj0wck wall and comes to rest in 0.20 s. W fpmjk+:;:fj/w3wo, 0dtwr9gil-jy uhat is the average force the car exerts on the wall?

  A 2.0-kg softball is pitched to you at 2s- lgnr+hq+o+vxq+ ,eutbw 450 m/s. You hit the ball 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 x,v +gu q4bswtronq el+5+h+ -the magnitude of the average force the bat exerted?

  A 0.10-kg ball is dropped onto dguda *aes4nqz 2bt3 4jr8ui1 6-dc x-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 magnitude of the average force exerted on the bal sbde-gtj4* a8q46d2xcd3zrauu- n1 il by the table top?

  A machine gun, of mass zk* woomh /hfq9: t84ojxey ,4 1b;mx(m x.eej35.0 kg, fires 50.0-gram bullets, with a muzzle velocity of 750 m/s, at the rate of 300 rounds per minute. What is the avero e jf;y8(e4xhxkx1mm e/*. t9o4j,oqw b:mzhage force exerted on the machine gun mount?

  A fire hose is turned on the doov q q,hd2p+f o0jz0ha7r of a burning building in order to knock the door down. This requires a force of 1000 N. If va00o qq7fd+p h2 j,hzthe 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 drainv5ul m 2gpm2s-pipe at the 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 exert on the gl-v25mgm2p s uround?

  A toy rocket, of mass 0.12 kg, achieves a velocity of 40 m/k-d kem6lzs3 e09d(sl s after 3.0 s, when fired straight up. What average thrust force does the rocket -ld03ksl zkem6s9 d(eengine exert?

  Two astronauts, of masses 60 kg and 80 kg, are initially at rest in opv w9q vx1p-qdby)l16sz,l )duter space. They push each other apart. What is their separation after the lighter astronaut has moved 12 m?qvqxpb v s)9ypl116ddl-,)z w

  A 3.0-kg object moves to the right with a speed of 2.0 m/s. It collides inr ap vn./h1i,r tfj5(j a perfectly elastic collision with a 6.0-kg object moving to the left at 1.0 m/s. What is the total kinetic energy after thej1 h5rajt.p in(/ r,vf collision?

  A 0.10-kg object with a velocity of 0.20 m/4s 88vo+ td3yfsmnq uicq .(6ys in the +x direction makes a head-on elastic collision with a 0.15 kg s 6miuc q38q.+48tyysnf(vodobject 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//c)e:*u *2en cbt nkozs 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 origi/ k*ee:no2 )*ccn tbzunal speed. What is the velocity of the block right after the collision?

  A proton, of mass m,(1q i8ey *budj bf;h) q(6lt2ubk: avl at rest, is struck head-on by an alpha-particle (which consists of 2 protons and 2 neutrons) moving at speed v. If the colllu )(utbh:qdy;1jlqi2e 6(vb8 f b*k aision 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 n-nwl3 y*h*u jball of mass 100 g. The collision is elasticu*-j3yh*lwn n. What is the speed of each ball immediately after the collision?

A ball of mass 400 g moving toward the east with ak , -nomyj1w:v speed of 3.70 m/s collides head-on with a 200 g -:yon,jw m1k vball 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 a speed of 5.0 m/s. c)rsp3af )7q6 gn/kmj It collides head-on with a 3.0 kg mass at rest. If the collision is perfectly inelas)nakp/ g7j6cmf 3q)rstic, what is the speed of the masses after the collision?

  A 2.0-kg mass moving to the east at a speed of 4.0 m/s collides head-on in a perjx+yl03 bh- zyfectly inelastic collision with a stationary 2.0-kg mass. How much kinetic e yz3h-yl0jx+b nergy is lost during this collision?

  A car of mass m, traveling with a velocity v, strikes a parked stak j12 ,f8irfwotion wagon, who's f r1jw io2,kf8mass 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 direction2dlpb+k ( lzf1 buries itself in a 2.4-kg block of wood a rest directly abov1flb2l k+z(p de 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/h eas ho,;x4fxua6ghc4z 2 87sb/ ,igwpqmut collides with a 3000-kg car traveling at 60.0 km/h south. The two cars stick together after the collision. (a ,gfz8xuwp4 ho ,2 cqs67i h/mgxb;4uSee Fig. 7-1.) What is the speed of the cars after collision?

  A 1500-kg car traveling at 90.0 km/h east collides with a 3000-kg r +h mlj z/vd++ (2:jgik r-iyzd:lqu9*hfa4c 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 after l /4 zi:-rq ymci2:gu +zf9 hlrv+j*(jkad+hdcollision?

  Two objects move on a level frictionless 2vipflsw n8/8surface. 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. Wha8 2vin p/lwfs8t 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 4olq mf74g5mh1axelhj/jl9g 5i2l a -0.0 m/s. alloiqmlg m-5jah1 27fj/ 0eg549 x lhIt 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 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 massu5fk z -w ; vnkpd*wrn0e+8u)c sits at x = + 21.0 m. Where is the center of mass r0n ;5u8k zdwn kcf*uw +evp)-on the x-axis?

  The center of mass of a two-particle system is at the origwt(-k10cyi duf dsjy005je, 1 swxom3in. One particle is locatj 0 kwm sjdw001s5ti3f,y edxu(1-o cyed 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 positio7)3-fevp/f5iulsu7lsn d mj *ned as follows: 2.0 kg at (0, 0), 2.0 kg at (2.0, 0), and 4.f*)7esi d- 5jf/ps v7ul unlm30 kg at (2.0, 1.0). Determine the coordinates of the center of mass.

  Three masses, 1.0 kg, 2.0 kg, and 3.0 gy6xgsdk3;szu id*h 2o7k7.ov*m 2 eikg, are located at (0, 0), (1.0 m, 1.0 m), and (2.0 m, -2.0 m), respectively. What xz 3*s dgy*7vkkd;oh7 2esio.6u2ig m 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-kg massfc( ;.kbyx *rm myxn06 is positioned at (12, 0). What are the coordinates of a 4.0-kg mass whichbx6yfmk n.c( r;0y xm* 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 posit-:yh9ybf nl z,ty6yc*ion of the CM of a whole leg including the fo6 f,y 9t *-lyzbycn:yhot when the leg is stretched straight out. Assume the person is 1.60 m tall.