What is the SI unit of momen(p y lb69;ljcvtum?

  When a cannon fires a cannonball, the cannon will recooi8vkse d .f39k3x.rdil backward because the

  A freight car moves along a frictionless level ram/nrcp( 1x: tfhib v3:ilroad track at constant speed. The car is open o1(: /t :mihc3vpxb fnrn top. A large load of 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 frictionless ice. Whaq(9y19b 3cn,) bp qednl7zz kkt happens to the velocity of the sln9 7zbk,yq n3qpebkc l(z)9d 1ed?

  A rubber ball and a lump of putty have equal mass. They are thrown wiynu 6-w* rgnhz7-wpst28m (k j y;3oesth equal speed against a wall. The ball bounces back with nearly the same ns728wysnh6*m ;yko 3pt jw-er-g(uzspeed 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 represent idh516e3puva zp.w3zb ts kinetic energy in terms of these two quantitiesh bv35.e31dazw pp6z u?

  If you pitch a baseball with twice the kinetic energy you gavedz* mjsnb,0t5 it in the previous pitch, the magnitude of its b5zmj sn, t*0dmomentum is

State Newton's second law in tewy1x7oc( 1fte.xowy5 ppk2 b;rms of momentum.

State the law of conse/op8f. q;nbk4 whm:y u jd+wm7rvation of momentum.

  The area under the curve on a olf z )t8qh b(rhzg g.-md7:-t:lo,jmForce versus time (F vs. t) graph represents

  Which of the following is an acc- o;o:8yjyqfa: .w +a) arhikmnwdx1-urate statement?

  A small car meshes with a large truck in :l 7b w*k1gz+ mnp pt-p-nho.ha head-on collision. Which of the following statements concerning the magnitude of the ave hh -wpb1nk :7+np-zlm p.tog*rage collision force is correct?

  Two equal mass balls (one red and the other blue) are dropped from the sai y.i33ai c 9efw3n)xkme height, and reboundy 3i. i3 w)ain9cfx3ek off the floor. The red ball rebounds to a higher position. 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, c6/elmb,vy gn5)+t hd.7aacniollides with a stationary bowling ball. The Ping-Pong ball bounces back c6mg t.a/)yhlv,na5+d enb7i 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 bouzcnhh)t6b aiu k6)m(k: ea b4z7u j*-fnce off each other. Linear momentum

  A 3.0-kg object moves to the right at 4.0 m/s. It 2 oyn72 hha. til-ne5xcollides head-on with a 6.0-kg object moving to the left at 2.0 m/s. Whica5lnh2 oheti7 -y.2nx h statement is correct?

  A 100-kg football linebacker movingi32nyq,c, y )1wqa b)6jjwv oe at 2.0 m/s tackles head-on an 80-kg halfback ru bc,yv1 j)q,3)2ijnyw e qw6oanning
3.1 m/s. Neglecting the effects due to digging in of cleats,

  In an elastic collision, if the momentum is conserved-/mdycr (m n1pk:6 nsq, then which of the following statemny:r nd qp(- ckm16/msents is true about kinetic energy?

  When is kinetic energy conserved?m)vb;- xzilzn uw. f2:r9zsu+

  In a game of pool, the white cue ball hits the #5 ball and stops 3 q(cip6f(hi awzr3 /.a6,ug ay)ussf, while the #5 ball moves away with the same velocity as the cue ball had originallqaf( w6a 3/ur )hz6p .3(a iicsgusfy,y. The type of collision is

  When a light beach ball rolling with a speed of 6.0 m/jf mbfxi 7(/2(j3m-m ( beopsws collides with a heavy exercise ball at rest, the beaip(bm/sb73ojmwfmx2 (f( j -ech ball's speed after the collision will be, approximately,

  A golf ball traveling 3.0 m/s to the right collides in a healp4yel3ky ghc789,fxe c3rc3d-on collision with a stationary bowling ball in a friction-free environment. If the collision is almost perfectly elastic, tc7, 3cx 3rhecy8kp 3l4gely9f he speed of the golf ball immediately after the collision is

  A rubber ball with a speed of 5.0 m/s collides o-27z3r2ffnt jnin+y 8k ozj2head-on elastically with an identical ball at rest. What is the speed of the initially stopped o zokf2z 22 -tijn+nny3jf87rball after the collision?

  A very heavy object moving withus)b5l ydh8 : 0x3guvz speed v collides head-on with a very light object at rest. The collision is elastic, and there is no friction. The he8d:0ulg sxyu5bv 3zh)avy object barely slows down. What is the speed of the light object after the collision?

  A very light object moving with speed v co yveps.fo-r99 llides head-on with a very heavy object at rest, in a ff-9v eryp.o9s rictionless environment. The collision 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 collides ehse3 kh0 txe0x40 )gphead-on with a yellow ball of equal mass moving with a velocity of -2.0 m/s. What is the velocity of the y0se eet3hpxxk0) 0g4h ellow ball after the collision?

  A very heavy object moving with velocity v collides head-on wvr/ 8lgq3 qg0pith a very light object moving with veloci 308rvlgqgq/ pty -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 colli3u,kz*epe* ssfg4 in8n5;h z u xcyo+.sion, if the momentum is conserved, then which of the following statements is true abouo;fi*e*yshnek3g5n. s c+8zu ,4zxu p t kinetic energy?

  Two objects collide and stick together. Kinetic en zt5zlcxt7hzliemg),hz 4)7o .ew,s ,ergy

  A 3.0-kg object move;q x. z,x2 t3yevvk a1wb1vr;ss to the right at 4.0 m/s. It collides in a perfectly inela3e; ,kzs 2xyab vv;wrv 11xq.tstic 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 collideh,r80fcrn5hc1 o* f bb7 nw)des with a large object and sticks. Which object experiences the larger magnitude of momew8bc)* chbr71 fefhr ,n0 n5dontum change?

  In a game of pool, thu1nn dna75 9nre 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 ma,gni4bj uh ,8ozb53x qsses, M and m. Which of the following statements is false?uh5 q8 ,zn3joixb,4 bg

  Which of the following is aq e.an/0cxxt3: sc 4gr false statement?

  Tightrope walkers walk with a long fleuc; .ch,*n9d isrdqh7 xible rod in order to

  A plane, flying horizontally, releases a bomb, which explodes before hitting t 1e0 -vd d/ s*wceevk47zue/xghe ground. Neglecting air resistance, the center of mass of the bomb fragments, just afte/7/ *v g u14vedce eewzk-dxs0r the explosion

  Two cars collide head-on on a level friction-free roadzs2-qaq5 7v cw1)ljvmd+ w(pe. The collision was completely inelastic and both cars quickly came to rest durd(- z el )1mpas 75jvvq+wcw2qing the collision. What is true about the velocity of this system's center of mass?

State Newton's second law for a syteh hevv5/g . l.8pv(h rmk* xn21c-pbstem of particles.

  What is the momentum of a 2000-kgee:, nd+fuh+m;oims 8 truck traveling at 35 m/s?

  A 1200-kg ferryboat is moving south at 20 m/s. What is the magnitude ofvd0c -t d*p 42jp.:cdfmy7jtoq.0jw s its momentu*qj4c -. 07:fywpd jd0cttd s .jo2vmpm?

  A ball of mass 0.10 kg is dropped from a height of 12 m. ok-nq-lcsptn1l h9k/. eu0a ; Its momentum when it sh ul 0epkcak-q;/1- .9nnsolttrikes the ground is

  Two identical 1500-kg cars are m q(-5aq ba-rreoving perpendicular to each other. One moves with a speed of 25 m/s due north and the other moves at 15 m/s de aa-b(rq-5r que east. What is the total momentum of the system?

  A handball of mass 0.10 kg, traveling hor.9sn2hju 4dcqizontally at 30 m/s, strikes a wall and rebounds at 24 m/s. What is the chang 2sdjc9nu4 q.he in the momentum of the ball?

  A 0.060-kg tennis ball, initially moving at a speedfd(rtfyl2dxd3d r::8 )bhs3p of 12 m/s, is struck by a racket causing it to rebound in the opposite direction at a speed of 18 :3s3 d(xfr8 d:hyl2 f)tdp brdm/s. What is the change in momentum of the ball?

  A 50-kg pitching machine (excluding the baseball) is placed on a frozen pont0+7c6a9 txyno ogx. 9inkrsj-t-p6dd. 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 negligiblesdro0 ttjg79yx-nn xac 66-tkpi 9+ o. friction.)

  A 70-kg astronaut is space-walking outside the splr ;*(ith; vvsace capsule and is stationary when the tether line breaks. As a means of re st*;v(vhr il;turning 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/sr.y:l bs on)xtop95)k approaches head-on a large object at rest. The small object bounyobon):.p r5)xkl9t sces straight back 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 2 aty;+zq ;xtw4.0 m/s to greet your friend (40-kg mass), who is standing still, with open arms. As you collide, while holding each other,2 +;qwa;xtzty 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 spee etek g zhtplh e+.9v33y*(rq-hsm,l .d of 6.0 m/s. It collides directly with a stopped motorcycle ofke e3glp-mhhl yts(e9.,*ztv hr.+q3 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 haj /+f0tlm6z wy a2t3rls a mass of 1500 kg and they stick together. What is the speed of 6zla2+wtrf 0mlj3y /tthe cars after the collision?

  A railroad freight car, mass 15,000 kg, 4e bej0qo+v1dx,c+ m ais allowed to coast along a level track at a speed of 2.0 m/s. It collbc do4a1e +qexj,v0+ mides 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 mass 200 kg,omzb;1.mn wi;i vky37 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 car. How fast will the car be moving am3vb 1k7i y;.zonwi;mfter this happens?

  A 60-kg person walks on a 100-kg log at thex dnrf4opx 7s8*je;)r rate of 0.80 m/s (with respect to the log).*d 7; e)snjor 8p4xxfr With what speed does the log move, with respect to the shore?

  A 4.0-N force acts for 3.0 s on an object.mtnq fu yr.o,ci+7p .vd7v5n( The force suddenly increases to 15 N anp+5 vtcn,.(or7qf n y.dmv7i ud acts for one more second. What 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. W t ,eu) 7;gjt9matirxrb60sy3 9 +tevthat is the object's change +0 9t7tt6mt;g,yrvi3 tb) e rx9eausjof velocity?

  A 2000-kg car, traveling olomnmfgzv-5md c :u690o5ya0s djno;s : /8ito the right at 30 m/s, collides with a brick wall and comes to rest in 0.20 s. What is the average force the clfuoo6 8;m c:modv0s 5dni9z-0 5n/jyo ma g:sar exerts on the wall?

  A 2.0-kg softball is pitched to you at 20 m/)glj; 0wq n6 /)obi5:pb,m9*lshb r 7wgkkxjfs. 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 the mag5)06 bjg/9)rklg7lwipwq fb,* k mxh o js;nb:nitude of the average force the bat exerted?

  A 0.10-kg ball is dropp)-yf2tvk) hzp ed 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 collisiovkpz y-)h tf2)n 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, w*b tjl fl(ho 2xkz t2)i0;9hlfires 50.0-gram bullets, with a muzzle velocity of 750 m/s, at the rate of 300 rounds per minute. What is the average foojlwfl2; k( * blt 9t)h2izhx0rce exerted on the machine gun mount?

  A fire hose is turned on the door of a burning building dw:s ) fie+ xwy.n( q25(teg(d: kzmsdin order to knock the door down. This requires a force of 1000 N. If the hose delivers 40 kg per se ywsdq(ng) : st5idkd mf:.z2(e(xe+wcond, what is the minimum velocity of the stream needed, assuming the water doesn't bounce back?

  Water runs out of a horizontal drainpn,:g ;tih 2l4v tjdl2fipe 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 2vli4dhjttf;l , 2g:n does it exert on the ground?

  A toy rocket, of mass 0.12 kg, achieves a velocity of 40 m/s 3tjk2sqhz*c ukv .lu +vd1 dc ja36h/,after 3.0 s, when fired straight up. Wha ql acvj /,+cj2k u16hd3uz kh.d3*tsvt average thrust force does the rocket engine exert?

  Two astronauts, of masses 60 kg can1vhe80 5no 6ya2 as:xr,5 hm3k.t ctpoo1tand 80 kg, are initially at rest in outer space. They push each other apart. What is their separation after the lighter astronaut h ht c1asvh36an8cxmkn,0pr5y5oo:o te 1a. t2as moved 12 m?

  A 3.0-kg object moves to the right with a speed of 2.0 m/s. It collides in ahu) i0nkup0qb1fw;*y 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 theufbwhup 1y ;iq0 )kn0* collision?

  A 0.10-kg object with a velocity of 0.20 m/s in the +x directionm / f+3gt1r q/hxvps4+hpt.n j,kbe-r makes a head-on elastic collision with a 0.15 kg object initially at /,rve /. tpr+n-pm s3tqfg+j1xkbhh4 rest. What is the 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-kgmto:u*xd+z4 lrg*b;mtf 1 7 zx block at rest. The bullet emerges (the bullet does not get embedded in the block) with half obxugx;1 l r 4dm:** +tf7zozmtf 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 an alpha- n8nw*g )j um9 2g0ygv.pw1 2,vfnejshparticle (which consists of 2 protons and 2 neutrons) moving at speed v. If the collision is completely elastic, what speed will the alpha-particle ham,gjw2 v1u9h*ng y jvne8sg 0wnf2p).ve 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 ba gzhouv 5l-.kux4+gy9ll of mass 100 g. The collision is elastic. What is the speed of each ball immeduz+ o94ul.hy gkv x5g-iately after the collision?

A ball of mass 400 g moving toward the east with a spe;w8f4dxm k i-r0a)vcy ed of 3.70 m/s collides head-on with a 200 g ball sitting at rest. The colliw;f c ki-axy)r4vd 80msion 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 jb*543z qx(nzwhzp dxb3d m6 *collides head-on with a 3.0 kg mass at rest. If the collision is perfectly inelastic, what is the speed of the massp5hz3 x djnqdb bmx *z*4z36w(es after the collision?

  A 2.0-kg mass moving to the east at a speed of 4.0 m/s collides he1t rmf9a* e,eead-on in a perfectly inelastic collision with a *f19eae ,mter stationary 2.0-kg mass. How much kinetic energy is lost during this collision?

  A car of mass m, traveling with a velocity v, strikjy8 jol q6ag, j 1mr1t;tyg7,kes a parked station wagon, who's mass is 2m. The bumpers lock together in this head-on inelastic collision. What fraction of the initial kinetic energy is lq;1myk gt6 roa jg 1,8jtyj,l7ost in this collision?

A 15-g bullet traveling 213 m/s in a vertical direction buries itself in a 2.4-sbg0aj xq4r3;kg block of wood a r0bj;gx4 3qsa 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/h e)ggi /s/9oeshi13gswda4ks2 ast collides with a 3000-kg car traveling at 60.0 km/h south. The two cars stick together after the collision. (See 1a 9)g/dggo/ki4hse32s s wisFig. 7-1.) What is the speed of the cars after collision?

  A 1500-kg car traveli47 nh).ntqv pfh)b 4kb h9c7qing at 90.0 km/h east collides with a 3000-kg car traveling at 60.0 km/h south. The two cars stick together after the collis)bi7hpcq hfv).tnh 9b4nk4q7 ion. (See Fig. 7-1.) What is the direction of motion of the cars after collision?

  Two objects move on a level frictionless surface. Object A moves east 9 bnp4u/66,y;+pjh if obcfkuwith a momentum of 24 kgm/s. Objec4hn kp6fuy pc/+obi, 69juf;b t B 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 with a velocity o w)k0)p-o :yzffdog 9fxb,hh(f 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 with a mass of 1.0 kg. What is the velocity of x, f 0(:)y f9h)-pkob hgwfzdothe third fragment? (Neglect air friction.)

  A 4.00-kg mass sits at the origin, and agy)c3+mky8m a.nu )0s 8wyntl fej,3u 10.0-kg mass sits at x = + 21.0 m. Where is tfunescmujy y )wt lkngy883.,)30+ amhe center of mass on the x-axis?

  The center of mass of a two-particle systeif+:.rpmt ,,ioc)o bvm is at the origin. One particle is l+: ir,f m)bio.p,ovctocated 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 at (0, 0):pnx n:paxlnh)xxtk vx3 ck2j506 m:( , 2.0 kg at (2.0, 0), and 4.0 kg at (2.0, 1.0). Determine the coordinates of the center of mass. nvxx6kjnpk atpn2c:m:(0) hx3x l5x:

  Three masses, 1.0 kg, 2.0 klxn)vioxrkt+ + 0hp*.g, and 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 locatiovitr +lhp0 * xkx+no).n of the center of mass of the system?

  A 3.0-kg mass is positioned at (0, 8.0), and a 1.0-kg mass is positioned 0giydgie e+k6 35;akbepc.g5 at (12, 0). What are the coordinates of a 4.0-kg mass which will result in thekc 5dg; 30beia keiep6.5gg+y 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 tseva :y8- cng0he CM of a whole leg including the foot when the leg is stretched straight out. ge sacv:-8yn0 Assume the person is 1.60 m tall.