What is the SI unit of mome fug+p:v wgb*c;/, dlcntum?

  When a cannon fires a cannvi(vp7yy5 /+ (bjklyr+oi3bzn*ui /p p:5e gfonball, the cannon will recoil backward because the

  A freight car moves along a we hl;h./qy, ze7esr.frictionless level railroad track at constant speed. The car is open on top. A large load of coal is suddenlyhewh ,e eqyl.;.zs/r7 dumped into the car. What happens to the velocity of the car?

  A child falls sideways off a sled while sledding on frictionless ice. Whxf g ixle4 k,o2)woh.2at happens tx ox,hf2.wklgo i)2 e4o the velocity of the sled?

  A rubber ball and a l55 z9( sf:ez mhk2whz(5ar ff6c7rlhuump of putty have equal mass. They are thrown with equal speed against a wall. The ball bounces back with nearly the same speed with which it hit. Thl z (z5:wz7(rr 6e2fshffhm5h5u cak9e 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 reprz( w +yrnp(da+esent its kinetic energy in terms of these two qnw( r(zyp+a+d uantities?

  If you pitch a baseball with twice the1w .t,qrh4)ovk*n5kl:y4tarr p5 fywne b. d9 kinetic energy you gave it in the previous pitch, the m *5 1ohrl)wftdk.5n. pkv :4,yq9rnywte4abragnitude of its momentum is

State Newton's second ua7ggzc6yj5 (d24b7bqetq;m l1 c/ pwlaw in terms of momentum.

State the law of conservation of mo)c-+fxli-v fmxrrx - jf *q jvi/nj-7ag1b;p9mentum.

  The area under the curve on a Force vergi5r- gkbe/ j/3x s7tu6 kt 9n3j*bkfmsus time (F vs. t) graph represents

  Which of the following is an accuratzg+g+3xtxhf n7 ed9-re statement?

  A small car meshes with a lart3 an0nfi wk*z4va/bu 4(l:g uge truck in a head-on collision. Which of the following statements concerning ta4lwvnz4 3*ga(fiu0 n:bt k/uhe magnitude of the average collision force is correct?

  Two equal mass balls (one red and the other blue) ar7f7fl 6 vztg ooalv-nat;//s )e dropped from the same height, and rebound off the floor. The red ball rebounds to a higher /-nll )/ v7tofvaaf7toz6sg; 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, collides with 1p a.sn5g2 n(*tabu lh:wgv qz2y+ :bha stationary bowling ball. The Ping-Pong ball bounces back to the west, and the bowling ball moves very slowly to the east. Whinta+*hb (lup yg:gb2az51vw2 ns .h:qch object experiences the greater magnitude impulse during the collision?

  Two objects collide and bounce off each othe64 (wi+ jhe .dx -wdm/ztifs2er. Linear momentum

  A 3.0-kg object moves to the right at 4.0 m/s. wf2 0mf3if44 q(mu ihzIt collides head-on with a 6.0-kg object moving to the left at 2.0 m/si 3fzfui2fm0hwm4( q4. Which statement is correct?

  A 100-kg football linebacker moving at 2.0 m/s tackles head-on an 80-kg halfback96 le50elx.5bdypg v g g.0ex9yed5gvblp65l running
3.1 m/s. Neglecting the effects due to digging in of cleats,

  In an elastic collision, if the momentd96knk enryywhy1 cl52901cw f3se. eum is conserved, then which of the following statements is true ab1ey ye 19n60 kr3ccse2w9dylnfkh w.5out kinetic energy?

  When is kinetic energy conservedxv5./lvc6zk t?

  In a game of pool, the white cue f/vah7o,1dyws,w o 4mball 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 colli14asm /f,,do7 whoyvwsion is

  When a light beach ball rolling with a speed of 6.0 m/s colliltg: e r0.3rakdes with a heavy exercise ball at rest, the beach ball's speed after the collision w0k :rat3.e glrill be, approximately,

  A golf ball traveling 3.0 m/s to the right collides in a head-on coll ;g/ w.pki,k(on oc:x-d vjqs-ision with a stationary bowling ball in a friction-free environment. If the collision is almost perfectly elastic, the speed of the,og--jnp ow:(k sv/ci;.xd kq golf ball immediately after the collision is

  A rubber ball with a speed of 5.0 m/s collides head-on elasticryq bfgl1+81 2xbvp +9jddju;ally with an identical ball at rest. What is the speed of the initi1y;bv2qx frbj1 gdu 9+jd8p+lally stopped ball after the collision?

  A very heavy object moving with speed v cob1tx87k9uk7qt*rzua9cu c 4 rllides head-on with a very 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 kx9u 7utzb41 u ktc 7rrq*c9a8the collision?

  A very light object moving with speed vy e1h/c7i2svk collides head-on with a very heavy object at rest, in21y7cvikh / se a frictionless environment. The collision is almost perfectly elastic. The speed of the heavy object after the collision is

  A red ball with a velociteygy me 8 0((qbfnb29obygg2 wp)/mi3y of +3.0 m/s collides head-on with a yellow ball of equal mass moving with a velocity of -2.0 m/s. (fib/(2gn9)oy8yp 0bmy 3 b2 ewqggmeWhat is the velocity of the yellow ball after the collision?

  A very heavy object moving with velocity v collides hvtd2o.f+whma 3o5 kus .ih b*.ead-on with a very light object moving with velocity -v. The collision is elastic, and there is no friction. The heavbf+ h. o.oa*mh5.ktu2iv swd3y object barely slows down. What is the speed of the light object after the collision?

  In an inelastic collision, if the momentum is cyp4oxc g.x b)o/eoa hq: 9,ga(onserved, then which of the following statemen a/go4,:ceo) 9 ga.yh(xbqxopts is true about kinetic energy?

  Two objects collide and stick +v;oov *byi wbzia:*2together. Kinetic energy

  A 3.0-kg object moves to the right at 4.0 m/s. It collides in a perfe;,7ht zv nyw;pzez 04yctly inelastic collhnwt z;zyp7 z4 y;v,0eision 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 a3 c2k5 lkq2chond sticks. Which object experiences the la 3c5q2chlok k2rger magnitude of momentum change?

  In a game of pool, the white cue ball hits the #9 b 6zhwl7oas ak ;(xs6;9qv s(mball 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 statement6ov7v, :i zd64*artbicoov5w kl 3.mfs is false?rt v3cd4v*z6b6vo7 ioo lk:, .f5 maiw

  Which of the following is a false stk: 4mml j,ls -b(/mixs /urxb7atement?

  Tightrope walkers walk with )4j);uftqy5 nds+ hz ka long flexible rod in order to

  A plane, flying horizontally, releases a bomb, which explodes before c0dc8. 7se( ggrxv+hgj ly pv7(9 s9vahitting the ground. Neglecting ai jc9g97 g7cl+ s vsevdyv(x8gp.ha(r0r resistance, the center of mass of the bomb fragments, just after the explosion

  Two cars collide head-on on a level frictb owu(vi 2krzqi;7s rm5s4*3j ion-free road. The collision was completely inelastic and both cars quickly came to rest during the collision. What is true about the velocity of this systemi ms3qirw*;2 srkv 4o uzb7(5j's center of mass?

State Newton's second dsvrnbs2)2t49ragm ) 6m b0n2h)ic pnlaw for a system of particles.

  What is the momentum of a 2000-kg truck traveling at 35 m/(2u6 u:e jw+ak cv-m0j4lo f5r )oqgfds?

  A 1200-kg ferryboat is moving south at 20 m/s. What is the magnitude og k xi5ei ):f1;.5wduziceug 55f-mr bf its momentume)5fgi x r:i-bd5z em5c 1iw.k;5u gfu?

  A ball of mass 0.10 kg is dropped from a heigh s7 5ti 1;jqmsl+7eawupx.ur1t of 12 m. Its momentum when it strik7ms51ie+squj1par; ul .w t7x es the ground is

  Two identical 1500-kg cars are moving perpend5 ., :yqvsicwqlxhtt ; ;n-kk;icular 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 momentuqk yhw5, ; .:clkt;ix;v-s qtnm of the system?

  A handball of mass 0.10 kg, travel8) swjyv0ms/l .,s 0ankhw *hting horizontally at 30 m/s, strikes a wall and rebounds at 24 m/s. What is the change in the momentum of the b0j wssls ,0v tm8.hhan w)*k/yall?

  A 0.060-kg tennis ball, initially moving at a speed of 12 m/s, is struck b87wm;-v e uvx q9j5p tnylo;p1y a racket causing it to rebound in the opposite direction at a speed of 18 m/s. What is-5v w ;v 7otp9ylp8eu;j1xmnq the change in momentum of the ball?

  A 50-kg pitching machine (excluding the basebagpke ,p-ko jazq ;)j;-ll) is placed on a frozen pond. The machine fires a 0.40-kg baseball with a speed of 35 m/s -),ejjz q-;;ko ppkga 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 space capsule and is stationaryr m qyw4 4ho-+7 bmetkm;zyu:/ when the teth7m ;urko4wt-q:mzy+e 4m/bh y er 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 approaches head-on a large object at re cg*fwos;b9kg2/ ex6ost. The small object bounces straigh6o2s fgkwcb*9 exg/; ot 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 4.0 m/s to greet your friend (40-kg mass), who n*m nqij9:sb 1 *jf kwl7w--o(8kcxoo is n:1kn9j8wf-qo is jx*c kmo7bol (* -wstanding still, with open arms. 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, straigh. errss )+vm.wt road at a speed of 6.0 m/s. It collides .mr+ve )r.ssw directly 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 o mwjt v )*75d( hi5j8tvg9yzuinto the rear of a stopped car that has a mass of 1500 kg and they stick together. What is yivjj*5wht ()u9z g8 tdv5om7 the speed of the cars after the collision?

  A railroad freight car, mae6 ./k3gsbnzr4 l w)zz:ywka;ss 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 iss/w4b:)ezrzankzw;3. y g kl6 the speed of the two cars after coupling?

  A railroad car, of mass 2k- f08r3ot3bfppjiy i)isf / 000 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 car. How fast wi30tf- ikpi8oi/3b0 jsf y) fprll the car be moving after this happens?

  A 60-kg person walks on a 100-kg0 0u /c0 ymiixb*,vltk log at the rate of 0.80 m/s (with respect to the log). With what speed does the log move, with respeibtx/ ul0,cvky0 0 im*ct to the shore?

  A 4.0-N force acts for 3.0 s on an object. The f k -vcxi by+duy/(7qs5orce suddenly increases to 15 N and acts for one mor+( s y5v-x7iyucdb/qke second. What impulse was imparted by these forces to the object?

  A constant 9.0-N net force acts for 2.0g18,naydip6e 8 lj9xy s on a 6.0-kg object. What is the object's change of 889,y6a1e dxj ilynpg velocity?

  A 2000-kg car, traveling to the 7joxbwy 7/+u1l3qnh b right at 30 m/s, collides with a brick wall and comes to rest in 0.20 s. What is the 1 wl7o37u/jh y+ bqbnxaverage force the car exerts on the wall?

  A 2.0-kg softball is pitched to you at 2 /z6xox)u3mpx0 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 the magnitude of the average forozxmp xx6 /3u)ce the bat exerted?

  A 0.10-kg ball is dropped onto a table top. The speeds of the ball right beo7egsz dou 9.*bt; 0uwfore 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 lat*gb7;0 .osweuz ud9o sts 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, mj0zqj hp(+dcu)nu, p.2e u;*xb(l ob fires 50.0-gram bullets, with a muzzle velocity of 750 m/s, at the rate of 300 ro,(qx)b; l* uunj0e(p.hudm2ob p+j z cunds per minute. What is the average force exerted on the machine gun mount?

  A fire hose is turned f6e 0iw p4ajv( cf2t-hgfhoz;9-. tvgon the door of a burning building in order to knock the door down. This requires a force of 1000 N. If the hosetv-o at-fcz0g;f2e gp. j4h(6 hifw9v 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 the rate of 120 kg per minucjv)8xfeybm: g 7. zq8te. It falls 3.20 m to the ground. Assuming the water doesn't spla 8:qmcjye8)7 bf.g zvxsh 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 kr1v9s0trzv68 jlro-8fgw4tw 0mg /tafter 3.0 s, when fired straight up.jtt4-f0t6zsrm19 8/rlkv0 gwv8r wo g What average thrust force does the rocket engine exert?

  Two astronauts, of masses 60 kg and 80 kg, are initially at q yfv:sxwzz/5/b *f,frest in outer space. They push each other apart. What is their separation aff:qvxz*y5z/bsf/ f ,wter the lighter astronaut has moved 12 m?

  A 3.0-kg object moves to the right with aa27zumt4)mb k x vor7;s1gd p- speed of 2.0 m/s. It collides in a perfectly elastiubkm2r7d4so 1-; t)azgvpxm 7c collision with a 6.0-kg object moving 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 0.2sr e/ wz.b1.wy0 m/s in the +x direction makes a head-on elastic collision with a 0.15 kg object initially at rest. What is the final velocity of the 0.1.w bew 1r./szy0-kg object after collision?

  A 10.0-g bullet moving at 300 m/s is fired into a 1.00-kc ucoulty x;0q7ga8m(az, o1-g block at rest. The bullet emerges (the bullet l( gqxm,;coa10a c7y8uu-otz 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 an alpha-afu1h 0nwsd9ug 5iia 7mk,d8;particle (which consists of 2 protons and 2 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 thea f1u7 khud8, 0nwi9a5;mgs di proton's mass.)

  A 50-gram ball moving +10 m/s q5*4xkdlhovuo w2ed m60ezva9391 ekcollides head-on with a stationary ball of mass 100 g. The collision is elastic. What is the speed of each ball immeov3oqah9mk4u1 5keew * 2vded0xlz69diately after the collision?

A ball of mass 400 g moving toward the east with a speed vvalo a9hwet25 5 ;gwro6fo2/of 3.70 m/s collides head-on with a 200 g ball sitting at rest. The cw5hfoata/wgv;56 lo o e292rv ollision 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 gwqo drz7,b1 .n0/nqicollides head-on with a 3.0 kg mass at rest. If the collision is perfectly inelastic, what is the speed o,zdq q./w 7nnb1gri0of 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 pex4ce 8o b6 ydbbs7gw02rfectly inelastic collision with a stationary 2.0-kg mass. How much kinetic energy is lost 26bd 8bbxgso7w4y 0ceduring this collision?

  A car of mass m, traveling wi 40ueefi ho) ild*,iq.anf+6qth a velocity v, strikes 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 lost in thie)nqd04i* f al,e o+fhu i.6iqs collision?

A 15-g bullet traveling 213 m/s in ap8zj/d.bu,-u3iam fd 9lwgh. g z/wk) vertical direction buries itself in a 2.4-kg block of wood a rest directly above it. As a result, the bullet/block co.djml wp.kz/uz -)gih ,g9 w/ 8bduf3ambination 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 90.0ecq-5afs ;o u/9yp1pz km/h 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 the cars ous;p z-caf 1pyqe /59after collision?

  A 1500-kg car traveling at 90.0 km/h east collides with a 3000-kg car traveling :4wj kki2+ lffat 60.0 km/h south. The two cars stick together after the colli2f k w+f:jl4kision. (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 bu f8-raj95jwy/pi2r east with a momentum of 24 kgm/s. Object B moves north with momentum 10 kgm/s. They make a perfectly inelastic collision. What is the magnitude of their/r5y a2w8r9pfj- j iub combined momentum after the collision?

  A small bomb, of mass 10 kg, is moving toward then6z4o 8tqgr) o9q i. eg-nfeh4 North with a velocity of 4.0 m/s. It explodes into three fragments: a 5.0-kg fragment moving west with a ti qzgeq46 h-neon 4fro.8)9gspeed 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 = + 21.0 m. Whersqartv5tv-ts30 *sz )e is the center of mass on the x-a5t z0s)stsv3vr q-t *axis?

  The center of mass of a two-particle system is at tq./*rm0:yf6 79d v1gzb,h ygawhfqjthe origin. One particle is lbg* g0q:fhrvz,6qy7j9y mf1.dh a /wtocated 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)kxbmo4 c vuj1 4 9lasl;xw;16f, 2.0 kg at (2.0, 0), and 4.0 kg at (2.0, 1.0). Determine the coordinates of the cenu1fkxv1m9 ll6aoxs ;wb4j4c ;ter of mass.

  Three masses, 1.0 kg, 2.0 kg, and 3.0 kg, are lockid bq p ns/i)4du ut3w,:8ss.ated at (0, 0), (1.0 m, 1.0 m), and (2.0 m, -2.0 m), respectively. What is the locatius,:8 .niw)d sb3uqt/ spk4di on of the center of mass of the system?

  A 3.0-kg mass is positioned at (0, we5igy1f 7 p :r6k7bzh8.0), 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 of7i7ygp5 z f1w6rbh k:e the system of three masses being located at the origin, (0, 0)?

  Use Table 7-1 to calculatw464i16 f fucqz,q ty /+vwyare the position of the CM of a whole leg including the foot when the leg is stretched sya vfut,f qwrq6+61wyzc i4/4 traight out. Assume the person is 1.60 m tall.