What is the SI unit or * z*s5b4gd jc(a0tinf momentum?

  When a cannon fires a cannonball,znu(/zg3l)np (; wo:z,pk gy r the cannon will recoil backward because the

  A freight car moves along a frictionless level railrjmr83ns6ju xu xm(h 62oad track 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 of 63u82 n( m6ujsx rxhmjthe car?

  A child falls sideways off a sled whil 97:pma9h*rmb +uk, txgut:fpnnf;1le sledding on frictionless ice. What happens tor9f,;79btu+fpa :: lhk xmgm nu*nt1p the velocity of the sled?

  A rubber ball and a lump of putty have equal mass. Th5ysbybm.c( z )cn0pj5 ey are thrown with equal speed again.mcybns5p 5cz(0bj)y st 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 me 2bf+2wz 8e t2afpai6oving with a momentum p. How would you represent its kinetiab2ipfeaz+6t2 f we82c energy in terms of these two quantities?

  If you pitch a baseball with twi7 nq1y i7umobli;p7r,ce the kinetic energy you gave it in the previous pitch, the magnitude of its mom7 7u71qi;b i pmlo,nryentum is

State Newton's second law in terms of moment-;kiq+f 8jg4eqg ; kwzum.

State the law of conservation of momentue. q ht*4kxqg l*lq7p(m.

  The area under the curve on a Force versus tig2 squi*a,x)hx7 e.lq(2 jat1f aslz :me (F vs. t) graph represents

  Which of the following is an accurate state+ay ioc 1iy3dayi-lc:.5ke8) fe nkm,ment?

  A small car meshes with a large truck in a head-on collision. Which of thz; f1 eu1xry 0f0eww*me following statements concerning the magnitude of the rwxf 1e0f0eu ;m1yz*waverage collision force is correct?

  Two equal mass balls+ivup*.jhlvb4 :royz/wv mw. a45i-l (one red and the other blue) are dropped from the same height, and rebound off the floor. The red ball rebounds to a higher position. ipv4wo z+ymva5:bh- *./ 4ljv.iruwl 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 wit,+ft +ocpp4 yzh a stationary bowyfp toz4+c+,p ling ball. The Ping-Pong ball bounces back 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 bouncee nbo/ gqbyh);n /xg:0 off each other. Linear momentum

  A 3.0-kg object moves to the right at 4.0 m/s. It collides head-on with a 6.0-kjucb q e2(y(o(h7ol; yan7+fxg object moving to the left at 2.0 m/s. Which statement is corqb je( u+lnx;2f(7 o7 oa(ycyhrect?

  A 100-kg football linebacker moving at 2.0 m/s tacki0ou3xa5iv k; les head-on an 80-kg halfback runningkav3ix5o0;iu
3.1 m/s. Neglecting the effects due to digging in of cleats,

  In an elastic collision, if the momentum is conserved, then which of th;; 3lt*t) jzubs/. x8 hvv30zrarlfz ye following statements i)*.z urzy;;/z rftal j 3b30svvtl8xhs true about kinetic energy?

  When is kinetic energy (dapjxa+,9if(mw(ux +r /rrm conserved?

  In a game of pool, the whifr,bw n:5 wk4 1x:ytuxte cue ball hits the #5 ball and stops, while the #5 ball moves away wi4uk :5 ry t,w:w1xfbnxth the same velocity as the cue ball had originally. The type of collision is

  When a light beach ball rolling with a so /ynp k*y+r -*p1xbqfpeed of 6.0 m/s collides with a heavy exercise ball at rex byn/1+k rpypofq- **st, the beach ball's speed after the collision will be, approximately,

  A golf ball traveling 3.0 m/s to the right collides o si,hmr nf7jt;f.r ow-rz 3e9slp847in a head-on collision with a stationary bowling ball in a friction-free environment. If the collision is almost perfectly elastic, the speed of the golf ball immedjfr ;w8s.9ortr,7 e7pnhfi-zlm 3 so4iately after the collision is

  A rubber ball with a speed of 5.0 m/s collides head-on elastib 0gqxs 3nf:be/-d1;k xe fd5wcally with an identical ball at rest. What is the speed of the initially stopped ball aft5ndxgdfefb/b e3k1 qx-:s0w;er the collision?

  A very heavy object moving with speed v colli3+bljjizg 0r7 des head-on with a very light object at rest. The collision is elastic, and there is no friction. The heavy object barely gj+07brl3z ijslows down. What is the speed of the light object after the collision?

  A very light object moving with speed v c5gm qq-(gb+k.7fhlbmollides head-on with a very heavy objec+b.q 5bmkgg(hq f7m-lt at rest, in a frictionless 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 head-on with a yell;8en)m-gkbx vy*k 4khow ball of equal*kn ;bk8ye - x)vmhkg4 mass moving with a velocity of -2.0 m/s. What is the velocity of the yellow ball after the collision?

  A very heavy object moving with velocityx8jgk ge87 6x6l sfg3s v collides head-on with a very light object moving with velocity -v. The collision is elastic, and there is no friction. The heavy object barely slows down. What is the speed of the light f xl6gg 3je87xks8gs6object after the collision?

  In an inelastic collision, if the momentum is conserved, then which of the 0* g oae,czn7pv- v+mafollowing st-,0zaeamo7*c+n pvgv atements is true about kinetic energy?

  Two objects collide and stick together. Kinetb 1axth 8 btui*)+t:wr.(dkm oic energy

  A 3.0-kg object moves to the right at 4.0 m/s. It collides in a perf v 3cnq ws fz.39afpbjd;z ei-(st3),lectly inelastic colli)-zv;n 3lcetzfp, s siq( w.bj33a f9dsion 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 collid(ul iykk .e2d;es with a large object and sticks. Which object experiences the larger magnitude of ekidy2 k ;lu(.momentum change?

  In a game of pool, the whip bcym424 f6hite 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 mj ) 5jnk19oose. Which of the following statements is falsk1jso9n)o5j ee?

  Which of the following is a fal4c o4166s6pejuk tk cbse statement?

  Tightrope walkers walkd0vq 3. .z q2 ghumdz2+sbwjmc n/:gj) with a long flexible rod in order to

  A plane, flying horizontal*h g0qkk(q5ggky8dvb+ j-hv6ly, releases a bomb, which explodes before hitting the ground. Neglecting air resistance, the center of mass of the bomb -j*5 bvkgy q(qvg6hdkhg+ k08 fragments, just after the explosion

  Two cars collide head-on on a level friction-free road. The collision j5n pp6b(hqxw/cq/l;sp2h n ,was completely inelastic and both cars quickly came to rest durin5ph/nc,qqj ;bx slp 2n/(wh6pg the collision. What is true about the velocity of this system's center of mass?

State Newton's second law for a system of particles.*0/tm ;iv *t 9ljyxzhxpqru8;l x /ky/

  What is the momentum of a 2000-kg truck traveling v,)10hg 1 8lhoyc assi,(ta3jn qtv1eat 35 m/s?

  A 1200-kg ferryboat is moving south at 20 m/s. What isq/8e-* z9 x sjlj5adrxp9bik5 the magnitude of its moment 99klax * q/p -58rxsi5bjzdejum?

  A ball of mass 0.10 kg is dropped from a height oc, j j;w10 db nwdim9w7/ex4dff 12 m. Its momentum when it stwj j4wwf ,n 7/9e xddd01b;cmirikes the ground is

  Two identical 1500-kg cars are moving perel f.yp2f b9c0y.(o w 2az6ddbpendicular 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 mom aodl d.cbeyp92(2y 6f.0zbfwentum of the system?

  A handball of mass 0.10 kg, travexcit rz;2 c;myh6pidn a /7.8hling horizontally at 30 m/s, strikes a wall and rebounds at 24 m/s. What is the chan;7/ ; tp28n.xhcicdyahrm6 zige in the momentum of the ball?

  A 0.060-kg tennis ball, initially moving at a speed of 12 m/s, is struck gh8c.vg84u om by a rackec.g4um8oh gv8 t 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 tazi2u;e,v7p (excluding the baseball) is placed on a frozen pond. Thu;v2e ztp i7a,e 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 negligible friction.)

  A 70-kg astronaut is space-walking outside the space capsule :uq 8 ey0.b+pgulc7q dand is stationary when the tether line breaqe7.u+8p ldy0 c:ug bqks. 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 ijl a,gb/ dbhv8+*5fh/s approaches head-on a large object at rest. The small object bounces straight back with a momentum of magnitude 4.0 kgm/s. What a ,bd*b8 l+jihg5vf h/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 f4p01dy.vnw du riend (40-kg mass), who is standing still, with open arms. As you collide, while holding each other, with .u1vydp 4 dwn0what speed do you both move off together?

  A car of mass 1000 kg moveskthw2h ;qt2d zp8 1ih9 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 momentum after the collisikh21d9wh t 8p;q2 izthon?

  A 1000-kg car traveling at 25 m/s runs into the rear of a stopped car thad;lyt1k0ny3).jur xl uws(5f t has a mass of 1500 kgy1r ;t skjluyf)( 305xwu l.nd 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 along (i 7im45qkdd7os.y5( q:myb n z:zdsya level track at a speed of 2.0 m/s. It collides and couples with a 50,000-kg second car, initiallyk.4bsyz:5dq(( y:n isd7my qz7d5 mio at rest and with brakes released. What is the speed of the two cars after coupling?

  A railroad car, of mass 200 kg, rolls with negligible friction on a horizonta vv :;.(a.t oskplajh+jtm5 5afb /gw:l track with a speed of 10 m/s. A 70v.ja .:;j vm ag5pkh olf(ts/w tba:+5-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 8.imgw m*o4xsto the log). With what speed do goxi.s8m m4w*es 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 1q6-:ts7, v5k e )ax50wah,upwcyao je 5 N and acts for one more second. What impulse was imparted by these forces to the obj,v 5,scjqa)wp:xt65h eya w-a07 ekou ect?

  A constant 9.0-N net force acts for 2.0 s on a 6.0-kg object. What isz86 j)nlzde rcneo-vj8e14 /f the object's chanzz6o)1 fee48njeld/8njc- rv ge of velocity?

  A 2000-kg car, traveling to t(h/qg jp*lc -k/y4, ngwlar+ 8-ilrdnhe right at 30 m/s, collides with a brick wall and comes to reslkrac-q/n4 gp+j (rw ly,/ l ih-g8nd*t in 0.20 s. What is the 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 alm4dky0r5uf is 8dp-s v+f0i*q ong 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 td rm vsqd* f5pkis+u084i0-fyhe bat exerted?

  A 0.10-kg ball is dropped onto a table top. The speeds of the ball yx 5lxz62d25 /p ruwopright before and right after hitting the table top are 5zo2dx5r6p5 l wxy2p/u.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.svjun cy.fs+9:;i o t-gram bullets, with a muzzle velocity of 750 m/s, at the rate of 300 rounds per minute. .s iu.oj: ;ftcn9vy+s What is the average force exerted on the machine gun mount?

  A fire hose is turned on thezu z;/+wzuxv- door of a burning building in order to knock the door down. This requires a forc ;w uz-zxvz/+ue 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 the rate of 120 t4avy czd00 h:ir)/uzfu a9i 1kg per minute. It falls 3.20 m to the ground. Assuming the water doesn't splash up, what average force doe9 ufcay4)zdiv t1 u ira/zh0:0s it exert on the ground?

  A toy rocket, of mass 0.12 kg, achieves a velocity 8+t jmgdh4k v-of 40 m/s after 3.0 s, when fired straight uhmkj4d-g +v 8tp. What average thrust force does the rocket engine exert?

  Two astronauts, of masses 60 kg and 80 kg, are initially w1mgf3(obk -p at rest in outer space. They push each other apart. What is 3gfk (1b wpom-their separation after the lighter astronaut has moved 12 m?

  A 3.0-kg object moves to the right with a speed of 2.0 m/s. It colli nrvuo,b6w;/y456e/ e3d lyb m*nmdoj des in a perfectly elastic collision with a 6.0-kg object moving to the left at 1.0 m o be5/*e3dnloym6um 6yw,/vd rn;j4b/s. What is the total kinetic energy after the collision?

  A 0.10-kg object with a velofrf5n ky4c* blqi /+d)city of 0.20 m/s in the +x direction makes a head-on elastic collision with a 0.15 kg object initialyl *n4)bkfrdq5/+ci fly at 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 ag*pnx4kjfel:;-q h p 5 1.00-kg block at rest. The bullet eme:jg ;ehln54-fkppxq * rges (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 collision?

  A proton, of mass m, at rest, is struck head-o.,kwkx 7u3 oy:pm fc2rn by an alpha-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 acykm:r , 2u.p3kwfo7x fter the collision? (Assume the neutron's mass equals the proton's mass.)

  A 50-gram ball moving +10 m/s collidcqz+ y,bl- a7v.v qvrp4vr :s+es head-on with a stationary ball of mass 100 g. The collision q4+s.vl7:c+yzv-pvr aqr,b v is elastic. What is the speed of each ball immediately after the collision?

A ball of mass 400 g moving towaq p;xifo2 u2,5q :phwdrd the east with a speed of 3.70 m/s collides head-on with a 200 g ball sitting atqid 52 ;:po2 upxhf,wq 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. It colz)rv f: h7jlqx h.nw0-lides head-on with a 3.0 kg mass at rest. If the collision is perfectly inelastic, what is the speed of the masses afhr.wv0lj-h z7x ):f nqter the collision?

  A 2.0-kg mass moving to the east at a spe/u:tk5 :0el wux e1pbned 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 twnx1ut :50elukpe/ :b his collision?

  A car of mass m, traveling with a velocity v ruh.2vpu ue9h *;vnflj8 t92w, strikes a parked station wagon, who's mass is 2m. The bumpers lock together in this head-on inelastic collishv eu89uw 2l9*t.;n jurp 2fvhion. What fraction of the initial kinetic energy is lost in this collision?

A 15-g bullet traveling 213 m/s in a vertical direction buri)0au si:i o7((dtqv pzes itself in a 2.4-kg block of wood a rest directly above it. As a result, the bullet/block combination moves verticaq0t7 (du:isavz)iop( lly 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 3000-kg cp1bob: 1i8xto ar traveling at 60.0 km/h south. The two cars stick together after the collision. (See Fig. 7-1.) What is the speed of thopib 81x:o 1bte cars after collision?

  A 1500-kg car traveling at 90.0 km/h east collides with a 3000-kg car travel2sdue2 u rb1lib s:28mfjuw as.6/6z zing at 60.0 km/h south. The two cars stick together after the collision. (See Fig. 7-1.) Wh 2d8rlu 1zf.6/j6u sb m 2zw:esa2suibat is the direction of motion of the cars after collision?

  Two objects move on a level frictionless surface. Object A moves east with a *i hw :t7m59pe9o 3mab ig+ykumomentum 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 combined momentuugm5+*w iipe7ymb:hk9ot 9 a3m after the collision?

  A small bomb, of mass 10 kg, is moving toward the North with o+tza ut 7o2w3hfvt94a velocity of 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 tao +7t4v9uh ztf23o wa mass of 1.0 kg. What is the velocity of the third fragment? (Neglect air friction.)

  A 4.00-kg mass sits 725 b refavke7at the origin, and a 10.0-kg mass sits at x = + 21.0 m. Where is the center of25e7er7abv f k mass on the x-axis?

  The center of mass of a two-particle system is at the origin. One partie0( ss7;6ak*)qe ugpzak m6htcle is located at (3.0 m, 0) and has a mass of 2.0 kg. What is the location of the second mass) khe6ukt p;*(sm0za7eq6a sg of 3.0 kg?

  Three masses are positioned as follsmg 0j9.h 4qvuows: 2.0 kg at (0, 0), 2.0 kg at (2.0, 0), and 4.0 kg at (2.0, 1.0). Determine the coordinates of the center mvu0q.h4s g 9jof mass.

  Three masses, 1.0 kg, 2.0 kg, and 3.0 kg, are located at (0, 0), (1.0 m, 1.0g2:4anc8jvg .2r6 y omxhh6vp m), and (2.0 m, -2.0 m), respectively. What is the locatio2nm8pa 6 vgo.j: 2rgy4h 6chvxn of the center of mass of the system?

  A 3.0-kg mass is positione8ouil j sv1axr*t.0iw q-+yp;d at (0, 8.0), and a 1.0-kg mass is positioned at (12, 0). What are the cooro8s pi-ut x.a +w;y jiqv0*1lrdinates of a 4.0-kg mass which 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 c0/ gwdus8 if8qyrk0t ;47tge position of the CM of a whole leg including the foot when the leg is stretched straight out. Assume the person is 1.60 m tqykst70r0fwigge4 /uc d8 ; t8all.