What is the SI unit of moah2d(wvqh)x f6 m.t;hmentum?

  When a cannon fires a cannonball, tkyd. ja6 p3kc2he cannon will recoil backward because the

  A freight car moves along a frictionless level railroad track ub* zy5dc6*p9p h-z uamqf0e;at constant speed. The car is open on top. A large load of coal is suddenphf 6eb- z5uap*uc m* 0z9dq;yly dumped into the car. What happens to the velocity of the car?

  A child falls sideways off a sled while sledding on f i8q*.dlqx+fn8f;s c lt9x5h nrictionless ice. What happens to the velocity of the sle5+slxnc.ftl nqiq9d8xh*; 8f d?

  A rubber ball and a lump of putty have equal 1cgy i:l 15/ l-akydvfmass. They are thrown with equal speed against a wall. The ball bounces back with nearly the same speed with which it hit. The putty sticks to the wall. lvy5 /kyl1c:-d 1figa Which objects experiences the greater momentum change?

  A sailboat of mass m is moving wkuuq6 -he nc v08dwe).ith a momentum p. How would you represent its kinetic energy in terms of these two quantitiesd -)6 vu.u0hc wkneeq8?

  If you pitch a baseball with twice the kinetic e-q4d fjur (g4energy you gave it in the previous pitch, 4-gqj reud4f (the magnitude of its momentum is

State Newton's second law in terms of momerti8r h/jxzne6a uks/x mz0*zw* j; 07ntum.

State the law of conservatioe hu4,)p;mf7 quq2otqn of momentum.

  The area under the curve on a Force versus time epki26qi5pm n f+dl8-(F vs. t) graph represents

  Which of the following is an accurate khytv-4*du84uge2,o ,sprm*wkzj 1 bstatement?

  A small car meshes with a large truck in a head-on collis fhvxk h7:8 5ce5zdw1uion. Which of the following statements concerning the magk71 ufwe:ch58 zh vxd5nitude of the average collision force is correct?

  Two equal mass balls (one red and the other blue) are dropped fr y8 r )xfpljn;*8lotc9om the same height, and rebound off the floor. The red ball rebounds to a higher position. Which bnoy9lfc 8)pj8rt l;x* all is subjected to the greater magnitude of impulse during its collision with the floor?

  A Ping-Pong ball moving east at -ra6: rnkdw1 2:gih ca9m+(jxbz - )km8li qxfa speed of 4 m/s, collides with a stationary bowling 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 impumf n lai6m 2dhkjr:98bi :r-xw -kxca1q(g+z)lse during the collision?

  Two objects collide and bounce off each other. Linear momentumayhdz;e3 *40zkc*nuz

  A 3.0-kg object moves to the right at 4.0 m/s. It collides head-on with a 7uhd eo h,o/1h6.0-kg object moving to the left atduhhoo7 1,/he 2.0 m/s. Which statement is correct?

  A 100-kg football linebacker moving at 2.0 m/s tackles heir *f,r.et q6ead-on an 80-kg halfback runnietq *.,e6ifr rng
3.1 m/s. Neglecting the effects due to digging in of cleats,

  In an elastic collision, dj2vei ,sd-v,j2. pz:ygwl.g if the momentum is conserved, then which of the following statements is true about pyd zw l.,:gdj2giv2,v- je.skinetic energy?

  When is kinetic energy coa2sd7e)*nv t/jh 6twnnserved?

  In a game of pool, the white cue ball hits the #5 ball and stops, while thed xin5 udn4t*j/h+qp : #5 ball moves away with the same velocity as /qx+h4d5 tu*dnpi: njthe cue ball had originally. The type of collision is

  When a light beach ball rolling wit)czv583p lyf akx6y8vh a speed of 6.0 m/s collides with a heavy exercise ball at rest, the beach ball's speed az yp)3a yvkf8v56x c8lfter the collision will be, approximately,

  A golf ball traveling 3.0 m/s to the right collides in a head-on co ly7(ls krq,svye25*( xa rh8jllision with a stationary bowling ball in a friction-free environment. If the collision is aayj( yq(8svshl5r ,l2k7*er xlmost 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 elastically wit45u qx9:m2m co+lkxgth an identical ball at rest. What is the speed of the initially stopped ball after the collision qkcm42g5x ul:m9x+to?

  A very heavy object moving with speed v collides head-on with a verzs+ hnfq. t,u-y 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 c+sh f. uqz-nt,ollision?

  A very light object moving with speed v collideskcn6l 9m.v2yf head-on with a very heavy object at rest, in a frictionless environment. The collision is almost perfectly elastic. The speed of lvc.y 6nm9kf2the heavy object after the collision is

  A red ball with a vel0tq/i ,s in/osbwm, w:ocity of +3.0 m/s collides head-on with a yellow ball of equal mass moving with a velocity of -2.0 m/s. W,sn: om/bw/si 0,iqtwhat is the velocity of the yellow ball after the collision?

  A very heavy object moving with velocity v collides head-on with a very ligeus ,/z6ftb en*g3t e(ht object moving with velocity -v. The collision is elastic, and there is no friction.(fe, 3ue t*nse6 g/ztb 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 conselbd y 66,sog5 m m*3ylssa/2werved, then which of the follo sy2mag56o6yw3 lsls me ,bd*/wing statements is true about kinetic energy?

  Two objects collide and stick together. Kiny2q /om l,sl6yetic energy

  A 3.0-kg object moves to the right at 46wzv5paz1 e) c.0 m/s. It collides in a perfectly inelast1z6cap)w5 zv eic 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 object and stick((bt jek yur45s. Which object experiences the larger magnitudee( y4jr5b k(tu of momentum change?

  In a game of pool, the white cue ball hits the #9 ba aya0lv0:qkp.azbl i( we p3+btd6: )fll 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 y:ii 9 fyalk.wj3d8q3:acs8k masses, M and m. Which of the following statements is fals93k w8ay: 38dij yf:al.cisk qe?

  Which of the following is a false stateme xzi ny u1npkya ,reb14d3no)q26jn+4nt?

  Tightrope walkers waiu by+ba3k -ni qq lsk5(f3.r3lk with a long flexible rod in order to

  A plane, flying horizabv-2ss0 5 a x(ntodd(ontally, releases a bomb, which explodes before hitting the groun sbx( s -naa025tdodv(d. Neglecting air resistance, the center of mass of the bomb fragments, just after the explosion

  Two cars collide head- gc; y4l90vtemmv6bz1 on on a level friction-free road. The collision was completely inelastic and both cars quickly came to rest during the collision. What is truem01 c6mvg tvl49ebzy ; about the velocity of this system's center of mass?

State Newton's second law for a system xa(uby-i5x c.ipm z er1,8*bi of particles.

  What is the momentum of a 2000-kg tb9:hq0gqnv)v:xgt-u ruck traveling at 35 m/s?

  A 1200-kg ferryboat is moving south at 2ir (l/ jr g/9egze.f+e0 m/s. What is the magnitude of its momge f/ij zr(.leg+/re9 entum?

  A ball of mass 0.10 kg is dropped from a height of 12 m. Its momenbae yp-,w+,zu tk -sr4u :w2k29phjextum when it stri-t,ux2 zjap: ke4-yw e hks,9 r+ubpw2kes the ground is

  Two identical 1500-kg cars are moving perpendicular to each other. One msce.:umm s;c 3oves with a speed of 3mcu;mec .:ss25 m/s due north and the other moves at 15 m/s due east. What is the total momentum of the system?

  A handball of mass 0.10 kg, traveling horizontally at 30 m/s, s )l/cta70hr lqtrikes a wall and rebounds at 24 m/s. What is the chan7)/ltl0c h qarge in the momentum of the ball?

  A 0.060-kg tennis ball, initially moving at a speed of 12 m/s, is struck benh/ l/cq(.jpqo w+*ewhh0 9f;e c+dby a racket causing it to rebound in thewqhe.ehclp w( henjfb +q9;// 0do+*c opposite direction at a speed of 18 m/s. What is the change in momentum of the ball?

  A 50-kg pitching machine (excluding the baseball) yoh-3: td y6oois placed on a frozen pond. 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 mhooy 6t -d3o:yachine? (Assume negligible friction.)

  A 70-kg astronaut is space-walking outside the space capsule 4ju )ev-9tpsa .4nrne 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 speed does the astronaut move toward the vetjspun)9 r- n.4ae4 capsule?

  A small object with momx bux+n75-36xwonbrmc 95f faum s5* uentum 5.0 kgm/s approaches head-on a large object at rest. The small object bounces straight back with a momentum of magnitude 4.0 kgm/s. Wh n7 bxxu-rmosfmu5fu+a*c5n9w5x63 bat is the magnitude of the large object's momentum change?

  You (50-kg mass) skate on ice at 4.0 m/s to gre*r0,,/ s*stvehnw ajovig9i3;xyu3q et your friend (40-kg mass), who is standing still, with open arms. As you collide, while holding each other, with what speed do you both *,aqthw 3ij/yeg iovs v,r90s3 nxu;*move off together?

  A car of mass 1000 kg moves to the right along a level, straight road oc/s j31qiz-,z:c qfrat a speed of 6.0 m/s. It czz3fjr: - cqq1cs, o/iollides 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 into t7sk1 m(wo sv(5w cv-fzhe rear of a stopped car that has a mass of 1500 kg and they stick 5 mk cs-zw(vso7w(v f1together. What is the speed of the cars after the collision?

  A railroad freight car, mass 15,000 kg, is allowed to coast along a level track mbh8l,r) o.py5w zc* aat a speed of 2.0 m/s. It collides and couples with a 50,000-kg po8abwrz h, 5*cly.)msecond 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, rolls with negligible friction on a hor q+)d 2koqj4nw4tdf7 mizontal track with a speed of 10 m/s. A 70-kg stunt man drops straight down a distanc4dwko)f+ n2dqj7qt4m e 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 towe5 ne5frnd96bfyu9*fnu ( i1 the log). With what speed does the log m (en5fby69 frnd9uui enf15w*ove, with respect to the shore?

  A 4.0-N force acts for 3.0 s on an objectr4;uk 42dgioj xo) *mf. The force suddenly increases to 15 N and acts for one more second. What impulse w4jgr fmoukx42)* d oi;as imparted by these forces to the object?

  A constant 9.0-N net force acts for 2.0 s on n9w35vmg 8sr d1slm58,wyxc ka 6.0-kg object. What is the object's cham8c m 5xr nwy983s swdlkgv15,nge of velocity?

  A 2000-kg car, traveling to the right at 30 m/s, collides with ac pnc-f0mq -p;a9er*f brick wall and comes tf*p 9-qfe0n mccp-;ar o rest 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 yecp nrrryj j4g7, 9k0tv. xz3 qr(,.nball 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 forjzy.,0.yn 479jqrrce,r3xn (gkp tr vce the bat exerted?

  A 0.10-kg ball is dropped onto a table top. The ;bf gz133r:abnqz78sxkb 2g m 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 ball by the tableg3z:n23gqb kmbfz8 s7x;rab 1 top?

  A machine gun, of mass 35.0 kg, fires e(av6qxzb9,z5l;etur wvo.7 / u dnb 250.0-gram bullets, with a muzzle velocity of 750 m/s, at the rate of 300 rounds per minute. What is2v ur5zeexdw(/.,aolqt;v 9bu bz7n6 the average force exerted on the machine gun mount?

  A fire hose is turned on the door of a burning building in order +8wr0uqsfaf:e,lq cc6 h48ugto 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 st,slh:wf60 4qucfe u g8qa+r8 cream needed, assuming the water doesn't bounce back?

  Water runs out of a horizontal drainpipe at the rate of 120 kg per minute. hw01r 38 ca/isnb e(ci It falls 3.20 m to the ground. Assumingn/iwcb1sh3 cia 0er8( the water doesn't splash up, what average force does it exert on the ground?

  A toy rocket, of mass 0.12 kg, achieves a velocity of 40 m/ *-eh3:des,gy5tcm q abuy 2z/s after 3.0 s, when fired straight up. What average thrust force d my5ugzy,q2hed -s *a3bce/: toes the rocket engine exert?

  Two astronauts, of masses 60 kg and 80 kg, are initially at rest in outey- jv.o05jw 43 sae.5 txzleskr space. They push each other apart. What is their separavy45 eas0.ljztsjx w o.3k5 e-tion after the lighter astronaut has moved 12 m?

  A 3.0-kg object moves to the right with a speed of 2v 70gag (j8mvc6p 3gly.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.8cap6 l(gg7jvy3mg 0v What is the total kinetic energy after the collision?

  A 0.10-kg object with a veloc w3ovl9i5 c.ycity of 0.20 m/s in the +x direction makes a head-on elastic collision with a 0.15 kg vl5yc3c w 9.ioobject 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/s is fired into a x w/qx;u au:r,1.00-kg block 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 collixrqw xa/;,:uu sion?

  A proton, of mass m, at rest, is struck head-on bka:4mlr-08 evmvn5 gby an alpha-particle (which consists of 2 protons and 2 neutrons) moving at speed v. If the collision is completely elastic, what speed w8 ml5-v04abeg rk:nm vill 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 ball ofc7v afuv6g 0t.) xo.mfx2hzm3 mass 100 g. The collision is elastic. What is the speed of each ball immediately af7.vt2xza.60 ff cx)vhm umo3gter the collision?

A ball of mass 400 g moving toward the east with a sm(bx/m0t9f atpeed of 3.70 m/s collides head-on with a 200 g ball sitting at rest. Th/a0xtt( mb9fm e 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/suu6h qsx hj zhk*:x/9et7xk+9fqbpe+ 7ov u(6. 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 afterqeu7 6u7qup +j:hhhztf(oe69 9 /x kv*x bk+sx the collision?

  A 2.0-kg mass moving to the east at a speed of 4.0 m/s dg+ih /t/(c-pau,od6cn 7 u,li/z ria collides head-on in a perfectly inelastic c,p7 id/ /d+az(uoaich-ui tlg r n,6/collision with a stationary 2.0-kg mass. How much kinetic energy is lost during this collision?

  A car of mass m, traveling with ar8nvp4* ksh dq+qjew+: /mc1f 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 i: jq 4s nrfv+8we*dmhkc+ /1qps lost in this collision?

A 15-g bullet traveling 213 m/s in a vertical direction buries kb0p 5 6rmd*nrv7-fy:;nmt,w(z lrtp itself in a 2.4-kg block of wood a rest directly above it. As a result, d :;r m*w fb v zp7l05nt,6tnk(yrr-pmthe 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 4uk + ;,nrri70 unuyzcat 90.0 km/h east collides with a 3000-kg car traveling at 60.0 km/h south. The two cars stickrz r;4u 7un cyn+u,k0i 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 abm8x(6 qx i/e6ea d)lkm/h east collides with a 3000-kg car traveling at 60.0 e6da ixmel 8/b)q6ax( 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 collision?

  Two objects move on a level frictionless surface. Object9pr)d1)v mim r A moves east with a momentum of 24 kgm/s. Objec1mprr i dv)m9)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, a,w2 nsz:zse , .v28c-mlrgb wis moving toward the North with a velocity of 4.0 m/s. It explodes into three fragments: a 5.0-kg fragment moving west with a speed of zb 2lw.sv2-g,c :azrnswem8,8.0 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 = + 21.0q;e; s 2ubwxo9 m. Where is the center of mase92s xbq;w uo;s on the x-axis?

  The center of mass of a two-particle system is at the origin. One partvhgn ojr-4po;t*n* g)icle is located at (3.0 m, 0) and has a mass of 2.0 kg. What is the location of the sec h jopv; nnotgg*r-4)*ond mass of 3.0 kg?

  Three masses are positioned as follows: 2.0 kg at (0, 09s7) dnr/ttoz .jbu c/), 2.0 kg at (2.0, 0), and 4.0 kg at (2.0, 1.0). Determine the coordinates of)z/ntj/r udc7b9sot. the center of mass.

  Three masses, 1.0 kg, 2.0 kg, and 3.0 kg, are located at 3 s 5vqqt/y,ig(0, 0), (1.0 m, 1.0 m), and (2.0 m, -2.0 m), respectivelyi5qqs3t , gvy/. What 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 mass is positioned adz6 *2yt(lkdc t (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 being lcyzd2 *t(6kld ocated at the origin, (0, 0)?

  Use Table 7-1 to calculate the position of b8bv ,wuy,4lj33 d urrthe CM of a whole leg including the foot when the leg is stretched straight out. Assume the person isdjuyrub w34 8l v,r3b, 1.60 m tall.