What is the SI unit of momentumi g)2chfc)ur q,i 7acv9l ,:2i +tdb+acqrju1 ?

  When a cannon fires a cannonball, the cannon will recoil backward.7r. )rm9dsu6oqex d r because the

  A freight car moves along a fri2)iyus8qumpj x n9w .+ctionless level railroad track at constant speed. The car is open on top. A large load of coal isn)jmp+w u 2y.uqs8 i9x suddenly dumped into the car. What happens to the velocity of the car?

  A child falls sideways off a sled vy:eo)jx d0nz0t94umwhile sledding on frictionless ice. What happenu0)td 4 zjneyxm9v 0:os to the velocity of the sled?

  A rubber ball and a lump of putty have:f9t byqghf : oqb9-x) equal mass. 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. Which objects experiences the greater momentum 9bx- h)f: qtgf:9yqobchange?

  A sailboat of mass m is moving with a momentum p. How wov ex3 4coc.1bculd you represent its kinetic energy in terms of these two quant. 1o4cbcce vx3ities?

  If you pitch a baseball with twice the kinetic energy you gave 4i )atldf3)pw it in the previous pitch, the magnit ipt f))l34awdude of its momentum is

State Newton's second la)fw*fdq/.a v kw in terms of momentum.

State the law of conservsf+qu/1 3 ky+ xj osysb4yr*h)ation of momentum.

  The area under the curve on a F5g3+8t xd5p 1tc tgtbdorce versus time (F vs. t) graph represents

  Which of the following isafnnmvh 1,ovbs8/2 19;mwzys an accurate statement?

  A small car meshes with a large truck in +u5l5z uz,wjj(rl9m8yxk v+ia head-on collision. Which of the following statements concerning the magnizx +uvjz,5ji 5lym 8uk+w(9lr tude of the average collision force is correct?

  Two equal mass balls (one red an (trykwl 3; h0kgw6+fld the other blue) are dropped from the same height, and rebound off t6l y( +tk3wlhrkgf;0whe 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, collides wit swf8umr+m.*t cz*lx- cr-s u,h a stationary bowling ball. The Ping-m- * *mwr +cscux-8ur,fz ts.lPong 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 bounce off each other. Linear *.jap94xxg x2skmw1m momentum

  A 3.0-kg object moves to thed /.z1 (u1lrwhyp4wro right at 4.0 m/s. It collides head-on with a 6.0-kg object moving to the left at 2.0 m/s. W ruow/z l( r14ypdw1h.hich statement is correct?

  A 100-kg football linebacker moving at 2.0 m/s taca k6 p+nq4w2 iigms0l7kles head-on an 80-kg halfback run q0wpakg7 m2 s4nl6+iining
3.1 m/s. Neglecting the effects due to digging in of cleats,

  In an elastic collision, if t 3)jado,4/ hvqgp0jmihe momentum is conserved, then which of the followingam/3id ,4) gphojvj 0q statements is true about kinetic energy?

  When is kinetic energy conservj o 4eya(p6i8h f**zwked?

  In a game of pool, the white cuicufip3c ;v8 8e ball hits the #5 ball and stops, while the #5 ball moves away with the same velocity as the cue ball had originally. The type3 ;i ccp8f8viu of collision is

  When a light beach ball rolling with a speed of 6.0 m/dn54 j-.g k+dc6iexgsh9 2qqts collides with a heavy exercise ball at rest, the beach ball's speed after the collision will be, approximate5q2ei 9xdqckn.dsh +g j-tg46ly,

  A golf ball traveling 3.0 m/s to the right collides in a heado z 38wtqct2u5-on collision with a stationary uz tw2t3cq5 8obowling ball in a friction-free environment. If the collision is almost 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 elastica485p4ezno77+ s-w io tcla izglly with an identical ball at s4ol+i5a4 p 87g in-7cwzze torest. What is the speed of the initially stopped ball after the collision?

  A very heavy object moving with speed v collides head-on with a very lig) /zc;6inqx.bp ou-yl q + au(9gukp:ght object at rest. The collision is elastic, and there is no friction. The heavy objec /p u)q.(y qx;+gu k6gzubplc-n9oai:t barely slows down. What is the speed of the light object after the collision?

  A very light object moving with speed v collidesd(q)w ,kpatt0.h fu , 7-j7bkxfxny(b head-on with a very heavy object at rest, in a frictionless environment. The collision is almost perfectly elastic. The speed of the heavy object after the collisiwq7tftpd.7jbu ,nk xf) a y-x0 b,h(k(on is

  A red ball with a velocity of +3.0 m/s col d;fa1 0/u7btam0hj jblides head-on with a yellow ball of equal mass movingujf7 m bdbt1aa;jh0/0 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 velocity v coa8 tthol.f+r5llides head-on with a very light object moving witta otl r+.5f8hh velocity -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 collision, if the momentum is cat g2:twe izq/-vh+ep(6z w;f onserved, then which of the following statements is true about k e;:avi 6pqwfw2 z/tt-ez+h g(inetic energy?

  Two objects collide and stick together. Kinetic enerm3dtp+x3e u6dva *;z* eo/chfgy

  A 3.0-kg object moves to the right at 4.0 m/s. It collid/ o*y3qpno wn8zw7h7pes in a perfectly inelastic colp nynz7/woqh 3*po78 wlision 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 a3njhx7f y.j(ya z s mwtdp+6:. large object and sticks. Which object experiences the larger magnitude of yjtfn37:h+ sxp 6(zdm. . jywamomentum change?

  In a game of pool, the whi03uvvht ( -wl *rzkmuri/ qtoay36,) a/hf,clte 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. gra+b(ky na j/di 6)ir6p0j4jWhich of the following statements is falseib6ya6(ar ip+d)4gk0 / njjrj?

  Which of the following is a faln2y5 antjnh:z; 7/t xwu*i;twse statement?

  Tightrope walkers walk with a long fo1s/fg,+o v if06ohgglexible rod in order to

  A plane, flying horizontally, releases a bomb, which ,ef* shz)4pop n(ks7vexplodes before hitting the ground. Neglecting air resistance, the center of mass of the bomb fraeh*s ops (p7 zn,fvk4)gments, just after the explosion

  Two cars collide head-on on a levh dala v(1 ykf9 r/gisl2-:vm+el friction-free road. The collision was completely inelastic and both cars quickly came to rest during the collishl/ l(s2+ 1rvfg ia:a-vd9ymkion. What is true about the velocity of this system's center of mass?

State Newton's second law for a system of particbz(0owcu -*ere j un99les.

  What is the momentum of a 2000-kg truck traveling at 4: xmjvemjeag 3t-gz*ton0 ,835 m/s?

  A 1200-kg ferryboat is moving south at 20:xhqtm*2s7a u (us n 3kfgbmbr72(wv+c+(qb e m/s. What is the magnitude of its momentbw+gqc2v*k +a3 u7(ms( bqfe xm: 7 2(srthubnum?

  A ball of mass 0.10 kg is dropped from a height of 12 m. Its mome + d ehpc6.a7bx;ia +ryb4+vhjntum when it strikes the ground ixvj6+r. b iyb74+da+hhc ; eaps

  Two identical 1500-kg cars are moving perpendicular zma4u ,-4rihq 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 momra uiz4-mqh, 4entum of the system?

  A handball of mass 0.10 kg, traveling horizontally e-xczf0 ff88h(vhmu :at 30 m/s, strikes a wall and rebounds at 24 ze0u8ff(m-cxf:v8hh m/s. What is the change in the momentum of the ball?

  A 0.060-kg tennis ball, initially moving43erjt9pis9 ua 6 u54vd8s 6cmth s,rh at a speed of 12 m/s, is struck by a racket causing it to rebound in the opposite direction at a speed of 18 m/s. What is the change4jse h4t hpsrtdavui6399,sc5 u86r m in momentum of the ball?

  A 50-kg pitching machine (excluding the baseball) is placed on a frozen pond. kpl) cf 9o;i+ ooe/n0gThe 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)ok90 ioepf /g+cn;ol machine? (Assume negligible friction.)

  A 70-kg astronaut is space-walking outside the sp5smh0m8vr6o0l 4v0hhatq( ly os / rt:ace capsule and is stationary when the4v/l8hht( t5yrl osmh00:aorv 6s 0mq 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 capsule?

  A small object with momentum 5.0 kgm/s approaches head-on a larges q8 rx0 a8-cf+ia:izz object at rest. The small object bounces straight back with a momentum of magnitude 4.0 kgm/s. What is the magnitude of the large object's ma0xza8 :is-qci z f+r8omentum change?

  You (50-kg mass) skate on ice at 4.0 m/s to greet your friend qo+z 5 6mdm +4ol3sxth0lu2vm(40-kg mass), who is standing still, with open arms. As you collide, while holding each othdmox lh26 zs+ v0umm 43lq+5toer, with what speed do you both move off together?

  A car of mass 1000 kg moves to the rightr(.rnb7ble dza1yo * (ce7qj, along a level, straight road at a speed of 6.0 m/s. It col(elq1n.r(7 zoc7,arj* bebd ylides 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 the rear of a stosrpio8o60fiz0a h3 *ipped car that has a mass of 150p80 6 ih3i0zi soao*rf0 kg and they stick together. What is the speed of the cars after the collision?

  A railroad freight car, mass 1592blepai, u/ ;ydq2q p,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 releas,/q q;l aeppi2ud2yb9 ed. What is the speed of the two cars after coupling?

  A railroad car, of mnyo6s s x slos.76-oq)ass 200 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 nxs-slys. 6o7oq 6)oscar. How fast will the car be moving after this happens?

  A 60-kg person walks on a 100-kg log at the rate of v,89k sx7flyv 0.80 m/s (with respect to the yfv8vl79ks , xlog). With what speed does the log move, with respect to the shore?

  A 4.0-N force acts for 3.e*9hne ol s,v6b qq::g0 s on an object. The force suddenly increases to 15 N and acts fovleon6 gq e:b:9qs,h*r 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.ma(, p/sz;hlrlu:bu+h- hrm 90-kg object. What is the object's change of lp r -m+z sual, /;h9:mhruh(bvelocity?

  A 2000-kg car, traveling to the right at 30 m/s, collides with a n s23v o*,btxqgij 3t4nmfi*6brick wall and comes to rest in 0.20 s 6ivot,x* 4ijn*nb tm3s gq32f. 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 )2;q67netgesq vqxmaa0 4 k-o(d7tg uball 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 ofa;2v 7et6nsexogm 0-7gtaud4kq ) q (q the average force the bat exerted?

  A 0.10-kg ball is dropped onto a table tv:xyl(.d1n j 6:pv isyop. The speeds of the ball right before and right after hitting the table top are 5.0 :pvyl(d1vxy jn.s i 6: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-grgdfw*s/1x onk7l 2u/uam bullets, with a muzzle velocity of 750 m/s, at the ratxn gd2/f7us w1o/ulk* e of 300 rounds per minute. What is the average force exerted on the machine gun mount?

  A fire hose is turned on the door of a burning building in order . vgyc+igaw/7 to knock the door down. This requires v/7+y.g cwgiaa force 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 kg per mnmp f9bc3*fs ;: ,yqkeinute. It falls 3.20 m to the ground. Assuming t:sqmefkc ;9,y3fb*nphe 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 9 2chgggbg5nfyr6z // .y0yyw/s after 3.0 s, when fired straight up. What average thrust force does the rocket engine ex 9ygz g65y2ygfcn/r/h 0g.bywert?

  Two astronauts, of masses 60 kg and 80 kg, are initially at rest in outer spavb4 lf cu,8u1f(ad ys3ce. They push each other apart. What is their separation after the lighter a(4u8lf s vyau,fbcd 13stronaut has moved 12 m?

  A 3.0-kg object moves to the right with a speed of 2.0 m/s. It corf .ld iq 77r.1zt y:y +-:zfjosga7rgllides in a perfectly elastic collision with a 6.0-kg object moving to the left at 1.0zg7r .7ygzj rs-1 to7:r lfy+ f.ai:dq m/s. What is the total kinetic energy after the collision?

  A 0.10-kg object with a velocity of 0.20 m/s in the +x direction makes a head27n1yun mwqtq :at(6w -on elastic collision with a 0.15 kg object initially awynq7q6tw12(nmu: t at rest. What is the final velocity of the 0.10-kg object after collision?

  A 10.0-g bullet movingw1fb6 12:bkv . ntctrv at 300 m/s is fired into a 1.00-kg block at rest. The bullet emerges (the bullet does not1f.nb 2vv1kcrwb:6t t 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-particle (ww8cat1fg)n )/5f-nkl)q q *1tko yxvi hich 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 col/fw 5iot 1 *xyk8kvc)nlg )tn)af1q-q lision? (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 of massgpx-v8 rs b;drhsyqw1(mo -2* 100 g. The collision is elastic. What is the spw q(m18hrrv ydo2 b-;sgs* -xpeed of each ball immediately after the collision?

A ball of mass 400 g moving toward the east with a speed of 3.70 m/s colnj-9 cula .lqjpi e;j+ajwo *x 7n:5;tlides head-;nun.j jt+l;-pc*exo97al: jja5 iw qon with a 200 g ball 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. It collides head;3nidcx nl7 a0 cg1q4n-on with a 3.0 kg mass at rest. If the collision is perfec3lqc; an0d1i 7gx ncn4tly inelastic, what is the speed of the masses after the collision?

  A 2.0-kg mass moving to the east at ao n781a:i2pzo po gf(h speed of 4.0 m/s collides head-on in a perfectly inelastic collision with a stationary 2.0-kg mass. How much kinetic eneogz27oh1aip(pnf o8: rgy is lost during this collision?

  A car of mass m, traveling with a velocity v, strikes a parked station wagon,uvm,ccrbo oh51g 0 6c 6lk*qs/ who's mass is 2m. The bumpers lock together in this heads 60 5vrocum,gl*c/ckqob 16h-on inelastic collision. What fraction of the initial kinetic energy is lost in this collision?

A 15-g bullet traveling 21 vkzk.e3wk-a ,3 m/s in a vertical direction buries itself in a 2.4-kg block of wood a rest directly above it. As a result, the buwe. vk-kz,ak3 llet/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 east collides with a 30ugi3tm /*o6upx2:np p00-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 a2g6m 3i nup pox*up/t:fter collision?

  A 1500-kg car traveling at 90.0 km/he,ri2b:v1 zjmf:)dfu 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 direction of 2rd,1mf :uize v)bf j:motion of the cars after collision?

  Two objects move on a level frictionlki8hm:vt/q 8ness surface. 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 coln8kq8h t/m: vilision. What is the magnitude of their combined momentum after the collision?

  A small bomb, of mass 10 kg, is moving toward the Nor pjur:h 4teo;+th with a velocity of 4.0 m/s. It explodes into three fragments: a 5.0-kg fragment moving west with a speed of 8.0 p4+ hu;otr:e jm/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 origi 3k di )uf n8gg8.l)lj;ichu4cn, and a 10.0-kg mass sits at x = + 21.0 m. Where is the center of muu 4 )lc;.n c)3lk8gg8hjifidass on the x-axis?

  The center of mass of a two-particle system is at the origin.-l6y97axzodv One particle is located at (3.0 m, 0) and v-x6a79 zodyl has a mass of 2.0 kg. What is the location of the second mass of 3.0 kg?

  Three masses are positionedl8jg62 n )8jaqai0 hxx as follows: 2.0 kg at (0, 0), 2.0 kg at (2.0, 0), and 4.0 kgglanij 2 hqx)a86x0j 8 at (2.0, 1.0). Determine the coordinates of the center of mass.

  Three masses, 1.0 kg, 2.0 kg, and 3.0 kg, are located at (0, 0), (1.0 mt1,8m h6,9d.lj ut3 bam htmcl, 1.0 m), and (2.0 m, -2.0 m)j6m3,1,tld a m h9.c8tlhubmt , respectively. 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 yl bg5nh+w6xyn f- allb en9m )g:+k) /nvs*:uis positioned at (12, 0). What are the coordinates of a 4.0-kg mass which will result in the center of mass of the system of thrlaxv)*b 5/b-g6g)smw 9uhn:yln+ f+ e:nnyklee masses being located at the origin, (0, 0)?

  Use Table 7-1 to calculate the position of the CM of a whole leg including the+u-6h/ d+s czays9z lx foot when the leg is stretched straight out. Assume the person is 1.60 m t6xs+a /hu9s y+c-zz dlall.