What is the SI unit of momvrfpn.xq;p 39entum?

  When a cannon fires a cannonball, the cannon will recoil c0d484ktgzf9u3 wpukbackward because the

  A freight car moves along a frictionless level railroi* zql6rugg cj.5p z3(ad track at constant speed. The car is open on top. A large load of coal is suddenly dumped gq65z zr ligj(c3*u.pinto the car. What happens to the velocity of the car?

  A child falls sideways off a sled while sledding orie u2 ozzdduk91v+)d( 4;ct8 jo9pzgn frictionless ice. What happens to the velocvz4udo;g92u 1o8kzd(dt +)pejr9i zcity of the sled?

  A rubber ball and a lump of putty have equal mass. They w5fya( lt2 qq6are 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 e fwl265tyqq( axperiences the greater momentum change?

  A sailboat of mass m is moving with a momentum p. Hon fv3hd4+ +xsuw would you represent its kinetic energyv fu+n s34hd+x in terms of these two quantities?

  If you pitch a baseball with twice the kinetic energy youl;5iwl3n: x9rawyli -td )*hc gave it in the previous pitch, the magnitude o w-)wi9nh 3cy:*d;l5t rlliaxf its momentum is

State Newton's secon6 4 ;ymh1+k-kd ayko5u nedw5yd law in terms of momentum.

State the law of conservation of momentum 45zemk.mmqw4 .

  The area under the curve on a Force versus time (ok*d wt 9:1 7edxb(p8npgel2oF vs. t) graph represents

  Which of the following is an id g-e1x7w 04tjh 1u kpo)jty,accurate statement?

  A small car meshes with ihu0 +6va6whlsiw3 c:a large truck in a head-on collision. Which of the following statements concerning the magnl wi6s 60i+a3vhhc:wuitude of the average collision force is correct?

  Two equal mass balls (one red and the w hf ;*kks*/m0s.o8wrtat n)zother blue) are dropped from the same height, and rebound off the floor. The red ball rebounds to a higher position. Which ball is subjected to the greater magnitude of 0o tht/)8wm;knsz * . ws*rfkaimpulse during its collision with the floor?

  A Ping-Pong ball moving east at a speed of 4 m/s, collides with a statin c*9 wi:p,nhconary bowling ball. The Ping-Pong ball bounces back to the west, and the bow:np*cwnc,9h i ling 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 momentum3d;c5uf0wwf mcy1yqehp u6). sy: zj0

  A 3.0-kg object moves, od 4cj/apdrt 8)sdhih0h6 d)n, cd8etu/ dw- to the 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. Which statement is coddc8rh/s/0ddw n) e doihaj6u4h ,,cdp8 )t -trrect?

  A 100-kg football linebacker movp 6 vv+xo-:np*)+ xsd yk2.txlh hz*buing at 2.0 m/s tackles head-on an 80-kg halfback r o +:z*x-vyk2v)snt *lxhh+x bpup6.dunning
3.1 m/s. Neglecting the effects due to digging in of cleats,

  In an elastic collision, if the momentum is conserved, thesuae8 :c0 ;euwm-4xp en which of the following statements is trsue40 pc ex:uwa;me- 8ue about kinetic energy?

  When is kinetic energy consee85px/s f4q l8bpfd7 krved?

  In a game of pool, the white cue ball hits the #5 ball and sto-oyby px:5 -a8z+iph ew 2;zmlps, while the #5 ball moves away with the same velocityp;hi+awbzypxoy: -ml 2e- z58 as the cue ball had originally. The type of collision is

  When a light beach ball rolling with a speed of 6.0 m/s collides with a he 5x o pe7wc05,znmg7rjavy exercise ball at rest, the beach ball's speed after the collis,p0gc5x7omz7nrwj e 5 ion will be, approximately,

  A golf ball traveling 3.0 m/s to the right collides in a head 75*s uy(yhw70zt04 bkroqck j-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 immediately aftey7ouj(ts*y 7bw qck0k z5 0h4rr the collision is

  A rubber ball with a speed of 5.0 m/s collides head-on elastically with an i f.by d47dsqh -* 7p7kkxxoijc1ini-+dentical ball at ress7d-dh ixok-ibn* cj+ kp 174xy7q.fit. 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 ver2xesqb(b 4 mxw*9,crngw -f-cy light object at rest. The collision is elastic, and there is no friction. Thebce4qgwf,n*c9x 2-b mwr(s -x heavy object barely slows down. What is the speed of the light object after the collision?

  A very light object moving with speed hhe -i*wgo;6t u:9 rju5hb:sfv collides head-on with a very heavy object at ret* r- bhjg:uos he9:h5uiwf; 6st, 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 heaph 7/9tyv2di2 ,dsr*xzeg .oxd-on with a yellow ball of equal mass moving with a velocity of -2.0 m/s. What is tr2 ed ,v/x9gpodisx2.ht y*7zhe velocity of the yellow ball after the collision?

  A very heavy object moving with velocity v collides head-on wi)a:13n ur1a.aw sg2uqxgws 9o th 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 object after1g3nousaw2g: 1 us)rqxa9 .wa the collision?

  In an inelastic collision, if the momentu0ribzu r.8v hl7a:b y3gz)ug(m is conserved, then which of the following 3zgzubu l: bhr8g0yi)a.7 (r vstatements is true about kinetic energy?

  Two objects collide and stick together. K9in7bn v-vhn( inetic energy

  A 3.0-kg object moveswpq-xir 4u3 l4ngxf;. to the right at 4.0 m/s. It collides in a perfectly inelas uxqwgfx n34pl; .4i-rtic 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 objex,sug/m8-kp0k ;rz y:m id:wp ct and sticks. Which object experiences the larg s x/i kgpy,k-::m;mrp80wduzer magnitude of momentum change?

  In a game of pool, the white cue ball hits the #9 ball and is defl lk- os. cfc1jeos *9,ent5d.3qkb; pnected 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 o c9:n z(clqgr5f the following statements is fals5qc9r l(:ngzc e?

  Which of the following is a false st bsbvg2vc744batement?

  Tightrope walkers walk with a long flexibse.d q zeb vlm:.6yt:zxet6j +dm9;r 0le rod in order to

  A plane, flying horizontally, t n ;q9j(qij-yreleases a bomb, which explodes before hitting the ground. Neglecting air resistance, the center o(ty-q n9 jij;qf mass of the bomb fragments, just after the explosion

  Two cars collide head-on on a level friction-free road. The collision was complkk1*aa iuwo oiazif: :oo6,:9 etely inelastic and both cars quickly came to r ki:1:oi oa fw6o zku:,ia9o*aest during the collision. What is true about the velocity of this system's center of mass?

State Newton's second lgjjr ytd8iig0cf ,8t( 4wa 8b;aw for a system of particles.

  What is the momentum of a 20jl0:st4na kj6a id a6r)5emh400-kg truck traveling at 35 m/s?

  A 1200-kg ferryboat is moving south at 20 m/s. What is the m 3ny0wbve4s 3qyui8e/ agnitude of its momentumq3 43/usv e8b 0yiynew?

  A ball of mass 0.10 kg is dropped from a height of 12 m. Its momentum when it x) aaq2h h/of1zky;,s sth, hfs/ xyoqka;z12)a rikes the ground is

  Two identical 1500-kg cars isj 1e3j+a8m man8 *fmare moving perpendicular to each other. One moves with a speed of 25 m/s due north ansn8mama 81j f *mi3+ejd 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, strikepqkywi 4g:7 :us a wall and rebounds at 24 m/s. Wh7kyup wig4:: qat is the change in the momentum of the ball?

  A 0.060-kg tennis ball, initially moqql po3rdl:x5fxx/;5 ving at a speed of 12 m/s, is struck by a racket causing it to rebound in the opposite direp5;3f xdrxo5:l /qlqx ction at a speed of 18 m/s. What is the change in momentum of the ball?

  A 50-kg pitching machine (excluding the baseball) is placed on a frozen pon*j x 42yc*xwzid. The machine fires a 0.40-kg baseball with a speed of 35 m/s in the horizontal direction. x*j2*xcw y4ziWhat is the recoil speed of the pitching machine? (Assume negligible friction.)

  A 70-kg astronaut is space-walking outside the sp0*z ;x qf+uvxxqmq6 g9ace capsule 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 capv90xz q m;+*6xgqfx qusule?

  A small object with momentum 5.a18fmzk( 4n g-mmx.c b2awvt6 0 kgm/s approaches head-on a large object at rest. The small object bounce6 fa- ab1 vk(mx2zmt gwnc48.ms 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 4.0 m/s to greet your friend (40-kg massos*at 1khdi,00ab9*netfm0 p), who is standing still, with open arms. As you collide, while holdinan0khfpst0* bt9 a, i*de01mog each other, with what speed do you both move off together?

  A car of mass 1000 kg moves to th 1.iqf;tz+443nesi.m/b tra x f,vkqxe 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 a. 4qfa3fn ,+v1ik4 rzxtt .qm bs;x/eifter the collision?

  A 1000-kg car traveling at 25 m/s runs p5) / g,ahhi fwt2f,ezinto the rear of a stopped car that has a mass of 1500 kg and they stick together. What iz,ew af p5 hi,gth2)f/s the speed of the cars after the collision?

  A railroad freight car, mass 15,0g tzb lyk-i3ayu0b qmtpz7 ::8- n:f1q00 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 is the speed of the two cars after cy:i z:0utm1b lbp q7:qgkn 8-a-zfy 3toupling?

  A railroad car, of mass 200 kg, rolls with negligible friction on a horizontal tk0s q(vg:xroks .-;rcrack with a speed of 10 m/s. A 70-kg ssk;-rk q o.(0r:gcv sxtunt 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 txxwws i,0t6o us2p +i/o the log). With what speed doesw0pswtiis+,2/uo 6 xx the log move, with respect to the shore?

  A 4.0-N force acts for 3.0 s on an o+ ysif tu*mby6:8chy6bject. The force suddenly increases to 15 N and acts for one more second. What impulse was im6 bctf*h+iy :my 86syuparted by these forces to the object?

  A constant 9.0-N net force acts for 2c3 e r2f8b xj.o6kggd2.0 s on a 6.0-kg object. What is the object's chae6dk 3g rxgj8b2o .cf2nge of velocity?

  A 2000-kg car, travelingnxi*,zcg.a zktz2o -1 to the right at 30 m/s, collides with a brick wall and coz*z n2czot-,gxiak .1mes to rest in 0.20 s. What is the average force the car exerts on the wall?

  A 2.0-kg softball is j7.tok-f 3jbemju2v /zv+*um pitched to you at 20 m/s. You hit the ball back along the samj m2jk7 *u ezovjbf-/+vt3.ume 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 the bat exerted?

  A 0.10-kg ball is dropped onto a table top. The speeds of the ball right befozkf np59+j uw6re and right af nfwj6p9zku5 +ter 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 table top?

  A machine gun, of mass 35.0 kg, fires 50.0-gram bullets, with .34jgmmc ;kzcv kx*kb698absuk;vl6 a muzzle velocity of 750 m/s, at the rate of 300 rounds per minute. What is the average force exerted on the machine gun moun46lk3kucs m.m6;kkbx *v 8jbg;z9 cav t?

  A fire hose is turned on the door of a burn.i(vp kak,aq 0r3 owl1ing building in order to knock the door down. This requires a force of 1000 N. If the .(wr o31ka0lvqika,phose 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 12dlk2m l., kt;y0 kg per minute. It falls 3.20 m to the ground. Assuming the water doesn't splash up, ky2l;lm. ,dk twhat average force does it exert on the ground?

  A toy rocket, of mass 0.12 kg, achieves a velocity of 40 m/s aiuqp/(un r1-17 uczqf fter 3.0 s, when fired straight up. What average thrust forc( u-1zu /qqni7purcf1e does the rocket engine exert?

  Two astronauts, of masses 60 kg and 80 kg, are initially at rest in outer spa5d(j:r fr 6wexn;j fe0ce. They push each other apart. What is their separation after the lighter astronaut has moved 12 wj; 5f( nerjxde6:fr 0m?

  A 3.0-kg object moves to the right with a speed of 2.0 m/s. It collides in zv jp/w8si)0 a7gvdd* i7xz2 ba perfectly elastic collision with a 6.0-kg object moving to the 72sdzv ga7ij iv0 zwb8)*x /dpleft at 1.0 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 +x62w wdl6j dm ,dx5jw:p direction makes a head-on elastic collision with a 0.15 kg object initially at rest. lw6dmwd52 , wjjdp6:x What is the final velocity of the 0.10-kg object after collision?

  A 10.0-g bullet moving ;w0..uz pgig tat 300 m/s is fired into a 1.00-kg block at rest. The bullet emerges (the bullet does not get embedded in the block) with i.wg;tu pg0 z.half of its original speed. What is the velocity of the block right after the collision?

  A proton, of mass m, at rest, is strucku bd hqdcjp sv49cqc zc/6m60 x2,6l(c head-on 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 after the collision? (Assume the neutron's mass equals9c,bc /4v6 ls c06h qddxpj2cm(uzq6c the proton's mass.)

  A 50-gram ball moving +10 m/s c- lm,9cb)yrpx76dab qollides head-on with a stationary ball of mass 100 g. The collision is elastic. Whatm6arxq 7bcly, 9p)-b d is the speed of each ball immediately after the collision?

A ball of mass 400 g moving toward the east with a speed o35-+ uwfzps31kalft2; vthfw o 0k4mv f 3.70 m/s collides head-on with a 200 g ball m5v;3a+- 1zltktw3 fp kos2 0wuhf fv4sitting 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 ofdb 37 fa c4h/lr/w)zun 5.0 m/s. It collides head-on with a 3.0 kg mass at rest. If the collision is perfectly inelastic, what is the s 3cfbw)rd4/hz / na7lupeed of the masses after the collision?

  A 2.0-kg mass moving to the:trt.4h4 8w:sk+nb9k te:n8e uouc z m east at a speed of 4.0 m/s collides head-on in a perfe s8t98k ::ruu etok.tzm 4n4h+e wcbn:ctly inelastic collision with a stationary 2.0-kg mass. How much kinetic energy is lost during this collision?

  A car of mass m, traveling with a velocity v, strikes a parkehtipbqu/xhn f4l;7* .d 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 this collisiot7h/upibfx4q*hn. ;l n?

A 15-g bullet traveling 213 m/s in a vertical direction buries itself cvr84 bxcp s-h2y9b2 kin a 2.4-kg block of wood a reskc9bcx hyvb 2-4p8 sr2t 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 east collides with a 3000 w;gc: ,wof5vz-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 wcow:v z ;f5,gafter collision?

  A 1500-kg car traveling at 90.0 km/h east collides with a 3000-kg ;o , lpbny1fqnie( )p3car traveling at 60.0 km/h south. The two cars stick together after the collision. (See Fig. 7-1.) Whatne3 pl1p,(qfy;ob n )i is the direction of motion of the cars after collision?

  Two objects move on a level frictionless surface. Object A moves east withqewp 6tv j90w86zg1 xj a momentum of 24 kgm/s. Object B mo6p8 wet wgjjq0zx9v1 6ves 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 towar1qfyhdm7 i :q 9e,q jzq)vw4t)d 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 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.1 dijmq4 ytvqzq97,weh:fq)))

  A 4.00-kg mass sits at the origin, and a 10.0-kg l 8m typsc6fy9bg9kos9- *szru/6a 7i mass sits at x = + 21.0 m. Where is the center of masr76/z 68-bfsasu9kmycg *isp lo9t 9ys on the x-axis?

  The center of mass of a two-paiz2rnp+rt ;qb(o;b6+jx2c xt rticle system is at the origin. One particle is located at (3.0 m, 0) and hasnrcp2z+o;(b ; jbx+i2r qt6 tx a mass of 2.0 kg. What is the location of the second mass of 3.0 kg?

  Three masses are positioned as fq 4jq :x+nrv(gollows: 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 of mas+ :4r(gvnqqxjs.

  Three masses, 1.0 kg, 2.0 kg, and 3 yq + /lbkg5dje)g*u9qhrhi33.0 kg, are located at (0, 0), (1.0 m, 1.0 m), and (2.0 m, -2.0 m), respectively. What is the location of the center of maqglhr3u+9*/idk5)e y bh3jqg ss of the system?

  A 3.0-kg mass is positi zp1 ()nbicx8 qa6ppd-oned at (0, 8.0), and a 1.0-kg mass is positioned at (12, 0). What are the zdaq ipn8c 1-) x6bp(pcoordinates 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 pos(f9tn4 wdlxv d2klt;+ition of the CM of a whole leg including the foot when the leg is stretched straight out. Assume the person i+9d d l4tfv kn(;wx2lts 1.60 m tall.