What is the SI unit of momentum?+pf,h7p bj f )6qay:vt

  When a cannon fires a cannonball, the cannon will recos ( iknrwbc 3u44)fwvh*q0zp9il backward because the

  A freight car moves along a frictionless level railroad track at constant speljk u28 qin5,ded. Thejid,l82q kun 5 car is open on top. A large load of coal is suddenly dumped into the car. What happens to the velocity of the car?

  A child falls sideways off a sled while sledding on frictionless ice. What hw9srhvr+k9/ bappens to the velocity /+ h9rs9vk bwrof the sled?

  A rubber ball and a lump of putty have equal mass. They are 8kk;3l1i9ot 1gjjihj es ;h2othrown with equal speed against a wall. The ball bounces back with nearly the same speed with which it hit. The putty sticks to ;9koh1i8 i o lj1j;s2jhetk3 gthe wall. Which objects experiences the greater momentum change?

  A sailboat of mass m is moving with a msf:f u d(6nap8t 7ri+fomentum p. How would you represent its kinetic energy in termdff it 7+su8pa:f rn(6s of these two quantities?

  If you pitch a baseball with twice the kinetic energy you gave it in the previouvhq(r 9po0u5 fs pitch, the magnitude of its momentumvoq 95hufr0( p is

State Newton's second law in terms of so (:l qt,*jsuo fp.j.momentum.

State the law of conservation ofz12rs+ qt4skpq a9ckpz 63w+n momentum.

  The area under the curve on a Force versus time (F vs. t) graph repre, 4b+ 2lkswi gvndkrs-ap9(2fsents

  Which of the following is an accurate statement?i7h 5etkxg/;:g5.zoxutcfl 1

  A small car meshes wu62 ws d7mcc6f.ezws( ith a large truck in a head-on collision. Which of the following statements co6csfc6. e 72wzds uw(mncerning the magnitude of the average collision force is correct?

  Two equal mass balls (one red and the other blue)s*c ba;x3vuzjbs/x20yharv)4(tf 3n*a umf / are dropped from the same height, and rebound off the floor. The red *bs a(;0bx*zvnvat us3/m 2fcafrx u4j 3/hy)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, col h8 nbdq;ls):(ws rdu0rckdm(,6efl6lides 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 ob u6hr :el) l(m(qbn0df;ds86ksdrc,w ject experiences the greater magnitude impulse during the collision?

  Two objects collide and bounce off each other. Linear mome5tlt y(ss;i by7 uqs-.ntum

  A 3.0-kg object moves to the right at 4.0 m/s. It collides head-on wit k)zs dp.7m u5rumaz.l*ii,5fflh9i .h a 6.0-kg object moving to the left at 2.0 m/ hrd)pf 5.*lius,7zl.fu miim9a zk5 .s. Which statement is correct?

  A 100-kg football linebacker movin/cz d;42q o vdosin91pg at 2.0 m/s tackles head-on an 80-kg halfback rn2do/vcq z1; sodp4i9unning
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 the r2+a /qtyc87nxzg/ l/ mwm fk+following n+/ qzgf/lcmx 7a w8m/t2+kyr statements is true about kinetic energy?

  When is kinetic energy conservef -dxcn pc(z1 (1pg)sh8liwg(r ,a,zld?

  In a game of pool, the white cue ball hits the #5 ball4r7zx wk/b w+oa ,o(cr and stops, while the #5 ball moves away with the same velocity as the cue ball hadc +zwrw oa7x,(rk/4 ob originally. The type of collision is

  When a light beach ball rolling with a speed of 6.0 m/s collides w3k3n xte,xm9y ,hf)z p n77chyith a heavy exercise ball at rest, the beach ball's speed after the collision will be, approxn 7c zx3,h9kx 7e,ypfmt3 y)nhimately,

  A golf ball traveling 3.0 m/s to th ux,jzf4ea/zp3 7mjz*e right collides in 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 immedia f*pj/ mej7zz3ux ,z4ately after the collision is

  A rubber ball with a speed of 5.0 m/s collides head-on eladu4x6z;z l *b+fmhq;pi 7jt f;stically with an identical balf7fih+pd6u j;zm4;t qlb*xz; l at rest. What is the speed of the initially stopped ball after the collision?

  A very heavy object moving with speed v collides herkg5+* c6 xj4wy6scf 17m gwcjl5j9rwad-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 af j4s6wg7wrck*x 6jwm1 9fcr +g5lyc5 jter the collision?

  A very light object moving with speedpfl mfnm-5k6.tci mh656kpwt 2o gj9* v collides 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 c5fwpt2 h gpkj*ncmif9- tk6l6 mmo.5 6ollision is

  A red ball with a velocity of +3 (z b( vnjq9mlss7)7zcp9:icu .0 m/s collides head-on with a yellow ball of equal mass moving with a velocity of -2.0 m/s. What is the v: lvcb9 s)(sjcznpz7im uq(79elocity of the yellow ball after the collision?

  A very heavy object moving with velocity v collides head-on with4o*xzqkiv h -+ a very light object moving with velocity -v. The collision is elastic, and there is no f-+ih4 zq ovx*kriction. The heavy object barely slows down. What is the speed of the light object after the collision?

  In an inelastic collision, if theb 0w8yss8 at,z 3duwzt k5r6g0 momentum is conserved, then which of the following statements is true abo 0dzrgtk w,8ybw8s0t 5s3uz6aut kinetic energy?

  Two objects collide and stick t 5znt z-vi+cg+ vp6u0logether. Kinetic energy

  A 3.0-kg object moves to the right at 4- +y:q z.ynzsa.0 m/s. It collides in a perfectly inelasy.z a: yzsn+-qtic 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 sticsq 3g.x kmq*en9 od.yz((oii4ks. Which object experiences the la*qo4k gdy ie9q3noi(.x(z.ms rger magnitude of momentum change?

  In a game of pool, the white cue ball hits the #9 ball and is deflectedjcfw3fodcwcu x 811(* u h 09c rhgi(zasmy8*+ 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 statements is faeidi, 4dbl 6/ea1g;ohlse1ih,64;l i gd/beeoad?

  Which of the following is a false statemeng,z tz:kvfjz x d6;qg4 p-4g9it?

  Tightrope walkers walk with a long flexible rod in l1uh7nru(0hq/za( q jft 6l*n order to

  A plane, flying horizontally, releases a bomb, which explodes bx d)qa5j9 w(xce)xu-uefore hitting the gq9w exx(ca)u xudj5 )-round. Neglecting air resistance, the center of mass of the bomb fragments, just after the explosion

  Two cars collide head-on on a level friction-fren a/:pvg6 co l eq1y(6nf1lcvvvv7;3 le road. The collision was completely inelastic and b6qfc;/1 p :gvl(av n76ve l3nv 1yclvooth cars quickly came to rest during the collision. What is true about the velocity of this system's center of mass?

State Newton's second law for aw6gzs -tjn2 /r system of particles.

  What is the momentum of a 2000-kg truck trav80i j1zdf.) , t*rr a gi6ytpo7bplp9meling at 35 m/s?

  A 1200-kg ferryboat is moving south at 20 m/s. What is ts6 kj9m yrcc-v +q*sw;he magnitude of its momes; 9 * wy-vkjcsr+mqc6ntum?

  A ball of mass 0.10 kg is dropped from a height of 12 m. Its momentum when/ m 8yitkcu1n/ it strikes the/1/8i ynu mtkc ground is

  Two identical 1500-kg cars are moving perpendicular to each othev5.bzn1eg ju.b kg5u ;r. One moves with a speed of 25 m/s due north a.ju1g uz5;5gb ev .nbknd 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, strikes a wallr0 3 g* rp8rm:kz7dewxvei,*w and rebounds at 24 m/s. What is the chan0:3rrp,m zdeg* iw 87vekwx*rge in the momentum of the ball?

  A 0.060-kg tennis ball, initially moving at a speed0o 7,nr: wh6;wrov+ o gvr*efc 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 change in mo +w*h0e6f o wo;cr:,7rrnvv ogmentum of the ball?

  A 50-kg pitching machine (excluding the baseball) is placed on a froze1ccokxs-9;v h n pond. The machine fires a 0.40-kg baseh;okxvc1-c s9ball 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 capsthy,uao; a;gj/p5m e :a u+ls.ule and is stationary when the tether line breaks. As a means of ret.el j;o;,+ph5 u:mga ats/auy urning 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/(w /a,i)+g env l(jsjsjl/tm 5.0 kgm/s approaches head-on a large object at rest. The small object bounces straight back with ans(avmlil //jwg/st+j)j(e , 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.b )n6l jm ndmrp1y/9o m/s to greet your friend (40-kg mass), who is standing still, with open arms. As 9 b)npyj lr/.mn6od1m you collide, while holding each other, with what speed do you both move off together?

  A car of mass 1000 kg moves to t+ebo,an/ n)xj he 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 momentuax/bnj) e+n ,om after the collision?

  A 1000-kg car traveling at 25 m/s runs into thewpl;kgv o/tl:e x;89z rear of a stopped car that has a mass of 1500 kg and they stick together. What is the speed of the capg/e;;zt:w x lo89lv krs after the collision?

  A railroad freight car, mass 15,000 kg, is *vnl mc0)yd/;otd k n 6dy(.wballowed 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 n;dy y bc6(ow/n.0vdm*lt)kd, 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 witdu8or ,/qv(jl h 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.,v /oq (8dlrju0 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*( p7 6x-xb;nmb9*cr eshspcfpg i47v the rate of 0.80 m/s (with respect to the log)fpmp p b6c cn 4s(vb7;grx* shi*x97e-. With what speed does the log move, with respect to the shore?

  A 4.0-N force acts for 3.0 s on anb8xgb. )k)fmiwf po/) object. The force suddenly increases to 15 N and acts for one more second. W/gf)i8)p )wfo.xkb bmhat impulse was imparted by these forces to the object?

  A constant 9.0-N net fo/xfoxekdo 2 2iv8 o ,x7gxl51grce acts for 2.0 s on a 6.0-kg object. What is the object's change of veloci g5o/ie,x78v2kxfx1do2l xog ty?

  A 2000-kg car, traveling to thncg:qzyh9 -j, idpc(9 e right at 30 m/s, collides with a brick wall and comes to , 9dqy9z jpic-:hnc( grest in 0.20 s. What is the average force the car exerts on the wall?

  A 2.0-kg softball is pi:c3vz+gpn x2n:b h+j fd lo4,atched to you at 20 m/s. You hit the ball back along the same path, and at the same speed. If the bat was in 2v+o hbxp c3nfd,gjz:na:4+lcontact 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(cqqsw n(gh85 a table top. The 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 b8c( ng(hw5q qsy the table top?

  A machine gun, of masymwayd0ivijy/ c ,e7sxj6c..w10gfo w;a 40 ls 35.0 kg, fires 50.0-gram bullets, with a muzzle velocity of 750 m/s, at the rate of 300 rounds per minutix yjm li1vyfjo7g /6ww..cy;c 0sw4a00d,eae. What is the average force exerted on the machine gun mount?

  A fire hose is turned on the door of a burcfs8jdac): k,ning building in order to 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 stream needed, akf8sj:)c dac ,ssuming the water doesn't bounce back?

  Water runs out of a horizontal drainpipe at the rate of 120 kg per minute. It fx:wkj-njo -;n j;8ndualls 3.20 m to the ground. Assw-unn: n;j8xo ;d -jjkuming 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/s after 3v6*o bu5:pmxz f8/mj z.0 s, when fired straight up. What average thrust fmbf* 68oz :5zpvxmj/uorce does the rocket engine exert?

  Two astronauts, of mass4 qyt+t.k)j 1z dxna8jes 60 kg and 80 kg, are initially at rest in outer space. They j8jtadxt).n 4 y k1q+zpush each other apart. What is their separation after the lighter astronaut has moved 12 m?

  A 3.0-kg object moves to the right with a speed of 2,67r3 inlzirk .0 m/s. It collides in a perfectly elastic con r6i,lk3zi 7rllision 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 0.20 m/s in the +x direction makes a fdg:p9 gnam t6(5g2tuhead-on elastic collision with a 0.15 kg object initially at rest. What is the final velocity of the 0.10d n2pugtt9gm(fa:6g5-kg object after collision?

  A 10.0-g bullet moving at 300 m/s is fired into a 1.00-kg ddv)dl i4ove c7k08+jblock at rest. The bullet emerges (the bullet does not get embedded in the block) with half of 4le v )i+8vdd 7dk0ocjits original speed. What is the velocity of the block right after the collision?

  A proton, of mass m, at rest, is struck head-okjt0qz hh 2bu01c8s7r n 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 neut0 2hksb0hju7ctq 18rzron's mass equals the proton's mass.)

  A 50-gram ball moving +10 m/s coll/-ua 9ish35pe3 l jz2jti 6empides head-on with a stationary ball of mass 100 g. The collision is elastic. What is the speed of each ball iijp2ahz-ieu9t e/563j 3s m lpmmediately after the collision?

A ball of mass 400 g moving toward the east with a speed of 3kto4h3aet oz8 +2rh.c.70 m/s collides head-on with a 200 g ball sitting at rest. 2t4h8.a ekto+3zorc hThe 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 sp76 yux *y6xtlgeed of 5.0 m/s. It collides head-on with a 3.0 kg mass at 6t*yg xu 6y7lxrest. If the collision is perfectly inelastic, what is the speed of the masses after the collision?

  A 2.0-kg mass moving to the east at -me;vjgnqd (dis o hz7:)2;dv a speed 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 this collis2 js(7 g me-;v ;ihqvodz)ndd:ion?

  A car of mass m, traveling with a velocity v, strikes a parked station wt 7dr uu/6bzd4agon, 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 czd ru7/4ub6 tdollision?

A 15-g bullet traveling f vd 7sx9 l,t/3q:whtxoqw4r2 213 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 bulleqvdx 7t3 f: x,h/ow9sl4 rtwq2t/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 collid 4bwym uy(or 1es-w0b+es 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 speedym-(sb1 4ybu0eo ww+ r of the cars after collision?

  A 1500-kg car traveling at 90.0 km/h east col48vw;ux- m; .e;p tk,x) xetd,pbgwkclides with a 3000-kg car traveling at 60.0 km/h sou4;x; tpm vctx)u eed ;p,wwkbg.- x,8kth. 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. Object Aa7r + g gax4j(ul6+rgu moves 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 combined momga6j7ra lguug+(rx+ 4 entum after the collision?

  A small bomb, of mass 10 kg, is moving toward the North with a vel( lhphu 3g:u*5e wq5 .jd/(plp7whp lzocity of 4.0 m/s. It explodes into three fragments: a 5.0-kg fragment moving west with a spee(*jg5pplh7 u./h(z: 3pu ell wdpwh5qd 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. 0 /0r,jfsiuy7nvx/s a Where i s7af0u0,x /v/irnysjs the center of mass on the x-axis?

  The center of mass odus n)9fk .e5qf a two-particle system is at the origin. One particle is located at (3.0 m, 0) and has a mass of 2.0 kg. What is the location o 5)fnd.ku 9sqef the second mass of 3.0 kg?

  Three masses are positioned as follows: 2.0 kg at (0, 0), 2.0 kg at 4 dz42m q trp,81rc( mhs(jdfk(2.0, 0), and 4.0 kg at (2.0, 1.0). Determine the coordinates of the c2t4zmh1,k pr4(d fmc s(rd8qjenter of mass.

  Three masses, 1.0 kg, 2.0 kg, and 3.0 kg, are located at (4a y ftf7xa;6 e3.kdnt0, 0), (1.0 m, 1.0 m), and (2.0 m, -2.0 m), respectively. What is the locf.fea;yt6xka tnd7 34ation 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 positida xk7;8 jxnc7z.c d *v,vz75eac-ca roned at (12, 0). Whatda vnrc vk*75x .ceza-za ;7d8,cc7 xj are the coordinates 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 position of the CM of a wi30v o49ohoc o:i0ltnhole leg including the foot when the leg is stretched straight out. 34n:hv 0iioc oo90tlo Assume the person is 1.60 m tall.