What is the SI unit of momentummw9k;hlxm )q8 ?

  When a cannon fires a cannonball, the cannon will recoil backg wic3j8t )mfr sn)lib,*zv1 i9* ax2yward because the

  A freight car moves along a frictionless level railroad track at constant spe- 6,..gx71ilo naxze oo(esjqed. The car is open on top. A large load of coa nx,-e.zjo.xo l(7is q oag16el is suddenly dumped into the car. What happens to the velocity of the car?

  A child falls sideways off a sled while sl 8uc5u4qdfo rj7)gyt (edding on frictionless ice. What happens to the velocity ofgdfo5 r uq )j(tc78yu4 the sled?

  A rubber ball and a lump of putty have equal mass. They are threec,2fo(qbut .+ a8alq5r0qz own with equal speed against a wall. The ball bouncesa85(to2 cee ql.rq,a fuqbz+0 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 moving with a momentum p. How would you reprn.e q,2mg -4g7 atwtbl:nlhw, esent its kinetic energy in terms of th 4q l,btenwg :l,7m2a.wth- ngese two quantities?

  If you pitch a baseball with twice the kinetilvztwusnon91; *8 s 7ic energy you gave it in the previousoz7;nwut8l *sv ni1 s9 pitch, the magnitude of its momentum is

State Newton's second law in terms of momentsi wzh5ik .)s1um.

State the law of conservation of momentuxv : :mwc3rf,c82soukm.

  The area under the curve on bi2yx j55u9heyzy 0k +a Force versus time (F vs. t) graph represents

  Which of the following is an accurate (- sh f(a7 dchq/mocwcrzu,75v 0 ch9tstatement?

  A small car meshes with a large t eqd)q23.oos kruck in a head-on collision. Which of the following statements concerning the magnitukeq)ds2o .oq3 de of the average collision force is correct?

  Two equal mass balls (one red and the other blue) are dropped frlbj,t4zzsb94g8/9xihepc7. e2w g3 f fvznv 9 om the same height, and rebound off the floor. The red ball rebounds to a higher position. Which ball is subjected to the grea9nf2zvc.be3/el8gg whx4bjsifv z9 t,4 z79 pter magnitude of impulse during its collision with the floor?

  A Ping-Pong ball moving east at a speed of 4 m/s, collides w0 c7t,hbce ,mx.d:nrjith a stationary bowling ball. The Ping-Pong ball bouc e0t:mh 7,cx,bndrj .nces 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 momentumr 5 elfca: bf:(enom)6

  A 3.0-kg object moves to th pff5)oz+d7gm e 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 c+ fd)pgzof5 m7orrect?

  A 100-kg football linebacker moving at 2.0 m/s tackles heabz*u1 7dipey 4uq35+ /nulyp bd-on an 80-kg halfback runl*qbu1/4yyb n3 e +uipd5u7pzning
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 tklo0( - -xnwkrx2b5 vihe following statements is true abol --rwk25v 0x(kxiob nut kinetic energy?

  When is kinetic energy coicqxw p1r:u *)fh5 vo1gva)1f nserved?

  In a game of pool, the white cue ball hits the #5 ball and stops, while the #5 az e nx bekkyx +72;t6jra6zz/2(n,er ball moves awa,barxz( eete z2j72n 6r xyakz/nk+; 6y with the same velocity as the cue ball had originally. The type of collision is

  When a light beach ball rolling with a speed elgn fnpdy-r60p w44nr 0;tw s,*pk)tof 6.0 m/s collides with a heavy exercise ball at rest, the beach ball's speed after the collisi;40rewr pytpw -0d)6ns k,gt *lnfn4 pon will be, approximately,

  A golf ball traveling 3.0 m/s to the right collides in a healzoq:0u+ n v 1etwte 5h60f+xwd-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 imm newwtxzluh 0 qf 16v5o+0:te+ediately after the collision is

  A rubber ball with a speed of 5.0 m/s coldka4k) t t 7y j-qwewm,h:oo2:lides head-on elastically with an identical ball at rest. What is the speed of the initially stopped ball after k w:4 q oa7- jh:eotw2kmd)t,ythe collision?

  A very heavy object moving with speed tk3/ x+debh zbtob*r 8co3 d0)v collides head-on with a very light object at rest. The collision is elastic, and there is no friction. The heavy object barely slows down. What isb83h0 ktdx/r)o +ocbtz*e3db the speed of the light object after the collision?

  A very light object moving with speed v collides head-on a*j 5jbx5(gz ecp;ld. zvb)7uwith a very heavy object at rest, ixj;bg*e55bc.zva7pl duj z()n 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 k,v w 1+nl:uyxwith a yellow ball of equy: 1xu, kvw+nlal 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 velocity v collides head-on withdwsz 1 wjbzv),os*y/u(r; fao k:(9i o a very light object moving with velocity -v. The collision is elast(o:j/ soysw(ko9; *zfa ) ,1birwvdu zic, 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 momentul8oruj5 ;a uv+m is conserved, then which of the followinl oav+r u;5ju8g statements is true about kinetic energy?

  Two objects collide and stic0gzqagz5 4y/nz:bc k3 6i h-msk together. Kinetic energy

  A 3.0-kg object moves to the right at 4.0 m/s. It collides in a perfect oj;v8*horpm , g6q5itly inelastpqohj5g;r8 t,6io*v mic 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 sticks. Which hi lk:dfh)2nc y2ujy(g l 1)4zobject experiences the larger magnitn)d(fhc21y2u l h ki4jlzyg: )ude of momentum change?

  In a game of pool, the white cue ball hits the #9 ball and is deflected a l-*ihwa:g .voc+ s i3,xihonzhc/9j8t 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 m9fpq7( eaw5hd . Which of the following statements is false? p af(5qehw79d

  Which of the followingt y7bo1 mrt63wsa-9dx is a false statement?

  Tightrope walkers walk with a long flexible rodkuifvk5 b..q ; in order to

  A plane, flying horizontally, releases a bomb, whic:xfy0*2jwxuu:)w w xr h explodes before hitting the ground. Neglecting air resista:wyx x uxr2w) 0uj:*wfnce, the center of mass of the bomb fragments, just after the explosion

  Two cars collide head-on o;3bm+,kq9w a q(wfnn,qtl ah0n a level friction-free road. The collision was completely inelastic and both ca3(aq n,n0kma fl qt9wbq,+w h;rs 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 forupu:sk vt gjlc(m,+dv*f7 jle,;1 mx, a system of particles.

  What is the momentum of a 20b fjl.zlx68j q6b*. ho00-kg truck traveling at 35 m/s?

  A 1200-kg ferryboat is moving south at 20 m/s. What is the magnitude of 6rp y/xji),sf its momen,r)/j i6spfy xtum?

  A ball of mass 0.10 :w jdz4yu;evh2;gaf:kg is dropped from a height of 12 m. Its momentum when it strikes the grou:edf v4yw ;h:uag2 ;zjnd is

  Two identical 1500-kg cars are moving perpendicular to each other. One mo-/32ecrm sz,tbo8v4oy 0zxjkves with a speed of 25 m/s due north and the other moves at vrz ck04sbjo3x-2z/ y,8emt o 15 m/s due east. What is the total momentum of the system?

  A handball of mass 0.10 kg, travelieaxwww6(5 xr2bu;wirv3c p, 9ng horizontally at 30 m/s, strikes a wall and reb pu,9 e6 ; x2vxwbwcrrwawi53(ounds at 24 m/s. What is the change in the momentum of the ball?

  A 0.060-kg tennis balh;el h v-xxrtv8g:8px9ot7a 7 l, initially moving at a speed of 12 m/s, is struck by a racket causing it a7;t: -xrv lxvtoepg h98 8hx7to 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 (excluding the baseball) is placed on a frozen+ k bofe0,n)ploz59rfa -yl)5rfj( ri pond. The machine fires a 0.40-kg baseball with a speed of 35 m/s in the horizontal direction. What is the l(+r) kn y i0rr9f-ebojazl )f5,fpo 5recoil speed of the pitching machine? (Assume negligible friction.)

  A 70-kg astronaut is space-walking outside the space7iisnaee*6wl,(yu6 wy n5zc27 g:unk 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 uy*i26gs e7an: c(wn6ni 5zel7k, wuy 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 large object at x(ny)/ +eft5y+jk6m me:nrh grest. The small object bounces straight bac: )me+ e5y jnyn/6(rhk+gtmf xk 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 frie( 4/wdzkuddf 3l8rt fpij.0u4nd (40-kg mass), who is standing still, with open arms. As you collide, while holding fj4(d d i4t3uwzudp r.k08f/leach other, with what speed do you both move off together?

  A car of mass 1000 kg moves tocg0pihk0n7xrcy5ywl5p o 61- the right along a level, straight road at a speed of 6.0 m/s. It collides directly with a stopped 5w kp5nyi7x hy6r-0lpg01c o cmotorcycle 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 stopped car that haszik57v.mxy 5w a mass of 1500 kg and they stick together. What is the speed of themk v5zy.75x iw cars after the collision?

  A railroad freight car, mass 15e*g6di c9m r2w,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, inigi2m6c9w *rdetially 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 n d68jer3 ty59n5rh im:f td8eyegligible 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 car. How fast will tjd yt6h8ey355f it n r9e8mdr:he car be moving after this happens?

  A 60-kg person walks on a 100-kg log at the rate of 0.80 m/s (wi ivke 2mrrzo0)w8 -puzyzo85 .th respect to the log). With woo88ei ury 5krw. 0- zv2)mzpzhat speed does the log move, with respect to the shore?

  A 4.0-N force acts for 3.0 s(z0m s5r3skhq on an object. The force suddenly increases to 15 N and acts for one more seconzss( q hr3m50kd. What impulse was imparted by these forces to the object?

  A constant 9.0-N net force acts for 2.0 s o.z49)7d-gvlsp gz( 8 b kahwoyn a 6.0-kg object. What is the object's change of velocit(wgahbvldz-7.kp)zy g s94 8 oy?

  A 2000-kg car, traveling to the right a)84m3vk .; ndcipvx xyt 30 m/s, collides with a brick wall and comes to rest in 0.20 s. Whmy8cvx3x 4n)d .v ipk;at is the average force the car exerts on the wall?

  A 2.0-kg softball is pitched to you at 20 m/seyik ky+e;tp) x-1u .ctsl( 1v. You hit the ball back along the same path, and at the same speed. If the ba.1vyt lp i+csyek ;)e -x1k(utt 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 o gkl q9kn *+.o)x0ccwtnto 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 bac lc+9.kokwxqtn) g0 *ll 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, )pt8k gu9p j)3p+aahe fires 50.0-gram bullets, with a muzzle velocity o3 8hpga)) 9tukpj+ape f 750 m/s, at the rate 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 to knock the dx3c7nrb. eyj7 oor 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, assuming the water doesn't bouncex . ynbcrj7e37 back?

  Water runs out of a horizontal drainpipe sr)5ikg g:bo+ at the rate of 120 kg per minute. It falls 3.20 m to the ground. Assuming t b 5:gosi)r+gkhe water doesn't splash up, what average force does it exert on the ground?

  A toy rocket, of mass 0.12 kg, achievex )*p a) fpmb)+h7wedvig3kc1s a velocity of 40 m/s after 3.0 s, when fired straigxwm gica) hfdp3)p 7e+k1)bv*ht up. What average thrust force does the rocket engine exert?

  Two astronauts, of masses 60 kg and 80 kg,zm/f5rro .roq +:,nk.mde qxc r6.of) are initially at rest in outer space. They push each other apart. What is their separat.).qron/ f: zrrk, mdx r om.5o6+fqecion after the lighter astronaut has moved 12 m?

  A 3.0-kg object moves to thd* opjp8h ehy006aypq n6q0h)4x5 m nze right with a speed of 2.0 m/s. It collides in a perfectly elah5yz)yp mph n80e a6dxpoh*j n6q400q stic collision 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 head-;h5 ,ht3rk vfsx(y4q;ih ut8d on elastic collision with a 0.1q hh rvi8; ,usfxk3;(dh4yt t55 kg object 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 1.00-kg block at rewtf57m pbba- r0bs9iw8at,1 kst. The bullet emerges (the bullet does not get embedded in the block) wit b7r,afks w8 9ibt1pw5a-bt0mh half of its original speed. What is the velocity of the block right after the collision?

  A proton, of mass m, at resugsf2+k;p3 c 3z 20lrr/rnuxst, is struck 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 equals the proton's magrn;0rsz/ pc2 ursfu x33+ k2lss.)

  A 50-gram ball movinio26.9 l5*m vrcduvrfg +10 m/s collides head-on with a stationary ball of mass 100 g. The collision is elastic. What is the speed oulrv cd. i r62f5*v9omf each ball immediately after the collision?

A ball of mass 400 g moving toward the east with axx(d,s ; hkicnbm,fhb+s. s:; speed of 3.70 m/s collides head-on with a 200 g ball sitting at rest. The collision is perfectly elastic.f:h m;k n sdbc,xib+ ,ss(;.hx
(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 ok((wr ,mz;sjwith a speed of 5.0 m/s. It collides head-on with a 3.0 kg mass at rest. If the collision is perfectly inelastic, wha(wk,mjzo;( rs t is the speed of the masses after the collision?

  A 2.0-kg mass moving to t eoz hi3 58w(yeqm4l,qhe east at a speed of 4.0 m/s collides head-on in a perfectly inelastic collision with a stationary qqli5,e8ymwh 3(oz4e2.0-kg mass. How much kinetic energy is lost during this collision?

  A car of mass m, traveling withchkeeh c1,cfq,uffw s *z;13nl )6 )dh a velocity v, strikes a parked station wagon, who's mass is 2m. The bumpers lock toget,k );zn16c uffdle h,*1ec fq)swh 3chher in this head-on inelastic collision. What fraction of the initial kinetic energy is lost in this collision?

A 15-g bullet traveling 213 m/s in a vertical direction/*4p1c+ rob hovco4k w buries itself in a 2.4-kg block of wookvw4c1h* o4 +roo cb/pd a rest 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 col592gqc f )onejlides with a 3000-kg car traveling at 60.0 km/h cneo g2f j)59qsouth. The two cars stick 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 km/h east co/* w khpbpl)yb53t i1yllides 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 tl)1/ hiw3b5ybpy* kpmotion of the cars after collision?

  Two objects move on a level frictionless surface. Object A moves east with a m33hwrp0b3l9 sukxeh f/fpx q8+e +)jdomentum of 24 kgm/s. Object B moves north with momentum 10 kgm/s. They make a perfp+3ku qxb3rxf3edh8jes9h )wflp 0 /+ectly inelastic collision. What is the magnitude of their combined momentum after the collision?

  A small bomb, of mass 10 kg, is moving toward the North with a velocity osgq;( uwy,i 5gf 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 withwui;(g,ys5q g 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, aew-c5m s m5gipeam:,, nd a 10.0-kg mass sits at x = + 21.0 m. Where is the center of mi55a :-esemwmmgp, c,ass on the x-axis?

  The center of mass of a two-particle sh8r6 x;(b r+5dmbbn kbystem 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 of the seco(rkb rhb68+n x;m5bbdnd mass of 3.0 kg?

  Three masses are positioned as follows: 2.0 kg at (0, 0), 2.0 kguccsc77zk0z8cut uu8 1t ,4t(k evmi; at (2.0, 0), and 4.0 ksvukk uu,z4u 7c tei(m 8810ttccz;c7g 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. xyuwfgc/2c(a fxix uz16h3hwre+0 7e) /f2 kf0 m, 1.0 m), and (2.0 m, -2.0 m), respecu)weff7 x fw1(3rz/6ic2khu 20xg/+fc xa eyh tively. 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 positionemre * mo:7lg a5m- cjjexr2k6;d at (12, 0). What are the coordinates of a 4.0-kg mass which will xcm;-o6 km jm7lg2 eaer5*r:jresult 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 positio6p.1kk -mfwdltqs;y ru9xa : 4n of the CM of a whole leg including the foot when the leg is stretched straight out. Assume the perso:ufw qk.9dst1 6 -yx;pmrk 4lan is 1.60 m tall.