What is the SI unit of momentumsdja:54g:t zl ?

  When a cannon fires a cannonball, the cann.tc.od4u (hhpufoz 9* on will recoil backward because the

  A freight car moves alow42pl8e/ c7lcmf8s* i7 ifnlu ng a frictionless level railroad track at constant speed. The car is open on top. A large load of coal is suddenly dumped i 8ius*n4c/7lflp2w ml7c if8ento the car. What happens to the velocity of the car?

  A child falls sidewao-1u yid54lha ys off a sled while sledding on frictionless ice. What happens to the velocity ool 4uhyai-15df the sled?

  A rubber ball and a lump of pg7;bf 6.ykfn vutty have equal mass. They are thrown with equal speed against a wall. The ball bounces back with nearly the same speedg v7;f n.fbk6y 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 re fk6s:wzfcet59z i9 h0present its kinetiwe6h0izfkz9: cf t95sc energy in terms of these two quantities?

  If you pitch a baseball with twice the kinetic energy you gave it in t xx9k3 z9gzo.cw9b t.nhe previous pitch, the magnitude of its momentum io k9.xxgn.zbz9wt 9 c3s

State Newton's second l :w7m*jt; +ew qs1ttjjaw in terms of momentum.

State the law of conservation of mom9v0su(w +ky2ytax6pztdwhz9 s 7n8 .tentum.

  The area under the curve on a Force ver3s(smq fb*w,z sus time (F vs. t) graph represents

  Which of the followinh1nmwp rr:trv4i :9+7virar: g is an accurate statement?

  A small car meshes with a h* p3o,arxiz n2/kv4e0zem,m large truck in a head-on collision. Which of the following statements concerning the magn2m/ *a,zp xihnmko e30ve,rz4itude of the average collision force is correct?

  Two equal mass balls (one red and the other blue) are (cv-f vsts2lm0 h12xk dropped from the same height, and rebound off the floor. The red ball rebounds to a hilv- sx(1v2fs2mh kt 0cgher 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, collidesd2i(ovl) ji/o 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 grea iodv/l )oji2(ter magnitude impulse during the collision?

  Two objects collide and bounce off ean:x t5q3.m ha+m5cttoch other. Linear momentum

  A 3.0-kg object moves to the right at 4.0 m/s. It collideso x3z7+/tlzc k +j 4ppulc2n3,6gnx gw head-on with a 6.0-kg object moving to the left at 2.0 m/s. Which statement is c2,ng 7lc+z3 6 3txkxg p+wlou pjnzc/4orrect?

  A 100-kg football linebacker moving at 2.0 m/s tackles head-on an 80-kg halfbd wsk0u* hty3,ack runndyku3hw,s 0 *ting
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 9t4f 1iex .uzh cs 6xjt5*3kclfollowing statements izx1x*ht5t69.3 kcf ij u4cless true about kinetic energy?

  When is kinetic ener t( (4lheca a8f,,yzjm:sxb8zgy conserved?

  In a game of pool, the white cue ball hits the #5 bax0v.jr8 24cjxnr8-usw; a velm.f /msll and stops, while the #5 ball moves away with the same velocity as the cue ball had originally. The ty. fm0ae ms . jnxvrs;/wr-lujx88v24c pe of collision is

  When a light beach ball rolling with a speed of 6.0 m/s collides with a heavy exvibvv:x: t n:,ercise ball at rest, theti :: v:vbvnx, beach ball's speed after the collision will be, approximately,

  A golf ball traveling 3.0 m/s to the right collides in a u5ixr+zs /,,m r ru5x.fb wgo.head-on collision with a stationary bowling ball in a friction-free environment. If the collision is almost perfectly elastic, the speer5/ ,.+gxowri uru5 zmfs, b.xd of the golf ball immediately after the collision is

  A rubber ball with a speed of 5.0 m/s collides head-on elastiyvc0 vmvc9+a (9q5fam4pl u;rcally with an identical ball at rest. What is the speed of the initially stoppeqc+v0v9(y fv5upmalr m94 ;a cd ball after the collision?

  A very heavy object moving with speed v collides head-on with a very light oi.qslj :8,/pre m-rjrbject at rest. The collision is elastic, and there is no frict j.e8jl ,rirs pmrq:-/ion. The heavy object barely slows down. What is the speed of the light object after the collision?

  A very light object moving with speed v collides head-on with a very heav01yvjd pff70rnoob sf* 9o2f8y object o12*f0v9y0bnrsdp fof fj8o7 at rest, 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 collid8o hqg8r ii7jtp*q*zutee577cek hr. 4 0-llyes head-on with a yellow ball of equal mass moving with a velocity of -2y-qjt*tozp8ru 78 * 5qekh.ieeg7 40r7lcli h.0 m/s. What is the velocity of the yellow ball after the collision?

  A very heavy object moving with exs3dm4v+ ld- velocity v collides head-on with a very light object moving with velocity -v. The collision is elav4+- xdlds3me stic, 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 mqihz )k+5 bk2:ph ef4*e/ uvrgsc2ng-omentum is conserved, then which of the following statements b5erkhinvkzp2u )4qs/2- g+ cef*h:g is true about kinetic energy?

  Two objects collide and stick together. Kine 2o g+ulc5 au9.p5vhomtic energy

  A 3.0-kg object moves to the right at 4.0 m/s. It collides in aw 2b3(zeaxbk3at * yu.g+ do;a perfectly inelastic colx; +byot(b dawuka.3ze3*a2 glision 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. Whis nhza*jzb.* 9ch object experiences the largen*z9a bs *zj.hr magnitude of momentum change?

  In a game of pool, the white cue ball hits the #9 ball and is deflected ati p1ot ,(iwy-h 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. Whicho(aa9 l5tmv *i of the following statements is fals59at *( lmaiove?

  Which of the following is a false statcq95q,)-bg*o wtsyfa ement?

  Tightrope walkers walk with a long flexib 8w-kfi5auq*cle rod in order to

  A plane, flying horizontally, releases a bomb, which exp3dkic p 8p(l0clodes before hitting the ground. Neglecting air resistance, the center cl30p8 ip(ck dof mass of the bomb fragments, just after the explosion

  Two cars collide head-on on a level friction-fre3quwyfm.z4n0 k.b o5ie road. The collision was completely inelastic and both cars quickly came to rest during the collision. zwui43qbmo.y5fn 0. k What is true about the velocity of this system's center of mass?

State Newton's second law for a system 0wswe7y)z)2wq5m1w sgk d)hv of particles.

  What is the momentum of a 2000-kg truck traveokqcvx -o.ltln1+d) (ling at 35 m/s?

  A 1200-kg ferryboat is moving south at 20 m/s. What is ss -hije7 9aic92 1qdf tz/d.athe magnitude of its mom -h9d jfa7cas1. idtz9s2 /eiqentum?

  A ball of mass 0.10 kg is dropped from a height o xqyq6z :ua8;qf 12 m. Its momentum when it strikes the grou ;8y6qqqxauz :nd is

  Two identical 1500-kg cars are movingu+hinh z dv(1; perpendicular to each other. One moves with a speed of 25 m/s due north and the other moves at 15 m/s due east. ;h1z+(ivud nhWhat is the total momentum of the system?

  A handball of mass 0.10 kg, traveling horizontally at 30 m/s, strikes a wall apy ni h+n44n,h//eurl nd reboundn+/4hu 4y/nlh r,n eips at 24 m/s. What is the change in the momentum of the ball?

  A 0.060-kg tennis ball, initially moving at a sc5: y2nfz l(vnpeed of 12 m/s, is struck by a racket causing it to 2cn(nl5yzv:f 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) +1t*es27)m hl3 ckcaba sehb 3fxt(a (excluding the baseball) is 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 t+7flst2bc aek3)tbsc1ex()ma 3* hahhe recoil speed of the pitching machine? (Assume negligible friction.)

  A 70-kg astronaut is space-walking outside the space capsule and is sta1*gvi5,dmt w xtionary when the tether line bre1g5 mw,iv*d xtaks. 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 large objeb z(4+f 6,irx,ank: 8nhwjly uct at rest. The small object bounces strakfah 8rj ziun+ 4 y,6,wx(n:blight 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 frip(- o 6(regt y1zafp wnd7aydd 8p51tbc)zc36end (40-kg mass), who is standing still, with open arms. As you collide, while holding each other, with what speed do you both move off toge( )t8 fez dp1n-wabc (zgy163 rcd pt7y5p6daother?

  A car of mass 1000 kg 9ok4ou :ht4+h,gknshmoves to the 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 aftekhu4 hkngs94+,o h:otr the collision?

  A 1000-kg car traveling at 25 m/s runs into the rear of8 f8ul+b:1mkce5c 4l3y sbhno a stopped car that has a mass of 1500 kg and they stick together. What is the speed of the car4b8ly 8+ b:olekcusmc3 n1f 5hs after the collision?

  A railroad freight car,jjp6)y8l p /( z 7lwti7xo0qbs mass 15,000 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, initiawz/plboxi 6j)p 0ty ql78 (sj7lly at rest and with brakes released. What is the speed of the two cars after coupling?

  A railroad car, of mass 200 kg, rolls /pdsk n/mgis b ;7vc-,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. k/i/ng7cv -;bspmd ,s0 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 ratk ykxfk5-48 mge of 0.80 m/s (with respect to the log). With what speed doesgf8k m4yk-5k x the log move, with respect to the shore?

  A 4.0-N force acts for 3.0 s on b4bgvh6kdkm)-l r*7l an object. The force suddenly increases to 15 N and acts for one more second. What impulse was imparted by th6kb4 hg7l*br)ml-kv dese forces to the object?

  A constant 9.0-N net force acts for 2.0 s on a 6.0-kgrlzii3d3nx5;,f 3dt f object. What is the object's change of veloci3fd3,;lf3t5 z nrx diity?

  A 2000-kg car, traveling to thetr3p1,4unuu(2s dbzb3) qgyi right at 30 m/s, collides with a brick wall and comes to rest in 0.20 s. What is the average foru( udn tbi,3z32 pr q)1ybu4gsce the car exerts on the wall?

  A 2.0-kg softball is pitched to you at 20 m/s. Youxn3v q 7n8ht,:lcjh*z hit the ball 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 8hxclnvnzth7q * 3 ,:jthe magnitude of the average force the bat exerted?

  A 0.10-kg ball is dropped on2+jg;zjb 0/.c/qjub. yaahp uto a table top. The speeds of the ball right before and right aq;.j0jjupha+ z y c//ab.ubg2fter 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, w3 5zmg n xdvwc dz18;.bhw9ul8ith a muzzle velocity of 750 m/s, at the rate of 300 rounds per minute. v.guc8l8dw; xzdm1wb9h n5 z3What is the average force exerted on the machine gun mount?

  A fire hose is turned on the door of a burning building iuo z s ,xq6(d(fr2n5jrn order to knock the door down. This requires a force onfxru5 (dq zo 6(j2rs,f 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 kg1 t .fr.p*cabajd3ewst+*k p 7 per minute. It falls 3.20 m to the ground. Assuming the water doesn't splash up, what average force does it exer jte . *7+a1ap3kbsc.rfd t*pwt on the ground?

  A toy rocket, of mass 0.12m3awws :5l /gihikr. 8 wvya7) kg, achieves a velocity of 40 m/s after 3.0 s, when fired straight up. What average thrust force does the rocketghwa 5 m.ls:/ar ykw)wv83i7 i engine exert?

  Two astronauts, of masses 60 kg and 80 kg, are initial ksn6y(9.jdac ly at rest in outer space. They push each other apart. What is their separation after the 9dc sj(kyna.6 lighter astronaut has moved 12 m?

  A 3.0-kg object moves to the right with a speedcf9 clx;f-0ma of 2.0 m/s. It collides in a perfectly ;c-fafxc0lm 9elastic 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 thefeppn89qbq7te6g8a p (8e 1i o +x direction makes a head-on elastic collision with a 0.15 kg object initially at rest. What is eqp( 61b tp 8ge 8e9q7afn8poithe final velocity of the 0.10-kg object after collision?

  A 10.0-g bullet moving atg*;gyut ui8(z:zf1 1 k *x;h,l6gujqqtyoo1 q 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 half of its original speed. What is the velocity of the block righ xo1q* gu1;68gyq i; zto (,jzu1f:lgtkuqyh*t after the collision?

  A proton, of mass m, at rest, is struck head-on by an alpha-particle (whi 1(rtiw9pxriyv9gz1 1ch 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(y xgrr91i w9tzp vi11 equals the proton's mass.)

  A 50-gram ball moving +10 m/s collides h;c:.q ksk/znrf qk*1b 0(r ymdead-on with a stationary ball of mass 100 g. The collision is elastic. What is the speed of each ball immediately a1*d:myrq0n s(/; rkk. qbck zffter the collision?

A ball of mass 400 g moving toward the east with a speed of.h)x i p,4iklva1ty7x 3.70 m/s collides head-on with a 200 g ball sitting at rest. The collision is perfectly elastiky7.4xvl p,iatxi) 1 hc.
(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-ajdk011rwioi,2*nrmf- ll tx ;xl * 3uon with a 3.0 kg mass at rest. If the collisifw x- rit121o a*3kn,rljxil*dm ;lu0on is perfectly inelastic, what is the speed of the masses after the collision?

  A 2.0-kg mass moving to the east at a speed of 4.0 m/s collides head-on6 :7wkj efz1ewx; tuh+bi+d 6v in a perfectly inelastic collision with a 6;x ziw6:dj+kh wb7t1feu+e v stationary 2.0-kg mass. How much kinetic energy is lost during this collision?

  A car of mass m, traveling with a velocitybjgw :fw2o) *x28qhkr 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 energg2wbhr*:x jf8w2qo) ky is lost in this collision?

A 15-g bullet traveling 213 m/s in a vertical direction burm/)y4sx hgtm7y )ji,cies itself in a 2.4-kg bloix)cy)sg 47y, tmh /jmck of wood 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 collides with a 3000-k+9b+bnsh9hu )i n xnmz-l(t, og car traveling at 60.0 km/h south. The two cars stick toget+h nulnbz-b +9 (t,9sio) hnxmher 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 collides with a 3000-kg car (o125gdgm8uni09rs:rb qq)a 2n dxv itraveling at 60.0 km/h south. The two cars stick together after the collision. (See Fig. 7-1.) What is the direction of motionr xom2g in1gu r29iq)8dv qd5(:s0nab of the cars after collision?

  Two objects move on a levxkbt r;2ip78 wel frictionless surface. Object A moves east with a momentum of 24 kgm/s. Object B moves north with momentum ;bt8i7r 2w kpx10 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 movingthq59/zu c,m ,xeri 1m 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 8.0 m/s; a 4m ,,qcezi umx 5t/hr19.0-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 ta too17-bo t x6d2wv3mass sits at x = + 21.0 m. Where2ot3ov wtt7 xob-ad61 is the center of mass on the x-axis?

  The center of mass of a two-particle system is a /+tyrfk wadrc/hm1.h+ib5 dwp; +au(t the origin. One particle is located at (3.0 m, 0) and has a mass of 2.0 kg. What is the + p(a.a h h/+cwy mwur+/rdd;ikb1t f5location of the second mass of 3.0 kg?

  Three masses are positioned as gpv6i/iwte6h8huc(: yju8w0 follows: 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 mass./it :0hug w(ej6 uv8wh6iy cp8

  Three masses, 1.0 kg, 2.0 kg, and 3.0 kg, are located at (0, 0)lftc; 29 :ryeuzrvi0:a;5ypt6v o .nc, (1.0 m, 1.0 m), and (2.0 m, tlyvvr9 euz6oy.5p :: ;;infca 2rt0c-2.0 m), 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 is positioneavo4 bzgg*4v 1d at (12, 0). What are the coordinates of a 4.0-kg mass which will result in the cen ga*1z4gv 4vboter 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 whole leg inclu9gc)-yho dh 3xding the foot when the leg is stretched straight out. g9ocx h)hy 3d-Assume the person is 1.60 m tall.