What is the SI unit of momen8oe ;pn5l lxw*tcp 8)atum?

  When a cannon fires a cannadmi lhi 7)u26onball, the cannon will recoil backward because the

  A freight car moves along a frictionless level railroad trad)o9 u d8;9kt fblh69zyx)gbick at constant speed. The car is open on top. A large load of coal is suddenly dumped into the car. What happens to the v);tu9zd fl6h9 b gbx ioky)d98elocity of the car?

  A child falls sideways off a sled while sledding on frictionless ice. What happugdm+ / hhb7e8 gm9m*pens to the*gmd +phm7e9u/mg 8hb velocity of the sled?

  A rubber ball and a lump of putty have equal mass. Thgeu349 ;rxb mkey 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 ux g394;ke mrbmomentum change?

  A sailboat of mass m is moving with a momentum p. How wo(u82k9pe swsu uld you represent its kinetic en8ss(u p 29uewkergy in terms of these two quantities?

  If you pitch a baseball with twice thm771i h e iywua o)wyl;yw.9-ze kinetic energy you gave it in the previous pitch9wiua.lw7e ;)y i hoy-my 1zw7, the magnitude of its momentum is

State Newton's second law dtj2k;cwup(, in terms of momentum.

State the law of conservatiokipqbhs;yz0-bjgr 9l c5,s 8 . el68ein of momentum.

  The area under the curve on a Force versus tim8wlgcxc a7*f1i o:v f,e (F vs. t) graph represents

  Which of the following is an accurh3py.r iqxk9y.aco:0.yjt7 q ate statement?

  A small car meshes with a large truck in a he 42dt4c. )ui)rvjvlwb ad-on collision. Which of the following statement vw.)j44iuv)rd bc2lts concerning the magnitude of the average collision force is correct?

  Two equal mass balls (one red and the other bluey wx 6nllp83ix8o9 a:v) 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 impulse duwx8:9 lynovxi p836alring its collision with the floor?

  A Ping-Pong ball moving east at a speed of 4 m/s, collides with a statu ;/kys-.e 1tepp4iwsxbr o6:ionary bowling ball. The Ping-Pong ball bounces back to the west, and the bowling ball moves very slowly to the ea:6t ; eop/1b.4ukp-yxs iew srst. Which object experiences the greater magnitude impulse during the collision?

  Two objects collide and bounce off each other. L1n1y)vy2cf ge/gdgly i:5sb1h5 lz. u inear momentum

  A 3.0-kg object moves to the right at 4.,kksg2k9o4 1r2hdw xg0 m/s. It collides head-on with a 6.0-kg object moving to the left at 2.0 m/s2 wgko9krds1x4g2 k,h . Which statement is correct?

  A 100-kg football linebacker moviey-2ygtm50p1lo pjg.((rh6)q hxo v ing at 2.0 m/s tackles head-on an 80-kg halfback x)0ym(.h5gpov h 6toq 1 pelr 2j(igy-running
3.1 m/s. Neglecting the effects due to digging in of cleats,

  In an elastic collisim lhw v(e1q;ff41 re(pon, if the momentum is conserved, then which of the following statemen (l ehe4w( 1ffm;pr1qvts is true about kinetic energy?

  When is kinetic energy consedl0;v las0,v crved?

  In a game of pool, the white cue ball hits the h32i30drss1imvs j(ox+k7im7dw;ji #5 ball and stops, while the #5 b7k;vj3iii2o1rds +(m 7 xh d w0imsjs3all moves away with the same velocity as the cue ball had originally. The type of collision is

  When a light beach ball rolling with a speed ofonj*:s80zihf q f9 e*c 6.0 m/s collides with a heavy exercise ball at rest, the beach ball's speed after the collision will be, ap0qz:*o 9e f8sif*cjhnproximately,

  A golf ball traveling 3.0 m/s to the right collides in a head-on collisionu/6j*yj (ofrnf7k 6wn with a statiouwn r/7 jjfn6o(*yf6knary bowling 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 elastically wgat)0 b4pk2s7qy mgr (lp(zl0ith an identical ball at rest. What is the speedl24rb y p()t0q(gmsp l0z7gka of the initially stopped ball after the collision?

  A very heavy object moving with speed v collides head-on with a very light o6;eg 4prcj2n(nkf n7 cbject at rest. The collision is e6c2frngp7e4;cjk nn( lastic, and there is no friction. 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 coll;iaj)u eio )gxl+9ld*;*z op2:abl)v iiy j7zides head-on with a very heavy object at rest, in a frictionless z)ibux*o;i2e; aiivg zl yl+9)7j)pld: o *jaenvironment. 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 colliin75 g3f xfmd5des head-on with a yellow ball of equal mass moving with a velocity of -2.0 m/s. What is the velocity of the yem 5x57n3fg ifdllow ball after the collision?

  A very heavy object moving with velocity v collides head-on with a verb l2a5(jv9q pn khrgxw8x 9l*t eo6zq)ozj491y light obrpbl2tzxxoka)v 9j q(h l819zj oge*n945 6qwject 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 after the collision?

  In an inelastic collision, if the momentum is conses:-9r4xg2 cp7co +crqa 5j e /.hu0eej6nekxarved, then which of the following statements is true about kinetic energy xgc/9reee0 c:nxesa 6 4jo.-aqhp j7k+2u5rc?

  Two objects collide a-btvop ,28czc nd stick together. Kinetic energy

  A 3.0-kg object moves to the right at 4.0 m/s. It collides in a perfeci6c/ gk3qf14z -gfi lr2y og9ctly inelastic collision figf/3 2 oc9kz-4gil ycgqr16with 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 anda-6jr c-whci : sticks. Which object experiences ther 6h-cwi: cja- larger magnitude of momentum change?

  In a game of pool, the white cue ball hits the #9 ba e5: 9rysotzn+ll 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 unequalr-wy( ov/ kvq:h2fv)b masses, M and m. Which of the following statements is false?y(-:qvb ) krvf2 /vhow

  Which of the following is a falslr 8w;0zbws+:hza l1ge statement?

  Tightrope walkers walk with a lonm)qm 4ccf 3he9g flexible rod in order to

  A plane, flying horizontally, releases a bomb, which en-jp(v8qay56w u2x l xxplodes before hitting the ground. Neglecting air resa p582x(wj uvylx6-qn istance, the center of mass of the bomb fragments, just after the explosion

  Two cars collide head-on on a level friction-free road. The coll(s(c-i ,ts6 wqfwd+we ision was completely inelastic and both cars quickly came to rest during the collision. What is true about the velocity of this system's center of wwws (c6 eif,-t (+qdsmass?

State Newton's second law for a system of p/(zyx98ilp zs fc3cp/articles.

  What is the momentum of a 2000-kfg fs gw;yb )m/n47y5. j)htpeg truck traveling at 35 m/s?

  A 1200-kg ferryboat is moving south at 20 m/s. What is the)2,e;a-ojuhma vo: fpph,r 3w magnitude of its momen,,aahr uj 2v o3h);p:ow-f epmtum?

  A ball of mass 0.10 kg is dropped fro0l;6u)g+u y8afn7w pcj7xk uk m a height of 12 m. Its momentum when it spuc;k 876gfak 70+ u)lwxy njutrikes the ground is

  Two identical 1500-kg cars are moving perp;.huu+d vtz s7endicular to each other. One moves with a speed of 25 m/s due nort;.dsz u+7 hvuth and 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 ab)2v q,1b7ahm4 .o x h ymv+fgmk8nhq; wall and rebqv hxm o.m 74b8qnh2,bv 1fayk h;+gm)ounds at 24 m/s. What is the change in the momentum of the ball?

  A 0.060-kg tennis ball, initially moving at a speed of 12 m/s, is struckw c 92k,n3he1+jpw c.re2la : c7wopsc by a racket causing it to rebound in the opposite direction + o.:27lhwj92wc 3 1ccp senakrpe,wcat a speed of 18 m/s. What is the change in momentum of the ball?

  A 50-kg pitching machine (excluding tbkip o:(n/ un1he 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 the recoil speed of the pitching machine? (Assume negligibni u:onb/(1p kle friction.)

  A 70-kg astronaut is space-walking ogg 8uf pe/uwx4ge6sunldc:(2) we 7x7 utside the space 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 astronaseg7u6 7) dexge/ wpcfunx8(: ug24 lwut move toward the capsule?

  A small object with momentum 5.0 kgm/s approaches head-on a largeg7jvjaw9ahdv z2 *c; .i;mmq8 object at rest. The small object bounces straight back with a momentum of magnitude 4.0 kgm/s. What is the magnitude of the largh2d;gc7qai.w j;mja v8z9 m*v e object's momentum change?

  You (50-kg mass) skate on ice at 4.0 m/s to greet your friend m / -9t4md:plg vh7qoa(40-kg mass), who is standing still, with open arms. As you collide, while holding ehdmt:74 q9 vpoalm-/g ach other, with what speed do you both move off together?

  A car of mass 1000 kg moves to the right along a level, straight b 2e d4,bggm0tngha7(road at a speed of 6.0 m/s. It collides directly with a stopped motorcycle of mass 200 kg. Wghgg bte(ban,m4 20d7hat is the total momentum after the collision?

  A 1000-kg car traveling at 25 m/s runs into the rjyke4gr*5z3bt v w+.g . x.bq7fqa3oh ear of a stopped car that has a mass of 1500 kg and they stick together. What is the speed of the cars after the cg4 vg5y.rtk 7+eqq*.ozjb3 wfxb.a3h ollision?

  A railroad freight car, mass 15,000 kg, is allowed to coast alojd -*egz;8 cveng a level track at a speed of 2.0 m/s. It collidz d;*g8ecv e-jes 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 coupling?

  A railroad car, of mass 200 kg, rolls with negligible friction on a hk9f9g9y)oom*t8 dpi; jq oh a3orizontal track with a speed of 10 m/s. A 70-kg stunt man drops straightd fj; hqty8 aooi*m3)9gk9po9 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-kg6cy5p b m8rt6n log at the rate of 0.80 m/s (with respect to the log). With what speed does the log move,6rmb5 y pnt68c with respect to the shore?

  A 4.0-N force acts for 3.0 s on an object. The o;y)7 xqsr9tj)tlfvq:.gpcnxq d/4 3force suddenly increases to 15 N and acts for one more second. Wr;q 93oq n/)f)ly.7gjq st4 xdxc :pvthat impulse was imparted by these forces to the object?

  A constant 9.0-N net force acts for 2.0 s on a 6.w dks1 wq+-yu:0-kg object. What is the object's change of velos+wwq -y: 1udkcity?

  A 2000-kg car, traveling to the right at 30 m/4wa cuo+cb/e /s, collides with a brick wall and comes to rest in /c4w +/beuca o0.20 s. What is the average force the car exerts on the wall?

  A 2.0-kg softball is pitched to you at 20 m/s. Yofqdq+lbj(f4p nly ..+u 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 the magnitude of the averagp. +4ln.jylf+ fbqqd( e force the bat exerted?

  A 0.10-kg ball is dropped onto a table top. The speeds of thekvrsy g0k6z.( sk ,ae/ 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 magzgakss. k(v0 ,re/ky 6nitude 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, witjp h(yvz 9i2( 1v)yrkzh a muzzle velocity of 750 m/s, at the rate orh19)vp2(( ykz vzyj if 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 bs-*7 bpcl/seaurning building in order to knock the door down. This requirepbss/c-l*ea7 s 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 bounce back?

  Water runs out of a horizontal drainpiph ,u/ znh8ogu uf4+o-o*74vve +omai ge at the rate of 120 kg per minute. It falls o g /+u +oiu4hg8veounav 4-7fh o,m*z3.20 m to the ground. Assuming the water doesn't splash up, what average force does it exert on the ground?

  A toy rocket, of mass 0.12 kg, achieves4;vgy n2 ggms8nk,d.4w m-mhf a velocity of 40 m/s after 3.0 s, when fired straight up. What agh4.4 mg,82k-s n fmwv;ydmgnverage thrust force does the rocket engine exert?

  Two astronauts, of masses 60 kg a/3l4bpyp nv 5giug1*gw5n e)bl bz30 gnd 80 kg, are initially at rest in outer space. They push each othv/b13u*by n34z)ngie g0 5plw gp5gbl er 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 2.0 m/s. It collidescofu::cul s7fe)3 f4n+ qwk3 s in a perfectly elastic collision with a 6.0-kg object moving to the left at 1.0 m/s. What is the total kinetic energy :c cf:fuos+ s7e )kn 3u3l4qwfafter the collision?

  A 0.10-kg object with a velocity of 0s:gk(:id9v0faruk 2 y.20 m/s in the +x direction makes a head-on elastic collision with a 0.15 ky2srg 0k:u:vd 9 fi(akg 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 ffk.xt jpjs mfin 5ynh 4q3kag-1 )*7 (.u5xrvmired into a 1.00-kg block at rest. The bullet emxuk yp5).(m7n nqs4jvt*k.g 13fij5af- mrx herges (the bullet does not 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 c )xf4ubf i,a5head-on by an alpha-particle (which consists of 2 protons and 2 neutrons) moving at speed v. If the collision is completely elastxf fib,a45 )cuic, what speed will the alpha-particle have after the collision? (Assume the neutron's mass equals the proton's mass.)

  A 50-gram ball moving +10ezlv8 v6 uu05eo38x-zs wa1hq m/s collides head-on with a stationary ball of mass 100 g. The collision is elastic. What is the speed of each ball immediatelysxu838uh w-zo6a015elev qzv after the collision?

A ball of mass 400 g moving toward the east with a speed o i 2q*j,g:l. oubi+ huf(go)(j6 .9fehlnlbpgf 3.70 m/s collides head-on with a 200 gjbf.l (pioj)+h*9g26g :uholublqf( ,.n i ge 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,h;a3 9l8hc bgd rc(tw a speed of 5.0 m/s. It collides head-on with a 3.0 kg mass at rda(l ,h t;r 8cbc9g3hwest. 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 a speed of 4.0 m/s collx i4ehx.8)vd m*iu5q/hc 2cawides head-on in a perfectly inelastic collision with a stationary 2.0-kg mass. How much kinetic energy is lost during thicxq.aicev48w)hu5h d2m /x* is collision?

  A car of mass m, traveling bh ,1:d gbkg hg u2.7 (ollk/nuqbks;+with a velocity v, strikes a parked station wagon, who's mass is 2m. The bumpers llhdgb(n7 g+ug1;shou:q.,/kb kklb 2 ock together 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 di zf+m xk7y3vx*+uu)3o(j kiu crection buries itself in a 2.4-kg block of wood a rest direct*kk 3xiu u7xo+ (c y)mfuj3z+vly 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 travelij1m*b0 k:nkr4pus*q i ng at 90.0 km/h east collides with a 3000-kg car traveling at 60.0 km/h*mjp4:0nbq*ksikr u1 south. 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 collides with a 3000-kg car travelinrwsg- ; t wvc4(hw+(lqg at 60.0 km/h south. The two cars stick together after the collisw;wr qh-+ tgs((4cl vwion. (See Fig. 7-1.) What is the direction of motion of the cars after collision?

  Two objects move on a level frictionless surface. Object A moves east with a ms4 pfgzay7iy/ c5 5ic-omentum of -/55sa 4izy 7pgccyfi 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 momentum after the collision?

  A small bomb, of mass 10 kg, is moving towa *sl;xpn93 cpq)px+ js:3b cuard the North with a velocity of 4.0 m/s. It explodes into three fr+ uq x* ja:p)c39lps b3cxnp;sagments: 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.)

  A 4.00-kg mass sits at the origin, and a 10.0-kg mass sits at nzo; d1l 6o73ofbn*agx = + 21.0 m. Where is the cen7gn lbf6 ;aoo3n odz*1ter of mass on the x-axis?

  The center of mass of a two-particle systn3cma m*9 vumyd wfa107mgs8/em 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 second mn1730my9mfus/8wvga *a mm d cass of 3.0 kg?

  Three masses are positioned as follows: 2.+anim+6k.4zop2 jvc e0 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 z 6 o.24mn ecv+kj+iapof mass.

  Three masses, 1.0 kg, 2.0 kg, and 3.0 kg, are located at (0, 0), (1.0 m, 1.0 /o wnjldzuq 2+c .1go:m), and (2.0 m, -2.0 m), respectively. What is the location of the cenon/uc:2 + lwoqdzg.j1ter of mass of the system?

  A 3.0-kg mass is positioned at (0, 8.0), an*5vid t5 p7gobe, rsz*d a 1.0-kg mass is positioned at (12, 0). What are the coordinates of a 4.0-kg mass which will result in the center of mod*5 s* zt,5igper v7bass 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 includijzd-,xq; mfmi:yu *ga j++r-ypu 9ah/ng the foot when the l;*mm p:qhuyaz-++- /9a,rj ijxy dgfu eg is stretched straight out. Assume the person is 1.60 m tall.