What is the SI unit of momkj(.5uaxausm v) k7) bentum?

  When a cannon fires a cannonball, the cannon will recojt86(eclspeeje3 n -4w m/wf0il backward because the

  A freight car moves along a frict f3-cz) ukhbri f9mr3i +y0,uhionless level railroad track at constant speed. The car is open on top. A large loabf r+ 9u33riimh,kfyu)- hz 0cd 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 ic8v.-iyf g(smu e. What happens to the vev.-mui f sgy8(locity of the sled?

  A rubber ball and a lump of putty have equal mass. They are thrown with equal sue5 mmf) s b-s1e7w2xspeed against a wall. The ball mwfxu5 - )es 7m2e1sbsbounces 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 represent itstl l** y;fma*n kinetic energy in terms of these two qun;*** lftyaml antities?

  If you pitch a baseball with twice the kinetic energy you gavfwrh 6*;8;v )3yfpnp:vhjst2tieqn2 e it in the previous pitch, the magnitujyp*n38pr)2h;qnft s w;vfi 2h6 :tvede of its momentum is

State Newton's second law in tf4u3pb y mu) 0qbicv67erms of momentum.

State the law of conservation of momenig7k x/8 yxx++ -pndoetum.

  The area under the curve on a Force versus0cg q3m m 7 1bb17mpopm.6mzz i eyq2n)e(7bwo time (F vs. t) graph represents

  Which of the following is an accurate statement8i dz.vvlk8 f ;8uh(ukj5r8hf ?

  A small car meshes with a large truck ; s2l+l4hf9 vkejtv8yin a head-on collision. Which of the following statements concerning the magnitude of the average collision force is correct? 8lv9ek;ylsfhj4t +2v

  Two equal mass balls (one red and the other blue) are dropped from the samej08- d seq3bst height, and rebost- eb8j3q0 dsund off the floor. The red 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, collides witq;2vfjb4gujd8lfu g3 h4t 58b gtds; )h a stationary bowling ball. Theqglujt5hd;4jfbf8s; d4 8g2 g b3u v)t Ping-Pong ball bounces 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 momeidomud1ug v )hx) x4.o:6;vel ntum

  A 3.0-kg object moves to theitx0. ofp u4r5r.fz*ht-x d i4 right at 4.0 m/s. It collides head-on with a 6.0-kg object moving to the left at 2.0 m/4hu.dr0 t i .i-5rftx4z fxpo*s. Which statement is correct?

  A 100-kg football linebacker moving at 2.0 m/s) 2yh o.wnkp8s+bp- io tackles head-on an 80-kg halfback runnin h inpybw8op2+o)-s.k g
3.1 m/s. Neglecting the effects due to digging in of cleats,

  In an elastic collision, if the momentum is conservv * as-vn.0zowz wqdf4f ;lb+4ed, then which of the following statements is true about kinetic e0 +wqfdz 4. vf*n;vls4b-awzo nergy?

  When is kinetic energy consh:r;ib ynhh( t9o1 m2tnu)t2m erved?

  In a game of pool, thesck. vs9a.(k t:- bysf white cue ball hits the #5 ball and stops, while the #5 ball moves away with the same velocity as the cue ball had orics f(ta ky-sk:.bs.9v ginally. The type of collision is

  When a light beach ball rolling with a speed of 6yd; c/:v o+ rzh( go)cce0ns9e.0 m/s collides with a heavy exercise ball at rest, the beach ball's speed after the collisiychrz; o9sn 0deo/v:)c c g(+eon will be, approximately,

  A golf ball traveling 3.0 m/s to the right collides in a head-on col pj h(*rsq*/ 3jgbc4k ktya1;trl)z3xlision with a stationary bowling ball in a friction-free environment. If the collision is almost perfectly elastic, the speed of the golf bryk lth( s1j*jxz*p)ract g43q;b3/kall immediately after the collision is

  A rubber ball with a speed of 5.0 m/s collidz cdafk ; 6ym bkqgd-6nno1 )856e:cjges head-on elastically with an identical balq:e1; ync-c8 dmkbgdk5aojz6)66fngl at rest. What is the speed of the initially stopped ball after the collision?

  A very heavy object qe-hgow02z)x:py, rt moving with speed 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.t-,x p0zwhr: gy2)e oq What is the speed of the light object after the collision?

  A very light object moving withsz q 16j8 -k8bukqulblt39)vv speed v collides head-on with a very heavy object at rest, in a frictionless environment. The collision is almost perfectly elastic. Th 1lut qkqv3v6k)b8zl8b9-jsu e speed of the heavy object after the collision is

  A red ball with a velocity of +3.0 m/s collides head-on u.t(r 0y yrx)vwith a yellow ball of equal mass moving with a velocity of -2.0 m/s. What is the velocity of the yellow bayy x 0tu(v).rrll after the collision?

  A very heavy object moving with y dt.g2* i+l( tzcts3rvelocity v collides head-on with a very light object moving with velocity -v. The collision is elastic, and there is no friction.lz gt23 tti(.cyrsd+* 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 conserved, theryltc66y(j b )n which of the followin) ry6c6tjly (bg statements is true about kinetic energy?

  Two objects collide and stick togethew2t k, m+xay,v dny)b+r. Kinetic energy

  A 3.0-kg object moves to the right at 4.0 m/s. Itrc1tl-u)e( ps collides in a perfectly inelastic collcue1 -s(rp) ltision 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 collidn p)s/;*yy h 0osxte,des with a large object and sticks. Which object experiences the larger magnitude)xn,p*d/yh; ses 0 tyo of momentum change?

  In a game of pool, the wht*/tr- aur+ 9f2 jcy9 j5m ztuwfb1y7lite cue ball hits the #9 ball 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 unequal masses, M and - yel7:xiexf6 m. Which of the following statements is falseif6yxe:7 -le x?

  Which of the following is a falseo v ,/hrprz0+pz jd wd*2,c6mb statement?

  Tightrope walkers walk with a long flexible rod in ok3t,l(-nk ku trder to

  A plane, flying horizontally, releases a bomb, which explodes before hitt3cwhlo( rqo ww2.r5,f4 x *prfing thefpc *l r4wxr,howf .3o r5wq(2 ground. Neglecting air resistance, the center of mass of the bomb fragments, just after the explosion

  Two cars collide head-on on a level fric8 jnsvk (h 1yny1kp9u.2:se dction-free road. The collision was completely inelastic and both cars quickly came to rest during the c:ysce(k1k8y1pd.2u vnjn9 shollision. What is true about the velocity of this system's center of mass?

State Newton's second law for a systemmg,,bsl1w k4lhcu5w*xn a(-k of particles.

  What is the momentum of a 2000-kg trucklixj d-b .4ii1 traveling at 35 m/s?

  A 1200-kg ferryboat is moving south at 20 m/s. What is the magnitud,,-e xlsf e9g8 ufkyq8e of its momeexly, g8,e8 qf9s- kufntum?

  A ball of mass 0.10 kg is dro tl5rdv/- eoa:pped from a height of 12 m. Its momentum when it stta5-/ rovl:edrikes the ground is

  Two identical 1500-kg car91ykb(aursaq-8r b )s s are moving perpendicular to each other. One moves with a speed of 25 m/s due north and the) sr b(-q89sby1aku ar other moves at 15 m/s due east. What is the total momentum of the system?

  A handball of mass 0.10 kg, traveling horizn(ol6hvg2 2y n0lj)f4f8czanontally at 30 m/s, strikes a wall and rebounds at 24 m/s. What is tn)aoy2vlzf2ln0j4c f 6g h8 (nhe change in the momentum of the ball?

  A 0.060-kg tennis ball, initially moving at a speed of 12 m/s, is struck by aj ,bfrr8 ralw r.:8,rp racket causing it to rebound in the opposite direction at a spe8 ,w jfrarr:r, p8brl.ed of 18 m/s. What is the change in momentum of the ball?

  A 50-kg pitching machine (exjm dw g*9q0q/ )nrpl:rcluding 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 dr :*9pq/jd gqr)lmw0 nirection. What is the recoil speed of the pitching machine? (Assume negligible friction.)

  A 70-kg astronaut is space-walking oumhr)5. w; mzfjtside the space capsule and is stationary when the tether line breaks. As a means of returning to the capsuleh;jz) mm5f. wr 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 objectl n:*dq wft-kga)4c0m at rest. The small object bounces straight back with a momentum of magnitude 4.0 kgm/s. What is the magnitude of the large objectglf )0wtd4:q mc-kn *a's momentum change?

  You (50-kg mass) skate on ice at 4.0 m/s to greet your friend (40-kg mass), whomq+zb- 2ljjx91o/ xq w* ,vjcptz3,ca/sk-sy is standing still, with open arms. As you col xpwy,jzbj*j/v/xtlzs2 - qmk3- 9 coc+a,s1qlide, while holding each other, with what speed do you both move off together?

  A car of mass 1000 kg moves to the right along a level, straight road at zkqj;eo0en 60 a speed of 6.0nqezje0 6; 0ko m/s. It collides directly with a stopped motorcycle of mass 200 kg. What is the total momentum after the collision?

  A 1000-kg car traveltc h1iki06f z(ing at 25 m/s runs into the rear of a stopped car that has a mass of 1500 kg and they stick together. What is the speed of the cars afkt6(1 0i fihczter the collision?

  A railroad freight car, mass 15,000 kg, is allowed to coast alonlvey; a6gv8 xt/(owi2g a level track at a speed of 2.0 m/s. It collides and couples with a 50,000-kg second car, initially awaxl6o;8(vvti gy/ e2t rest and with brakes released. What is the speed of the two cars after coupling?

  A railroad car, of mass 200 kg, rolls with negligibl pb:hj*g7izx+.i+uq lr co2x 5e friction on a horizontal track with a speed of 10 m/s. A 70-kg stunt man drops straight down a distancez j qohb.: +5*x2i +gcxup7lir of 4.0 m, and lands in the car. How fast will the car be moving after this happens?

  A 60-kg person walks oncxay0s m-o ii9olm21 by07t* x a 100-kg log at the rate of 0.80 m/s (with respect to the log). With what speed does the log move, with respect to the sxct 7 sm2il-9b xym*a0 o0yoi1hore?

  A 4.0-N force acts for 3.0 s on an object. The force suddenly increases to 15; igt ac z0wnt96r7/z 5wl/mbb N and azb 0c6lit tr/; wb/5 mnaw9zg7cts for one more second. What impulse was imparted by these forces to the object?

  A constant 9.0-N net force acts for 2.0 s on+wwpx9 1s4mha a 6.0-kg object. What is the objech9+ms14a xpw wt's change of velocity?

  A 2000-kg car, traveling zi;z bvc0n )l+to the right at 30 m/s, collides with a brick wall and comes to rest in 0.20 s. What is the average force n+ivz b)zl0c;the car exerts on the wall?

  A 2.0-kg softball is pitched to you at 20 m/s. You hit gvc043d7*et/ mmsu4(d rdlegi5 g utq-0 bw .ithe ball back along the same path, and at the same speed. If the bat was in con0g*dqgc m 7-dt gi/0(s53 l4b4tuud.wv emrietact 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 righ uaeu8;cglqrhc fs-wo 6x(++(t before and right after hitting the table top are 5.0 m/s and 4.0 m/s, respectively. e8 q6cs;f (w-ru+a+cguo( hxl 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, f+ylblo8p w 1/mires 50.0-gram bullets, with a muzzle velocity of 750 m/s, at the rate of 300 rounds per minute. What is the average bw+mp1/8o l ylforce exerted on the machine gun mount?

  A fire hose is turned on the door of a burning building in order to knock751jrsrgo 7.h f(ffelvds2r ( 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, assumis5( (2jfrdlf1.oehrf7 gr7svng the water doesn't bounce back?

  Water runs out of a horizontal drainp c2baex w4bv9u6m7ed4 tjtew0/ybmn7,ht o/;ipe at the rate of 120 kg per minute. It falls 3.20 m to the ground. Assuming the water doesn't splash up, wn/j6t7bw,hd4tbyw2 o ebutea 79m0;/e vmxc4hat average force does it exert on the ground?

  A toy rocket, of mass 0.12 kg, achieves a velocity of 40 m/s after 3.jcc jvir0: r:+0 s, when fired straight up. What average thrust forcejvc0: +jc ir:r does the rocket engine exert?

  Two astronauts, of masses g4bni(/ a xk fi7f,9qa60 kg and 80 kg, are initially at rest in outer space. They push each other afkb 7ai nq(a4,f9i /gxpart. 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 collides in a perjtlf(fh;, 9 v )3pljrsfectly elastic collision with a 6.0-kg object moving to the left at 1.0 m/s. What ifs,rtlp v j;)fhj93 l(s the total kinetic energy after the collision?

  A 0.10-kg object with a velocity of 0.20 m/s in the +q ppk vja4 dsk +m(h44uq1v7x6:0mtztx direction makes a head-on elastic collision with a 0.15 kg object initially at rest. What is the final velocity of the 0.10-kg object after colli6ph0ta :4ku74qdms(+vz vkxpjm q41tsion?

  A 10.0-g bullet movindklukq8 cn ue 1+c(+1jg at 300 m/s is fired into a 1.00-kg block at rest. The bullet emerges (the bullet does not getdj+c(en1 ql+ uuk18kc 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 head-on by an alpha-parov ,f8em,4 vp jp(egv0ticle (which consists of 2 protons and 2 neutrons) moving at speed v. If the collision is completely elastic, what speeg j ev,mop4vf ve0(p8,d will the alpha-particle have after the collision? (Assume the neutron's mass equals the proton's mass.)

  A 50-gram ball moving +10 m/s collides head-on with a station l koob0:6ro2 pp,q/vpary ball of mass 100 g. The co:rkp6ooq bv, lp2 /0opllision is elastic. What is the speed of each ball immediately after the collision?

A ball of mass 400 g moving toward the east w ,h.ux+ xom37 uv*xz-mfc ai)bith a speed of 3.70 m/s collides head-on with a 200 g ball sitting at rest. +i 7cu.- bfz3auvmm),xxo* hx 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 of 5.0 m/s.t1 sx48w 4-e, m- b-p61 gps.yngyn,ukljgnpi It collides head-on with a 3.0 kg mass at rest. If the co pwni p -1.x6 n j8tyeb4,p,ys-m1 s-4glggkunllision is perfectly inelastic, what is the speed of the masses after the collision?

  A 2.0-kg mass moving to the east at 6t71lw3y),2zkj eiu fie w.rca 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 duringy jf,rewui)t l6.c3i wk 27ez1 this collision?

  A car of mass m, traveling wit ktavck76upkmrira jq5zx8,+-7-0 e lh a velocity 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 energy is lost in this collisiz kr78k7 a,jemkp-0aurq6+-citvx 5lon?

A 15-g bullet traveling 213 m/s in a ver53: il8iiiji;z7*/ tezkm rlq tical direction buries itself in a 2.4-kg block of wood a rest z;t/i ik8 *j7 q lrel5:zi3miidirectly 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 collidfi 6nzqhys1*( es with a 3000-kg car traveling at 60.0 km/h south. The two cars stick together after the collision. (See Fig. 7s y1iq(6n*fz h-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 traveo2lre: q5ovon-w wz4p 7 v4xd4ling at 60.0 km/h south. The two cars stick together after the collision. (See Fig. 7-1.) What is the direction of motion of trwn7pq2v4vw4lx : 5deo oz-4ohe cars after collision?

  Two objects move on a level frictioin3/tpdf )2qa *q -y2k8efhghnless surface. Object A moves east with a momentum of 24 kgm/s. Object B meh2) 2dpqq3gf h-*y8ni a tfk/oves 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 mofa )-4kk 5zqoo(tb di(t;6q goving toward the North with a velocity of 4.0 m/s. It explodes into three fragments: a 5.0-kg fragmenbd;agq k (ot)o6( -otik4fqz 5t 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 x u0hj +rp1a8 me= + 21.0 m. Where is the center of mp ah1+r8eu0j mass on the x-axis?

  The center of mass of a two-particle systeky;sg 5raiu0/n4sb8 ,e qv 8dhm is at the origin. One particle is located at (3.0 m, 0) and has a mass of 2.0 kg. What is asnbi;k,50s hyq 8/rdgve48u the location of the second mass of 3.0 kg?

  Three masses are positioned as fof y:x6k zgfli5, j((ai/(mjfollows: 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(lf(i:ajm6xo(fji ,g zf5/yk the center of mass.

  Three masses, 1.0 kg, 2.0 j8 jsf;f5zg9tz*:0ct2inv3v: z +cmt7zay hykg, and 3.0 kg, are located at (0, 0), (1.0 m, 1.0 m), and ycg:m;2 3 +98 f: zjtj*zzt f5nivt hzv7cya0s(2.0 m, -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 11a vkk sy3,:ce.0-kg mass is positioned at (12, 0). What are sa ,1v:kyk3ecthe 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 thek km 2qmf2bgw+3x ld:ds3jm7 7 position of the CM of a whole leg including the foot when the leg is strm22qx7ml3kdd gsmf bj7 :w k3+etched straight out. Assume the person is 1.60 m tall.