What is the SI unit of momenidc p5 z)4j (w0ayr9fatum?

  When a cannon fires a cannonball, the cannon will recoil backward because thyln.f7r(f 4hae

  A freight car moves along a fri 2;)awfefqw6dh4z pw /ctionless level railroad track at constant speed. The car is open on top. A large load of coal is suddenly dumped into theh2wqe4/)6 ;wf zd pafw car. What happens to the velocity of the car?

  A child falls sideways off a sled whilhm+ kyu8wi4p- e sledding on frictionless ice. What happens to - 8+4mu yihkwpthe velocity of the sled?

  A rubber ball and a lump of putty have equal mass. The 7 8,b1zbm;ond8ulnrx-b k0gry 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 objecbmb ux10-gz,lr ; 7n o8dkn8rbts experiences the greater momentum change?

  A sailboat of mass m irb231e3; qvhi6/ 6 djff :hxz2ut; ekrx oc9hqs moving with a momentum p. How would you represent its kinetic energy in terms of these two quarveo;/ hk;2:qf2h9 ei 13c6rq3 fudxbht6zjxntities?

  If you pitch a baseball with twice the kiny4 -a-.q ftzwretic energy you gave it in the previous pitch, the magnit-fq-4 tyazr. wude of its momentum is

State Newton's second law iu ,4/ hmxd4ub qojgiu4 go-o ,u3iu0w/n terms of momentum.

State the law of conservation of m;p 5c2 (0iuxsd6a kilgomentum.

  The area under the curve on a Force versus t+2+4dkmpk 7k +uygigxvdnl* 5 ime (F vs. t) graph represents

  Which of the following is an aca.7o n.049uq1bpf , d3 xnfz+i mjytyzcurate statement?

  A small car meshes with a large truck in a head-on collision. y:c ji0g)hhhc1 z,9 fz Which of the followin h1:i0c,y9gh)zc fzh jg statements concerning the magnitude of the average collision force is correct?

  Two equal mass balls (one red and the other blue) are dropped from the say, 4eq8fdj fi3me height, and rebound off thei, qf3f dy84ej 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 yn3kg d6g8lhc3jqg jebn9wuh 9;y873 at a speed of 4 m/s, collides with a stationary bowling ball. The Ping-Pong ball bounc u38dlwqgh3n 7y 9jg8jhe63k g9cy ;nbes 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. Lipi5982vs: qdhd; *dm glw4gf p)o wy2nnear momentum

  A 3.0-kg object moves to the right at 4.0 m/s. It collides h3psuzdc3qlu8a,v 2-y ead-on with a 6.0-kg object mov c q l3suyv2u-,dazp83ing to the left at 2.0 m/s. Which statement is correct?

  A 100-kg football linebacker moving at 2.0 m/s tackles head-on an 80-kg halfb0*e (yuzp;yfjack r0; fpez* jyu(yunning
3.1 m/s. Neglecting the effects due to digging in of cleats,

  In an elastic collision, if the momentuyrb.7mfh *5qf l 2o 7ud4 -acdmlr;g9bm is conserved, then which of the following statements is true about kinetic energ2;g*-h foy77.lac4qrf dmub l9dr5b my?

  When is kinetic energy cd)2zwsd/f(q p onserved?

  In a game of pool, the white cue ball:lmkt; lhe+ 0ea(*u8 hmv(8vwvhx2 zl hits the #5 ball and stops, while the #5 ball moves away with the same velocity as the cue ball had originally. The type of collisioh xal (h2u v8e +v8(m:zlmvh *klt;0wen is

  When a light beach ball rolling with a speed of 6.0 m/s collides with a y7j3vv7ji6 5hn drcq(heavy exercise ball at rest, jj3q76hvr(y dv5in 7 cthe beach ball's speed after the collision will be, approximately,

  A golf ball traveling 3.0 m/s to the righnxeq pl;z0d a:z+c.;u t 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 b:dqlu+azn;0 cep;xz.all immediately after the collision is

  A rubber ball with a speed of 1b -z*3et+z ed3z6+e 4twoie l. eyzoc5.0 m/s collides head-on elastically with an identical ball at rest. What is the speeelt3 +ozzbd 6owe+e1.zi*- c3t4ez yed of the initially stopped ball after the collision?

  A very heavy object moving with speed v collides head-on with a verkbdg6:7 7e /npc6fnc e;tubg 7y 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 after the coll e ;cng6pg t/ndek:bbu f7c776ision?

  A very light object moving with speed v collides :,3gacfyz0p ze 2 (ci9kv8dxg5rt,yjhead-on with a very heavy object at rest, in a frictionless environment. The collision is almost perfectly elastic. The speed or: czagyck8,02,f35 y v eig(9djpxt zf the heavy object after the collision is

  A red ball with a vegbjyf u:*u7 f6locity of +3.0 m/s collides head-on with a yellow ball of equal mass moving withgjf yufbu*7:6 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 with a v.t +fj )7acmty8 m)gqqery light object moving with velocity -v. The collision is elastic, and there is no friction. The heavy object barely slows down. What is the sqj ) a)c78 +tyqmt.fgmpeed of the light object after the collision?

  In an inelastic collision, if the momentum is conserved, d7 ck+09 a uudmf fk90e.w1yxathen which of the following statements is tru e dka019u+d fcu97kfyx0.a wme about kinetic energy?

  Two objects collide and stick together. Kinetic eneremq7 z6 px;ie: -ses8igy

  A 3.0-kg object moves to the right at 4.0 m/s. It collided7xi,w hph 2b0m/lbyn*x8od;d r,1 ya+la: pus in a perfectly inelas1abhpxw+dhlb:,/onrm7;8pi d *02u, dx yayltic 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. Whif2pihgg6rrne8 cn5: ;(wu9ww 6,ccue ch object experiences the larger magni6 g5e(w6r gw nefwhc;8 urn2 pi9c:,cutude of momentum change?

  In a game of pool, the white cue ball hits the #9 ball and is de6h ua; ba;j-ifflected 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 m)gclwc* -3 bpicaq t;8asses, M and m. Which of the following statements is falseap)cl8ic t;w c3qb*g -?

  Which of the following ;;,wj-rx 7m6 sif0h;cpj glbs3o7f k jis a false statement?

  Tightrope walkers walk with a long fwzk *r4c pv-e9lexible rod in order to

  A plane, flying horizontally, releases a bomb, which explodes 6nct5uxqt+z)7jf1z4bn9 j w 2z(t crvbefore hitting the ground. Neglect zf+ 1(tn76zc cwt x)r5 jbnztj294uvqing air resistance, the center of mass of the bomb fragments, just after the explosion

  Two cars collide head-on on a level friction-free road. The collision was co -lw25au73 tjw fty:q v8cl3zron x3(umpletely inelastic and both cars quickly c xtnq37coy-utz3j 38lawf :vw2l u( 5rame to rest during the collision. What is true about the velocity of this system's center of mass?

State Newton's second law for a sys.*.cli vfdhq wfc*g4+r hsk6 1tem of particles.

  What is the momentum of a 2000-kg u 7h:/mhqyku +j cob,/truck traveling at 35 m/s?

  A 1200-kg ferryboat is moving south at 4+3zb jn2n/vsqyzq 8a20 m/s. What is the magnitude of its momsqa4nzvyn /z+q8j2b 3entum?

  A ball of mass 0.10 kg is droppedko; u 4mv dr+7ukho10m h66jna from a height of 12 m. Its momentum when it strikes the gr+kuoa7mu;h60 kh mv jd641onround is

  Two identical 1500-kg cars are moving perpendicular to each other8 qihf r*.lg9t. One moves with a speed of 25 m/s due north and the other moves at 15 m/s due east. What is the total momel.*i89 q fthgrntum of the system?

  A handball of mass 0.10 khj6 a5zhah2dhzsqtaq*am )(o0* ;v7kg, traveling horizontally at 30 m/s, strikes a wall and rta2s zmh*vqa hzohah0kq;)jd5 *(76a ebounds 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 s ,lq+ ;z9syxbztruck by a racket causing it to rebound in the opposite direction at a speed of 18 m/s. What is the change in momentum lqx9,;z+yz sbof the ball?

  A 50-kg pitching machine (excluding the baseball9ri+ccd **rozbu2.3puy)w1g . qodm y) 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. What3yczu b.1+ciq9 ud gwypor d2or*)m *. is the recoil speed of the pitching machine? (Assume negligible friction.)

  A 70-kg astronaut is space-walking outside the space capsule andj:cb.(yjm 5wm 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 mw bj.mc y(5j: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 lg,yxxj9j zx sxt132,uarge object at rest. The small object bounces straight back with a momeg uxt,23, zy91xj sxjxntum 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 friend (40-kg jw2 1i3i fhq(v)ysm 2b+fn5nc 9hhoo- mass), who is standing still, with open arms. As you collide, wh2fi qn5o21yb-j9fi) m vw3+ c honh(shile holding each other, with what speed do you both move off together?

  A car of mass 1000 kg mwq4uv7wfz 8 3ooves to the right along a level, straight road at a speed of 6.0 m/s. It collides directly with a 3wo w 8qvu7fz4stopped motorcycle 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 yb(+ cpbfa+awtot4,1d 9ql *jcar that has a mass of 1500 kg and they stick together. What i,w+4 1jo f+lyapcb*a d tb9q(ts the speed of the cars after the collision?

  A railroad freight car, mass 15,000 kg, is allowed to coast along a le l:x ec8 nm,hbjxj91*.m1j pgxvel track at a speed of 2.0 m/s. It collides and couples with a 50,000-kg second car, inh8mj:j1*ebxx,xn 1pc 9g. j mlitially 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 horizontal tio5r3tr8t:unu(a +.ud b1qaf r3r1( + ndqab.tfruutaio 85:uack 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 the car be moving after this happens?

  A 60-kg person walks on a 100-kg log at the rate o.y*fi7 k+aiy l. ck9rkf 0.80 m/s (with respect to the log). With what speed does 9klkfi c +r y*ay.7ik.the log move, with respect to the shore?

  A 4.0-N force acts for s cqhp9iqo5 2*6e(gynxor e; j:vq4 v.3.0 s on an object. The force suddenly increases to 15 N and acts for one more second. What impuls2roexo 96n5*qv ;v:g(jqy.hip4 e scqe was imparted by these forces to the object?

  A constant 9.0-N net force acts for 2.0mxk 5z rkkog)1occ(1- s on a 6.0-kg object. What is the object's kk1rgx(z kcc5)1oom - change of velocity?

  A 2000-kg car, traveling to the right ate m(d) 4;,htnutdi)ldqjb+z* qys 6,h 30 m/s, collides with a brick wall and comes to rest in 0.20 s. What is the average fornymq4q uli dd)*hjhze;,tb ,6()ts +dce the car exerts on the wall?

  A 2.0-kg softball is pitched to youc3x9j; l3, fseys-0 rw9kmcff at 20 m/s. You hit the ball back along the same path, and at the same speed. If the bat was in contact with txf,y ; lccek j9m3-s3f9rwsf0he ball for 0.10 s, what is the magnitude of the average force the bat exerted?

  A 0.10-kg ball is dropped ov9p r*z*ykt p: p 9ui2zzco)ouo,x49fnto 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 mxt29ou,uipzo k* po99yv *c r:)pz4f z/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 b.e6p 8pxil*m;lz aa s+gehs7* ullets, with a muzzle velocity of 750 ea *mxgs8 i+ .se*6hazl7ppl;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 i2vk + k.;qddvr;10 6l crrfhgbuilding 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 theqh;;6 d.+01 kvvrdrkfi rglc2 stream needed, assuming the water doesn't bounce back?

  Water runs out of a horizontal drainpipe avjg oh4mq6,/mrc 1p8:0gg grqd 6 r+smt the rate of 120 kg per minute. It falls 3.20 m to the ground. Assuming the water doesn't splash up, what average force does it exert on the /d6jr vmg+p:gm6qrg ,8qscgm41roh0 ground?

  A toy rocket, of mass 0.12 kg,1x7nq+kg0u gk *g-tg z achieves a velocity of 40 m/s after 3.0 s, when fired straight up. What avegku zqt 7g-ng0kg+1x* rage thrust force does the rocket engine exert?

  Two astronauts, of masses 60 kg and 80 kgr :kqvy+f1 x 2,fdnw*v, are initially at rest in outer space. They push each other apart. What is their separation after the lighter astronaut has moved :fyw1nv x* +kfrq2,vd12 m?

  A 3.0-kg object moves to the right with a8 clyp:5amt j01fc 64qnd2dho speed of 2.0 m/s. It collides in a perfectly elastic collision with a 6.0-kg o0a1p82 m nolcd4fhq5d6t cyj:bject 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-9 j+b ejpj1zmu;0cp8lon elastic collision with a 0.15 kg object in9 1m+jl ;pzpbc 8u0ejjitially 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 firedlckl1xqx cuwm6e82qfe/h 399j9l q2m into a 1.00-kg block at rest. The bullet emerges (the bullet does not get embedded in the block) with hal1ux m elc2h 6f3c92qwle/9xkmqj q 98lf of its original speed. What is the velocity of the block right after the collision?

  A proton, of mass m, at rest, is- s8;2bk5 kn g-q(i,qnyz-ldcj sw.lx struck head-on by an alpha-particle (which consists of 2 protons and 2 neutrons) moving at speed v. If the collision is c.l n w xqqj-ylsk-czbs(8d2i n-g, ;k5ompletely elastic, what speed will the alpha-particle have after the collision? (Assume the neutron's mass equals the proton's mass.)

  A 50-gram ball moving6obzh0a e1l0z ,) bjib ;yyzn-yr h(w* +10 m/s collides head-on with a stationary ball of mass 100 g. The collision is e yie zwhb l0yryno6hzzab)0 b;*j-(1 ,lastic. What is the speed of each ball immediately after the collision?

A ball of mass 400 g movinoxw7h63un3 r 6 p86)qspdz (4aec uehdg toward the east with a speed of 3.70 m/s collides head-oazq)6eshh6c x6r 43(pndwu 83 odpue7n with a 200 g 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 a speed of 5.0 m/s. It co+ oy0llkvrec5 b7y w39llides head-on with a 3.0 kg mass ly0y97+ovr lwk3 ce 5bat rest. 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 collidesbc*p2m6s*4coi os,xn head-on in a perfectly inelastic collision with a stationary 2.0-*c sc*o,xnb26mip4 o skg mass. How much kinetic energy is lost during this collision?

  A car of mass m, traveling with a velocity v, strikes a -,bkq; np)w iyoou+x9parked station wagon, who's mass is x,);qbo iuyk-w n+o9p2m. The bumpers lock together in this head-on inelastic collision. What fraction of the initial kinetic energy is lost in this collision?

A 15-g bullet traveling 211cox kkiphl* , 7e nzauxgt9a.1u3y:4 3 m/s in a vertical direction buries itself in a 2.4-kg block of wya:z ixtp.lokuk c a4e *13nx,97hu1good 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 j rb0+pk0the b2fhb+u (5/t bah,+qafwith 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 speed of the cars afterbj/fh ahtk+f 0pu ( hb,t5a+rb0 +qbe2 collision?

  A 1500-kg car traveliywgy( jl0;se4 d-wv zuje9ohi:(.,mung at 90.0 km/h east collides with a 3000-kg car traveling at 60.0 km/h soiw ;,wu4(ye:hdum sv ezo(9ylgj.j- 0uth. 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 A moves east with 0 8ig*g 0of8s hpkpb1ua momentum of0 bohp ukgg*pfi188s 0 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 toward the North with -smr3 tlp ya)( 2frn:aa velocity of 4.0 m/s. It explodes into three fragments: a 5.0-kg fragment moving west with a speed of -(s2)a :3rrlmaypn ft8.0 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 bm;)ma nwdblin00 a;rz8j,+forigin, and a 10.0-kg mass sits at x = + 21.0 m. Wherj nn0m;lbf;a)ba0 mw+z8, d ire is the center of mass on the x-axis?

  The center of mass of a two-particle system is at the originosu+a8 yeb3cm;qx89j . One particle is located at (3.0 m, 0) and has a mass of 2.0 kg. What isqjmuxy; b98oc8a3 e +s the location of the second mass of 3.0 kg?

  Three masses are positioned as foti7iy:+;xafa2ngs ,) ak *r)z . uohppllows: 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 n2a, rosi.iu*ay )af7tk+)h z xg;:ppthe center of mass.

  Three masses, 1.0 kg, 2.0 kg, and 3.0 kg, are located at (0, 0), (1.0 m,z tso; gt:6r+xv6ov9 p 1.0 m), and+;gz:xvos66p9 vt rt o (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 positionedtaf:m 2; hfwk6lx twem.7+s)sgi55 ma at (0, 8.0), and a 1.0-kg mass is positioned at (12, 0). What are the +6x:)fkhmwsg2atis;wa el7m5mf t5 .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 whole .at5 ho-d3u : k3wiv7fjik2tdleg including the foot when the leg is stretched straight out. Assume the persoui .: a3djo7-dh352tkw k ftvin is 1.60 m tall.