What is the SI unit ofnloru egn0 t-l8fuc. -txq5 nu):2q .g momentum?

  When a cannon fires a cannonball, the can/a/wtxlgb) 3l zqx7l8 non will recoil backward because the

  A freight car moves along a frictionless level railroad track at constant speed.,gaaqaawpa9 ,q( )y m*9/kla f The car is open on top. A large load of coal is suddenly dumped into the car. 99 agak) *(fway/a ,laaq,qmp What happens to the velocity of the car?

  A child falls sideways off a sled while sledding on frictionless ice. Wh ;r. kqkw8o5jpat happens to .wpkk5q j8 ro;the velocity of the sled?

  A rubber ball and a lump of putty have equal mass. The 0o4*5izvcxdp-i-u i oy are thrown with equal speed against a wall. The ball bounces back with nearly the same speed with which it hit. The p uv-x4 i* o5-oidpi0czutty sticks to the wall. Which objects experiences the greater momentum change?

  A sailboat of mass m is moving with a momentum p. How ka*ke, ys:dc)e98v1 rzyb;kpwould you represent its kinetic energy in terms of these e9r)b1;epz k8avy,:s*ykcd ktwo quantities?

  If you pitch a basebayqj+2bluymd)ce6qd 6p0 * jn8bf:k6tll with twice the kinetic energy you gave it in the previous pitch, the magnitude of itsbbl um2q6dt6e8j+:6j pyn y kdf qc*)0 momentum is

State Newton's second law in terms of momens+c (s2php6ek0 ,er dmtum.

State the law of conservation of 1:sy*og( gw;egsb hlv. e:0vb yu0k.zmomentum.

  The area under the curve on alfr7;s 4np)wc Force versus time (F vs. t) graph represents

  Which of the following is a 7n +nsflyki645di5. mygsfgi*c ;p7in accurate statement?

  A small car meshes with a large tywof /i6hxn0w 4x* s2y24bqgdruck in a head-on collision. Which of the following statements concerning the magnitude ofxy2s2x4f0i4 ogb 6dwwqy/ * nh the average collision force is correct?

  Two equal mass balls (one red anz:i7by2 ol rd e;e7o*vd the other blue) are dropped from the same height,*b2o:ovl d z7 ;reeyi7 and rebound 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 w7ri li,xz(kt-2hw4yd (k+r h zith 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 greater magnitude impulse during the collklk-7r zrhyd h x +it4,2w(zi(ision?

  Two objects collide and bounce off each other. Linearo l 6 m71ua(j+i0fkcan momentum

  A 3.0-kg object moves to the rightd8mn05n: uxmsi1u/ qi )ibwg. at 4.0 m/s. It collides head-on with a 6.0-kg object moving to the lem 5)ubwgn0 /u1sim.xidi :qn8ft 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 halfbaybhv5mrp26-4 uqg- jgck runnm6gv2g4y jq- ubph -5ring
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 f 1vaa p vvgw55fn58*ehollowing statements is true abo5 f 18nh*wvg55avev paut kinetic energy?

  When is kinetic energy l,yr139,v m t dkf9erbconserved?

  In a game of pool, the white cue ball hits the #5 ball and stops, while tgy-r6ox/ 0fb)0 hd6lofei1 eghe #5 ball moves away with the same velocity as the cue ball had originally. The type of xr-/o gog fy 6lbh0if6 1dee0)collision is

  When a light beach ball rolling with a speed of 6.0 4mni(7 afw wru7*n(k gr: amo9m/s collides with a heavy exercise ball at rest, the beach ball's speed after the collision wiluia*4m 77w (kr9fno: nma(grwl be, approximately,

  A golf ball traveling 3.0 m/s to the right collides in a head-on collision wig5) q3k+drob4/jmvc0 rh je1 qth a stationary bowling ball in a friction-free environment. Ifvr od+q0jme 1 g 5bkcj/3hr4q) the collision is almost perfectly elastic, the speed of the golf ball immediately after the collision is

  A rubber ball with a seppq jp0wdmwm 1):m 8 u43ix7nsy)(eopeed of 5.0 m/s collides head-on elastically with an identical ball at rest. What is the speed of the initially stopped ball a ws4oump(ej p:)p83m0 dqx)yw1eimn7fter the collision?

  A very heavy object moving with speed v collides head-on with a very l:ahfv ks0 ,j)bight 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 c hjbf0sak ),:vollision?

  A very light object moving with speed v collides head-on withjz3o-s0 lsq y)fdsg) + a very heavy object at rest, in a frictionless environment. The collision is almost perfectly elastic. The speed of the heavy object after the collisiong f)3 o0+qsz)j sd-sly is

  A red ball with a velocity of +3.0 mtduckv q3(amvn) qn6s297t* w/s collides head-on with a yellow ball of equal mass moving with a vum vn9(q) 2a sv7 kwd*qtc36ntelocity 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 withuheh hg4o ,x1h;jo3j4 a very light object moving with velocity -v. The collision is elastic, and there is no friction. The heavy object bar4 hg heoh;1,4uxj3johely slows down. What is the speed of the light object after the collision?

  In an inelastic collision, if the mus,w9r6;jt tmomentum is conserved, then which of the following statementsmu 6w, sttj9;r is true about kinetic energy?

  Two objects collide and stick togetheij(3xq-jg yh64w0c x +:sk(vj h7p irhr. Kinetic energy

  A 3.0-kg object moves to the right at 4.0 m/s. It collides in a perfec6.;c(g w) oofz;zv nrptly inelastic colliswnfz.)v(op ;6r;gc ozion 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 object experie;rv/fs(tn;r kx;dh n(nces the larger magnitnfv/tdshk;; rnx; ((rude of momentum change?

  In a game of pool, the white cue ball hits the #9 ball and isin1: )di y(mts digh/4+z7s 1a giwxgl,*:xrx 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 g3udjww gx640, M and m. Which of the following statements is falsexj0g3g uwwd46 ?

  Which of the following is a false t0vu9x03xva: s kcrt(statement?

  Tightrope walkers walk with a long fle-)n:sye2l gjbexz (wq a:4r9 mxible rod in order to

  A plane, flying horizontally, releasesu2ogy/z4 qu31m kr*an a bomb, which explodes before hitting the ground. Neglecting air resistance, the center of mass of the bomb fragments, just 12 zu na mru3*ogq4yk/after the explosion

  Two cars collide hean;d*nj w6lrvlq86d8 jd-on on a level friction-free road. The collision was completely inelastic and both cars quickly came to rest during the collision. What is true about the velocity ofd6dqjn *;vr 6wnl88jl this system's center of mass?

State Newton's second law for a system oxt.h18gd9pnsi0 * voof particles.

  What is the momentum of a 2000-kg truck traveling at 3yyke roq*e4dcn5 /;tx;xmu cjq3 kc6*9j(h8x5 m/s?

  A 1200-kg ferryboat is moving south at 20 m/s. Whatd.k s9kfhtpl3ai : ah-jm9e+) is the magnitude of its momentu k3-ljhdmpf s.hae:t +99ika)m?

  A ball of mass 0.10 kg is dropped from a height of 12 m. Itsu6(dx 4djz sl)(jxg *l momentum when it strikes t* gld 4uz6jlxjs(x()dhe ground is

  Two identical 1500-kg cars are moving perpendiv:u5s*46kw o vjkt +y /2vzybyi-9xm scular to each other. 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 m wy4yjtvky5s2u+9 v/zbsv- :6*xi mk oomentum of the system?

  A handball of mass 0.10 kg, travecf79q7; d pc.n ldmto1d80khaling horizontally at 30 m/s, strikes a wall and rebounds at 24 m/s. What is the change in the momeocm0;ncpkqla hd 71ft d .78d9ntum of the ball?

  A 0.060-kg tennis ball, initially movini( tu 1vs;mvt+pd 2;ktg at a speed of 12 m/s, is struck by a racket causing it to rebound in the t1pt u m;+(vvti;sk2dopposite 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) fhp/l0llubaxl .vi u2a/;:t8 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/ivf/hpal;x lll:2t 8.uab0 uhe recoil speed of the pitching machine? (Assume negligible friction.)

  A 70-kg astronaut is space-walking outside the space capsule and is stationary /g h6:xj9le.dqwdyj9when the9g9jhx.6dwl d yj e/q: 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 astronaut move toward the capsule?

  A small object with momentum 5.0 kgm/s 3py:e uq:wqzarq h8*/c,sopgygzfr.9*0o o5approaches head-on a large object at rest. The small object bounces straight back with a momentum of magnitude 4.0 kgm/s. What is the magnitude 8: shqrpopc,:y95r ef/aw3ugyqgq*oo0 .z* zof the large object's momentum change?

  You (50-kg mass) skate on ice at 4.0 m/s to gree:z7z52vfvdqn 8gqic :26y t bq:p1ygyt your friend (40-kg mass), who is standing still, with open arms. As you collide, while ydf7:z5 g qq:bc2pv ntvz2i y 1yg:86qholding 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 a speef;bg(2/xzu 9k;1ag dux - dgtbd of 6.0 m/s. It collides directly with a stopped motorcycle of mass a;-gx/fgxtbuku2;d dz 91(gb200 kg. What is the total momentum after the collision?

  A 1000-kg car traveling at 25 m/st mbgxz8 jv6ngg,)+(b 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 after tbg 6g8vmgx)n+z, j tb(he collision?

  A railroad freight car, mass 15,000 kg, is allowed to coast along a level tracke3wfnl vwg6m9 i:6hf7 at a s: n vg7 f9lwh6f3weim6peed of 2.0 m/s. It collides 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 fripio*;kgd*lle) p 0o f/ction on a horizontal track with a speed of 10 m/s. A 70-kg stunt man drops straight down a ;il*od0pfogek p)/l* 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:e b5f/cscu )yz 2gkjgad .+66v* cqlj on a 100-kg log at the rate of 0.80 m/s (with respect to the log). With what speed doe)* 5fqcdkcbve2al./cy : 6zj6s gg+uj s the log move, with respect to the shore?

  A 4.0-N force acts for 3.0 s on an obwre tz aol )6;+;f)ipqn(x ;ruject. The force suddenly increases to 15 N and acts for one more second. What impulse was imparted by these forces+ x6luwq tfa;)i p n;(roez;r) to the object?

  A constant 9.0-N net force acts for 2.0 s o mfjdv;v0d3 a-n a 6.0-kg object. What is the object's change of velocivfdmd3 va0-j;ty?

  A 2000-kg car, traveling t3qrt*tzz w,o p3w1: kvlm 2fe a+bn7h-o the right at 30 m/s, collides with a brick wall and comes to rest in 0.20 s. What is the average force the car exerh+m,ntl p z3z7e1k:faqo *23- v rwtwbts on the wall?

  A 2.0-kg softball is pitched to you at 20 m/s. You hit the ball back alknxct (-w*lw 2ong 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 average f-n( l xcw*2wtkorce the bat exerted?

  A 0.10-kg ball is dropped onto a table top. The speeds of thqabjn,q0y i,hsgks w;o31 89 l/j5vlye 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 magnitude of the average force exert l,/ kj8y9b s3slaq;g01qhji5 ,no wyved on the ball by the table top?

  A machine gun, of mass -7vzlq/nv mq g24ep7 e35.0 kg, fires 50.0-gram bullets, with a muzzle velocity /lvnpgvez m47q-eq2 7of 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 u41aiyx9 +0: wxrnfu fburning building in order to knock the door down. This requires a force of 1000 N. If the hose delivers 40 kg per0fu ax 1rwiu:y94nf+x 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 kg per m rvf(:,-s (dxybrhgz*inute. It falls 3.20 m to the ground. Assuming the water doesn't splash up, what average force does it exert on the g s-v(xr:d, hy(rgz *fbround?

  A toy rocket, of mass 0.12 kg, achieves a velocity of 40 m/s after 3.0 s, when tvqd jx7mu(- / w*iqt*fired straight up. What average thrust force does the rotw *q qimvux jd/t7*(-cket engine exert?

  Two astronauts, of masses 60 kg and(x7 iyp*jc8 pvg b.0ar 80 kg, are initially at rest in outer space. They pusjvcyp r*(b0 gp8xi .a7h each other 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/sokvn ;0 mb9aeg6u/ k3l-ub ce5. It collides in a perfectly elastic collision with a 6.0-k bke 0cleka5vbg/ 3um9n-;6u og 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-iyjx9v+ e-+5is) 1wteuj mfe3 on elastic collision with a 0.15 kg object initially at rest. What is the final velocity of the 0.10-k- x+s u19jeey3mt )j vi5i+fweg object after collision?

  A 10.0-g bullet movinga2pzdbiv:, 6 )c)kdli at 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) w:pd2akcz ,il)vi) bd6 ith half of its original speed. What is the velocity of the block right after the collision?

  A proton, of mass m, at rest, is stry./ z2jv+ds,q h a;lkbuck 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 ,+ y;qdz2vjkhbs/a.l equals the proton's mass.)

  A 50-gram ball moving bpn25yqhf ),rsgjg a:ro2b87 +10 m/s collides head-on with a stationary ball of mass 10qap7f r8h, nbgo52j:g s)y2rb0 g. The collision is elastic. What is the speed of each ball immediately after the collision?

A ball of mass 400 g moving toward the e/i/w5f7dt csvjgac s:8ltu 6. ast with a speed of 3.70 m/s collides head-on with a 200 g ball sitting at rest. The collision is perfectduj5//6w:s f7as8l.cicg ttvly 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. Itav;qct 3;zri;y9 u(eh collides head-on with a 3.0 kg maqv( 9u3;ahc;y ez t;irss at 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 collides h3d8 k3;xr dqdvead-on in a perfectly inelastic collision wd ;3 kd3rxqdv8ith a stationary 2.0-kg mass. How much kinetic energy is lost during this collision?

  A car of mass m, traveling with axddz j u-d7:xp4bm7g/ velocity v, strikes a parked station wagon, who's mass is 2m. The bumpers lock dx gzb-7d x4u:d 7/jpmtogether 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 v0rg4)8 *kn)ve adweehertical direction buries itself in a 2.4-kg block of wood a rest directly above it. As a result, the bullet/04d)8gr w ha neekv)*eblock 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 collidesynw.2,0wt( 4plqmmajp 9mc 3p with a 3000-kg car traveling at 60.0 km/h south. The two cars stiyt,(3 qw0pl 9jamcp2mm. p 4nwck 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 cq l ktn8.pk 61zl*.o9zykf +wcar traveling at 60.0 km/h south. The two cars stick together after the collision. (See Fig. 7-1.) What is the direction+.zpf lywt1l6 kq9 8kkn ozc.* of motion of the cars after collision?

  Two objects move on a level fricy :rvg18u4t6kn zh ltoqr y.:+tionless surface. Object A moves east with a momentum of 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:1tky:zu ro.y q 4rh+g8tvn 6l?

  A small bomb, of mass 10 kg, is moving toward the North: e(wx866 houkqq*oc46 qsl.. vsa elw 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 4.0-kg fragment moving east with a speed o:q6 o o8q..swslee kcvlw6*a4q x 6(huf 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 atnl:agv 2nor74 the origin, and a 10.0-kg mass sits at x = + 21.0 m. Where is the center of mass on the ln:r42 7navogx-axis?

  The center of mass of a two-particle system is at t8 aomgy/;. 0qahma am1he origin. One particle is located at (3.0 m, 0) and has a mass of 2.0amma ;/mg0q8aay. 1ho kg. What is the location of the second mass of 3.0 kg?

  Three masses are positioned as follows: z*(ytep q,alor;t i0* qbhr0zx : t4o22.0 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 cenlt* ( ,ehq* oi;bt yz:aoxq20rp4zr0tter of mass.

  Three masses, 1.0 kg, +y* lo/jy5 n+( xfu s8 ,l ikunvisqla9w+8/rg2.0 kg, and 3.0 kg, are located at (0, 0), (1.0 m, 1.0 m), and (2.0 m, -2.0 m), respectively. What is the n+awqs//l ++f8o(n8li g*9yku 5lv,yxis urj 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 po/ylm j48a r3cxsitioned at (12, 0). What are the coordinates of a 4.0-kg mass which will result in the center of mass of the system of three x mylj3a/8rc4 masses being located at the origin, (0, 0)?

  Use Table 7-1 to calcula eu1)zu;sh 6esto z3a7te the position of the CM of a whole leg including the foot when th aues13h uzz;so6)te7 e leg is stretched straight out. Assume the person is 1.60 m tall.