What is the SI unit of momeeh )z30ubeq04x t dkrlamv;w7c :q::zntum?

  When a cannon fires a ca (q8) muuolt (gc8*pgcnnonball, the cannon will recoil backward because the

  A freight car moves along a frictionless levelt6h)sgv.4u 4 s:5e dxw, zy rslt1y7yg railroad track at constant speed. The car is open on top. A large load of coal is suddenly dumped into the car. What 7yt)1y5sugtg4 .zd4 wv,6sxs: l y erhhappens to the velocity of the car?

  A child falls sideways off a sled while sledding on frix5m1epm;rxp;cyz 0ee3q f(o*ctionless ice. What happens to the vel0(rpeo5 yexx z m1ep;;cm3q*f ocity of the sled?

  A rubber ball and a lump of putty have equal mass. They are thrlld)bd; 95u hcygqp i3z-3f g1own with equal speed against a wall. 9yh;g) f3zb3l5pq-d1ilcu gd The ball bounces 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 jw4 vu756muujt 1pxo4 you represent its kinetic energy in terms of these two quantities? 4 wt5j7uxvu6u4jmp1o

  If you pitch a baseball with twice the kinetic energyvhy6z *2go l;knj8v x921 qg*rdpgi-s you gave it in the previous pitch, the magnitudk2d;lgq12nh -8xgr opzi 9 j v*v*y6gse of its momentum is

State Newton's second law in terms of0faf gaky*qq i):m6,- *miljg momentum.

State the law of conservation of voh8sb ( zet7+momentum.

  The area under the curve on a Force versus time 2+zd5ievt a2 dn )p ne.gfu55v(F vs. t) graph represents

  Which of the following is an agq7h o4p ocph j+)ly*;3ncphrm 5k, 6accurate statement?

  A small car meshes with a large truck in a head-on collision. Whiux1 vma v6pt/s. 5uw;xch of the following statements concernin ;wt/1x 6a.x5uvvmps ug the magnitude of the average collision force is correct?

  Two equal mass balls (one red an+0 0xnr*tz;qk+g0j m6 xmxnjbd the other blue) are dropped from the same height, and rebound off the floor. The red ball rebounds to a hig +6mn 0+k;nx r0g0bxtzx*jjmqher 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 with a stationary bo ;h :v5 v.vszt-ifesu-wlht.e-v 5if;sz:uvs- ving 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 collision?

  Two objects collide and bounce off8u,ho x this 8js*d*trk5 ze;6 each other. Linear momentum

  A 3.0-kg object moves to the right at 4.0 m/s. It collides head-on with a 6.0qc.: . r 0dsps9tbz vm-)/gnib-kg )n.:pqmszbbti9/r cvsg d-0 .object moving to the left at 2.0 m/s. Which statement is correct?

  A 100-kg football linebacker moving at 2.0 m/s ta w8cuzj(oso6 0ckles head-on an 80-kg halfback 0 cu w(os6j8ozrunning
3.1 m/s. Neglecting the effects due to digging in of cleats,

  In an elastic collision, if the momentum is conserve-opxykww 9.t( d, then which of the following stx-w9kwy top (.atements is true about kinetic energy?

  When is kinetic ener ma)ww(v-sx ,a)c c3edkfnt1 s9iw4/xgy conserved?

  In a game of pool, the white cue ball hits the zqfs90-tbj x *#5 ball and stops, while the #5 ball moves away with the same velocity as the cue bal-fs9 jbq*0xtz l had originally. The type of collision is

  When a light beach ball rolling with a speed of 6.0 m/s collides witeeed7sxf0,k ,)bz8u ho b0b6hh a heavy exercise ball at rest, the beach ball's speed after the collision will be, approx e8b6e)kx00h 7osubb,zhe fd,imately,

  A golf ball traveling 37s fgg0a r4)ud.0 m/s to the right collides in a head-on collision with a stationary bowling ball in u7gr4 da0f)sga 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 ene ikp.b0tx mi8;9* bolastically with an identical ball at rest. What 9ipbx.nt*m ie 8;0b okis the speed of the initially stopped ball after the collision?

  A very heavy object movinadya 2 772qkkf axrq30lz2n)b g 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 slo23)rkx zl k207fa2bqdn a 7aqyws down. What is the speed of the light object after the collision?

  A very light object moving with speed vn p 2 q pgj,ip*a(e::tjx:rh;z collides head-on with a very heavy object at rest, in a frictionless environment. The collision is almost perfectly elastic. The speed of the heavy object after the cotpz n j*e r2pjiqah :,p:x:g(;llision is

  A red ball with a velocity of +3.0 m/s collides head-on uydq cn;niq teutcft-(pf4;:6 ;1o:jwith a yellow ball of equal mass moving with a velocity of -2.0 m/s. What is the velocityj f ;pt1tdqun:f o c 4iuy;6c;:n(tqe- of the yellow ball after the collision?

  A very heavy object moving with velocity p7la8gu7ad r)e- p (izv collides head-on with a very light object moving with velocity -v. The collision is elastic, and there is l7 rp-ez8pau ga)(7d ino 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 conservedmf0io k)6c. u3uay6 fd, then which of the following statements is true about kinetiui6afkduf o .0cy6m3)c energy?

  Two objects collide and stick together. Kawl09zo3r b 6zytq0d hl,p ,a2inetic energy

  A 3.0-kg object moves to the right at 4.0 m/sa2iz ,b-raes; . It collides in a perfectly inelastic ;z ir ,s-aeab2collision 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 lar: ez,1jws ) b6hcjfs7rge object and sticks. Which object experiences the larger magnitude of momentum ,j h:s6zcreb1 ws f7)jchange?

  In a game of pool, the white cue ball hits the #9 bals.bvtybdh62 8b je-o 8l 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 m. Which of the following statements is c 6y05; :qunj.fojjiqfalse: 56cj. yqjnf uoiqj;0?

  Which of the following is a false stat *mkvlys9+0xvbvx-,0 mh4qxnement?

  Tightrope walkers walk with a long flexible ri4(t+y.sq e k86ig 7gxg deebge7f5 4qod in order to

  A plane, flying horizontal*-s /wb *yosjlly, releases a bomb, which explodes before hitting the ground. Neglecting air resistance, the center of ms/- jyw lob*s*ass of the bomb fragments, just after the explosion

  Two cars collide head-on on a level friction-free ro /rm)jxz4 .;un5m8ls ofymm*qad. The collision was completely inelastic and both cars quickly ; 5 mo fmz.qnxysmrl48/j*um) came 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 system of pp lgc qm*g66t2articles.

  What is the momentum of a 2000-kg z.hpo ow l8 8oe 7fsu3anf4;+xtruck traveling at 35 m/s?

  A 1200-kg ferryboat is moving south at 20 m/s. What is the magnitude of io,)qx2k(s )nln 0qpwo ts momenqk),w0 sn2)oxnlpo q( tum?

  A ball of mass 0.10 kg is dropped from a heig *:f0nl gxn*)i z1 tr*ybqcd;fht of 12 m. Its momentum when it strikes the ground izfn0 qcydr*g1;f*:l*i )xtn bs

  Two identical 1500-kg cars are58edbpfj r*:i 4xje/g moving perpendicular to each other. One moves with a speed of 25 m/s due north and the other /4bxdj*8epj5gi r:efmoves 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, str7d8v fhpsg,+ohv, lr* ikes a wall and rebounds at 24 m/s. What is the change in the m+pfd 7h8h,vlg*r, s voomentum of the ball?

  A 0.060-kg tennis ball, initially moving at a speed of 12 m/s,ad0b :d al(+et4+fgg li,o. gp is struck by a racket causing it to rebound in the opposite direction at a speed of 18 m/s. What is the change inatp +0l i edo+aggfgb:4d ,(l. momentum of the ball?

  A 50-kg pitching machine (excluding the ba0av8p ibu hbq x6c b1z*a+pt37seball) 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 pitch p cz0 bbiu8xb q*7va1+3pa6thing machine? (Assume negligible friction.)

  A 70-kg astronaut is space-walking outsiz/79cqv 1ki up-g mv;hj, xn7ude 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 awau7q,- vn9hu17v/mzxj cig ;k py 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 o6vjzo2 0f yq1ibject at rest. The small object60yjf1o2iq v z bounces straight 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 si w2 cda1-:cj :bhklq..iw(srl x(j 7your friend (40-kg mass), who is standing still, with open arms. As you collide, while holding each other, with what speed do youlaiq kcjdj:7h1.wi.rw-c(s s2l b (:x both move off together?

  A car of mass 1000 kg moves to the righrqfg1/cg3 i 0tdsq *r*gbc;1muw-e,r t along a level, straight road at a speed of 6.0 m/s. It col/fbggumwdr qr1c,gi 0q*rse ;*ct-13 lides directly with a stopped motorcycle of mass 200 kg. What is the total momentum after the collision?

  A 1000-kg car traveling at 25 m/s runs z-k tyoo 6ur0:tb*3uiinto the rear of a stopped car that has a mass of 15ot uor6z ykbui-t03*: 00 kg and they stick together. What is the speed of the cars after the collision?

  A railroad freight car, mass 15,000 kg, is allowed to coast along a level tra:wfgx jqw6k8y o k.mc9m nq:)2ck at a speed of 2.0 m/s.f:xkg8k :noqm6c)wq. wym9j 2 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 qb3z-2splci;6fvq+7fu 2j dkwith negligible friction on a horizontal track with a speed of 10 m/s. A 70-kg stunt manzbv32ql7+c-squd 2p;f fikj 6 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 oq(afthunl qrpev7/h1 4: ,.ka n 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 re rt7( .khlah au1q /fpq:en,v4spect to the shore?

  A 4.0-N force acts for 3.0 s on an object. The force suddenly increases toi9)9vh 8xfyxcqf o:: n 15 N and acts for one more second. What impulse was imparted by x9v:9oqfncfi:h8xy) these forces to the object?

  A constant 9.0-N net force acts for 2.0 s on a 6.0-kg object. What is the objz6+1h5+lcs8o oqh crvect's changeovcczh6o 8rlq5h+ +1s of velocity?

  A 2000-kg car, traveling k/( g*;9x1kydbzdpeo to the right at 30 m/s, collides with a brick wall and comes to rest ;/9 xkypodd(1 egb*kzin 0.20 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. You hit the bx y6d ghu(v5y9all back along the same path, and at the same speed. If the bat was in contact w d6(xg 59yuhvyith 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. n j5b1h.j mkzzx 3f;+vg+fbh.The speeds of the ball right before and right after hitting thb+5z 3+kfh1zfh .xn. bjmvg;je 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, with a mucrp/-:b( jnqb.5qfv1 7od 5had avu9nzzle velocity of 750 m/s, at the rate of 300 rounds per minute. What is the average forndu v b /c5f7qd.9jo nv1aph:q-5rab( ce exerted on the machine gun mount?

  A fire hose is turned on the door of z dbkf84zj8+9 4mqqtz a burning building 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 the stream neede9fd+8 4qzmt4zjz k8bqd, assuming the water doesn't bounce back?

  Water runs out of a horizontal drainpipe at the rate of 120 kg per minu(qhcbzf/ ixug,3;ocboc 91 y7te. It falls 3.20 m to the ground. Assuming the water 9x/uhq1 z (if,b7by;ococg3 cdoesn't splash up, what average force does it exert on the ground?

  A toy rocket, of mass 0.12 kg, achieves a ddz zy; :a(nb(velocity of 40 m/s after 3.0 s, when fired straight up. What average thrust force does the rocket engine ez;z:aby(dd(n xert?

  Two astronauts, of masses 60 kg and 80 kg, are initially at res yaad09g4 8kxnt in outer space. They push each other apart. What i0 49g8anayd xks 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 collide)c ;vqycjs vtff m2 kgv(//;v3s 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 after the collisionm/ts) c;vf/ v;cvyj gq32f (vk?

  A 0.10-kg object with a velocity of 0.20 m/s in the +x direction makes a head-o id+tg 7q 8:wsn.pmk3sn elastic collision with a 0.15 kg object initially at rest. What is the final velocnkg sti. w7dm+psq8 3:ity of the 0.10-kg object after collision?

  A 10.0-g bullet moving at 300 m/s is fired into a 1.00-kn wo; lj:5fhne/vt21hg block at rest. The bullet emerges (the bullet does not get embedded in the block) with half of its original speed 1v;e2lfwt jhn:5nh o/. What is the velocity of the block right after the collision?

  A proton, of mass m, at rest, is struck heag:ihit3wo 07yd-on by an alpha-particle (which consists of 2 protons and 2 neutrons) moving at speedy73 0o :hiitgw v. If the collision is completely 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 moving +10 m/s collides head-on with a st .pj;0ry45jhtyij (ivationary ball of mass 100 g. The collision is elastic. What is the speed of each ball immediately afterit;4.yv jr0 5 yp(hijj the collision?

A ball of mass 400 g moving toward the east with a speed of 3.70 m/s cole v5ws *ipd0k m/uw*j3lides head-on with a 200 g ball sitting a wdvs *3u*j/k pe05wimt 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 collyrvj+emuy y-7/s g 3c+ides head-on with a 3.0 kg mass at rest. If the collision is perfectly inelastic, what is the speed of the masses after++/ jys3yvgycr-e 7mu the collision?

  A 2.0-kg mass moving to the east at a speeut ( r1i)ymcd*mpw+-md of 4.0 m/s collides head-on in a perfectly inelastic collision with i*mmw)r1 pu(t + ymdc-a stationary 2.0-kg mass. How much kinetic energy is lost during this collision?

  A car of mass m, traveling with a velocity v, strikes a parked station wagon, whf f+rx p1axb50)4us mgo's mass is 2m. The bumpers lock together in this head-on inelastic collision. What fraction of gm pxx)4arbsf+ 0 5f1uthe initial kinetic energy is lost in this collision?

A 15-g bullet traveling 213 m/s in a vertical direction buries itself in a 2.4-kl udnj2dqw3em.+u0 ;7 5 ayjrtg block of wood a rest directly above it. As a result, the bullet/block combination moves vme2trd . aj+unu0ld;7yjq 35wertically 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-kg car travep ,::yptmzk2h5- fict ling at 60.0 km/h south. The two cars stick tog-:pm c:,ztih tf2pyk 5ether 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 collid23o x;k 9t7odpno 6sica9pb2jes with a 3000-kg car traveling at 60.0 km/h south. The two cars spj i7 6 2nt bosop39;oxa2dk9ctick together after the collision. (See Fig. 7-1.) What is the direction of motion of the cars after collision?

  Two objects move on x/:ou)4mwe)t:hb0ok/ zp qjia level frictionless surface. Object A moves east with a momentum of 24 kgm/s. Object B moves north with momentum 10 kgm/s. They ma:b)i /:qxtozkw/4u ph0m j eo)ke 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 Nortn;ty:esyvdfh syos .-5s+;d . h with a velocity of 4.0 m/s. It explodes into three fragments: a 5.0-kg fragment moving west with a speed yov;-s5n tse:. ydd ssy.;+hfof 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, anda+mfm3ff7,g7c9)xz2 t c b8aot v6ew y a 10.0-kg mass sits at x = + 21.0 m. Where is thev8 )73fffcwma9o+x b tcaz 6m,e7gy2t center of mass on the x-axis?

  The center of mass of a two-particle system is aa1 7gx+oq*z:ul rnt :nt 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 m+1 *:u goa nqnr:l7zxtass of 3.0 kg?

  Three masses are positioned as follows: 2.0 kg at (0, 0), 2.0 kg at ( 3 plgar89+esu2.0, 0), and 4.0 kg at (2.0, 1.0). Determ9lg8+ruep3s a ine the coordinates of the center of mass.

  Three masses, 1.0 kg, 2.0 kg, and 3.0 kg, are low+d:6*81c)neqn il ntu; u0n3bugkl icated at (0, 0), (1.0 m, 1.0 m), and (2.0 m, -2.0 m), respectively. What is the location of the cente ki+ cinnb6uuul3n1 l8n )0wdqg;*:ter of mass of the system?

  A 3.0-kg mass is positionel-kat ejlqcs)1mjx7r5 2w/c 5 d at (0, 8.0), and 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 mass of the system of three masltrc 1j7)/slejc-k qw a5m 5x2ses being located at the origin, (0, 0)?

  Use Table 7-1 to calculate the position of the CM of a whole leg inyp j d3p n(9, tz+p-ix5+emqgzcluding the fo pz(ipx + zypqj 9mteg-n35d,+ot when the leg is stretched straight out. Assume the person is 1.60 m tall.