What is the SI unit of momeye (75al0zwxd*4gxqyrom 4o;em0 b+tntum?

  When a cannon fires a cannonbaf. d xtb,f0k:ull, the cannon will recoil backward because the

  A freight car moves along a frictionu718axid 5- qf ,8otauf sxw2lless level railroad track at constant speed. The car is open on top. A large load of coal is sud 8lqfsu,1 wxfix-72doatau58denly dumped into the car. What happens to the velocity of the car?

  A child falls sideways off a sled while slense1 mvem 9h+vcc3z25h7b mc8dding on frictionless ice. What happens to the vhme 8b 7ccv 35e19nvczsmm+2 helocity of the sled?

  A rubber ball and a lump of putty have equoe hpwa:3s s*5 jlq-,pal mass. They are thrown with equal speed against a wall. The ball bounces back wit:aw 5p*h,l-qsoe p3sj h 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 wit nkf-g .iz1 zz,oy-oo2y4-aahh1vxs)h a momentum p. How would you represent its kinetic energy in zs h2fgzh- 4)o,1.yoakv z-y-xio1naterms of these two quantities?

  If you pitch a baseball with twice the kinetic energy you gave ) vm* a4q cztxzclijv:kj07 .1it in the previous pitch, the magnitude of mt)l1iazz.* 0xvkjjqcvc74:its momentum is

State Newton's second law in terms v y km* t ,vseqydgl2,m).(na.of momentum.

State the law of conservation of momeny1f.c;3m xk w 28sjzhotum.

  The area under the curve on a Force versus time (F vs. t) grap(at/jupw0u7:x-wbzq(ltyjj:) m +jrt 6w p 2n h represents

  Which of the following is uxdl6w.77ljsm ck r(2an accurate statement?

  A small car meshes with a large truck in a head-on collision. Wmy t -o5 z rw7k n55a7t0kza9;qo(rclbhich of the following statements concerning the magnitude of the average collision fwz9a btym0 kcql5n-zo o5r k7 7;a(5rtorce is correct?

  Two equal mass balls (one red and the other blue) are dropped frec)7uhcl2u b0xw3lw -om the same height, and rebound off the floor. The red ball ree 3lx)wb7lwc-hu uc20bounds 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 speutl/:4(v. e mpwm8zb sed of 4 m/s, collides with a stationary bowling ball. The Ping-Pong ball bounces back to the west, and the bowling ball moves v8m/.mp:l4wub ves z t(ery slowly to the east. Which object experiences the greater magnitude impulse during the collision?

  Two objects collide and bounce off each other. Linear momentvi+s .+t3 cxxtum

  A 3.0-kg object moves to the right at 4.0 m/s. It collides head-orfr6j5ufuno fw)c-el* m44h+ d(ea2q n with a 6.0-kg object moving to the left at 2.0 m/s. Which statement is cof526deena(rq+ fh u -*j 4lw)4cumrforrect?

  A 100-kg football linebacker moving at 2.0 m/s tackleyous 4em6r7ew.c :er z i,sz10s head-on an 80-kg halfback runningeu7s,i:y z wz4 o0s.merer c16
3.1 m/s. Neglecting the effects due to digging in of cleats,

  In an elastic collision, if w.zo mws /8f+jthe momentum is conserved, then which of the followin/o8s+fwj z. mwg statements is true about kinetic energy?

  When is kinetic energy conmqbdvw1w-qq 31i ( ,ymserved?

  In a game of pool, the white cue ball hits the #5 ball and stops, whild (9*fuggb l dmq9ip)cy w:my+ )di-v2e the #5 ball moves away wit9b:i f)lu2+md ycqgid9)-*y p (wmvgdh the same velocity as the cue ball had originally. The type of collision is

  When a light beach ball rolling with a speed ofv yg/(* nc/hj*)rdyzo 6.0 m/s collides with a heavy exo )g yz /n/h*c*jdry(vercise ball at rest, the beach ball's speed after the collision will be, approximately,

  A golf ball traveling 3.0 m/s to the right co :mnphg1gb q05d 9/z8ebrft0ollides in a head-on collision with a stationary bowling ba1ob5z: d0 b98gm e/0qrhftpngll 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 dwxmgw(l-p ,iyt0 ,o(8x/xc/mh)eqn-on elastically with an identical ball ho(,/wdl)x (ig-mympen qc8w,x x0/t at rest. What is the speed of the initially stopped ball after the collision?

  A very heavy object moving with speed v collides head-on with a very light ob7hz39 lw0cxjwject 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 z7lw0h 39 jcxwthe collision?

  A very light object moving with speed v collides head-on uleq8) nvx:1m with a very heavy object at res em18nvux lq:)t, in a frictionless environment. The collision is almost perfectly elastic. The speed of the heavy object after the collision is

  A red ball with a velocg)i/cy*yhbgh7:ixslu0 qv -* ity of +3.0 m/s collides head-on with a yellow ball of equal mass moving with a velocity of -2.0 m/s. What is the velocity of ts 7*:yqbi /xhycgivu 0lh-g)*he yellow ball after the collision?

  A very heavy object moving with velocithmm)v/ )v ir8qy v collides head-on with a very light object moving with velocity -v. vm8rh/vmq )i )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 consemef8ee gfti h*ws8 v3t d+r+,2rved, then which of the following statements is true abo +38fvst+emfe8w,*t i2re gdhut kinetic energy?

  Two objects collide and stick together. Kinetic endgeqtd8d, ra,b h*r80ergy

  A 3.0-kg object moves to the right at 4.0 m/s. I; 9;o5fmbaiunep 1 iq-t collides in a perfectly inelastic collision with -q; 1;5p imfib 9auonea
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 t+ p-qu 2i:lf)d+i 8bmqjw .bnwith a large object and sticks. Which object experiences the larger magnitude of momeiiqw) mjt8 u :n.-fd+l+2pbqbntum change?

  In a game of pool, the white cue ball hits the #9 ball and is deflect-gq8hr/ h (ulb0az w+ned 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 ms4e-um4 m0m ryasses, M and m. Which of the following statements is fals4y-r4ms mmeu 0e?

  Which of the following is a false s+ci s;8k: kns/,z2yxmp6do:i2pbl00 f nepjstatement?

  Tightrope walkers walk with a pz. 9-gld.z9 blk3yiflong flexible rod in order to

  A plane, flying horiz /jiuqcp30 8xqontally, releases a bomb, which explodes before hitting the ground. Neglec xi u0j/q8cq3pting 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 wasjycg 64b1+t4y2 oxs,l-r phi.k4u vvr+ehuc1 completely inelastic and both cars quickly came to rest during the collision. What is true about the velocityyvb4.l,eoijx+g c1t6 1rvk4ruh+s4 hc2pu- y of this system's center of mass?

State Newton's second law for a/e*lla;g(j 3qc uw, fb system of particles.

  What is the momentum of a 2000-kg truc7,4enh bt 5t2/gjct3bjvfqt : k traveling at 35 m/s?

  A 1200-kg ferryboat is moving south at 20/xpl p q5(vid6isic 45p1dc0m m/s. What is the magnitude of its mome6i x(imv/di q1d0 ccp554ppls ntum?

  A ball of mass 0.10 kg is dropped from .e axz/-f-ou ea height of 12 m. Its momentum when it strikeso/-a f .ze-exu the ground is

  Two identical 1500-kg cars are moving perpendicu *6 uocwuv)o7qd j-)hdlar 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 th *v u-hwj 76doqcdu)o)e total momentum of the system?

  A handball of mass 0.10 kg, traveling horizontally at 30 m/sojdi):zv 48lt, strikes a wall and rebounds at 24 m/s. What is the change in the momentum of the vtd :l)8ioz 4jball?

  A 0.060-kg tennis ball, init-e5 o bapv b5)e pj)qht/tf*c5ially moving at a speed of 12 m/s, is struck by a racket causing it to rebound in the opposite direction at a speed of 18 m/s. What is the change in momentumtecvo pa5j q5fbp-)hb e)*t5/ of the ball?

  A 50-kg pitching machine (excluding thqrapu.9 b* iu6o i;rhr9 qn+f.e 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 machib oi.9*pni;.+u6a9qrq r u rfhne? (Assume negligible friction.)

  A 70-kg astronaut is sp .s 8gmw2nt6sbs xl6a9ace-walking outside the space capsule and is stationary when the tether line breaks. As a means of returning to the capsultb 98 xsws6gm6nsa2l.e 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 approacx,1+.. k oepsku ;x*mab0akwuhes head-on a large object at rest. The small object bounces straight back with a momentum of magnitude 4.0 kgm/s. kepo .ak*,k1xw+b;sx ua. um0What is the magnitude of the large object's momentum change?

  You (50-kg mass) skatbmkddu+tgjf5 v (-n/*e on ice at 4.0 m/s to greet your friend (40-kg mass), who is standing still, wbtd5j (/- fngkvm+*ud ith open arms. As you collide, while holding each other, with what speed do you both move off together?

  A car of mass 1000 kg moves to th3grt o4c.i4 tfe right along a level, straight road at a speed of 6.0 m/s. It collides directly with a stopped motorcycle of masstirt f34c.4o g 200 kg. What is the total momentum after the collision?

  A 1000-kg car traveling at 25*gm3orf--yzf ath5c+ m/s runs into the rear of a stopped car that has a mass of 1500 kg and they stick together. What if- *gyh fatczo53-m +rs the speed of the cars after the collision?

  A railroad freight car, mass 15,000 kg, is allowed to coast alsji. 7k4oe78hdjn jc)ong a level track at a speed of 2.0 m/s. It collides and couples.jjh dij c knseo)7478 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 o2 2kl3ixaeda400mjgo n a horizontal track with a speed of 10 m/s. A 70-kg stunt man drops straight downaj0x mkleg4d2i 3oa20 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 r x(0jyqc* +qnzate of 0.80 m/s (with respect to the log)q*x0qzc( +jny. With what speed does the log move, with respect to the shore?

  A 4.0-N force acts foq)ajmpki;. q 4qhy7z/ r 3.0 s on an object. The force suddenly increases to 15 N and acts for ona)m4.qy pjhzqkq/7 ;i e 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 a 6.hslki/h fta2 hj:c3 4f 8b/3s.oectf.0-kg object. What is the object's changecb:fc /h f3ts fsk2 ialhjte.o.8 /4h3 of velocity?

  A 2000-kg car, traveling to the right at 30 m/s11 z1kxub(t yagbjc)ao,nr3iu c,0d7, collides with a brick wall and comes to rest in 0.20 s. What is the average force the car exerts on the wall?c,n7yakgabz 0o xjc u(u3,1td1i)r1b

  A 2.0-kg softball is pitched to you at 20 m/s. You hit the ballz 4uuw tvqg;f/xa2no-pa,18v 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 magnt2 n-q4vfzx v8u1g/a p;uoa w,itude of the average force the bat exerted?

  A 0.10-kg ball is dropped onto a table top. Thxy w(.1uzf+eze speeds of the ball right before and right after hitting z eu+y.w x(1fzthe 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 bh,vjd de4w 88bullets, with a muzzle velocity of 750 m/s, at the rate of 300 rounds dv4,88j wdbhe per minute. What is the average force exerted on the machine gun mount?

  A fire hose is turned on the door of a burning building izfyvbj1 - y7;zn 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 needed, assuming bz;j v1y7fyz-the water doesn't bounce back?

  Water runs out of a horizontal drainpieh;;32iyb kyrn 9-rkkpe at the rate of 120 kg per minute. It falls 3.20 m to the ground. Assuming the water dbn;i hkkr29 -;y3ek ryoesn't splash up, what average force does it exert on the ground?

  A toy rocket, of mass 0.12 kg, achieves a velocity of 40 yg 3arpzhnbw..3*h0 w m/s after 3.0 s, when fired straight up. What average thrust force does the 3wprz. ybwah3ng0*.h rocket engine exert?

  Two astronauts, of masses 60 kg and 80 kg, are initiadj1 50 k+dqu8n s1kyhvlly at rest in outer space. Thvkdy 18snj0quh+5kd1ey push each other apart. What is their separation after the lighter astronaut has moved 12 m?

  A 3.0-kg object moves t- b+i+7fon nx74uodz yo the right with a speed of 2.0 m/s. It collides in a perfectly elasti4+nfiuo+ n7ox z-dy7bc collision with a 6.0-kg 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-ohrcc)49h3 -2duh w 0xp7ngshjn elastic collision with a 0.15 kg object initiallnjh3rw07)c 4x p9g2hc hu dh-sy 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 fired into a 1.00-kg block at rest. The 7zx9 ugin iqd 7zw1+:ebullet emerges (the bullet does not get embedded in the block) with half of its q7x:uwen9zi7d+ z 1ig 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-particle (which ::fhi 4 w+rxh+ 4vivmf/vedz6consists 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? id+ frve:zvwh :x ivh6+4m4 /f(Assume the neutron's mass equals the proton's mass.)

  A 50-gram ball moving +10 m/s collides head-on with a stationary ball ofqq1gk5e )r 5k6o /hra kyk k.btt8h3w4 mass 10 r kw1b .)8kakkhk hoe556tyqrqt34/ g0 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 east with a speed of 3.70 m/s collides h+.6d/tvo c yolead-on with a 200ot/ v c.+doy6l 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 spe3n7jwff o( 4jned of 5.0 m/s. It collides head-on with a 3.0 kg mass at re734fj nj fnwo(st. 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 head-o vt6(*3ev9gb-xkxyasn in a perfectly inelastic collision with a stationary 2.0-kg mass. How much kinetic energy is lost during v v(exxtbg 96a*3sy- kthis collision?

  A car of mass m, traveling with a velocity v,:el3y pybv:r4 strikes a parked station wagon, who's mass is 2m. The bumpers lock tog ey4br3lvy:p: ether in this head-on inelastic collision. What fraction of the initial kinetic energy is lost in this collision?

A 15-g bullet traveling svphi)r:4ba (s9 3 0mpfw*liw 213 m/s in a vertical direction buries itself in a 2.4-kg blois4w0 b(3sh9apm l):frwv*p ick of wood 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 eak(e3 *ocgknr 5st collides with a 3000-kg car traveling at 60.0 km/h south. The two cars*5k c ogerkn(3 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 i4jvr/qoi20(qykmgqh-:, jpe31,hh f6tq zh a 3000-kg car traveling at 60.0 km/h south. The two cars st jr/e,jhh- q:(yfipkz6 0qi hqo v t4qg2h,3m1ick 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 a mxamo14xb*(6 :loa ni domentum of 24 kgm/s. Object B moves north with momentum 10 kgm/s. They make a perfectly inelast6a: 14monxdo l *a(xibic collision. What is the magnitude of their combined momentum after the collision?

  A small bomb, of mass 10 kg, is moving toward the North witr3 ;e afy9b.cvh a velocity of 4.0 m/s. It explodes into three fragments: a 5.0-kg fragment moving west with rf bac3.;yev9a 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 gwg- nwan8 q horxnnx6h;1::+at the origin, and a 10.0-kg mass sits at x = + 21.0 m. Where is the center ofnxrq:1wx-;n+ah6gnw g nh8o: mass on the x-axis?

  The center of mass of a two-particle system is at theqq+o xm21y6qd origin. One particle is located at (3.0 m, 0) and has a mass of 2.0 kg. What iq61mdxyq2q o +s the location of the second mass of 3.0 kg?

  Three masses are positioned as follo5ifp qvj,n0phx,q:37 mcg/ ug,x ,m jyws: 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 the cen,,gq7: p x0nj5gfix ymuhc/ 3p,jq,v mter of mass.

  Three masses, 1.0 kg, 2.0 kg, and 3.0 kg, p-+zley5 lerl )n5j:7gf kf4qare located at (0, 0), (1.0 m, 1.0 m), and (2.0 m, l y5ep 7 re5q4kz)+-n:flglfj-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), rvqr/nd qw;x1qn t 5l b*y6;j3and a 1.0-kg mass is positioned at (12, 0). What are the coordinates of a 4.0-kg mass which will result in x;rt lq y3 r6d nqb;j51nqw*/vthe 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 leg including theqhed y6ujgxd;)ge1 ; 5 foot weh5xeq;gug ;)y6d 1j dhen the leg is stretched straight out. Assume the person is 1.60 m tall.