What is the SI unit of mome;zl+;dus/u aentum?

  When a cannon fires a cannonball, the cannon will recoil backward2o+h0oi*rx zmd+k -mag )pkb a),8uq m because the

  A freight car moves along a frictionless level railroad track at constako. l6sx97o7:w w:k)vpao lmfnt speed. The car is open on top. A large load of coal is .o 76:lpvskxow)f:kw lam7 o9suddenly dumped into the car. What happens to the velocity of the car?

  A child falls sideways off a sled while sledding on frictionless ice. What h+lvx(g) qj2de)v( ot9 .dx yx0onz8hz appens to the velocity n2yed(zotj v90.(ohgxd))qxl+x vz8of the sled?

  A rubber ball and a lump of putty have equal mass. They are thrown 8bzgl srht52+ with equal speed against a wall. The ball bounces ba2+5blz8srhgt ck 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 mjzm ug2+z8 ;(kjw mz cn*s88to is moving with a momentum p. How would you represent its kinetic energy in terms o8*jzw m+nt(umjs82; cog8 z kzf these two quantities?

  If you pitch a baseball with twice the kinetic energy yxxg 2f9vkq lz3)6e3 ydou gave it in the previous pi ed92)l3vyzqxx kfg63tch, the magnitude of its momentum is

State Newton's second,pq x.tbj+j s:+y :ode law in terms of momentum.

State the law of conservo gk3ntawu) lwx-h6w,- y2ct ,ation of momentum.

  The area under the curve on a Force ve- wq+vkrh1vh) rsus time (F vs. t) graph represents

  Which of the following is an accurate 8 luqy/ny pcxsc. )0(g n:x9t xem;yg8statement?

  A small car meshes with a large truck in a head-on collision. i ljsb*4c+u r3Which of the following statements concerning the magnitude of the average collisiuci4 j3rbs*l+on force is correct?

  Two equal mass balls (one red and the other blue) are dropped from the samekk l8. shn(-wb height, and rebound off the floor. Thekbw8 (n.lh sk- 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 with a sta p+tvka45x5,z cc4ntv tionary bowling ball. The Ping-Pong ball bounces back to the west, and the bowling ball moves very slowly to the east. Which object experiences thecx4 5av5+tcn,tz vp k4 greater magnitude impulse during the collision?

  Two objects collide and bounce off each otlm0bio,4bnu z/p5 q )hgrg:okm4,+miher. Linear momentum

  A 3.0-kg object moves to the right at 4.0 m/s. It collides head-on wbs:;uklbuupc4c(7 c+ ith a 6.0-kg object moving to the left at 2.0 m/s. Which statementc ukb;b:+u4 u (clc7sp is correct?

  A 100-kg football linebacker moving at 2.0 m/s tacvc kpseurn03:2/ ww +jkles head-on an 80-kg halfback rp/:3wwu0r2sckejn+ v unning
3.1 m/s. Neglecting the effects due to digging in of cleats,

  In an elastic collision, if the momentum is conserved, then whicuf ,/e8lytlcp rl3f(h7:y r 35q.dpuz h of the following statements is true about kiney33l hf.ryd(u eut / p5zp8f,lq:rl7ctic energy?

  When is kinetic energy consek -z1ah,iit9frved?

  In a game of pool, the white cue balls p1:gk-fa+g o hits the #5 ball and stops, while the #5 ball moves away with the same velo -of1g:k gps+acity as the cue ball had originally. The type of collision is

  When a light beach ball rolling with a speed of 6.0 m/s collides with a h rr wf;n(2.grueavy exercise ball at rest, the beach ball's speed a r(wfrrn.2 ;ugfter the collision will be, approximately,

  A golf ball traveling 3.0 mtb1lazzca 3p w8+.2ev a/ n5mqvci7 p7/s to the right collides in a head-on collision with a stationary bowling ball in a friction-free environment. If the collision is almamcp+8cnp wi2et1.5 la3/ v7 7zaq bzvost perfectly elastic, the speed of the golf ball immediately after the collision is

  A rubber ball with a speed of 5.0 m/s collidetivr . :z+bc ed,;0dtrxcit61s head-on elastically with an identical ball at rest. What is tii v,0ze ; cdt:1.tr+6 dbxrtche speed of the initially stopped ball after the collision?

  A very heavy object moving with speed v collides head-on with a ver nw x-o9ra.3mpy 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 lign.mar3 p-oxw9 ht object after the collision?

  A very light object moving with speed v collides head-on with a very vqw zqw7l7;e. heavy object at rest, in a frictionless environment. The collision is almost perfectly elastic. The speed of twq vl; q7.e7wzhe heavy object after the collision is

  A red ball with a velocity of +3.o 2 c1lbw8/izh qpl 96,sp5svd0 m/s collides head-on with a yellow ball of equal mass moving with a velocity of -2.0 m/s. diblhvso5,/19p swz6c qp28 l What is the velocity of the yellow ball after the collision?

  A very heavy object moving with velocity v collides head-on with a +; trlu1jccl: very light object moving with velocity -v. The collision is elastic, and there is nouc:1rjl+ct ;l 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 conserved, then whi05dj l ync 4n)qv gax61qmza(-ch of the following statements is true about k5(4- c6nadmja znylqxqv1 g) 0inetic energy?

  Two objects collide and stick together.fm r baz8a-:5l Kinetic energy

  A 3.0-kg object moves to the right at 4.0 m/s. om3r/3pg9w* wr yb7m-d(ax euIt collides in a perfectly inelasticepaormm/x 37(*wbdyur3w9 - g 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 o3 m*o2 me:z)ic5wck srbject and sticks. Which object experiences the l3*wcim s c:)zkme2or5arger magnitude of momentum change?

  In a game of pool, the white cue ball hits the #9 ball and is deflected at ar 9yi.o 82om-pt k,5e5arfvkk $35^{\circ}$ 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 faaiz;-p4en3fj a0re)fca ; j +glse?jjf)paearzg; c + iae04n;f -3

  Which of the following nc*o6kz:;gv 6f) qwpq is a false statement?

  Tightrope walkers walk with a long flexdop; l i68b.y5oym-wcible rod in order to

  A plane, flying horizontal14zpqx6sbsl wp4tk-py :g4 c/ ly, releases a bomb, which explodes before hitting the gr-ktpqpsl4/gp4x6zyb 4 1sw :cound. Neglecting 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 comp/-3axqoqi:yje kr u/- mw -p5nletely inelastic and both cars quickly came to rest during the collision. What is true about the velocity of this system's cej/ y3 i-qqnmx r-uap:-wo 5k/enter of mass?

State Newton's second law for 8du vb 5cby m6-1b4b5bbacg/pa system of particles.

  What is the momentum of a 2000-kg truck trav(vlt q (jhwt0c om ts7av2x-j4h3.lv .eling at 35 m/s?

  A 1200-kg ferryboat is cv1or. h1 sqz(:;.hobez rkq7moving south at 20 m/s. What is the magnitude of its momentuv7qqeo1. ho c;zkr zb1h:(sr.m?

  A ball of mass 0.10 kg is dropped from a height of 12 m. j kmw: ;w5m1vyIts momentum when it strikes the gr 1mj vy:5kw;wmound is

  Two identical 1500-kg cars are moving per25sqmkl) rr 9y;:l 7pt+k1xksfmcybsx c9- 3 mpendicular to each other. One moves with a speed of 25 m/s due north and the other moves at 15 m/s due easm3prs9q c k2l:ckxs;xsbf1kly5 +7m)r -tym9t. What is the total momentum of the system?

  A handball of mass 0.10 kg, traveling horizontally at 30 m/s, strikes a wall a tbe0kk ant6+ z5*m7band reb+b07tn6bkt5 ema z*k aounds 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 struck by aa bhl up3-p;3h racket h-pa3b;h 3l upcausing it to rebound in the opposite 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) is placed on uy- jorr06s,td 6n p;lnq 8:)js chb2fbn 9m)ja frozen pond. The machine fires a 06h;tsf)2 , s0rj:on)bpjcq 6r8nb9y nmd-lju.40-kg baseball with a speed of 35 m/s in the horizontal direction. What is the recoil speed of the pitching machine? (Assume negligible friction.)

  A 70-kg astronaut is space-walking outside the space capsule and is st 0 1m4uhaf4bkiationary when the tether line breaks. As a means of reuk401if4 hmba turning 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 approa9ec( 1pinpd i-zku p5 z2d/t+dches head-on a large object at rest. The small oz +1k/nucdppdze 9d(i-tip25bject 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 your fri3h4k/j aw g*2sht4 lhlzo;y n3end (40-kg mass), who is standing still, with open armtz sl3 h4 4;o/lw ahhyk3j2n*gs. As you collide, 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+vn lh yq4t7c- at a speed of 6.0vq47cyhl t +-n 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 traveling at 25 m/s runs into the rear of a stopped car that has 4-kxni)* zjuhx) upgsj 68ru;a mass of 1500 kg and they stick together. What is the speed of rhs4zpngiuxkxj )uj68) ;* u- the cars after the collision?

  A railroad freight canac+v9 0 .h8myt ciik,r, mass 15,000 kg, is allowed to coast along a level track at a speed of 2.0 m/s. It collides and couples with a 50,000-kg second car, initially at rest and with0inima9y8. ck v,tc+ h brakes released. What is the speed of the two cars after coupling?

  A railroad car, of mass 200 kg, rolls with negligiblemf9wx , 6bmc,oop5 ss7 friction on a horizontal track 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 wmosxm ,wop b6fcs,57 9ill the car be moving after this happens?

  A 60-kg person walks on a 100-kg log at the rate of 0.80 m/s (with respecw,5 rw9(f8xh4+qvf cz ukyc1et to the log). With what speed does th +8wfuxw45fk,qh yevzc9cr 1(e log move, with respect to the shore?

  A 4.0-N force acts for 3.0 s on an object. Theugx0 7 ppc89iw force suddenly increases to 15 N and acts for one more second. What impulse was9wpp0c8 uigx7 imparted by these forces to the object?

  A constant 9.0-N net forcb -/poqj5xi :je acts for 2.0 s on a 6.0-kg object. What is the object's change j5xp:b-io j/q of velocity?

  A 2000-kg car, traveling to the right at 30 m/s, collides ww:0 wb /r)s4dear/ejs ith a brick wall and comes4)e0dws wsj/r/re ab: to rest in 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 b27 wame8 -wmz;0p:lwo 7m3pn, udqvglall back along the same path, andw7pg2 ;ale do:8wzu ,wm0 lqv 3mp-mn7 at the same speed. If the bat was in contact 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 ontlxagf0zj/ bnj)vi 4 mz;b11 nk8r+fu3o a table top. The speeds of the ball right before and right /mbn8arv ij1n lbjgxk3u;+)4 fz0z1 fafter 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 exerted on the ball by the table top?

  A machine gun, of mass 35.uerx (e0m9s1m 0 kg, fires 50.0-gram bullets, with a muzzle velocity of 750 m/s, at the rate of 300 rounds per minute. What is the average force exerted on the machine gu1xmu mree(9s0n mount?

  A fire hose is turned on the door of a b -voifug1wd ka48o4n/ urning building in order to knock the door down. This requires a force of 1000 N. g of/d-4 wa1n8iko 4vu If the hose delivers 40 kg per 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 thex0.s k3nb95 k6 y -idjhz(jqdm 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 thejq-hk6k3zxdbdj5s. m i( n90y ground?

  A toy rocket, of mass 0.12 kg, achi+nm:1j)4;znmj5k mvjcfg 3ei eves a velocity of 40 m/s after 3.0 s, when fired straight up. What average thrust force does the rocket m ;+jn ijncev:jf1 mg zk)45m3engine exert?

  Two astronauts, of masses 60 kg jg)h(itdz j f)-6xvy2and 80 kg, are initially at rest in outer space. They push each other apart. What is their separation after the lighter astronaut has moved 12 xy2 )fz)i d-hvtjj6 g(m?

  A 3.0-kg object moves to the right with a speed of 2.*og2*f55 q(ci26 7jlbbzcfeg gi,tym0 m/s. It collides in a perfectlim i 56ltbf7 c(*z2fg2 g5ygc,joeb*qy 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 collision?

  A 0.10-kg object with a velocity of 0.20 m/s in the +x directioz*dg m8 dorg-;n makes a head-on elastic collision with a 0.15 kg object initially at rest. What is the final velocity of the 0z8rg*d odm-; g.10-kg object after collision?

  A 10.0-g bullet moving at 300 m/s is fired into a 1.00-kg block at r.gv2+ o- 4fzxs4p :plk :dfosq-zz,yoest. The bullet emerges (the bullet does not get embedded in the block) with half of its original speed. What is the velocitypgf4spz-zoo.x zqs+ :-:vdy , okl4 f2 of the block right after the collision?

  A proton, of mass m, at re;,ydcue0z9gs)h1 wh rst, is struck 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? (Assumey z,h)c0;wr 9sgu1he d the neutron's mass equals the proton's mass.)

  A 50-gram ball moving +10 m/s collides head-on with a sz3w ;s uw/jd4jtationary ball of mass 100 g. The collision is elastic. What is the speed ofsz3w wu /j;jd4 each ball immediately after the collision?

A ball of mass 400 g moving toward the ea8aap53 stk (fyst with a speed of 3.70 m/s collides head-on with a 200 g ball sitting at rest. The collision is perfs(tyk5ap fa 38ectly 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 collides head-orlna 1jg bi95 e4tyw46n with a 3.0 kg mass at rest. If the collision is tyrgw459 b6ejni14a lperfectly inelastic, what is the speed of the masses after the collision?

  A 2.0-kg mass moving to the east k5;gu53mmif a5 cez5g((wlob at a speed of 4.0 m/s collides head-on in a perfectcw5 f( kel(a;5zumgmi3go5 5bly inelastic collision with a stationary 2.0-kg mass. How much kinetic energy is lost during this collision?

  A car of mass m, trani,n d2-be.w-yqa /abveling with 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 oya.2 /q-dw enbna-ib,f the initial kinetic energy is lost in this collision?

A 15-g bullet traveling 213 m/s in a vertical direction buries itself inf-*l3hz6i: q;jxriv 9lbr:k i a 2.4-kg block of wood a rest directly above it. As a result, the bullet/bv;ifz-9*jhxi kr :qi3: llbr6lock 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 with a 3000-kg car travel risn-s-0url5 ing at 60.0 km/h s 5-u0 r-ilsnrsouth. The two cars 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 a 3000-kg car trave;su7wdx0st2x9 ip7 a kl3x-i bling at 60.0 km/h south. The two cark3727 s tdbsiu9xpi;xl0 aw-xs 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 fp;p7bem4 +idnrictionless surface. Object A moves east with a momentum of 24 kgm/4e;nd m+ip7 pbs. 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 a velo 7i .5rb3wthnzs( j1etcity 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 of 10 m/s; and a third fragment with a ma(jn 7 1t3tri.sezh5wb ss 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(bjnk ynxv pi.3i7n .*-kg mass sits at x = + 21.0 m. Where is the center of mass on the x-axisv n 7(ji3 .xnkby*i.pn?

  The center of mass of a two-particle system is at the orig77k21gw-3p-tcl5sd jx p vnrnin. One particle is located at (3.0 m, 0) and has a mass of 2.0 kg. What is the location of the secon2rpw57npd1 s7 vxk-ng j l3t-cd mass of 3.0 kg?

  Three masses are positioned as follows: 2.0 kg at (0, 0),evj lv8:euo:;)7h y zvn4c+ xa 2.0 kg at (2.0, 0), and 4.0 kg at (2.0, 1.0). Determine the coordinates of the centeral ) 4uo e nzcyv+xv:;7jv:e8h of mass.

  Three masses, 1.0 kg, 2.0 kg, and 3.0 kg, are located at (0, 0), (1.(d:6mw np7afw 0 m, 1.0 m), and (2.0 : mwd6 pn(waf7m, -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 1.0-kg mass is posr mzrwe wtcvj345 y9*5itioned at (12, 0). What are the coordinates zrwtc*e55m43 wj9 yvr 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 leg including the f9 e.clxrs+7rdx e-fz4 l7uc j)oot when the leg is stretched str7fjlec+ .red4 9cr zx7 )xus-laight out. Assume the person is 1.60 m tall.