What is the SI unit of mo 51k)dm gi) uj i.c*vpsebuvbb 3h5.d,mentum?

  When a cannon fires a cannonball, the cannon will recoil backward becausvml rx7y ru-pp1s41d9e the

  A freight car moves along a frictionless level railroad track at constant speed.,b.0xs o3nor aefdq61 The0 eq3ad r .nfos6xb,o1 car is open on top. A large load of coal is suddenly dumped into the car. What happens to the velocity of the car?

  A child falls sideways off a sl. b;5fhba-j8f;r 5vght yjxe0 ed while sledding on frictionless ice. What happens to the velocityh5b. a; fghjf-bjv0ety; 8xr 5 of the sled?

  A rubber ball and a lump of putty have equal mass. They are thrown gh 8u ;y: irisp;mh9n6with equal speed against a wall. The ball bounces back with nearly the same speed with which it hit. ;gp yh8mu:;9hrsi 6niThe 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 you represe+lyr5wpj0xgyy*6 7biwg/r/y ljm 08z nt its kinetic energy in terms of thesejyb8/ r+ *plyjgrxyiglw65/my70 w0z two quantities?

  If you pitch a baseball with twice the kinetic energy you gavei:w57ab c; 0i f0sqs-d,pz urs it in the previous pitch, the magnitude of :5 -c 0is;7p,suisbf0qr dwzaits momentum is

State Newton's second lawds, i8ku1nkope 3qs udc7qn7q7 1.*dp cpor, . in terms of momentum.

State the law of conservation of:(j2z a+jitbo momentum.

  The area under the curve on a Force versus time (F vs. t) graph represp(z;2u 3w)j4wc +ic ad 7kvigments

  Which of the following is an a,u-mlg if,z: z:ypzbull2 d8 :ccurate statement?

  A small car meshes with a large truck 9 unine7i*5ne g13ekgin a head-on collision. Which of the following statements concerning the magnitude of5gke1 * e9ginn73i enu the average collision force is correct?

  Two equal mass balls (one red and the other y0 bed9yujj(+blue) are dropped from the same height, 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 ty 09b edjj(yu+he floor?

  A Ping-Pong ball movqx6vaop jq(+ (ing east at a speed of 4 m/s, collides with a stationary bowling ball. The Ping-Pong ball bounces back to the west, and the bowling ball moves very slowly to the ovjx(6qaq +p(east. Which object experiences the greater magnitude impulse during the collision?

  Two objects collide and bounce off hr:+v7(6xfex0(lfj :g ybgileach other. Linear momentum

  A 3.0-kg object moves to the righj,*cewr)k wz jt7lrr g-*y8f*t at 4.0 m/s. It collides head-on with a 6.0-kg object moving to the left at 2.0 m/s. Which statement is correcwt*ry)rjck r*,7 zfgje wl8* -t?

  A 100-kg football lineb:m577byy k;atmrz*xz acker moving at 2.0 m/s tackles head-on an 80-kg halfback7b5:zyk*atmx m ;7 yzr running
3.1 m/s. Neglecting the effects due to digging in of cleats,

  In an elastic collision, if8c65mcj /yil v the momentum is conserved, then which of the following statements is true about /6vlcmi8y5j ckinetic energy?

  When is kinetic energy cong3 1wvi6j8qnaz y** grserved?

  In a game of pool, the white cue ball hits the #5 ball and stops, while t/5h p8+mxiyi s3nkz0 nhe #5 ball moves away wit583 npsnmzii/+kxyh0h the same velocity as the cue ball had originally. The type of collision is

  When a light beach ball rolling with a bi,pck7r o 8x,speed of 6.0 m/s collides with a heavy exercise ball at respc, 7,bk orx8it, the beach ball's speed after the collision will be, approximately,

  A golf ball traveling 3.0 m/s to the right collides 7tt 3x*+j/ddf y1br+czl.ngri2 zmz8 in a head-on collision with a stationary bowling ball in a friction-free environment. If the collisionzrx t ly1mbzfr+7dj2z+dt 8c.n*g/ 3i is almost perfectly elastic, the speed of the golf ball immediately after the collision is

  A rubber ball with a speed of 5.0 )k8*xwfw(n d hm/s collides head-on elastically with an identical ball atxn8kw )d(*fhw rest. What is the speed of the initially stopped ball after the collision?

  A very heavy object moving with speed v collides head-on wi0iv ,er(kafv 0l0) wywl-xix4th a very 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 xvv)lra lwxf0 (i e-w0,0k iy4object after the collision?

  A very light object moving with speed v collides head-on with ahvz3 (,6u dszm very heavy object at rest, in a frictionless environment. The collision is almost perfd,hu6mv3z( zs ectly elastic. The speed of the heavy object after the collision is

  A red ball with a velocity of +3.0 m/s c bu s dtbx+y7*vq0(fh.ollides head-on with a yellow ball of equal mass moving with a velocity of -2.0 m/s. What is the velocity of the yellofys.bxhu7bv0(d *q t+w ball after the collision?

  A very heavy object moving with ve0 h;*nydghx5 llocity v collides head-on with a very light object moving with velocity -v. The collision is elastic, and there is 5d gh0xnh;ly* 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 maw3hgcsc8 b5 co ali2d*8:e 5pomentum is conserved, then which of the following sta55 c8l cieado:h*a 2ps38bgwctements is true about kinetic energy?

  Two objects collide and stick together. Kinetjp ((vct::kfuwgj:tii9m 0hun+u q 80ic energy

  A 3.0-kg object moves to 3xh(;f8u o, mu p-6t(hr ksklithe right at 4.0 m/s. It collides in a perfectly inelastic colliss,(rmt-8 h3 (ku6;xk lpof huiion 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 wit-2bo :nz2 ) /rhxczesjh a large object and sticks. Which object experiences the larger magnitude of )s :zeo /hxnjbzr-2 2cmomentum change?

  In a game of pool, the white cue ball hits the #9 ball and is deflec..2cnq5zm2a ip/lq btted 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 tds / i2,f;)6fn atrysnhe following statements is falseif/)nt 2rd syfan;s,6 ?

  Which of the following is a :oall5 9, osfgfalse statement?

  Tightrope walkers walk with a long flexible rod in order t -ktp66 xss-nmo

  A plane, flying horizontally, releases a bb:el e)e2 pyo,omb, which explodes before hitting the ground. Neglecting air resee2:y pe,olb )istance, the center of mass of the bomb fragments, just after the explosion

  Two cars collide head-on on a level friction-free road ph7y,rzij785jf q(tlt 5-eki . The collision was completely inelastic and both cars quickly came to rest during the collision. What is true about the velocity of this system's center of mass?j-ytr(q iplh,5 5 7zje7t8kfi

State Newton's second law for a system of particle1d9bp r fduiq5a2 4ke8s.

  What is the momentum of a 2000-k/ j4p zt1m:sh:hvg7-pcnnk,kg truck traveling at 35 m/s?

  A 1200-kg ferryboat is moving south at 20 m/s. What is this(gyob;ah q0ll4 3:kqlse. j wp f1.6e magnitude of its momegjlfh03 1; b(i:qlylq k.ewsapo4 .s6ntum?

  A ball of mass 0.10 kg is dropped from a height of 12 m. Its momentum wh9tkrg ):br0gfen it strikes the gkrr 0 9:g)tfbground is

  Two identical 1500-kg cars are moving perpendicular :9 asdpa1ua u3to each other. One moves with a speed of 25 m/s due north and the other moves at 15 as1ua9:adu p 3m/s due east. What is the total momentum of the system?

  A handball of mass 0.10 kg, traveling horizontally at 30 m/s, strikes a wgqikx:yw x3 73xw: y8vall and rebounds at 24 m/s. What is the change in the mome:3gxw 8 yqxixv37 kw:yntum of the ball?

  A 0.060-kg tennis ball, initially moving at a speed of 12 / h.u;k xqo z8o;wpn+jm/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 mou o/koxq.8wh ;+ nzj;pmentum of the ball?

  A 50-kg pitching machine (excluding the be,dt8h)2 w 2oa0tnrx ny,j7sgaseball) 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 machine? (Assume negligible 8tea2hr 7 yd w og,x,n0n2)tsjfriction.)

  A 70-kg astronaut is space-w6skabq):t7 n meoi 8d(alking outside the space capsule and is stationary when toe qdtm7(i): 6nks ab8he 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 approac9 vw+7.ahxigu hes 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 of twhig7xa+uv 9.he large object's momentum change?

  You (50-kg mass) skate on ice at 4.0 m/s to gregjbftr.q(e2xp ,u n x/92kg/vet your friend (40-kg mass), who is standing stilxv (k2rn9jpt,gbg/qx ./ue 2fl, with open arms. As you collide, while holding each other, with what speed do you both move off together?

  A car of mass 1000 kg mov)k nswtu2 5wui8ho*m8e4 up+ces to the right along a level, straight road at a speed of 6.0 m/s. It collides directly with a stopped motorcycle of mass 200 kg. What is the total psu+4w kmt8w*n) h ui5c2ou8emomentum after the collision?

  A 1000-kg car traveling at jkkz vf8yckn./)y8f* 25 m/s runs into the rear of a stopped car that has a ma/8 kf)yky.k8fv cnj*z ss of 1500 kg and they stick together. What is the speed of the cars after the collision?

  A railroad freight chykyrlp )8i vzhlqy6up )b:,m*1)q1yar, mass 15,000 kg, is allowed to coast along a level track at a1* yq:y ,yz 1hup)vmq) klb )r68hpily speed 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 friction on a hot9e/yzr1i;n ky(tu/ l rizontal 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 will the yynlt 1;k9( tiue/rz/car be moving after this happens?

  A 60-kg person walks on a 100-kg log at the rate n1l nw) hc+4vrof 0.80 m/s (with respect to the log). Witn )w +l1nrvch4h what speed does the log move, with respect to the shore?

  A 4.0-N force acts for 3.0 s on an object. The force sa 00yhig,yles:-v7k kuddenly increases to 15 N and acts for one more second. What imp7 :0 y syveiklk0a-hg,ulse was imparted by 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 o:ffonupjrt:z 1;7 +c pbject'snf;:+uzj1:ft 7p ocpr change of velocity?

  A 2000-kg car, traveling to the right at 6pm1k4vjcr3 dz j30ta30 m/s, collides with a brick wall and comes to rest in 0.20 s. What 34ck0p m3vajd j16ztr is the average force the car exerts on the wall?

  A 2.0-kg softball is pitched to you atj71.x xsi3f60qr-t (vjdmp m o 20 m/s. You hit the ball back along the s3xr6(m1 m-x iod 0vqf7s .tjpjame 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 force the bat exerted?

  A 0.10-kg ball is dropped onto a tabl6sgs.1k:p5tlqjc3u5g w7c p ve top. The speeds of the 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, wv j1 cc qgkt63s5wsp:5.7uplghat 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 mu(4nxqyw:4f) b1je ihx,ekn, : -gjh *h qky4zgzzle velocity of 750 m/s, at the rate of 300 rounds per minute. What is the average force exerted kk: 4h4 xehf(bn y)qz,:jxj ei* 4,yng-hw1qgon the machine gun mount?

  A fire hose is turned on the door of a bur,7)pbtgd7 hua u o/3tg tcm/k. +av,qkning 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 tc)77ad mggbo.uphuv/t, q/3 +akk , tstream needed, assuming the water doesn't bounce back?

  Water runs out of a horizontal drainpipedo5f:4qv k323t jrh li at the rate of 120 kg per minute. It falls 3.20 m to the ground. Assuming the5 t4:j32iqd3rvlkohf water doesn't splash up, what average force does it exert on the ground?

  A toy rocket, of mass 0.12 kg, achieves a velociudah; 7ms4ec z r/l+z)ty of 40 m/s after 3.0 s, when fired straight up. What average thrust force rc+sm/7zlh dzu )a4;e does the rocket engine exert?

  Two astronauts, of masses 60 kg and 80 kg, are initially )r.fpk5:w)p iw, l eitat rest in outer space. They push each other apart. What is their :riwi),f lek)5p p tw.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 collides in a p di28j yg)-.d+iozjr perfectly elastic collision with a 6.0-kg object moving to the left at 1.0 m/s. What is the total kinetic energy aftj8joi ry+.)p d2d izg-er the collision?

  A 0.10-kg object with a velocity of 0.20 m/s in the +x direction makes albo9boyn--n*r(k1o a head-on elastic collision with a 0.15 kg object initially at rest. What is the final velocity of the 0.1b 9nn1k*oo o ya(-brl-0-kg object after collision?

  A 10.0-g bullet moving at 300 m/s is fired into ;t9;0p zh sewma 1.00-kg block at rest. The bullet emerges (the bullet does not get embedded in the block) with half of its original speed. What is the velocity of the block right 0zhw; met;s9p after the collision?

  A proton, of mass m, at rest, is struck head-on by an alpha k)ju2x6st/w a-particle (which consists of 2 protons and 2 neutrons) moving at speed v. If the colli x6u)2ksjaw /tsion 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 *hhg94-;rjt qfxc0a k stationary ball of mass 100 g. The collision is elastic. What is the speed of0jchxhg*rq4f-k9ta ; each ball immediately after the collision?

A ball of mass 400 g moving toward the east with a speed of 3.70 m/s colljm)pg*ceu ;3 zvu4i 2tides head-on with a 200 g ball sitting at rest. The collision gc ez ;mut34j)2vip*uis 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 i,i ir7:+yhvcv)z1k ya speed of 5.0 m/s. It collides head-on with a 3.0 kg mass at ry)iyh kv ,1i: +cvirz7est. 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-on 7 ves(::vyj4hfswgf2 in a perfectly inelastic collision with a stationary 2.0-kg mass. How much kinetic energy is losthej:2svf7f(:4w y vgs during this collision?

  A car of mass m, traveling t/vtrt:c 4oaf8wu5w * with a velocity v, strikes a parked station wagon, who's t4:w *ar5t fucwot8/v mass is 2m. 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 213 m/s in a vertical direction buries irjd(a ju0)kc3 tself in a 2.4-kg block udar k (3jj0)cof 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 east collides with a 300a76-eyaupg ofkj9 (5 n0-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 after coj(yo9 fu-kp n7 a65agellision?

  A 1500-kg car traveling at 90.0 km/h east collides wq gkqj(*zo 0j6ith a 3000-kg car traveling at 60.0 km/h south. The two cars stick togeto qj6zqgk0*j( her 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. Obtdse(j+7w)0. u9gwrim fca *+qchy d-ject A moves east with a momentum of 24 kgm/s. Object B moves north with momentum 10 kgm/s. They make a perfectly inelastic coll)jfcic.*het0s-a9d y q7wug(+ wrm + dision. What is the magnitude of their combined momentum after the collision?

  A small bomb, of mass 10 kg, is moving toward the North wimsjht7,z ei*ui *, x+nth a velocity of 4.0 m/s. It explodes intoi,xz+u , n *mhj7se*ti 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 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, and a 10.0-kg ma yy uzn72kwck3xyuz,2ebx70 *ss sits at x = + 21.0 m. Where is the ceny,nw bzu2 y07kk2 zcexux 3y7*ter of mass on the x-axis?

  The center of mass of a two-particle system is at the or6jqgz4hit r v 1ei0mcm9k/d-b6;g tq-igin. One particle is located at (3.0 m, 0) and has a mass of 2.0 kg. What is the location of the second masbd4iqt 6 eg-vr9mk/q0z - 1 gtjc;6hmis of 3.0 kg?

  Three masses are positioned as followsqya 3a-9bvlvmrta 74t8: 4 xlp: 2.0 kg at (0, 0), 2.0 kg at (2.0, 0), and 4.0 kg at (2.0,l r4- q:am t8a3pta4y7vbxv9l 1.0). Determine the coordinates of the center of mass.

  Three masses, 1.0 kg, 2.0hae6qy/ztty9* kx(,d1 ej(t s kg, and 3.0 kg, are located at (0, 0), (1.0 m, 1.0 m), and (2.0 m, -2.0 mj ye/zatq,e1 t9sd(xhty k*6(), respectively. What is the location of the center of mass of the system?

  A 3.0-kg mass is positioned at yl4;hme:;tj1ije wja(t lzmdy 9(y- 3(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 4 mljewm:(yd; h l tj;9t3i1jae-y (yzresult in the center of mass of the system of three masses being located at the origin, (0, 0)?

  Use Table 7-1 to calculysn9 yxw *di1.ate the position of the CM of a whole leg including the foot when the leg is stretched straight out. Assume ix*1s.dwy 9y nthe person is 1.60 m tall.