What is the SI unit of momentumvr 84hx-b o;:u8 iiznk?

  When a cannon fires a cj-lcy gi,0ovhqi; f-t2 a-qq+annonball, the cannon will recoil backward because the

  A freight car moves along a frictionless level railroad track at .zk/ m6mvw4-:vpzxjbconstant speed. The car is open on top. A large loamp- /mb46vzkv jw:.z xd of coal is suddenly dumped into the car. What happens to the velocity of the car?

  A child falls sideways off a sled wh9d o0 s :tpew15oh)omm1:-,wsw aefwhile sledding on frictionless ice. What happens9m:,:mhw)5 1ot wefweds h-wao1p so0 to the velocity of the sled?

  A rubber ball and a lump of putty have epqa q4 2(6+exmf0z (5li tt(l.nrxgdmqual mass. They are thrown with equal speed against a wall. The ball bounces back with nearly the same speed with which it hit. The (4i ( tf6(dxmpx.5n2qgt+qm rea0 llzputty sticks to the wall. Which objects experiences the greater momentum change?

  A sailboat of mass m is moving with a momentum 5m4h 7 g(dcpd0)ypcah 4/l kq7ud+abe p. How would you represent its kinetic energy in terms o 4+eadh) cm5l0gbhkdq/4c7y( dapp 7u f these two quantities?

  If you pitch a baseball with twice the kinewl w;t;,qb f g-f9 yvk7 9qj7r)yzdkx;tic energy you gave it in the previous pitch, the magnitude oqv9kjf- 97; 7;drt;lfy kbyxqg,) wwzf its momentum is

State Newton's second law in terms oka6 (g1x5 /j7i9w9ewncx6dgk ;ld csd f momentum.

State the law of consh*hfj93cat e1t* vns;y) ga:oervation of momentum.

  The area under the curve on a Force versus time 0yk orka ;cus3/g (:lz(F vs. t) graph represents

  Which of the following is an aj8yo;q gypzar k a6))2ccurate statement?

  A small car meshes with a l5, sg e/s p.asdg,4yucarge truck in a head-on collision. Which of the following statements concer/cp ,45a.gseus,g sdy ning the magnitude of the average collision force is correct?

  Two equal mass balls (one red and the other blue) are dropped from the svr fv4ji:n69 kame height, and rebound off the floor. The red ball rebounds to a higher position. Which ball is subn:r i6kvv4f9j jected 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 s8snxxr5;d/p8 v d2gjr3lm.hutationary bowling ball. The Pingh8 2;u/m 5dn x sx.dv8lp3rrjg-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 ofr+v .fq6m 2jw u5kzh;zf each other. Linear momentum

  A 3.0-kg object moves to thaf -+dv0w:t(x3 6w ukc hswvm3e right at 4.0 m/s. It collides head-on with a 6.0-kg object moving to the left at 2.(v av:3+w m-dwhku3txs0 6cwf0 m/s. Which statement is correct?

  A 100-kg football linebacker moving at 2.0 m/s tackles w6bf/j-z5xxum su*rv js 3 h73head-on an 80-kg halfback running-fbvr huw5jx3u z /js3m*x s67
3.1 m/s. Neglecting the effects due to digging in of cleats,

  In an elastic collision, if the momentum is conservchk7ch3 fh, t1ed, then which of the following statemeh,71hkch tfc3 nts is true about kinetic energy?

  When is kinetic energy conserzf8sdjh; (w8hdru nm eh921w 18qm h.uved?

  In a game of pool, the white cue bal92j)e qzl t:k;0a 4yvrsf td9bl hits the #5 ball and stops, while the #5 bal :vldy99 j tq0zka) e2b;tr4sfl moves away with the same velocity as the cue ball had originally. The type of collision is

  When a light beach ball rolling with a s w*(ein7zeg 1kflx: i)8w5aobpeed of 6.0 m/s collides with a heavy exercise ball at rest, the beach ball's speed after the collisi8e iezo *kl)b75w:a(1wxin fgon will be, approximately,

  A golf ball traveling 3.0 m/s to ;.)lar-1fpzk)/ hq q3p sbt szthe right collides in a head-on collision with a stationary bowling ball in a friction- st.q /p1qk;alzphz3s)f)b -rfree 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 elasticzaug w 5,th d0wl gbu42*zsm+,ally with an identiczzut sd05,ha 2*wwb g,mg +ul4al ball at rest. What is the speed of the initially stopped ball after the collision?

  A very heavy object moving with speed v collides507qknr;dmtxs8 )fk c head-on with 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 object afterkrnt 875md;0 )xfsqk c the collision?

  A very light object moving with speed v collides head-on with a very heavy objechwv(zo0*adw7h- le r a- io(q6t at rest, in a fh6ave(wl d h*i0q(w7o -aoz-rrictionless environment. The collision is almost perfectly elastic. The speed of the heavy object after the collision is

  A red ball with a velocity of +3.0 m/s coll,nm nbnew6 s5z0rw)o 9ides head-on with a yellow ball of equal mass moving with a velocity 9w 0b rn)nze,swm65on of -2.0 m/s. What is the velocity of the yellow ball after the collision?

  A very heavy object moving wibz8;4rldg ;qj th velocity v collides head-on with a very light object moving with velocity -v. The collision is elastic, anlbg dj 84;;zqrd 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 th/hy 63g,percxe momentum is conserved, then which of the followgy 6perx,/ch3 ing statements is true about kinetic energy?

  Two objects collide and stick together. Kinetic idsqx /v+3:*si+chuzenergy

  A 3.0-kg object moves to the right at 4.0 m/se /p0ffdt cetw((59 hj. It collides in a perfectly inelastic collision wipdf9e( e/thf0tw5( jcth 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 sti nn0aktj)i m.,cks. Which object experiences the larger magnitudn,0. maijk )nte of momentum change?

  In a game of pool, the white cue ball hits the #9 ball andrh zqf*/lhx)uso/p54 5z0dfl 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, awyn9fk9( sa 82- emuaM and m. Which of the following statements is false?f29 wuae-(k9 n8m syaa

  Which of the following is a falseu dy8)8t10f j ynmn/kp statement?

  Tightrope walkers walk with a long d)gcgl07u vf b)q;iuy(j lx/0flexible rod in order to

  A plane, flying horizontally, releasesiws. odn(7wlv(o8 cx 7 a bomb, which explodes before hitting the ground. Neglecting airi(o7 s8wn7(do. vlc wx 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 cc. jdie*cq gei(-0 pi2ollision was completely inelastic and both cars quickly came to rest during the collision. What is true about the velocity of theqi(c. jcp-*ei 20 digis system's center of mass?

State Newton's second law for 7ez dkagndn 4: t 1x,rz30.wxna system of particles.

  What is the momentumz9 *ckhq1hl/i *gm.x(9svbec of a 2000-kg truck traveling at 35 m/s?

  A 1200-kg ferryboat is moving south at 20 m/f/x*k8p wax k.s. What is the magnitude of its momxakw8 .p/ *fkxentum?

  A ball of mass 0.10 kg o6b(;* 4vrl/ xmkzo neis dropped from a height of 12 m. Its momentum when it strikes the grounen m/ rv;6k(ol4x*bzo d is

  Two identical 1500-kg cars are moving perpe*c 3wyek3c 6yyjmd +v pa-:;qrndicular to each other. One moves with a speed of 25 m/s due north and the other mov* -cp cr+d e3m6yj y:qykvw3a;es 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,b xr8iz6+pkq2dxso3o 7;f ax 8 strikes a wall and rebounds at 24 m/s.x 88rfsobi6px kxd2 o+q3a7; z What is the change in the momentum of the ball?

  A 0.060-kg tennis ball, initially moving at a speed:n6h9:0m8j u fdofbdm of 12 m/s, is struck by a racket causing it to rebound in the opposite dim68uf:n bf j dmo:h09drection at a speed of 18 m/s. What is the change in momentum of the ball?

  A 50-kg pitching machine (excll59yw0g:9p vlzjy0n ,bi6t 5qhd(m mm3g9x c quding the 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 machine? (Assume negligwqgd9 lbmp9m 53 0 c6lh 059jnmyxgi,tqy:v (zible friction.)

  A 70-kg astronaut is space-walking outside the space capsule 8,hmfpgj q1yh8)jg3s 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/spgs) qhjhj ,gy88fm31 away 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 lar7twi b/cy7wn cc(1r9w ge object at rest. The small object bounces straight back with a momentum7 wcbirwc1t /9(cywn7 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 friend (40-kg ma3 2susbdjan6j zf9cth77e ,rgk0w, +dss), who is standing still, with open arms. As you collide, while holding each other, with what speed do you both move off tfj7+0s aedtub zcw3k , j dng2r,6s7h9ogether?

  A car of mass 1000 kg moves to the right along *loi6 *xx e9hya1a8psa level, straight road at a speed of 6.0 m/s. Itha16o *yeps*li xxa89 collides directly with a stopped motorcycle of mass 200 kg. What is the total momentum after the collision?

  A 1000-kg car traveling at )g+a ddqqa63alb eovsz 9778ne h7tq625 m/s runs into the rear of a stopped car that has a mass of 1583oe lns7daqv qz6)h7tgadqab6 +9e7 00 kg and they stick together. What is the speed of the cars after the collision?

  A railroad freight car, mass 15,0fs8*wms+l 7o t00 kg, is allowed to coast along a level track at a speed of 2.0 m/s. It collides o+* 7 wl8msfstand 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 a7up o3lt wlcvapbhq -)48g:5 e 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 will the car be moving after this happens?p ag c8e-:o4p tub)q3l7h5vwl

  A 60-kg person walks on a 100-kg log at the rate of 0.80 m/s (with re e((h;g5ox dfnspect to the log). With what speed does the log move, with respect to the h g(5;dx (nofeshore?

  A 4.0-N force acts for 3.0 s on an object. c d5mti;j+/fdw0/fmh7x 6dhi The force suddenly increases to 15 N and acts for one more second. What impulse was imparted by i ;dw fxdh5c/j0m+/ 7tfhmd6i these forces to the object?

  A constant 9.0-N net force acts for 2.0 s on a 6.0-kg objecp)05h,hadxcb 1 h qg1bt. What is the object's change oqahgbh,d 1 5bc0hp x1)f velocity?

  A 2000-kg car, traveli o;:iqnz8 vu.lwna.z9ng to 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 exerts oi qn.a:.o;wu z n9zlv8n the wall?

  A 2.0-kg softball is pitched to you at 20 m/s. You hit-clfa1 6;u8s ;z5 f5ryqhpwxj the ball back along the same path, and at thzf sf;j la 8;1r5-h6c qy5puwxe 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 table top. The vzxd6u680mf qspeeds 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 xu6qmf 6v8zd0s, 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 buaz nkm mtvt kvl1+t( juk3g6,.h6y-o2llets, with a muzzle velocity of 750 m/s, at the rate of 3, jz6vykt o132th(gkm utv6nl.+km -a00 rounds per minute. What is the average force exerted on the machine gun mount?

  A fire hose is turned on the door rwpq +ms*;za0 )k1 zajof 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 tzmw+;j0*s)p1a kzq ra he minimum velocity of the stream needed, assuming the water doesn't bounce back?

  Water runs out of a horizont)xmz avg7c+:eal drainpipe at the 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 eec v+g7):xmza xert on the ground?

  A toy rocket, of mass 0.owvv id5sz) 8)12 kg, achieves a velocity of 40 m/s after 3.0 s, when fired straight up. What average thrust force does d8wzs)v5v )oithe rocket engine exert?

  Two astronauts, of masses 60 kg and 80 kg, are initially at rest in outer spxykc-bj rioia :8*:0sace. Thcbri80xa:k -j*io y:sey push 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 vj/r1x) y u- wpn(65usk0c hcispeed of 2.0 m/s. It collides in a perfectly elastic collision wu 0i1 cxs)vy n(/ hwr6cp5k-juith 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; sr25 tr)lyls 0.20 m/s in the +x direction makes a head-on elastic collision with a 0.15 kg object initially at rest. What is tlrs )r; s2l5ythe final velocity of the 0.10-kg object after collision?

  A 10.0-g bullet moving at 300 m/s is fired int(cu-ew5kw3 a eo a 1.00-kg block at rest. The bullet emerges (the bullet does not get embedded in the block) with e35wkwce (-u ahalf of its original speed. What is the velocity of the block right after the collision?

  A proton, of mass m, at rest, is struck head-oz7imt ak7796pzow32b imto n 3n 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 9nzmibwi k2m7pz3o tota 6 377alpha-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 stationary ball of mass 1oz -ytwp7uv/)bijc 2,b kah(500 g. The collision is elastic. h-jp by ok( 2 abzut7iwv,5/c)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 collideg6eex ; w-(dajs head-on with a 200 g ball sittiax- ;dewe6g( jng 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 speed 7s scv vft8d;+gl/,c.o -sakmrb,z-b of 5.0 m/s. It collides head-on with a 3.0 kg mass at rest. If the collision is perfectly inelastic, what is the speed of the masses af 7vtm8ab rb;gl,/v,-z +dc ofkss.-scter the collision?

  A 2.0-kg mass moving to the east t1 rva.:iasx. at a speed of 4.0 m/s collides head-on in a perfectl1t. .s:a xarviy inelastic collision with a stationary 2.0-kg mass. How much kinetic energy is lost during this collision?

  A car of mass m, traveling with a z; h/rxd/ulier5).; yhh.w hd velocity v, strikes a parked station wagon, who's mass is 2m. The bumpers lock together in this head-on inelastic collision. What fraction of the initial kinetic energrh d.5d;)reyh;hh/ z xu/w.liy is lost in this collision?

A 15-g bullet traveling 213 m/s in a vertical direction buries itself in a 2.4h*t*7zgras n83mv g6t-kg block of wood a rest directly above it. As a result, the bullet/block combination moves g6*8ha*tz7g rv3nmst 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 colli vos8j)sr, ta-k0 l.rrdes with a 3000-kg car traveling at 60.0 km/h south. The -8 s,orrj)r.stl0kva 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 t8,ld, 9 8xwj2 ygxer1hhrzm6zi, t41biz ( wfkm/h east collides with a 3000-kg car traveling at 60.0 km/h south. The two cars stick8 r2dhz hlte4m(6,t8g, 1 fz9rzj,wwxb1iixy 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 frice y vj*wsnzqb/,3-583s +scwn kh z7qc. dbrx1tionless 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 o1r bq j/ze cvwsyzs+33d q,5kscn7x.*8w bh-nf their combined momentum after the collision?

  A small bomb, of mass 10 kg, is moviq5c2r9ug kq5 rng toward the North 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 of 10 m/s; and a third fragment with a mass 95urg5 k2qcqr 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 mass sits at x = + 219ogk -0dex( wogzcp-1.0 m. Where is the center of mass on the x-axis0xw z 9(o--cdke1oggp?

  The center of mass of a two-particle system is at the orighy; kp lmup7 dl;3)5vgin. One particle is located ; p)5gpumlylv 3dh;k7 at (3.0 m, 0) and has a mass of 2.0 kg. What is the location of the second mass of 3.0 kg?

  Three masses are positioned as follows: 2.0 kg at (0, 0), 2.0 kg at (2.0, hz e2 o2/s bi/pyfm0a-0), and 4.0 kg at (2.0,f-ih//2y zm20p oab se 1.0). Determine the coordinates of the center of mass.

  Three masses, 1.0 kg, 2.0 kg, and 3.0 kg, are located at (0, 0), (1.0 m, 1.0 m)v:do8dr 7j o;y, and (2.0 m, -2.0 m), respectively. What i8 o d7jvordy;:s 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 pos;s,sb0 udeh k ;/jc1jb/ kx4+,4jjcxxxljy,jitioned 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 masxjb jlkj+4xyx ssujcx je1b 0,j;4/,/c;kh, dses being located at the origin, (0, 0)?

  Use Table 7-1 to calculate ascq+26 faebbjs x9yas 9p+*: the position of the CM of a whole leg including the foot when the leg is stretched straight out. Assume the person is aaysfqcx99b bja2+e 6 sp*+s:1.60 m tall.