99.36: What happens to the inertia of an object when i g -r :gsme,f0fvc6-cvg kvf*3ts velocity is doubled?

  02.14: An intrinsic property of matter a9jgwjy93.gg6(,(z z hi- onhjmeuy: is one that does not depend on the quantity of matter present. Which of the following properties is NOT an intri j.mn:h3i wzg(oyu,-9j 9 gz6eya(gh jnsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume the Earth hj pf9ayoca-( :/9 njszas mass /jzo(9c- fjaayp 9s n:$5.98 \times 10^{24} \; kg$ and $g = 10\;m/s^{2}$ . What is the magnitude of the gravitational force that the boulder exerts on the Earth?

  09.12: A 5.0 kg sphere is in free fall near the surface of the Ea9jva+7 b3 vjdv7vbk2 zrn h. gmz,4u34ry xk0xrth. What is the magnitude of the gravitational force acting on the earth by the sphereuh4 nygvm3z4 r b2kjbazx.,v+k0x7 jvv39d 7r ? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible yi *9erl,i 1j4 tt8mgjfor an object’s velocity to increase while its acceleration decreases?*yi eg1 rl ijjt,m4t98

  00.11: A certain particle undergoes 5 tvohv9nog,d((3 eea erratic motion. At every point in its motion, the direc tvoadv,3(og ee9n5 h(tion of the particle’s momentum is ALWAYS

  17.14: A block is suspended in thew ut j;0 xx82wpypiu cup0j)l8; (ahx6 air at the end of a string held by a person. The person pulls on the string uniformly accelerating the block upward for a short time. During this time, which one of the following choices correctly identifies the Newton’s Third Law pair force to the fo;yctxp x6pu28)l j 0 pi0;j w(uxa8wuhrce of the string on the block?

  07.18: In which one of the following situations is the net force constgj/ jpozjbiz7 zj0 :9)antly zero on the objecpi/bz gjozz9j:70j) jt?

  13.28: An object is in free m8fpxvenfyqru5)j y8w(n/u2u y51* zfall close to the ground. A person intervenes and slows the object uniformly to rest. Which one of the following statements must be true about the magnitude of the acceleration of the object as it is being stopped by the person? The magnitude of the object’s acceleration is a and the magnitude (fj y )5f2r u8w/pnuuqvyx*5mnzey81 of the acceleration from gravity is g.

  98.03: An object in equilibrium has three forces, F1 of 30 N, F2 of lfp)4-w m4km w50 N, and F3 owkm4 f-mp)lw4 f 70 N, acting on it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can be combin aijj698 0m4u sjw(yhse to form a resultant with a magnituhjj(w8 a6imsuy94 js0de of which of the following

  10.06: Which of the following state xlx9gpz *6j6nments is most closely associated with Newton’s Thirdz*l gjn9x6px6 Law of Motion?

  95.06: The reaction force does not cancel the acbk 3wjg2m i+5ltion force because:

  14.14: A box rests on the floor04 q+sf4wdu(yedzb p7 of an elevator. The elevator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law p4y wfubed+z4(07qds pair force to the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls downward through the air with constant speed. Which bw hx fql vm21.b)c/z+one of the following choim)b qw/+h1z 2 cflbx.vces correctly describes the Newton’s Third Law pair force to the air resistance acting on the skydiver during the fall?

  06.08: A baseball is thrown by a pitcher with a spbda qtm 4:h+-reed of 35 m/s. The batterswings and hits the ball. The magnitude of the force-hdq abm +4:tr that the ball exerts on the bat is always

  11.13: A physics book sits at rest on a table. On top of the book is a calculato -p+:9cminn tar, also at rest. Which one of the followinc na:t9ipn+- mg choices is the Newton’s Third Law pair force to the force that the table exerts on the book?

  05.06: The students in a Physics I4 o ;-sr)v jappa.a5+c lbty)w class were in lab conducting an experiment related to Newton's Second Law. The collected data were displayed on the graph at the right. From this graph, what conclusions can tho ya.)a vpar- )wtcspl; 5b+4je students make?

  99.03: If the net force on an object weihr.5c;f,-xq0 xbt/bb p0 qtrre doubled while at the same time the mass of the object was halved,then the acceleratiobtci,-5xb/.bprqr0 qf; ht0 xn of the object is

  96.15: A car whose mass is 1500 kg is amsv. ;gf1e).kbt fvh- ccelerated uniformly from rest to a speed of 20 m/s in 10s. The magnitude of the net force accelerat1s)e;.mk.hfvgb-t v f ing the car is:

  99.05: A tractor-trailer truck is traveling down the road. T(oyt6qk(ha8 fvnb, a/he mass of the trailer is 4 times the mass of the tractor. If the tractor acc ayvakt(6fh (,8 /bqonelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the follo fw5*3eed47vrn5 ttla wing principles best explains why large tractor-trailer trucks generally accelerate muft5d4r ev35e nwa t*7lch more slowly that automobiles?

  99.19: A 50 kilogram skater at v:wbhf b +f+yci w9q+6rest on a frictionless rink throws a 2 kilogram ball, giving the ball a velocity obcf6f v yww 9++qhbi:+f 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near thepdp z;ju*4rbwli*6pa e l(f 43 surface of the earth with a weight of 100 newtons is acceleratefb(4j a uplw z3*4;prd* 6eipld at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated from rest by a con,6 h.ucr-* lq9f+ vybtpvc/aqstant force of/tpb 9vuyav*q.rlc h fc,-q6+ 2400 N. What is the speed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a roddt8mn, o sbgb.:s9q7ugh horizontal floor before coming to rest. The frictional force acting on the block is 3.0 N. How far d9 db:m sgt,ns 87.odqboes the block slide before coming to rest?

  95.38: A block with initial velocity 4.0 m/s slides 8.0 m ahv o gbf(kaa74v +q6l9y hia-.cross a rough horizontal floor -gla ova.bq4 i97fk6hhv(y+a before coming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface .o:uz;hrujsk46 1 zx1a4keu.p 5sibrwhile a person pushes directlyez4 s 1k;j 1usuo5rrz.aukh :b4.xp6i to the right on the box with a force of 60N. The coefficient of kinetic friction between the box and the surface is $\mu_k$ = 0.20. The coefficient of static friction between the box and the surface is $\mu_s$ = 0.60. What is the magnitude of the force of friction acting on the box during the push?

  13.16: A block initially moving at 8 uoyk3( 08jjkd+ (qx4nkkh7qno*rv9x m/s accelerates uniformly to rest on a horizontal surface. The block travels a*kv 983(jnqh 4( xu ox +j70kyndkokrq distance of 12.0 m during the slide. Which one of the following choices best represents the coefficient of kinetic friction between the surface and the block?

  00.21: A car of mass m slides across a patch of ice at a speed v w fv1r:csx,o(qqd6b v(ith its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic friction between the tires and the dry road is μ . d:q,c (fv6(bx soq1vr
If the car had a mass of 2m, it would have skidded a distance of

  00.22: A car of mass m slides across a patch of ice at a speed v with itsgz24c o gdk kg2d:ku0)ip*a r8:x qbs1 brakes locked. It then hits dry pavement and skids to a stop in a distan4dd )uq08 k k zxaoc::rgbi212p*kggsced. The coefficient of kinetic friction between the tires and the dry road is μ .

If the car had a speed of 2v, it would have skidded a distance of

  04.32: he driver of a car makes an emergency stop by s 9qdlacr9 r,rf5)npx0z68foe r*z j 8vlamming on the car's brakes and skidding to a stop. Hnr8)a v z90cl 6rff*8dp,erz5or x9j qow far would the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully control each of the 146jhjl:khnh following devices. Which of these:1 jnl6 hj4khh devices can cause an acceleration in a moving car?
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net force on a rocket with a weight of 15000 newtons is 24000 newtafl j -zlda;9g ;;r*slons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36 m/s near th;ljf9salr d; * la;-zge surface of the Earth at takeoff?

  07.21: A box slides to the right across a horizontal floor. A person called Tedyldgujb+(vf9z.3s 5j exerts a force T to the right on the box. A person called Mario exerts a force M to the left, which is half as large as the force T. Given that there is friction f and the box accelerates to the right, rank the sizes of these three forczl.jvgj3(f9sb y u d+5es exerted on the box.

  02.27: The diagram below showsn uxy3p+x( 17cvnry 9e three roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly ove3y1nxve9 ny7x c p(+rur the tracks to the finish.
If all roller coaster carts start at the positions shown, on which track would the roller coaster cart be traveling the fastest at the finish?

  02.28: The diagram below shows tkmsc4) j(r zf,ol64tjhree roller coaster tracks of equal length. Assume that on all tracks the rl o, zj46k) (fsjct4mroller coaster carts start from rest at the same elevation and moves frictionlessly over the tracks to the finish.
If all roller coaster carts start at the positions shown, on which track would the roller coaster cart reach the finish first?

  02.29: Assume the rollerxrg3kb8cb :z 1coaster cartrolls frictionlessly along the curved track from point A to point C under the influence of8gb :rbz3 1kcx gravity. What would be the direction of the cart's acceleration at point

  02.40: A box with a mass of 50 kg is dragged across the floor by a rope whichv)lw/e2mt q)9*qakmp makes an angle of 300 with the horizontal. Which of the following would be closest to the coefficaqk*/ )t2 m pv9qwlm)eient of kinetic friction between the box and the floor if a 250 newton force on the rope is required to move the crate at a constant speed of 20 m/s as shown in the diagram?

  04.40: A 6.0 kg block initially at rest is q )up5o-++z k nnxtwo(pushed against a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of static friction is u-)(xq w npo+zot5n+k 0.50. What is true of the friction acting on the block after a time of 1 second?

  05.10: A homeowner pushes a law1ahxhd 8.b e8u*0l6f keg g-scn mower across a horizontal patch of grass with a constant speed by applying a force P. The arrows in the diagram correctly indicate the directions but not necessarily the magnitudes of the variohakdh* xfb-u l1e.0g6s ce88gus forces on the lawn mower. Which of the following relations among the various force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crate on a table. Neither is/uhh 7w7pc:zx moving. Which of the fol/w7hcp7h :z uxlowing statements concerning this situation is CORRECT?

  06.15: A crate of toys remains at4 (8q a0tv ja o,;kkaepfeq zohx6739y rest on a sleigh as the sleigh is pulled up a hill with an increasing speed. The crate is not fa j0 ae74fa 8 qyqvaeko6 ,o;kh(t9xpz3stened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?