99.36: What happens to the inertia of an object when it41eomf9 ;t+6avomc 6afm spsyo7rr )8s velocity is doubled?

  02.14: An intrinsic property of matter is onerobd 08*bi 5lj that does not depend on the quantity of matter present. o5j bri08ld b*Which of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume the Eartrbxu r agesn8,zbj+gl1)8 amko61h*/h has mass /au1lxr+,j8 gbhkmg8as zb6)* oe nr1 $5.98 \times 10^{24} \; kg$ 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-ce; yr(hwdc*s* gza: the Earth. What is the magnitude of the gravitational force z:;*r dyesw *(-a ghccacting on the earth by the sphere? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to uj..d i m*3qkqu1-wj uincrease while its acceleration decreasu-wjumjk q13.* u .dqies?

  00.11: A certain particle undevexgl leci(8w*5w *aqsd p, ;ho)m8. drgoes erratic motion. At every point in its motion, the directio)8 ;xdgi 58vam(,els* cpwewhl dqo*.n of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string hel p. sigfm/+*x t:fda1nd by a person. The person pulls on the string uniformly accelerating the block txga+ i1p.m d*/nf:fsupward for a short time. During this time, which one of the following choices correctly identifies the Newton’s Third Law pair force to the force of the string on the block?

  07.18: In which one of the following situations im)d9 8o.l:kmle dguc ) 1 vgvx txtm,;9uha38ds the net force constantly zero on the object?d9h 8g mev xuc);3g t. o)a,vdd8:um9kmlt lx1

  13.28: An object is in free fall close to the ground. A person intervytjaj ow .c ;lay;)0k,enes 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 accelerationl.y tacw , y;kaoj0;)j is a and the magnitude of the acceleration from gravity is g.

  98.03: An object in equiwpomk . ;;:jwtlibrium has three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting omo twjwk:p.; ;n it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons uqqliw9;98 q- 4yqdkw and a force of 10 newtons can be combine to form a resultant with a wi dkq 9;w4lqqu9y-q8 magnitude of which of the following

  10.06: Which of the following statements6dj p b6f -dsp1.pyg34o.e 9fyqnnem , is most closely associated with Newton’s Thig6 f.39s6.noq1jfd- ymepd,p nbeyp 4 rd Law of Motion?

  95.06: The reaction force does not cancel the action force because:e/(fq6gz p d*y ebzf25

  14.14: A box rests on the wxri06 bzpyg2 0wb0z+floor of an elevator. The elevator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law w2g0+rxiz 0p 0yb zbw6pair force to the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls doxwq1skl-5 5qj wnward through the air with constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance acting on the skydiver during thw1qx5k5lj q- se fall?

  06.08: A baseball is thrown by a pitcher with a speed of 35 m/s. m zcu2q od *p2zw,qt04 The batterswings and hits the ball. The magnitude of the force thatc0pzu z 24o,mqq*w2td the ball exerts on the bat is always

  11.13: A physics book sits at rest on a table. Ovifd fxj;pwen-6 gboz4k/ w/w2q/s ; ,n top of the book is a calculator, also at rest. Which one of the following choices is the Newton’sx ,/; zw/qisonpfbw4 jf-62e/vwgkd ; Third Law pair force to the force that the table exerts on the book?

  05.06: The students in a Physic *w2q)lq mc0sgs I class were in lab conducting an experiment related to Newton's Second Law. The collectq 0*cglw2 s)qmed data were displayed on the graph at the right. From this graph, what conclusions can the students make?

  99.03: If the net force on an objeq5 u :a 2oeawq/pzn4uf;wij 4to2l;n jw.87zwct were doubled while at the same time the mass of the object was halved,then the acceleration of the o5utw aaj 2u;p z87wqe w. w2of/znn4iqojl:;4bject is

  96.15: A car whose mass is 1500 kg is accelerated uniformly from rest to a gjkn.7 omyd 9+speed of 20 m/s in 10s. The magnitude ofyom k.9+nd g7j the net force accelerating the car is:

  99.05: A tractor-trailerm4c3 ubrjpq76j4 pq qt z .nc*d3x4gx3 truck is traveling down the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerat pgqjjn33x u mq4*4 pbc3tr.7d6 cx4qzes forward, the force that the trailer applies on the tractor is

  99.16: Which of the follo: e61inmizkq1 .t;ta shtx )9cwing principles best explains why large tractor-trailer trucks generally accelerate much more kc)atmn.:si1q x1 6h; et9tzislowly that automobiles?

  99.19: A 50 kilogram skater at rest on opc1 /sa;bo 80l(cubma frictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement describes the subsequentu/bbm;o1a0pc 8o(sl c motion?

  00.13: An object near the surface of the earth with a weight o vrkhju8 xf654f 100 newtons is ac45rufxv6jk 8h celerated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is arrjx5x 2amneg1l6 9*kccelerated from rest by a constant force of 2400 N. What is the speed of r exm kglx 1*2rn59ja6the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a rz hxbm+ncciw0u 4 v8 r9z*j-kv6-d0ewough horizontal floor before coming -8i-jhc kcx4 evmdw zu0+nvr6w zb *09to rest. The frictional force acting on the block is 3.0 N. How far does the block slide before coming to rest?

  95.38: A block with initial velocity 4.0 m/s slides 8.09zzcd4fs*dd x15x . bz m across a rough horizontal floor before coming to rest. .z91*dz4dfscdz x5xb The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizoi3n neu 4g7,btntal surface while a person pushes directly to the right on the box with a force of 60N. The coefficient of kinetic fb 7nn gu4tei3,riction 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 m/s accelerates uniformly to rbpovedo4 ;/y8est on a horizontal surface. The block travels a distance of 12.0 m during the slide. Whic;b/d yo 8e4vpoh 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 vnk27lc kv-1 sn with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic friction between the l7 n12k-scnkv tires and the dry road is μ .
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 its bradzdb)9p m*i )-/uzodh mcqp2q*3 l x/qkes locked. It then hits dry pavement and skids to a stop in a distanced. The coe)/c)**9qd-hud pp/zqqox zm3 d l ib2mfficient 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 h5i.z a/ +r76ln mmjq9 blhcu2slamming on the car's brakes and skidding to a stop. How far would the car have ski bm7h ihn5l9jz2arq/u6+lc.mdded if it had been traveling twice as fast?

  99.39: The driver of an automobc;s8i7tvk;ah.v 6heuile must carefully control each of the following devices. Which of these d8 cvs ;.ieahuvk;t7 h6evices 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 l5ej4k )zsm6h 15000 newtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36 m/s near the surface of the Earth at takesejmk5 6) l4zhoff?

  07.21: A box slides to the right across a horizontal floorjhka 5s7)odq:. A person called Ted 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 q7: dkohj5a)s to the right, rank the sizes of these three forces exerted on the box.

  02.27: The diagram b;ce z. bex(8rdjbj ia cp d,2+o8li)1oelow shows three roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation a1dp br+b8i.2c8de eljo a, ;j()cxoi znd 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 be traveling the fastest at the finish?

  02.28: The diagram below shows three rol6 4b 71axinw.qxcf92sz uf7fcler coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at sqbf9c 6 7f7in uxw.4cxf1z a2the 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 rollercoaster cartrolls frictionlessly along the curved qj:lc 2 t0j4eytrack from point A to point C under the inflt 2:4qe0jjcl yuence of 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 ropxs73 m.s*jtr ae which makes an angle of 300 with the horizontal. Which of the followixj ast7 smr*3.ng would be closest to the coefficient 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 pushed against a wall by a 100 N forwrgy4kkd.g 41j a05o.xsa b-s fyi7+uce 4waf 0r+b jisk y.4 5xygdga.us1 o7k-as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of static friction is 0.50. What is true of the friction acting on the block after a time of 1 second?

  05.10: A homeowner pushes a lawty3l0*v/j1nkq r m9gyn 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 ojrgyk* 9ql1 tnyv0m /3f the various 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 cr,xe .1c mrb5hqate on a table. Neither is moving. Which of the following statements coexh ,. mr51qbcncerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is pulled up b)u x5 zwy,oj2jx1f 4j*l )cksa hill with an increasing speed. The crate is not fa)skj cljxb z*xw4f 5,)12ujoystened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?