99.36: What happens to th442q -/w m4gi3 bdqavhnfqlb fz)0j.h:q uhm0e inertia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that*;kjf77 :k,hs xji oww does not depend on the quantity of matter present. Which of the following properties is NOT an intrinsic*w:s 7, hkxwkf;7oji j property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Ascfw cgf9t64 )psume the Earth has ma9gfw)fcpc46t ss $5.98 \times 10^{24} \; kg$ 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 thte3/sz )gar (te surface of the Earth. What is the magnitude of the gravitational force actingzt ra)/tgs3(e 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 increase while its accelerath)1 ,pgnmg2o uion decre2 g )opnu,1hmgases?

  00.11: A certain particle undergoes erratic motion. At every,pzvh (eu4vqw2;sot 7tso i yh 9f68*w point in its motion, the direction of the particle’s momentum is t;ssv,yto8 7uzweiv q 6w*fo h 94p(h2ALWAYS

  17.14: A block is suspended in the air at the end of a string held by a ppt m7uf zbp,)rhpbe( jbq8:. *rydd5 *erson. The person pulls on the string uniformly accelerating the block upward for a short time. Duringr,d *rp.dtebj p:b*hf(my)587qubp z 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 is the net force constantly zerd-b4 :q 4hmqlwnx25hyo on tn2 w 54 xym:q4dblh-hqhe object?

  13.28: An object is in fre dlt oro5*f(xkgl, m20 y8qd6se fall close to the ground. A person intervenes and slows the object uniformly to rest. t26*r km qdy5dslx0o,gl(o8fWhich 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 of the acceleration from gravity is g.

  98.03: An object in equilibrium has three forces, F1 of 30 N,a ))7c a+mgilu F2 of 50 N, and F3 of 70 N, acting on it. The magnitude of thl+ucai)7 mag )e resultant ofF1 and F2 is

  01.07: A force of 6 Newtons andke54am. u) xaw a force of 10 newtons can be combine to form a resultant with a magnitude of which of a)xu5am4 .ke wthe following

  10.06: Which of the following stat :9etjjp (tzc0ements is most closely associated with Newton’stj:0j( 9z ptec Third Law of Motion?

  95.06: The reaction force dc;1f+hhp -7a9uw7b .yto :pn aa a7cstoes not cancel the action force because:

  14.14: A box rests on the floor of an 9d;ug(y es,)t(nb hum ijji05 elevator. The elevator is accelerating upward. Which one of the folld5 s(mbghiu,9(y njj0teui ;)owing choices best represents the Newton’s Third Law pair force to the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls downward through the air with constant spee6)tdgzmkh4xmf194 w.v5 kcf id. Which one of the following ci xhv w694f 4m5gckm zt.kfd)1hoices 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 speed of 35 m/s. em t-o)1lnaj/ The batterswings and hits the ball. The magnitude o/ln1-t m eo)ajf the force 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 ). h rfykuxo:;calculator, also at rest. Which one of the following choices ifxhrkoy:;u) .s the Newton’s Third Law pair force to the force that the table exerts on the book?

  05.06: The students in a Physics I class were ie) 5p.vhvm t7b2mk;mwn lab conducting an experiment related to Newton's Second Law. The collected data were displayed on the graph a h2mvkm;tv7 )ep5w mb.t the right. From this graph, what conclusions can the students make?

  99.03: If the net force on an object were doubled while aqn rili(8vv.7t- +c wpskuot23u3i7i t the same time the mass of the object was halved,then the ui8t2. 3vcui+t3wsi q 7 rlikv7n op-(acceleration of the object is

  96.15: A car whose massuso*j)u4r /w a is 1500 kg is accelerated uniformly from rest to a speed of 20j*u/ w)sou a4r m/s in 10s. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is travel*dipkz)j n3 6ding down the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the trailer appl jpdn6di3k* )zies on the tractor is

  99.16: Which of the followb6sb uv /rtn)+ing principles best explains why large tractor-trailer br un/t vsb6+)trucks generally accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rinkb2e,m hl idn;p 7*smux 3d*1zl throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Whb**x1i mm,d u nz2e7l d;pl3shich statement describes the subsequent motion?

  00.13: An object near the surface of the earth wqm+)c(o n.)5bbc;h0dzyqt m iith a weight of 100 newtons is ad5 mo0z ybqccit)h.q(b )+mn;ccelerated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated 2jpt hdifa0/rs6b;he8x 6.k vfrom rest by a constant force of 2400 N. What is the speed of the car 8.;0.a/er 6sf8pbxhkjt6d hvi2 0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 -7t;7m6hiz w*)ds hknqmyv w )m/s slides across a rough horizontal floor before coming to rest. The frictional force act mvwqith) d)7sz-wy;6nhk*7m ing 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 8.0 m acros.-e :0zohquk;f pu 5jss a rough horizontal floor before coming to rest. The coefficient of friction iszq j.u-0f5 ; koupesh::

  09.21: A 20.0 kg box remains at rs.z8zm wg49 hv6h c(xtest on a horizontal surface while a person pushes directly to the right on the box with a force of 60N. The coefficient of kinetic friction between the box and the surfhz8mvhx4 t.9 6 gc(zwsace 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 ac u7gfbs -dx7fm 9.+gbgcelerates uniformly to rest on a horizontal surface. The block travels a 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 blo79 gg g-fbdf+bxu.m7 sck?

  00.21: A car of mass m slides across a patch of ice at a speed v with its brqh5vd66)tgfvg5gu (g akes locked. It then hits dry pavement and skids to a stop in a distanced. ghg fuvg)65v5gqdt ( 6The coefficient of kinetic friction between the 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 patchn wtz;h,oj)p/y/ x0l1 7r0t7msxca sm of ice at a speed v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic friction between the tires awt sm0x7p)1 mxl ,c/s jny7trhz0o/ ;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 slamming on the car's brakep.d:(b 5lmzkemf8km/4- i hk ps and skidding mmp d.-ipkz be5mk kl(:h/4f8 to a stop. How far would the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully conf3;59p aw yyg/sod1bitrol each of the following devices. Which of these devices can cause ady i 3/saf; oy5p19bwgn 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 nelkz .dx 5s6fzpg bw5v.4z(a1ewtons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36 m/s near the surfacexwv(zz kf d6. zba.5se1p4 lg5 of the Earth at takeoff?

  07.21: A box slides to the right across a horizontal floor. A4p(h4ulre h m1 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 an 1 lmrhe4h4(upd the box accelerates to the right, rank the sizes of these three forces exerted on the box.

  02.27: The diagram below shows thv( 0jp3za x7kjree roller coaster tracks of equal length. Assume that on all tracks the roller coasa0pvkzj3( 7jx ter 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 be traveling the fastest at the finish?

  02.28: The diagram below shows rz;n qb;/ wr ,lppb9in :d)+nbthree roller coaster tracks of equal length. Assume that on all tracks the l n+nrrbpin:b/z;b; dq )pw ,9roller 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 rollercoaster cartrolls frictionlessly along thfd.d e/fytky. sb3 /z7e curved track from point A to point C under the influence of gravity. What would be the direction of the y7kde/ffbz.3st. yd /cart's acceleration at point

  02.40: A box with a mass of 50 kg is dragged across the floor 54cd9f zz8tc ng.jq1jby a rope which makes an angle of 300 with the horizontal. Which of the following would be closest to the coefficient of kinetic friction becdjz 9qnf4c.z58 1gtjtween 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 4l5y v1fsbufkh2 jr+8o54skwa 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of static friction is 0.50. What is true of the frictionfor55v ss4yj+ fuw k k8hl21b4 acting on the block after a time of 1 second?

  05.10: A homeowner pushes a lawn mower across pcz/;a)v59t:.rr *nvr +vd c6a rhvrt 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 various forces on the lawn : nachv;*a +d9vr p)r5vr/r ctvtz6.r mower. Which of the following relations among the various force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a so,9wfx(g/of4x1 v v scrate on a table. Neither is moving. Which of the following statements concerning this situationwfg4/sx foov1 s,v(9 x is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is pul7t vy0y+k*wyyb yhl(.jbe(+ pled up a hill with an increasing speyp*j+twl0 7yv y( bhb+y. (eyked. The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?