99.36: What happens to tiqes 5cln* q67he inertia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one thatffjm vqdtj *l 44j*cg9u-nhd1 z9so55 does not depend on the quantity of matter present. Which of the following properties is NO5hmcoj *4t*l judnv g-9f94dqs j15z fT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume the Earth hamk772)w )8s6x jipguf2 z dwkks mak u7zmwwf2i2k7xdjs)8kgp 6 )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 the surface of the Earth. What3y khq a+3 dj8m7we)pl is the magnitude3edk+w8h3 )p jq 7almy of the gravitational force acting on the earth by the sphere? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an g 7g94 yxg8*a h.a06edi/to j*k8 gev)xkka gbobject’s velocity to increase while its acceleration decreases .k/8k 48x*0gx9dy aagevk)6e*obgi ja hgt7g?

  00.11: A certain particle undergow- bnhiuk8 etf5h f2fp*24as) es erratic motion. At every point in its motion,)k8 fah h ts2fe i*wpnf4u2b-5 the direction of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string held by a ;powqs4 ud-lq3fb f 86person. 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 fo; fp-qbq 6u84s3dlw Newton’s Third Law pair force to the force of the string on the block?

  07.18: In which one of the following sitc5hms zb m zo(6-r;qfrd d5e2)f,u/tu b th(,tuations is the net force constantly zero on the ob-butq5 cmd(e2,f) bmdt hz ru/s5(z6,;ofh t rject?

  13.28: An object is in free fall close to the grouni 31ya- lby ;g,0hdqbwd. 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 of the acceleration 1d3q -0gh;y,abyil wbfrom gravity is g.

  98.03: An object in equilibriumo ywchi5 ;;ie, has three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The ;;i ,cy5oiewhmagnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and aoi+tne9 :db4zw9u ilhlr 54o 9 force of 10 newtons can be combine to form a resultant with a magnitude o t :le odib+9uzhw4i5r4 9nl9of which of the following

  10.06: Which of the following statedj x(tn .0zy,dments is most closely associated with Newton’s Third Lawd 0(yjdt,x.z n of Motion?

  95.06: The reaction force does not cancez9u.ki2 ,kmx8v os) :-vd3e wqd0kgep l the action force because:

  14.14: A box rests on the floor of an elevator. The jyh s1;keoo,(9w (nguelevator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational force acting gkwu9jh1 os n(yo, e(;on the box by the Earth?

  15.15: A skydiver falls downward through the air with c qq(;yza6hyt4odv; v 3ple y(9onstant speed. Which one of the following choices correctly describes the Newton’s v(qptv he(4 ay6o;lq9d;3 yz yThird Law pair force to the air resistance acting on the skydiver during the fall?

  06.08: A baseball is thrown t q /gnz 09sg;pqmy9wg.(73: rhyyntpby a pitcher with a speed of 35 m/s. The batterswings and hits the ball. The magnitude of the force that rq(p3twty mg9;gpy 9y sqnhg z7/: 0.nthe ball exerts on the bat is always

  11.13: A physics book sits at rest on a tableh qe b4iwerq(6vtl63 ,. On top of the book is a calculator, also at rest. Which one of the following choicesbe6 e3,6ql(t wiqrv4h 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 I class (v wytj79vy7 + 3xre*b19gz woq suc8kwere 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 t+rq twkv7ebsw97gjyu3o91* 8v xy (czhe students make?

  99.03: If the net force on an object were d4g pw3ktfw 1c1oubled while at the same time the mass og1 kp 4wtw31fcf the object was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerzadm3qv8 ju6(ated uniformly from rest to a speed of 20 m/s in 10s. The magnitude of the net force accelerating the car iv 3z jud8q6(mas:

  99.05: A tractor-trailer truck is travel zeapf( .auy48ing 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 trzpy48.afe( u aailer applies on the tractor is

  99.16: Which of the following principles best explains why large tractor-tr.fk5ei qfz *g.ailer trucks generally accelerate much more si zeq5 k..gff*lowly that automobiles?

  99.19: A 50 kilogram skater at rest on a friction ftm0 lu3s(.ag6b d2wty* ry8bless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statemb6gt*wft.ry3a(2mysld 8ub 0ent describes the subsequent motion?

  00.13: An object near the surface of t g;j .xhbffn3(t42+ opadm(8*ngimqt he earth with a weight of 100 newtons is accelerato x*jh t (dqgabnf(g23.f tm48p+; inmed at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated fnuiir sol(f(c /jq dw3+lc054 rom rest by a constant force of 2400 N. What is the speed of the car 8.0 s after beginning?(/lqc5f3nd uwsjo4cil + r( i0

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a rough h7(nlsh0 ).qvxag8o ear)tmo /orizontal floor before coming to rest. The frictional force acting on the block )0 vq ltgx8o)samoe(7/ .nrhais 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 acro6g s hh13nlj0tss a rough horizontal floor befo0n1stjh36lhg re coming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horig-1of u+9c2v d-b;see6 xi eumzontal surface while a person pushes directly to the i+ e msu21 ;u gved6x-ec-fbo9right 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 m/s accelerates uniformly to res xk2t2nuue.j;m d(kf *mxz/ goch+; 5yt on a horizontal surface. The block travels a distance of 12.0 m during the slide. Which one of the kktgnc2m +f2 5/ . me;xh*uyd j(ou;zxfollowing 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 spj-/u, ro;zrwyk1 ep9j eed 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 and the dry road ;p1r kr/9ze-owj,jyu is μ .
If the car had a mass of 2m, it would have skidded a distance of

  00.22: A car of mass m 3 4ccdmkil) bcm0q5be2g9w b/slides across a patch of ice at a speed v with its brakes locked. It then hits2 e95wib/bq4mkd0lccg)m c 3b dry pavement and skids to a stop in a distanced. 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 slamming on thesl, :qef5 q*in car's brakes and skidding to : s*ieq5ln,fqa stop. How far would the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an aut 5dnjh-h/eq7 -+gnrii omobile must carefully control each of the following devices. Which of these devices can cause an acceleration in a move/di hngri7hj n q5+--ing car?
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net force on apii2 8*ced,kv rocket with a weight of 15000 newtons is 24000 newtons. About how mucvkp8 2i*dei ,ch time is needed to increase the rocket ’ speed from 12 m/s to 36 m/s near the surface of the Earth at takeoff?

  07.21: A box slides to yzte-tv;;i b,the right across a horizontal floor. 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 - ty;iv ;,etzbf and the box accelerates to the right, rank the sizes of these three forces exerted on the box.

  02.27: The diagram below shows three roller coaster tracks of eq3vka5rz6;6 pug 8doxiual length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly over the tracks to dkp; iozgx366vua 85 rthe 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 roller coasqh29ge t s3up.3zr6.drto am 6ter tracks of equal length. Assume that on all tracks the roller coaster carts start fr3 t zq.3ae6psdtmo92rr 6hug.om 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 cartro .kbv)o2*zr mzt)ywhh .f**dglls frictionlessly along the curved track frof *.bogkd *)* .2vzhwz )mrhytm point A to point C under the influence of gravity. What would be the direction of the cart's acceleration at point

  02.40: A box with a mass of 50 kg isnl ;(l,sa t 4 udnh+ pxzt.9n;j1c(alz dragged across the floor by a rope which makes an angle of 300 with the horizontal. Which of the following would be closest to the coefficient of kineti 1txlsuzj,n( +na9; laclh.z4 p ;(tndc 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 pushhsgb1jkhb1f gb,8n k :u;ztie m-;0 1xed against a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of static friction is 0.5ef8,j: mh zbb ibk; -1k;xh10tsngug10. What is true of the friction acting on the block after a time of 1 second?

  05.10: A homeowner pushes a lawn mower across a horizontal patchuhm4wj k4z2bc3 ,-ghtp;re 3x of grass with a constant speed by applying a force P. The arrows in the diagram correctly indicate the directions butm r h4gx utjb24cz;e,3hkpw3- not necessarily the magnitudes of 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 crate on a table. uu ajf0x2jr/ ,Neither is moving. Which of the following statements concerning this situationr 0jjf,au 2/xu is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the slxgm( 2fik9,xwo qdm2t k;5 jv gj8bo zc,:/v/oeigh is pulled up a h,c; /mxb5 gj8(zd /jvwxg,k9mvoiq2 oo: 2ktfill with an increasing speed. The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?