99.36: What happens to the inertia of an object when its velocity is d5o; isx2asb:i+b l.lyoubled?

  02.14: An intrinsic property of matter is one that does not dep2bde9 *dymnu+vul ; y(c(ct 3dend on the quantity of matter present. Which of the following properties is NOT an intrins;d +(d9cm3* bu cytln2(duveyic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assxgox/ 14z:3/ms;ngt(il tfc oume the Earth has mass zgfig3/t (o/ x:ocx1st ;4lnm $5.98 \times 10^{24} \; kg$ 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. What is 03j*c vhys,z uthe magnitude of the gravitational force actin*j3,y h zsu0vcg 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 accelerk+j,osm(fm 3c7 e9x sration decreasxkos se,rm7(9+mfc 3j es?

  00.11: A certain particle ut-f,1.kp,tj 6p tn wa*4dedvfndergoes erratic motion. At every point in its motion, the nt*j dt w6d p1 f.apte,f4-k,vdirection of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end ofh s/;vdy( id:u 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 follvs:(uiy;hd /d owing 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 situationx 3gmbe9zhy+4,0fuyj s is the net force constantly zero o4bz,e0 xumfjygy+h93 n the object?

  13.28: An object is in free fall close to the groqel6s la6urk,-ye y223qd ;w gund. 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 al-l6;,ere32udw s26qqg y kyby 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 equia 8tm9b/rfezo k-9a4ktzk 9* flibrium has three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The ma* r9a zm9etkf 9tkzk4b o-8f/agnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can b9a 2fawmnfzs(4wx)t 5 e combine to form a resuls wax mtf4a5f(9z2 )wntant with a magnitude of which of the following

  10.06: Which of the following statements is most closel35h nx +9ej.qp)lq pnpy associated with Newton’s Third La.pn 3pxhln+qpj5)e9 qw of Motion?

  95.06: The reaction force does not cancel the action force bec5fgzat2pcq vut*-e13 tro(h m w0-ml +ause:

  14.14: A box rests onxcl;l23g 8t:wmj(,j:thu2m whay mk( the floor of an elevator. The elevator is accelerating upward. Which one of the following cho:(2,2 ytkjlm:3w8 tmaulhwmhjg (x;c ices 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 constn8pi-*;t 6eog djejd1ant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance acting on t e1;djg toe6p- jn8id*he skydiver during the fall?

  06.08: A baseball is thrown by a pitcher with a speed bb a6n 3wbj5h:6g/xbsof 35 m/s. The batterswings and hits the ball. The magnitude of the force that the ball exerga/b6wbb6 bhjx35s: nts on the bat is always

  11.13: A physics book sits at rest oncgcy 6l xkxpc,f: /,u. irm)5n a table. On top of the book is a calculator, also at rest. Which one of the follok/ nui:y,cmxglc ).r6f 5pcx,wing 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 I class were in lab 3+kcup/-)d o.bqdqe kconducting an experiment related to Newton's Second Law. The collected data were displayed on the graph at the right. From thisqeq/db ).u3 k+-dkc po graph, what conclusions can the students make?

  99.03: If the net force on a*g)x,k. o pqm )lvtht2n object were doubled while at the same time the mass of the object was halved,then the acceleration of tp)h)t2*,qv logtx k.mhe object is

  96.15: A car whose mass is 1500 kg is accelerated unifo n3l+zk6at eokv:, l.rrmly from rest to a speed of 20 m/s in 10s. The magnitul.nv o,:6lt+3re zk akde of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass of the trail;tml8x-2qwplxdn 7 b-epxt8 7qxd -;w -2lbnlmr is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explains why large tracq+m9qm +re;rz ndcx64tor-trailer trucks generally accelerate muc;m n49qqerd+cmx +zr 6h more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictioia 7pd:8ybl*6x;iym5o * z z;dpir)u tnless rink throws a 2 kilogram ball, giving the ball a velocdz*yaxlp* ;d5;uy 7:8 i t iimz6bopr)ity of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface of the earth with a weight of 10a9-y-adg5 3g3q d)rmj 6q dxe5ayi cq90 newtons is accele3q j9d-d 9rcqxgqe5ama)a65y3y- d igrated 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 m/gfrh:8pm)u; e /s8jzttww1 03n l7t*xyihistant force of 2400 N. What is the speed of the car 8.0 s aftet)whs8im/ fz7:l m8ux/; *1ne3tihpy wtrg j 0r beginning?

  98.32: A 3.0-kg block : .g hngbyrnhx83d 4d5; qlkp*eo0nev6y -ez/with initial speed 4.0 m/s slides across a rough horizontal floor before coming to rest. The frictional force acting on the bgp3y8e4zrbkn6* dd ve yh: o0/5x;l. nehq-nglock 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 across a s)dmw0k x(1 ryrso+o0 rough horizontal floor before coming to rest. Thxssm+1 00oo dyr)k(w re coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a person pushpo synkb5* 66ves directly to the right on the box with a force of 60N. The coefo6vksyn56p * bficient 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 rest on a9o9 uf w,-ja f*9ceiptozh 8)s horizontal surface. Ta-f9s*ou8) pohe9,jc9fit wzhe 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 block?

  00.21: A car of mass m slides across a patch of ice :qs fb7h7lakf;pdu *cs3b1o1 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 t;:c fuopb1ld7qsb31a k 7fs*h ires 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 patc f/l8b+wade/ yh 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 be+yfdb/ w8/ laetween 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 emerge.7adhw lu /3dey;*xem) )mney ncy stop by slamming on the car's brakes and skidding to a stop. How far would the car have skidded if it had been traveling twice as fast?)em.dh m*wex /yeda3; nu)ly7

  99.39: The driver of an automobile must carefully control each of the r5azkr7r2 /of following devices. Which of these devices can cause an acceleration in a movizrr7aor /25k fng 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 newtold :3ew6 yj((dneq 4hmns. About how much time is needed to increaqlh( n 4dmw(edy36e: jse 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 the right across a horizontal floor. A person 0nflmua9/ ( jiu*f5kkcalled 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 to the right, rank the sizes of these three force0u( anj i*fm fu5kl/k9s exerted on the box.

  02.27: The diagram below shows three roller coaster tracks 64 t hlbt*hbv;ife: 0,ubv-jq of equal length. Assume that on all tracks the ro;0:bebt6hv ilufjv-4,ht* b q ller 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 be traveling the fastest at the finish?

  02.28: The diagram below shows three roller coaster tracks4ocgg2v qm 1 az1)qm.n of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly over the tracks to)g.nc124vm 1 q qgzoam 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 cahuzs df(l;l3h0j0hk b5f1: gmrtrolls frictionlessly along the curved track from point A to point C under thd:m ku0flbhgjl5;sz1h( 3f0h e 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 is dragged across the(qjp btvbu:j,n 35 f8m floor by a rope which makes an angle of 300 with the horizontal. Which of the following would be closest to the coefficient of kineticb(tu 3,5 jqbmfnjpv 8: 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 againstz1ihyo79rzg +tm:e / o a wall by a 100 N force as shown. Thecoefficient of :oozy+r97it 1z/ghem 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 lawn mo .;2:ptft q xcvl1ets0wer 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 various forces on the l s.2; vcpxfl:0 t1eqttawn 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. Nem (e-7m3fxz0 xi vfi+;h;x 0c p1glxfxither is moving. Which of the following statements concerniz mv;(g xfxli0f3hxe1;cfx0i 7-+ mxpng this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is pur- vy;w97jsea lled up a hill with an increasing speed. The crate is not fastened dowr9ave7y; w -sjn to the sleigh. What force is responsible for the crate’s increase in speedup the hill?