99.36: What happens to the inertia of xuug/8g30gs g;0d2 l dxcn,lsan object when its velocity is doubled?

  02.14: An intrinsic property of matter is one thatk7h ql-w(h.e x does not depend on the quantity of matter present. Which of the following properties is NOT an intriwhekl7 . (h-xqnsic property?

  04.16: A 20 kg boulder rests on the surface of the s)jds6qzi/*0, jbd aom pn r1tgm3: )fEarth. Assume the Earth has masjj3/)*i,m drgda016q nbo tzfs) :mpss $5.98 \times 10^{24} \; kg$ 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 nearb+.w.cs+dp u(vzw: o uvui, s6 the surface of the Earth. What is the magnitude cs : 6u(.u++w ivvbp.szd ouw,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 object’s velocity to increase while it3frpyi1v ee1, s acceleration decreasesry3 1,vi1eefp ?

  00.11: A certain particll4tk5: dkxggl ./uw /ie undergoes erratic motion. At every point in its motion, the direction glu lk.4i://gw5x tdkof the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a sdh. oydt 3cos. qy8: r7ukvc)bo h4(b1tring held by a person. The person pulls on the string uniformly accelerating the block upward for a shob(.hhqdbok1os 3ct.y)uc4 : 7r 8dv yort 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 syb6yv/6:m3:go/k6+me/ xqvbgr w i idituations is the net force constantly zero on thwi6q:vdmggy:kb6+//3 oirxeb v 6m/ye object?

  13.28: An object is in free fall close to the ground. A person intervenes and z.) 1pfkj -st4 f-g54xnon:se 6d ffpv/k7xju 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-d6pnn. )stexz 4xjofk7p5sjv4 kgf1fu- /f: 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 forcesewfzo5. dj firdo r5.,-o5l u/, F1 of 30 N, F2 of 50 N, and F3 of /d .o ej5 .rrzl5 fo-wodui,f570 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 combinc/n3899*w iuxo vmqrc e to form a resultant with a magnitudeqmcco*wu/nx938vi9 r of which of the following

  10.06: Which of the following statements is m*5jj /ie0u 2c f2fxjjzost closely associated with Newton’s Third La52cjfj* f zxji0jeu2/w of Motion?

  95.06: The reaction force does *ci-fjwynp+b:m fny7mv d/ 3w2uc v4;not cancel the action force because:

  14.14: A box rests on the floor of an elevator. The elevator is9eo c(zsf 4ygi4iy s2) accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational yfysesg4) oi i2zc94(force acting on the box by the Earth?

  15.15: A skydiver falls downward through the air wa9n1yf 51horf kdk+3uf0;m qmith constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistanh1+ fm1k mao95y ff30qunkdr ;ce acting on the skydiver during the fall?

  06.08: A baseball is thrown by a pitcher with e + jorl,wmurt4w4.m uln;h41a speed of 35 m/s. The batterswings and hits the 41ww, hlrol rjm m4e;u+u4.ntball. The magnitude of the force that the ball exerts on the bat is always

  11.13: A physics book sits at rest on a table. On.j86ifx;x iao m;wx nrw g5)3i top of the book is a calculator, also at rest. Which one of the following choices is the Newton’s Third Law pair force to the force that the table exerts on the b.xw n oxrfi6am;3j i5w)g;x8iook?

  05.06: The students in a Physics I class were in lab conducting andk cnle +78k9i experiment related to Newton'sc9 8e kli7dkn+ Second Law. The collected data were displayed on the graph at the right. From this graph, what conclusions can the students make?

  99.03: If the net forceo 4t8a 8psgw+u on an object were doubled while at the same time the mass of the object was halved,then the g8a8wu4 o+p stacceleration of the object is

  96.15: A car whose mass 1+1 ujjgncli 5inpn l0+0oz e5is 1500 kg is accelerated uniformly from rest to a speed of 20 m/s in 10s. The magnitude of the net force accelera o+p 1ln eni0z0iln5uj+c5g1j ting the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass of t2zbo()-o0f ei, z4uko oi vg4yhe trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the traileof20,zi (yo4vgouk4-be)z oir applies on the tractor is

  99.16: Which of the following principles best explains why large tractor-t(y( u4,nwl; .djwbg3 juq. vsgbt/t 25isz6i frailer trucks generally accelerate much more slowly that autonf u w,g;w(qjgji dl6.43bt5 ty.izsu2bs(v/ mobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink thr*xp8;me uqasxmw 3tnn * leh z1v2-4z7ows a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement d nq8s;a7m1exzv2 t *4-*nmzweulhx3pescribes the subsequent motion?

  00.13: An object near the surface 3.rptbqi gzsggj q;y.9 -n,c2 of the earth with a weight of 100 newtons is acceb9c3q2sz yr .;g,-igjg . pqtnlerated 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 consta s4f xjhhtcqc,.6a *5tnt force of 2400 N. What is the speed of the car 8.0 s after b5 a hjf4qt6cscxht.*,eginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a rough h:zprj8 0 :1um5 l/v pnflqxc;lorizontal floor before coming to rest. The frictional force acting on the b;r jq 1pp zm0:ulnx:/fl c8vl5lock 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 r ii6 ( ;r,kz- 0rhl: 4zjz+dx zwt(l1,jouetinough horizontal floor before coming to rest. The coefficient of friction ish ri(0en1kizzzw, jr l: ,tx -;(6to idzu+jl4:

  09.21: A 20.0 kg box remains at rest on a horizontal c 6r-gjwwxw 2,surface while a person pushes directly to the right on the box wwg w x6-,c2wrjith 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/7ooy7 qcn/d:0 n,td/idju 8c6 lo syl6s accelerates uniformly to rest on a horizontal surface. The block travels a distance of 12.0 m during the slide. Which one of thecsuy67q6 n80d7lldd/:oc , o/ yitnoj 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 wip- ;ns/z( swev+d8bteth its brakes locked. It then hits dry pavement and skids to a stop in a d-+e bvpns( 8/ews;tzdistanced. The 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 patch of ice hxx 8;umm 3-4pp.srolj r 0nucq:b:f/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 and the dmjo u /r.s4:u xrxc :-m p0qlfhpn38;bry 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 yt83z6g68j q(eo tfni the car's brakes ygt 8663ito(efjq 8z nand skidding 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 mb,mbhq8 y)cpj;( : 0ea(rbyyvust carefully control each of the following devices. Which(ebjy;(8mycryv :qb,b)ha 0 p of these 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 rocketvvis((3+ n5ul 85yk 4hqhds yk with a weight of 15000 newtons is 24000 newtons. About how d5 v+q(3 sn5vhui4ysl (8ykhk much 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 the right across a horizontal floor. A per;zvrn./f *1;h2u *fcwfv zaks0fd-kiux z;h :son called Ted exerts a force T to the right on the box. A uvh-k f.;nwx1az hff;r;z*:i0sk2d f v uz c*/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 forces exerted on the box.

  02.27: The diagram belowi v4on xw43f0k shows three roller coaster tracks of equal length. Assume that on all tracks the roller coasteixfon443 k0vwr 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 tracks of equ2r6)x h klbi 5vd:mo9wal length. Assume that on all tracks the roller coas5l9)h2 kox6vdbwr i m: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 reach the finish first?

  02.29: Assume the rollercoaster cartrolls frictionlessly along thetv6l5sknj, 9tcit 6k2 curved track from point A to pointtjt ,ink stv k95c266l 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 is dragged ax5cdc7rt p);gcross 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 kinetic friction between the box and the floor if a 25gd5;c p r)xt7c0 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 againszqzw*o /j j9v/t a wall by a 100 N force as shown. Thecoefficient of kinetic fric zowj zvq9j/*/tion 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 mower across a horizontal pgjc7 d(z ahg2.cm. )r.aog 8;9u*ovlgrv.nj uatch 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 mower. Which of the following relationsuo c(d*gv.ajclv rghr;n7a8 . m .u9.)gz2ojg among the various force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a qegtq//s9k*n; 3fm slcrate on a table. Neither is moving. Which of the following stafs//q*slk ;meq 9ng3t tements concerning this situation is CORRECT?

  06.15: A crate of toys remains at r:c dj 6.i6c*fif/iwxu est on a sleigh as the sleigh is pulled up a hill 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 hi6jiif i*/ccuwf x. 6d:ll?