99.36: What happens to the inertia of an object when its velab 0hhx 24vi8: ow*prcocity is doubled?

  02.14: An intrinsic property of matter is onea6 sk 8:nwz;4t1f* p-vorkpz y that does not depend on the quantity of matter present. Which of the following prop6 -kkz48y; :1*wrz t spfavnoperties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume the E9z;pu4cx c z z-f6d0ksarth has mxku d cc40z;f-z 96szpass $5.98 \times 10^{24} \; kg$ 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. jr/vlb8)d ivwal0:8q38bxqy What is the magnitude of thevr8qjl: 8q/)0w b3 vax8byl id 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 its acceleratio.q173p3qckl9 d oqs e2xsfai*n de 2qqkscfd.31lp7e si9qxao 3 *creases?

  00.11: A certain particle unk4,ryj/ynaaw- p( 9akdergoes erratic motion. At every point in its motion, the direction of the pa4 -ayp/yjwaak, (rn 9krticle’s momentum is ALWAYS

  17.14: A block is suspended in the air at thnl *ug,0 -xkroe end of 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 following choices correctly identifies the Newton’s Third Law pair force to the force of the string on the block,kx-u*go rl 0n?

  07.18: In which one of the following situationsmg61me erj lqr v3+82e is the net force constantly zero on the object+eemqjvrm612eglr 38 ?

  13.28: An object is in free fall close to the ground. 1k ahvs*p2t1kA 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 from gravity is g.v1psk 1tk* ah2

  98.03: An object in eqa8g e6q+l05elv pdxj-uilibrium has three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitude of the resultant ofF1 and6 xavpejl0e+g58 qld - F2 is

  01.07: A force of 6 Newtons and a fd;oey3 e+dv(jorce of 10 newtons can be combine to form a resultant with a may(v;+j3dde eognitude of which of the following

  10.06: Which of the folzp63f xij9-;lug kq v/lowing statements is most closely associated with Newton’s Third Law l-qvfjk;3 9/ixzupg6of Motion?

  95.06: The reaction force do-fn(zq+ jm:hq;r n4dyes not cancel the action force because:

  14.14: A box rests on the floor of an elevator. The elevator is accekfd3e+dhzt i b8-n)d(o62g g rlerating upward. Which8khn6)zdbd 2 3+e fdgri gt(-o one of the following 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 deia3q /u,j oq*q,h1 qzownward through the air with constant speed. Which one of the1aoqqu, j3qq*/ez,h i following choices 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 of4.c kiz5rq );ampqw3v-st x n+ 35 m/s. The batterswings and hits the ball. k 5tc)z4+min- aw3xqsqpv.;r The magnitude of the force that the ball exerts on the bat is always

  11.13: A physics book svx6,vu gojau+ sw ;;q7its at rest on a table. On 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 book7 o+j6wu;x uqv ,vga;s?

  05.06: The students in a Physics I class were in lab conductingac pws ,7hav5po8h 2l. an experiment related to Newton's Second Law. The collected data were displayed on the graph at theaocw.sap l8vh2h7 ,5p right. From this graph, what conclusions can the students make?

  99.03: If the net force on an object were doubled while at t;54zjxwqbhziz / w7 p+2ka8bxhe same time the mass of the object was halved,then the baw+85 xb4zij xhkz; w7z p2/qacceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly from rgdf,ajaye:--pybta+2 dn o2 0est to a speed of 20 m/s in 10 p0yd -dy ajgao:ean2b- f,t+2s. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mqqzpcs3ecj..up,n y q91n. d- ass of the trailer is 4 times the masy,en qj9u.c p1 .cq3s-qz.pdn s 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 trac +:i/+ oktby;k)tk cvwtor-trailer trucks generally accelerate much more slowly kwci/v;kyb+ok)t+ : tthat automobiles?

  99.19: A 50 kilogram skater at rest on a frictionlessc/m p .suvo)h- fs).hr rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement describes the subsequentmo/-hs) p . hf).usrvc motion?

  00.13: An object near the surface of the earth with a weight of 100 newtons if5)lq ;gtj -qxs accelerategjq)-fq5 t;xl d at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 h+ovg fbn5b/b5t 06jdp0)jyikg is accelerated from rest by a constant force of 2400 N. 0ih/p+gdbb0) noj5jft 65vbyWhat is the speed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slid,rv sx7mnn8 6ses across a rough horizontal floor before coming to rest. The frictional force acting on the block is 3.0 N. How far does the blocn vsrxs8 n7m6,k slide before coming to rest?

  95.38: A block with initial velocity 4.0 m/s s1i. s daqa,lc1s 8*pczasnk 5se/6g:olides 8.0 m across a rough horizontal floor before coming to rest. The coefficient of frictiokl:z1e61i a5s c ./ c sa*npdg8qssao,n is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface wbbjfi (5;:r) blv2cz ohile a person pushes directly to the right on the box with a force of 60N. The coefficient of kilfc)bv ojb ;zb: 2(ri5netic 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 y7ckh: 5xqus k32t5(itc1)ph-ztay iaccelerates 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 repres ti(p2 7:h15)ts5cytc-i yazu h3 kxqkents 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 with its bbsr*g+sxq0i4e+ h0d(ucngm 3 rakes 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 rocmdgen4r xh( bq*+00is 3 +usgad 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 itsiqfc dysbojb (w+54e.qip3* . brakes locked. It then hits dry pavement and skids to a stopj q os*b(i eq3i.d5p.f cyb4+w 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 the car' 0 cn;/zaj*yn:, scsjjs brakes and skidding to a stop. How far would the car have skidded if in ,ys0sc :/jj;ajczn*t had been traveling twice as fast?

  99.39: The driver of an automobile must carefulxk ydt6fnd*1y iv(*v; ly control each of the following devices. Which of these yti6; nvf*1(* kyvddxdevices 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 15000 newtons is 24000 newtxl5t8h9-di8x v ws o)lons. About how much time is needed to increase the rocket ’ speed from 12 m/s to i8-9)5 t xslxdv8wo lh36 m/s near the surface of the Earth at takeoff?

  07.21: A box slides to the right across:w trlm l2:+h1wau 9uw a horizontal floor. A person called Ted exerts a force T to the right on the box. A person lmru2 al9t:w+uw1 :hw 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 below shows three roller coaster tracks of equal lencm p(z5bzqlkka1 tk71 xax8g26;bb6x gth. Assume that on all tracks the roller coaster carts start fro(2;xpkmbzb71x6 8tkag5ab6lzckx1 qm 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 equal lenf0op(1 l w193 onzvlcigth. Assume that on all tracks the roller coaster carts start from res1fl39p0c o inzvow1l(t 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 the curved tra5,k-z y9ml6d dvlzjr)77))pdo2 x bojbwevx,ck from point A to point C under the influenw), zer79mv ) zxj dyd,)bo 6bpdljkl-xv72o5ce of gravity. What would be the direction of the cart's acceleration at point

  02.40: A box with a mu-ml. q2sipf/kjx7 * pass of 50 kg is dragged across the floor by a rope which makes an angle of 300 with the horizo.*2f/qkmpjixpu7ls - ntal. Which of the following 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 iripv v4,)1u jru e(k0zr4p ,whs pushed against a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of static friction is 0.50. What is true of the friction acting on the block after a time of 1 secohu4ievpu4 r, k1w0,)zvpjr (rnd?

  05.10: A homeowner pushes a lawn mower across a horizontal patch of grs.2 /g59tefm kxgx6cvass with a constant speed by applying a force P. The arrows in t f gcvgxmk.5xe/9s26t he diagram correctly indicate the directions but 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. Nvn dny vg.4t*3either is moving. Which of the following statements concerning this situation is CORg 4v3d*t ynnv.RECT?

  06.15: A crate of toys remains at rest on a sleigh as )a mbw86mff,;h8f ych 2br9uqthe 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 spe2hrfumb9; h8 fcafy )w,6bq8medup the hill?