99.36: What happens to the inertia of an object when its velocity ,g(z mq/yb+ttb69q xvis doubled?

  02.14: An intrinsic property of matter is ons0ya )tl30wnne that does not depend on the quantity of matter presn tw a)sy00nl3ent. Which of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder restsuku7sx 2 9e2*qll z:yz on the surface of the Earth. Assume the Earth has masuzlz 7 qe9x*kyu :l22ss $5.98 \times 10^{24} \; kg$ 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 fapus i65x2r l,ill near the surface of the Earth. What is the magnitude of the gravitational force ac i,s26ip5rlux ting 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 u7 f0dsf:g b)dydba,)9 4pxg yits acceleration decreasessdbyd9du f 7 xgf4b )p)a,0yg:?

  00.11: A certain particle undergoes erratic motion. At every poine*,dh vc4c( bw 0s;bont in its motion, the direction of the particle’s momentum is ALW4cs,h w;odb0n *vb(ce AYS

  17.14: A block is suspended in the air atdx7gzl vi71 r. the end of a string held by a person. The person pulls on the string uniformly accelerating the block upward for a short time. zrg7l1dv7 i.x 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 situations is the net force constantly z/nv+n3 *rijskd)v 5cpero onpv* n3 k5n/d c+rjiv)s the object?

  13.28: An object is in free fall uy)n -qmu;oj9+ cuaka6, 8y qiclose to the ground. A person intervenes and slows the object uniformly to rest. Which one of the foo + n)m;aaj u-9 c6,uyy8kqquillowing 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 eqz;d(*np )xyisuilibrium has three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The;dsxzn*y) i(p magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can be combine to form fltfz+ /1s a)oa resultaofs/f l z)+1tant with a magnitude of which of the following

  10.06: Which of the following statements is mos)iacix+ jh 8ff;60 svit closely associated with Newton’s Third Law of Mot i+cjxhis;8f 6vi)0 faion?

  95.06: The reaction force does not cancel the action force b rkulsq131c3bd4 ,;utd0sc o hqvah53 ecause:

  14.14: A box rests on the floor of an elevator. The elevator is accelerating upwxj3 9tsix/ m(0 a1bwvrard. Which one of the following choir/t a9sxv1(xm ij0wb 3ces 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 speed. *jleg kv;k6z, smm; )jWhich one of the following choices correctly describes the Newton’s Third Law pair force to the air resistancs gv*;ke;jl,k)6 zmmje acting on the skydiver during the fall?

  06.08: A baseball is thrown by a pitcher with a speed of 35 m/-wn,n:+sb cwns. The batterswings and hits -n, b+nw:wcns the ball. The magnitude of the force that the ball exerts on the bat is always

  11.13: A physics book sits at rest on a ctxe/t2r81eo 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 ex28/t cr1oteexerts on the book?

  05.06: The students in a Physics I class were in lab conductid k:owy 89a5flng an experiment relateda9k5: 8 lydowf to Newton's 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 force on a fq6l)2:p2ghrdwbeb7 n object were doubled while at the same time the mass of thdq w2p2 f6bghe7rb:) le object was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 ko3tjg)b1 wk*hg is accelerated uniformly from rest to a speed of 20 m/s1 3 )otgkh*bwj in 10s. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass of theye d) 258cx+ pmmnpc )7pikla8 trailer is 4 times the mas8pk mmd+2x pnec))78ly5a ipcs 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 bes8r;gq kdm vyvwpt:pe ;33b/w:t explains why large tractor-trailer trucks generally accelerate much more slor t/3; m w8pqkpy:vb3e:vd;gw wly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a 2 kilogram zs nerc) p, i (ah4qh2:; jdio;jsdzif*.u;;sball, giving the balhh4 n c jzejaidi q;,;uspfod.;i:; *s2zr s)(l a velocity of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surfl.8py c.rng:5n(a.c q0tdrar ace of the earth with a weight of 100 newtons is accelr g pr :d5a..08t.lrn c(qayncerated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg i ny:i8 4du.dthw6 c9.gj8yqk q yqk1;ys accelerated from rest by a constant force of 2400 N. Wha gn;c.y8q1d 6iqj w:9k k4dytu.yh8yqt 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 sli4jpb3o 9dem1i zcwt gcvj*7)(des across a rough horizontal floor before coming to rest. The frictional force acting on the block is 3.0 N. How far does the cej4(jg i o3t9bwpd7c*mv1)z block slide before coming to rest?

  95.38: A block with initial velocity 4.0 m/s slides 8.0 m across agfw31.ld v+iz 2qfcs, rough horizontal floor before coming t+,z.wl21ci3 qfsvgdf o rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horiz: jlan5 6hw*f i5s-tvvontal surface while a person pushes directly to the right on the box with a force of 60N. The coefficient of kinetic friction between thej5 -t: w vvf*h5lanis6 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 aps1 pisklh 5,2ccelerates uniformly to rest on a horizontal surface. The block 25 slp, hipk1stravels 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 slis4 e3;eidwi zu; a(ws4des across a patch of ice at a speed v with its brakes locked. It then hits dry pavement and skids to a stop in s4;;sai w(ze3die 4uwa distanced. 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 a9qyy glrvq6xj2 b-9;l t a speed v with its brakes locked. It then hits dry pavement andrxqlv;g92- lq9y6j y b 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 anq ez9l 9 1z:rdjy:i7vq emergency stop by slamming on the car's brakes and skidding to a stodzyerqqij :79:z1 vl 9p. How far would the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefuly- 8db)bm q,juof*jlp:7pai /ly control each of the following devices. Which of these devices can cause an accelerib8dq:p)oj bpflj /mau - y,7*ation in a moving car?
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net force on a ro.rgmxcu95 e50ont; w qcket with a weight of 15000 newtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed fenc 95rtm 5;0wq.u gxorom 12 m/s to 36 m/s near the surface of the Earth at takeoff?

  07.21: A box slides to the right across aii s;v;pz ep *g02hfpkt(pb1m35 uk l* 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. Gi;mtp p;z(h*kp15f0* es2lp b vui3ikgven 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 lengtlv dashq, k0nal)z0) v;*gpq.j( -obnh. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly oq;n) 0z0*q )jvhb,goplk.lnasd( v a-ver 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 leng8ovtw94kmyx 7 th. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessl kxym wo9t8v74y 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 t*eajn0i 5,ythc6 yev,bn -t k6he curved track from point A to point C under the influence of gravity. What would be the dkne nytb,y ec0*jaih665- ,t virection of the cart's acceleration at point

  02.40: A box with a mass of 50 kg is dragged across the floor by a rope z.k-qk g bsnijs(; p6,which makes an angle of 300 with the horizontal. Which of the following would g j6b.sipkkn;z-,sq (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 -i u0cv5 1aebw0k+hbs initially at rest is pushed against a wall by a 100 N force as shown.h1 sbkcia+0b-ewv5 u0 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 second?

  05.10: A homeowner pushes a lawn mower across a horizontal d sdn9sd3kres3xz5/ 0patch of grass with a con3e dsrd/kn0 zsx539s dstant 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 relations among the various force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crate on a table. Neither is moving. Which of the7 xu7jzr3h+jd)ep,. jrh nl -n follru +77njdxez,)-jjrh 3l nph.owing statements concerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh 05,j.tiwqebs is pulled up a hill with an increasing speed. The crate is not fastened down to tj,e s bq5wit0.he sleigh. What force is responsible for the crate’s increase in speedup the hill?