99.36: What happens to the inertia of an obvtll7; usw(5i bf2b- rject when its velocity is doubled?

  02.14: An intrinsic property of matter is one +, .zy lrevj iyywu0/eu;de7(:ci5wsthat does not depend on the quantity of matter present. Which of the following properties is NOT avc.0uiwyz;r sy,(e:+u le i e y5wjd7/n intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth.u g:ud spadd2f;: m:)i Assume the Earth has mas2 :puiasgd duf)d::m; s $5.98 \times 10^{24} \; kg$ 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 is4:imo6a kj/ w5ep mo6v the magnitudoi:k5a4pmm w66o/ v jee 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 increiklc vy7k8q+4 vice:cnx/8q1ase while its acceleration decreas8k8cxi 7kv e+cy:/c4q qvi n1les?

  00.11: A certain particle undergoes erratic motion. At every point n m13 dg2 pq ::x,2:tcwzsrnctin its motion, the direction of ttpdq2 :,c3nx: c sr2:g1mnzwthe particle’s momentum is ALWAYS

  17.14: A block is suspended in tbow-kvt5v*w 3 he air at the 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 t-k5w 3vbtov*whe 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 ov8 d9r nv(o:ejf the following situations is the net force constantly zero on the obv e nv98or:(jdject?

  13.28: An object is in free faxv9 ( ;5h hlnmfwtv7*pll close to the ground. 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 x flv (;nth7hwm5v9*pis 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 equilibrium hd/ me5dy+nn:-i5s glcas three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting sn e5nd dgi+5c:y-m l/on it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons an p8/ *jxgsni2osv)e4ud a force of 10 newtons can be combine to form a resultansvon 2ig8j)su*4ep /x t with a magnitude of which of the following

  10.06: Which of the following statements is .5xmo/ l5tosx most closely associated with Newton’s Third Law o5lxoxot m /5s.f Motion?

  95.06: The reaction f,y n4*snu6le 1u) rcb,m 7pvwlorce does not cancel the action force because:

  14.14: A box rests on the floor of an elevator. The elevator is acceleauz8 ( /cf lu-ogm )xz354qkx37ahcibrating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational force acting on the box b mx4zq/5hak73(ug z3fcb8axulci )-oy the Earth?

  15.15: A skydiver falls downward thrm7d t)q,0m7e bvupcw+ f9.zrrough the air with constant speed. Which one of the fo)7cte qfdmu 9mp vwrz. r7,b0+llowing 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 of 35 m/s. f h9v9ups6mi t y6ahmgca(,* .pn3a-y The batterswings and hits the ball. The magnitude of the force that the ball exer9(3u s yn aa9-y*ifp6pm, .chhv6atgm ts on the bat is always

  11.13: A physics book sits at rest on a table. On tophri8hlyh4cx e,:8z7 v 61kmea of the book is a calculator, also at rest. Which one of the following choices is the vla4 i7e8 hez8y6k:chh1m xr, Newton’s Third Law pair force to the force that the table exerts on the book?

  05.06: The students in a Physics I clai* yr-a ik0ykj:04y +u:rzfxc ss were in lab conducting an experiment related to New rxirz f4-i:y+ :k j0*akuyy0cton'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 an object werb7r ha3;kv ay;e doubled while at the same time the mass of the object was halved,then the acceleration of the object ;v3k7ah ba;yr is

  96.15: A car whose mass is 1500 kg is accelerated uniformly from rest to a spfbkfvs1 n09 v6z3cz 3beed of 20 m/s in 10s. The magnitude of the net force accele90z3v f1f6 z3nvbbsck rating the car is:

  99.05: A tractor-trailer truck is traveling down t xatpiy )*wtx9 3q-((evxup r9he road. The mass of the trailer isprwyaxpxq 9t-u*ve 3x i9()(t 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 princiwjew 38lm.im 1l2 td2i(g8 a6l6lsp tzples best explains why large tractor-trailer trucks generally accelerate much more slowl j8 mig 3wlm8z2w2a i1ll6.t6lp( sdtey that automobiles?

  99.19: A 50 kilogram skater at rest ;vsa;j c+ kwv2rv.9;zag3g ci on a frictionless rink throws a 2 kilogram ball, giving the g.rva;ska cgj+w z ;c9v ;2vi3ball a velocity 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 100 newtons ic ;rc2o,jw pf 0xn.q;as accec.j02xporf;c na, ;w qlerated 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 constan c :.k3vtzo;fqhvs7-rvrz g6-t force of 2400 N.3sg.;rv7z6vvq-orfh t zk- : c What is the speed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initias jpqf6 8j u)v0plbw(k 2iph47l speed 4.0 m/s slides across a rough horizontal floor before coming to rest. The frictional force acting on the block is 3.0 N. How far does the block slide before6w qpj b8lfu7j42 (pi0hpsvk) coming to rest?

  95.38: A block with initiahrym j:t3ie q-r*gv ot8)jj66l velocity 4.0 m/s slides 8.0 m across a rough horizontal floor before coming vte:myj6 -r3rog8 *tqhijj6) to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface whil5rd/ t 5o y7/( x9bjka(upknletwpt9-e a person pushes directly to the right on thek/kb95 w-p(a eljut 9(o75 rpty/xtdn 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 unjof0 -p.l;7l a y;u 7nh4k ly(uxgegf)iformly 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 represents the coefficient of kinetic friction between the surface and the blo)g47 f. ga-lehyfxo (upn; 0jlky u;l7ck?

  00.21: A car of mass m slides across a patch of ice at a speed v with its btic 0 r.8oare,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 raci.o 8r,et0 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 at a speed v with its brake xga ux/9vr7zj/t )n ypsl144ts locked. It then hits dry pavement and skids to a stop in a distanv s1yrlzx a4x74/n/9)ptt g ujced. 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 /ciwjooa:3q) 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 t wjqao3)cio:/wice as fast?

  99.39: The driver of an automobile must carefully contm;3r d0mxy9 vv(ps0+xrz boa 3rol each of the following devices. Which of these dexmr 3a;zv+0rmp(3s xb0y9 vdovices 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 :b2c1n(fl x tq9)gul 9eu3 vwowith a weight of 15000 newtons is 24000 newtons. About how much time is needed to increase the rocket ’ speedg:12 e3wbl)uxc (tn9v9l ofuq from 12 m/s to 36 m/s near the surface of the Earth at takeoff?

  07.21: A box slides to the right across6lh ohu/ dsc;cs pisnm*40jh;tw8 q-* a horizontal floor. A person called Ted exerts a force T to the right on the box. A person called Mario exerts a t;wus6 hcqh-*l j8n/0idcoh m s s*4;pforce 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 sh q3dd9 np, fsr4d qn8uxca2jzfz9 21q2ows three roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start f94cdnuz fx2 p1 3j,2qq 9qdf zsnad2r8rom 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 length. A j) 5orv0a19i2zewugnssume that on all tracks the roller coast0vn erwj1)2ao gi9 u5zer 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 fricqo, 7n tl+; w 7nnhzejo4um6x(tionlessly along the curved track from pointq wun,jn nlx7 7;+t m(4oheo6z 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 is dragged across the floor by (twclsq(o;m zl5e51 q/guaa 2a rope which makes an angle of 300 with the horizontal. Which of the following would be closest to the coefficient of kin;ucs(l (ga5l12 wq eo/m5zaqtetic 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 re (piyx(w:wd ))tln8kcst is pushed against a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 wci np:w)xw) ((dkyl8 thile 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 +uy5ih gxmm7wx5*s f(* +zghm lawn mower 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 lawn mower. Which of the following relations among the various force magnitudes, W, f, N, Pz5 xmwg57 xf* gih+u*+s(yhmm is CORRECT?

  06.14: A book leans against a crate on a table. Neither ifzljuq9obi. c eh sxg0 l+ rj44y/1v510yy/sls moving. Which of the foll0o+f. q 91iyjy5ehlg 4ly//x4zurvbscsj l01owing statements concerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh 57xtxj ( 8nufxis pulled up a hill with an increasing speed. The crate is not fastened down to the sleigh. What fxx7xfjt n85u( orce is responsible for the crate’s increase in speedup the hill?