99.36: What happens to the inertia of an object when its velocpsn q9 y.e.w3 qiju8s;ity is doubled?

  02.14: An intrinsic property of matter is one that does yd80h2 q:z*pjnm jl n0not depend on the quantity of matter present. Which of the following properties is NOT an intp0: y2hnqz0m 8*jlndjrinsic property?

  04.16: A 20 kg boulder rests os-yf v9ew au8s*+2kwhn the surface of the Earth. Assume the Earth has maa8*e2 yw+v ufwhs9sk-ss $5.98 \times 10^{24} \; kg$ 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 surfmkl9c*fy(z+g 5a 0wev ace of the Earth. What is the magnitude of the gravita 9+ 0flmgz*wky5acev( tional force acting on the earth by the sphere? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for (.zgne1sb7 ci an object’s velocity to increase while its acceleration decreases?.sn (g7iebc1 z

  00.11: A certain particle undergoo(w: jfp th,3tes erratic motion. At every point in its motion, the direction of the(: h fp,t3wjto particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at tf5mf w2 4.iulu+-srtnhe 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 f+iw5t4. -lm2fsuur nof 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 :xd0 fr5z gslaw42(ax cfl7k7the net force constantly zero on the o d0gf 2ca5 xl:x47fk(sazlr w7bject?

  13.28: An object is in free fall close to the wn w/9nrd*0qeground. A person intervenes and slows the object uniformly to rest. Which one of the following statements must be true about the magnitude of the accelera w/r 0qewnd*n9tion 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 equilibrium has three forces, F1 o5bz,ql f3lp neq+ 4)yl* zygf8f 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnzq f34+lefz8pqll )gy5*,y bnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can be combine tfz95 - r,thhpso form a resultant wht rf ,h95-zpsith a magnitude of which of the following

  10.06: Which of the following statemen/syos75dj8-ioa 3xm zts is most closely associated with Newton’s Third Law of Mot35 xzsmosjd7 y8-ia/o ion?

  95.06: The reaction force does not cancel the action force becau-y + mwfna -;bs6xdfv23p ,impse:

  14.14: A box rests on the floor of an elevator. The elevat h1e:a2uhqby n7z .nx3or is accelerating upward. Which one of the following choices best represents the Newton’:e2 anzh1.hu y3bn7xq s Third Law pair force to the gravitational force acting on the box by the Earth?

  15.15: A skydiver fal,1rgq4u nkj8 rls downward through the air with constant speed. Which one of the following choices correctly describes the Newtog 8r14kjqnur, n’s Third Law pair force to the air resistance acting on the skydiver during the fall?

  06.08: A baseball isoi, (*otrsqi + thrown by a pitcher with a speed of 35 m/s. The batterswings and hits the ball. The magnitude of the fitoqr,os i(* +orce that the ball exerts on the bat is always

  11.13: A physics book sits at rest on a table. On toy0 9ot*osr4rx p of the book is a calculator, also at rest. Which one of the following choices is the Newton’s Thirdoot 0rx4y*sr9 Law pair force to the force that the table exerts on the book?

  05.06: The students in a Phzpf-h.h+ llvjod q36 3ysics I class were in lab conducting an experiment related to q jp.- +d3o36hhlfvlz 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 an object were doubled while at thh hm, c81:osrl (b;(avz+pw jje same time the mass of the object was halved,then the acceler;z ljp1hb(8 o+rvwm:a (js,hcation of the object is

  96.15: A car whose m l f5+ rqjk:5f6.jxqbyass is 1500 kg is accelerated uniformly from rest to a speed of 20 m/s in +r.qy5f5q:k f6jlb jx 10s. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck i )w(7n;w:k2nswvmv wp eh s,0ns traveling down the road. The mass of the trailer is 4 times the mass of the tracto,h(en wnwn7kwm 0) v:ps;vsw2 r. If the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best 0 5 brvi.+wbempfu6+ bexplains why large tractor-trailer trucks generally accelerate much more slowly that automobiles+feir0p w bvbm ub.+56?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a 2 kilogra i gqpqg4a4m78ox:fr1m ballgifp784g:rqam 14xqo, giving the ball 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 new.hg;n -/fy nymww+x8v tons is ac+wgv.m-ynf hx;y 8n w/celerated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelern,s5z dhr / 0)pj5lq2g rcywn:ated from rest by a constant force of 2400 N. What is the speed of the car 8.0 s after beginnigh c/5jqrl)5zy pd, wsn02r:n ng?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a rough horiztf mx*e7 tm,v*ontal floor beforev, 7*met fmxt* coming to rest. The frictional force acting on the block is 3.0 N. How far does the block slide before coming to rest?

  95.38: A block with initial velocity 4.0 o ewrosp-yemtvu22mw9 8lfkb:z-fb0 14 y(-w m/s slides 8.0 m across a rough horizontal floor before coming to rest. The coefficient of friy e212w buz(t0om:p --fw4r8yklfowv mebs9-ction is:

  09.21: A 20.0 kg box remains at rest on u,jo 1tr u m tr34dzak.3q(+qja horizontal surface while a person pushes directly to the right on the box with a force of 60N. Thezjud., +atm o 14qq3k3r( rjtu 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 uniformly to rest on a horir+eecxl 9 wiwxq;c5 47zontal 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 friwcwxr q7 ;45lc eeix9+ction between the surface and the block?

  00.21: A car of mass mk etih j,s4ngaw loxk d0bj1,(a /j-w(p6o66j slides across a patch of ice at a speed v with its brakes locked. It thwota, 1 jioap(4,bk6/ j6d(w6h0-gexjjslknen hits dry pavement and 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 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 iy/.ps v 1f+x.zzo9:kla,d) yv g1adb speed v with its brakes locked. It then hits dry a9s+l ) .,zfy1b x.zdkd/iva:ogv1pypavement and 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 an emergency ) n/i7 rbn-/v kasdt8dstop by slamming on the car's brakes and skidding to a stop. How far would the cai /87 t)anrvsd/dkn-b r have skidded if it had been traveling twice as fast?

  99.39: The driver of an au /y )*h2g db1dmklcbof6yy:+gtomobile must carefully control each of the following devices. Which of t2f)6d gyy/:* h1b+oklcygd b mhese 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 rocket with a weight of 15000 newtons is/jrwe y3r )l(gx .ynr3 24000 newtons. About how much time is needed to increase the rocket ’ s.r/gy(yxr3nr)3 jw lepeed from 12 m/s to 36 m/s near the surface of the Earth at takeoff?

  07.21: A box slides to the right acrowl dsm8w*6 d-qss a horizontal floor. A person called Ted exerts a force T to the right on the box. A person * -ls6 d8dmwwqcalled 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 ibep4f- 3 3mkra1.rz1zzp s-ethree roller coaster tracks of equal length. Assume that on3-11f4rspzeaire zpzk .- b 3m all tracks the roller 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 coasteh6abm76o e;pbb: 4 au0zkul-4xon d5sr tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevb7 msbp;-ula h 65 d4nbkz 0e4xuo:o6aation 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 roll( l4m:;fxvt(l xbk2ltercoaster cartrolls frictionlessly along the curved track from 42txfk( lv mtl(lx;:bpoint 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 a rope which mar/;gc6w i a.:wk75j ,wxmkk2m xa,nqxkes 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 250 newton force on the rope is required to move the crate at ix a;/k 7 nxw,j,q6.w 5x:mackmr k2wga constant speed of 20 m/s as shown in the diagram?

  04.40: A 6.0 kg block initially at rest idlom-vor ewdiu u 0c*- ()(n69cs7mj ss pushed against a wall by a 100 N force as shown.-j6(d0ord9 uuws o7(cm) -ci es*vmln 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 acrossf7j 1tzd,eh /my*-m lv 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 necessam /z,hdj mtvy*71le f-rily 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 6 mazzd4 5p/hnzq/u-iis moving. Which of the following statemenuzd p-h/64/z n5zaqimts concerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh aszlr zc:vq94s * the sleigh is pulled up a hill with an increasing speed. The crate is not fastened down to thelz4: q *sc9rvz sleigh. What force is responsible for the crate’s increase in speedup the hill?