99.36: What happens to the inertia of an object when its velocyfvh5* vq6u (zbrzp+nql +:l*ity is doubled?

  02.14: An intrinsic property of matter is one that does:(t wmu;q px-y not depend on the quantity of matter present. Which of the following properwu;pt(- xq:ym ties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume the Earth hpuju p6q34 su1as mu1jqu4u3pp6 sass $5.98 \times 10^{24} \; kg$ 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 n:6gq0 ixg2s cmear the surface of the Earth. What is the magnitude of the gravitational force acting on the earth by the sphere? 6:2gms 0 ixgqcThe Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to increase while its a28grlf wk0 brst/(b- )0l hv vu/x a..g*oyyjxcceleration d)u2 /v/fh*0 0vgl xw( 8-bxr agtors..jyykblecreases?

  00.11: A certain particle undergoes erratic motion. At7;dgq 09q /a 4-jvxbp gx 65x-a,x+yldmmqzy z every point in its motion, the direction of the particle’s momd9 y6/x4axz yq xq,z-pm;gb5 ja g0qdvxl7+-mentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string held by a person.casn 9 l9) jjfssql30i0e* s0g The person pulls on the string uniformly accelerating the block upward for a short time. During this time, which one of the following choicessfe9i l)s03*sn0 l g90qj csaj 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 newrnj6 u e9pd blb,d;7a;b7va( t force constantly zero on the v7bp eu ;da9( 7jnb,awdbr; 6lobject?

  13.28: An object is in free fall close to the ground. A person interven*5x mcgl/8 cwnes and slows the object uniformly to rest. Which one of the following statements must be true about the magnitude ofgn x/*c58mlc w 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 equilibrium has three forces, F1 of 30 N9m.8ba fji wn pic/-:y) nnv/w, F2 of 50 N, and F3 of 70 N, acting on it. The magnitude of the resultant ofF1 and nw/wyc bn: ni8i-)mfajp 9 v./F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can be combjwra5p)nky, ) z).mgline to form a resultant with a magnitude of which of the m j5yr)p.w nkgal, z))following

  10.06: Which of the following statements is most closely associ 4 (ii1vjv d-f4c3coijated with Newton’s Third Law of Motionf4ovv-i4 ( cj1ic3 dji?

  95.06: The reaction force does not cancel the action forcq i b fg,jp0lm;)p1b6re because:

  14.14: A box rests on the floor of an elevator. The elevator is a6;vu pc zy4 0p)l qswbcz5:om4o3xq1wccelerating upward. Which one of the following choices 4zcp6c; ) z:vwpqs 1 3q4xlmuo5bywo0 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 downde;k rjl4zi01ub- *k oward through the air with constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the ak r4kb *e-lu1i;0jzdoir resistance acting on the skydiver during the fall?

  06.08: A baseball isn/vkn31n s n co8i3pqmg)a+ o- thrown by a pitcher with a speed of 35 m/s. The batterswings and hits the ball. The magnitude of the force that the ball exerts on the bat is gkn/ )o8pcnais +m -n13o v3qnalways

  11.13: A physics book sits at rest on a table. On top of the book k0su xkm05hl xn1,zq)vo2d1bkx f p*) is a calculator, also at rest. Which one of the following choices is the Newton’s Third Law pair force to the1kk0 b lx),xzku5 mxh1* 0vp qdo2f)sn force that the table exerts on the book?

  05.06: The students in a Physics I class were in lab conducting an exjj-.9i1os4q dsf/wqmrjoux * 7p. sy0periment related to Newton's Second Law. The collected data were displayed on the graph at the right. From this graph, what conclyj *qr/qj-sumf 0ss 4 w1o ij7ox.p.d9usions can the students make?

  99.03: If the net force on an object were doubled while at the same time the ma :*imvi9rgm y8w 2kdphty6:0jss of the object was halved,th pmkh96gd8:y i 2rtvy*:im 0wjen the acceleration of the object is

  96.15: A car whose mass is 1500u.v4zj 2(g lze kg is accelerated uniformly from rest to a speed .4z ulevj g(z2of 20 m/s in 10s. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is tc gn46;*vkvyl raveling down the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forwv * ;k4ncgvl6yard, the force that the trailer applies on the tractor is

  99.16: Which of the following principles besfis :6z oj17puyvp/m0t explains why large tractor-trailer trucks generally acceleratspi7m 6 1zf yp/0jo:vue much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a 2 kilogram:jxxs1 .rv5hrd;rusr-rms5 crq -n , / ball, giving the ball a velocity of 10.0 .5r5,r- snrq:x;1s xju / - vchrrrsmdm/s. Which statement describes the subsequent motion?

  00.13: An object near the surface of the earth with a weight of 100 newbmt8 cvnc*4)3teib+v9z l r6ktons is acceleecrt9iz8 36 *n m)k4+lbtcbvv rated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 ki;mmmr2:0hc jx: f. ubg is accelerated from rest by a constant force of 2400 N. What 0f :um2mir:.bc h jxm;is the speed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 vjsu,+g2/ /-s nze)ictra jm5m/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 before c+52ijrc /u a)vsz/jt gm,- nseoming to rest?

  95.38: A block with initial velocity 4.0 m/s slides 8.0 m acr,i6a)ufcalhmvs scrf 6pgd;uz 3 62 5ks(3xb 0oss a rough horizontal floor before coming tolf 3x60sc;)s(3cf6rzbuus h ,mvd6ap5ga2 i k rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a person pus dh zn evo6dwj/(aj268hes directly to the right on the box with a /(2nje owj8az d6v h6dforce 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 acce/ x3 qp.)ndj d9ya xoas6nx,x-lerates uniformly to rest on a horizxqos9 p-,nd)axyxn x /.adj 63ontal 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 block?

  00.21: A car of mass m slides across a patch of ice at a speed v wi*af1j 2bor o;qth its brakes locked. It then hits dry pavement ao;j bf*oq1r2and 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 qgz*q u7t-wt2 m slides across a patch of ice at a speed v with its brakes lz q7u ttq2w-*gocked. It then 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 speed of 2v, it would have skidded a distance of

  04.32: he driver of a ce*ae; cq/b5psly 3hmv4,n8b8p xm;dnar makes an emergency 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 twice a yv;sa3xb nhe8l4m /p*qc8nem5 d;,pbs fast?

  99.39: The driver of an automotpbv:. k;o0 eobile must carefully control each of the following devices. Which of these devices can cause an acceleration in a moving ca .veto ko0b:p;r?
(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 is2* ep zdym/d9rmob4 hq-6y vlh+fb3- j 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36 m/s near the surface o4qf2b pz-d*mhyme+ 6o9jdh rlvy 3- b/f the Earth at takeoff?

  07.21: A box slides to the right across a horizt )ni5bqhq, pvmfz.jcods / / -:kzvv( 3z4,dlontal 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. Given that there is friction f and the box accelerates to the right, rank the sizes of these three f) qi, /-5zpho.nkbsc:v(q,z v /l jftd4 mzdv3orces exerted on the box.

  02.27: The diagram below shows three roller coaster tracks of equal length. A,.ah) *np4.grxwdvo9 s. howrssume that on all tracks the roller coash.w pvx.a.*sg,4n9 rwod hr )oter 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 coo 3fh6+ pk++(n)f)vp;yojf pow8b pbj aster tracks of equal length. Assume that on all tracks the roller coaste 6pjvhwk3 ;f8+ np) bof+)po+(bjf pyor 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 .1d+(ex0kh fu mzm,authe curved track from point A to poin1 emux,md( zau. f+hk0t 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 whgnz-3awlz q 6j )vp4b8tx /;-a /yqogbich 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 250 newton force on the rope is required to move the crate at a constant speed of 20 m/s as showgql 6ajw-vn3; zb4tg q ya)z-/o8xp/b n in the diagram?

  04.40: A 6.0 kg block initially at rest is pushed against a wall by a 100 N fork wz gotsg3:* nosf/(:ce as shown. Thecoefficient of kinetic friction is g3g:to:s (fnz/o sk*w0.30 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 horizont-jd )6ny6bryp al patch of grass with a constant speed by applying a force P. The arrows in the diagram correctly iny-rb )6ydpj 6ndicate 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 creeor e.)u has68g:7 xtate on a table. Neither is moving. Which of the following statements concerning this situation is C 6 )u7st8:.eoghxreaeORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is pulled up 6a5m ze45pu ooir:w-aa hill with an increasing speed. The crate is not fastened down to the sleigh. Wow-5 mu4o5e i6:rzaaphat force is responsible for the crate’s increase in speedup the hill?