99.36: What happens to the inertia of an object when its veloy41n-lusbv2+ejn p m4x0ov1c city is doubled?

  02.14: An intrinsic property of matter is one that does noruj 6gtej7*7 wt depend on the quantity of matter present. Which of the following properties is NOT an intrinsic propertyugrwe77t6 j *j?

  04.16: A 20 kg boulder rests on the suutj .:63dhdev77pp x:2mg ibfrface of the Earth. Assume the Earth has mai 7.g7 hbjde vpp2:f3 u6:dtxmss $5.98 \times 10^{24} \; kg$ 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 oflsdn::g ,/ lfwouqd70 the Earth. What is the magnitude of the gravitatiododf70 q,: uwsgn: l/lnal 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 h v ha,5 ip .x*dmyu-f0*6kwwtincrease while its accelerationk-it hwa5*hfmd6*,v uy pxw.0 decreases?

  00.11: A certain particle 7bs,7yrw xwuu .dn6b4undergoes erratic motion. At every point in its motion, the dire s7w6d x.uybnr4,bw7 uction of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the ada; zxka:0 w.cbx2iw3;w( kf j86*e :qbrednend of a string held by a person. The person pulls on the string uniformly accelerating the block upward for a short time. During this timzwi w3;a b :e(;0a.ba*fdqxc2x8ke6jd r n:kw e, 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 8o8nxxr(: z7+n gb9hrznx,cqzero on the obje :8 rcnznxgr7qn,o8xz9+(b hx ct?

  13.28: An object is in free fall clos n(rw)wn* fdbp 3k)p-oh9gm, ve 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 is being stopped by the person? The magnitude of the object’s acceleration is a and the magnitude of the acceleratim(pd)9*h nrbok wp,ngf-w)v3 on from gravity is g.

  98.03: An object in equilibc:1qt/oj qm k)c c)t:irium has three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitude of the resul)jc/)qmtcko1i :q ct :tant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can be combine to fomg ;os sl..1j2mfnu8wrm a resultant with a magnitude of which of the follo2 n.uw. 8mmojs1gs lf;wing

  10.06: Which of the foe kn6)u55a heallowing statements is most closely associated with Newton’s Th)e5kh5e u a6naird Law of Motion?

  95.06: The reaction force does not cancel the action force because:91fdrg lk2gmbacl:0v-bpo g .gg qf **;wfa( 7

  14.14: A box rests on the floor of an elevator. The elevator ir*z37 (tdohw( rrs e:5xv8ypv4 nos(xs accelerating upward. Which one of the following choices best repr wrvsdxz3: rt xphr y87so*5(o(v4e(nesents 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 spr ()kx /+akzhn)-qe8vl0laiseed. Which one of the following choices correctly describes the Newton’s Third Law rhsk)0+ zkle8l v) -(a aqinx/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 ofci)rvn/b h(mf0mqk- ( 35 m/s. The batterswings and hits the ball)b/0mm r fkviq h((cn-. The magnitude of the force that the ball exerts on the bat is always

  11.13: A physics book sits at rest ohp1 q1jv-(hu rn a table. On top of the book is a calculator, also at rest. Which one of the following choicerhq 11u j-v(phs is the Newton’s Third Law pair force to the force that the table exerts on the book?

  05.06: The students in a Physics I class were in lab cjnj3hgv3,d() ;ikwyw uauy*)onducting an experiment related to Newton's Second Law. The collected data wer;(ng3uj),3jyvukdiw )hw * yae displayed on the graph at the right. From this graph, what conclusions can the students make?

  99.03: If the net force on an g6d)r 4p 2feidobject were doubled while at the same time the mass od) 42 dgpifre6f the object was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is acceler f-(c u xvr)v4wrws:f8ated uniformly from rest to a speed of 20 m/s in 10s.wuf4)s(:x-r8rv wc vf The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is trav,0j j z*(f *xke*rwmsaeling down the road. The mass of the trailer is 4 times the mass of the tractor. If the trac0ex z*mswr*,jfa*j k(tor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles *b17r 2u.p r/ waxierobest explains why large tractor-trailer trucks generally accelerate much more slowu brw*e1po7.r x2/ rialy that automobiles?

  99.19: A 50 kilogram skatjb zc 3pl,mu;9en0ala. l v*7fer at rest on a frictionless rink throws a 2 kilogram ball, giving the ball a velocity ofjun 3*cblvml fa7; la .p9,0ze 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface of the earth withq43 1cb/) dtvbh0vw ay a weight of 100 newtons is accelerated ahwa1 qv0vb4c3/ by) dtt $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated from rest by opj6xjmw cz,()g;tp ;b-:1d-npv l f da constant force of 2400 N. What is the speed of the car 8.0 s after bp pvcw:d(; - dn ljo-zbt6pm fjx,g)1;eginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slidei(goqv yty*e:fm/ l5 fn-js94s across a rough horizontal floor before coming to rest. The frictional force acting on the block ise-vs 4f9( ygtqf ol*mjy5ni/: 3.0 N. How far does the block slide before coming to rest?

  95.38: A block with 1ghba) 5 x8 -lrkn jmir3w55chinitial velocity 4.0 m/s slides 8.0 m across a rough horizontal floor before coming to rest. The coefficient of friction is r8535 hkw1 cx)mb-n5lrgjhia:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a person:d,pl - ( 4;uzinl nibi7 -gjfyx*m0mw pushes directly to the right on the box with a force of 60N. The coefficient of kinetic friction betw ng*-j4( bd7: mlpni mz;lf,iyi-uxw0een 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 .suyyev a77 q ct7b:a0to rest on a horizontal surface. The block travels a distance of 12.0 m during the slide. Which oney77t vc:.y7sb0aeqa u 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 ;b8vd2c(ky ) a6oxsz (r/nrpsth its brakes locked. It then hay dvb286rzr)(c;s/po (kn x sits 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 uq.l0)7bxz4 cia amcx5 f, cs/a patch of ice at a speed v with its brakes locked. It thq,f /b7a50ixa u4lc)cc zs.xm en 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 car makes an emergency stop by slamming on the jt ml3f(rt(dw,* os) c/xnxl 7car's brakes and skidding to a stop. How far would the car have skx( w f(mll7/,)ost*tjxcd3n ridded if it had been traveling twice as fast?

  99.39: The driver of an automm0+s:mrzqtk qz7:g3v3xh 5k6 d6e e jbobile must carefully control each of the following devices. Which of these devices 6zj3mkq 5+dt0vk 7bq 3:meh:xe6g zrscan 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 weig x0h:5xzz,t)9 bxlcynzme 0 -wht of 15000 newtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36 m/s nearz5z xbh0ex0tzny-lxc)wm9, : the surface of the Earth at takeoff?

  07.21: A box slides to the right jy*itka19mk -0cwctio2 w/ b-across a horizontal floor. A person called Ted exerts a force bkm y/ockt9ctj1-ia 0 i-w2 w*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 forces exerted on the box.

  02.27: The diagram below shows three roller c:p nz4,cr2xjf oaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly over the tracks:j2p,c4x nrzf 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. Asnp u6ukmdfud *o0j)lfi 2l-hed 4l,:6sume that on all tracks the roller coaster carts start from rest )o02u,di6 4*jdllpfkf-m dhnue6:luat 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 caru r: tt3bg8*kmtrolls frictionlessly along the curved track from point A to point C under the influenmbt u3t rk:8*gce of gravity. What would be the direction of the cart's acceleration at point

  02.40: A box with a mass of 5bst 01 osg4/rl0 kg is dragged across the floor by a rope which makes an angle of 300 with the horizontal. Which of the following would be closest to the coefficient of kio b/0gtss r41lnetic 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 is pushed a :tgc)o umg*r 8h7p+x wbal *u*p+h+hvgainst a wall by a 100 N force as shown. Thecoefficient of kinetic friction is *h+l w:a*uc poxh * m)p+ 7ggvt8+hbur0.30 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 acrossqs;o3sq)i.c0 jye4y q 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 theoy0q3js ye sc i;)qq.4 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 crate6st,k2ghzj rs ;097/zytkdjs on a table. Neither is moving. Which of the following statements concerning this situation is CORREC6k,kyr tt s7g0;z2jhdsz/s 9jT?

  06.15: A crate of toys wr zfoz0md8r:fc.:*y remains at rest on a sleigh as the sleigh is pulled up a hill with an increasing speed. The crate is not fastened down to the sleigh. Whatwf:* :0 8.rdfro mzzyc force is responsible for the crate’s increase in speedup the hill?