99.36: What happens to the inertia /4 maw ub ;t5yac.vz*bof an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does89w49eicc h bq 2(enprepyu(, not depend on the quantity of matter present. Which of the following properties i9p eh pye ur8(bci2,9ncq4w(es NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume the Earth hjdptt0u5 ehkty 0 jbcvnihcl://;75 *as mass5 7t n5 hb0i/e/ptjcth0ld;kvu y*:j c $5.98 \times 10^{24} \; kg$ 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 sur eze,1r0s,v3b l9z.gue ua;r yface of the Earth. What is the magnitude of the gravitational force acting on the earth by the sphey3v.,rsarbe e,zg9uue 1 0 l;zre? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible fofmdw5 c0 4g;wvr an object’s velocity to increase while its acceleration decrfg4v 5wmd ;0wceases?

  00.11: A certain particle undergoes erratic mot4t9 ma 2u pwt9lb.vml2qhsx 3/ion. At every point in its motion, the direction ofsmbxv9qh23 9tl2m./w t la u4p the particle’s momentum is ALWAYS

  17.14: A block is suspended in the b:e k)2+og6,pi inakl 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 the following choices correctly identifies the Newton’inbk a6:g eolk,p2+i) 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 cons ,(jsuhfr.u le p+8;+ qtz.tjhtantly zero on the object?h( lutqte 8pjj;., u+f zsr+h.

  13.28: An object is in free fall close c8w(ocy 7e(pf c3 f;jd()6wxp /v j wa:qisi4dto 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 acceleration from gravity ajijfpcc (;:/e oy fci)ddxwv(w7s (4q36pw8is g.

  98.03: An object in equilibrium has three forces, F1 of 30 N, F2 o*fs4 rw/jhc.d b9wph*f 50 N, and F3 of 70 9bwd r*c*/4hps hwjf .N, acting on it. The 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 nsg0 g8f/e4z4ul7u ox form a resultant withz 87sog ue/xflng04u4 a magnitude of which of the following

  10.06: Which of the following stat 9 h rxor-ctu5y7,k6(dwrm1m vements is most closely associated with Newton’7dc k 5hyor6r(vxu1tmm -w9r,s Third Law of Motion?

  95.06: The reaction force does not c1 rjn+p( lh2jt5tj :awancel the action force because:

  14.14: A box rests onv9jslh3 y*4lu the floor of an elevator. The elevator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational force acting on the box by theslj4*39 ulh yv Earth?

  15.15: A skydiver falls downward through the air with constr 2 2o:y,t; w+hhzjs2d6qqhd rant speed. Which one of the following choices correctly26hzty ; rrqd: swq22dhj,oh + 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 hi-hh*7jwz6j+ri 7es0rfv. e 4g, uqjspeed of 35 m/s. The batterswin vhiz7e,fg 7rhshj*4-iwu j 6j+rq 0e.gs and hits 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 tablk.jdv.+r9h.xk: ywp 0 r6aue je. 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.yrheaw6p0x:v9 j dk.+ u rkj. exerts on the book?

  05.06: The students inizjldx1qp ;: 06,kb vm a Physics I class were in lab conducting an experiment related to Newton's Second Law. The collected data were displayed16 zi mkxq:0 ;dvpjl,b 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 the same timeh.bcadu ;*xwtux; (h- the mass of the object wuaxdw;*xut(. h - cb;has halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is acceler)sv*:xihi;u, mwvr :yx7. q2z /klodnated uniformly from rest to a speed of 20 m/s in 10s. The magnitude of the net force acceleray.xzv ;i ,wi vdumhrn/*xs:k2:o7)qlting the car is:

  99.05: A tractor-trailer truck is traveling doww-1r d(.z2 buu2bxwsx n the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the trailer applies on the tracr(1x 2bs-z bu2udxw .wtor is

  99.16: Which of the following principles best explains why large tre8 8rvi/o-; nn cwk:k0.deivzactor-trailer trucks generally accel dn-c8kvei zk. /nvriow:e8 ;0erate much more slowly that automobiles?

  99.19: A 50 kilogram skater at v4aq :)( euyt 4/ ol/avs5kn2l6pti+bd)ppf qrest on a frictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement describes the subse/(4p): +vopibpasny45 )qvf/qltatl 2euk6d quent motion?

  00.13: An object near the surface of the earth with a weight of 1 agy b:,knnzc tc/8v 6lep54i000 newtons is accelera:nz tn a,cge8ycl5/40i bpk v6ted at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerat)iu s.:yj3ct0oojlt*s wpevpl+ .m j8n*0lk5ed from rest by a constant force of 2400 N. What is the speed 0n 58l 3+.lpwyei o:l mj) *cjk*t.jotp0vussof the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a rough horizdg4ka6iqlgbhg8w 6:4ontal floor before coming to rest. The frictional force acting on the block is 3.0 N. How far does the block slide before gh :4b6qaki6l8w4dgg coming to rest?

  95.38: A block with initial velocity 4.0 m/s slidpo/wnne mcrmuh3s x 6,6 l;psgw*d5h9xy6.y0es 8.0 m across a rough horizontal floor before coming to re;pw9 hng6yr6sy xuml35*/h.0 xnep 6c om w,sdst. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a person pu cc4k0zlpdq5rg1 u ;(pshes directqdc4;ku0 p(g1 zrp5cl ly to the right on the 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 uniformly to rest on a6+.-plnjhev p horizontal surface. Th+ pn jpv-.6hele 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 paufl(zs5s;.k0j:p oaftch of ice at a speed v with its brakes locked. It then hits dry pavement and lfapo kf0 (;:jusz. s5skids 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 speed v n2l,v vejafa92:nfz* with its brakes locked. It then hit ln*fv2: 92znfea,v ajs 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 t, cpv mjw9v. ;ps; g1s-voki5ghe car's brakes and skidding to a stop. How far would the car have ss5 o-;1 giwsvpvvmj ,.; 9pkcgkidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carz b2v8e:,79wuj aynwbcc q 3*aefully control each of the following decw aqu:*v,9z 8nb2a 3 wjcb7yevices. Which of these 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 150o25 o5r1j uwou00 newtons is 24000 newtons. About how much time525wo1ru j ouo is needed to increase the rocket ’ speed from 12 m/s to 36 m/s near the surface of the Earth at takeoff?

  07.21: A box slides to the right across a horizonttmsph lv5l:-3al floor. A person called Ted exerts a force T to the r : p35tlslhvm-ight 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 coaster tracks of equal length. Asqn+hd*; v )c5c 1::ejrlq wndesume that on all tracks the rod+l5ndr cq:h)ec*nqw;j1: veller 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 coasnw cbnn/,8mw)( 4s6 w 1ujxbo.pd: joeter 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 to th ,. 8mp)e b(uwnjo:snwdnb6wc/oj1 4xe 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 rollercoastehiw 8ok0m04cz r cartrolls frictionlessly along the curved track from point A to point C under the influence of gravity. What wooz8iwkh m400 culd 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 whinl i1y2wcp 2a-zpan9+ ch 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 shown in the diagp9zia+w2ny- ap n 1l2cram?

  04.40: A 6.0 kg block initially at rest is pushed against a wall by u-g yb0lt m0qq;2st)ya 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of statitty2yq 0;)l0g ubs-mqc 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 acros7+w5pkfx6aqu lx) cvm c.c. q-s 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 varlaw.p5c )kv. c+-fxu6q cqx 7mious force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crate on a irg7 i+j9slyt ln/4qpffd8 )r, 5t,et table. Neither is moving. Which of the following statements concerning this situation i 5 rt4sy +illr)89e,pt7 dtfgfq,i/nj s CORRECT?

  06.15: A crate of toys remains rxb :5im(:h d5s8)hnlg *n uieat 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. What force is responsible for i) hr*5i(bhe 5musln:nx :dg8the crate’s increase in speedup the hill?