99.36: What happens to the inertia of an object when its v y i4na952nxmoelocity is doubled?

  02.14: An intrinsic property of mattertc f .fn7m z at0;7fah84i/zoo is one that does not depend on the quantity of matter pr 4ahz.fffnc7a ; o7z0t8 o/mtiesent. Which of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of thcow59;(bzsnl6 x1dm kn3/sj fe Earth. Assume the Earth has massd(xko5; f3s nz61bcn j/9swml $5.98 \times 10^{24} \; kg$ 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 tolq+ s ,y g(*8gtxfn c32n*vrmhe surface of the Earth. What is the magnitude of the gravitational force acting on the earth by the sphere? The Earth mass i*f+y vq xo(mns*nrt283 lg,gcs $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to increase while its accelerat5pid d1x*cxk7aint0 5 ion dx*ak5p0ic5 1xt n dd7iecreases?

  00.11: A certain particle undergoes erratic motion. At enn j*,l-a91 vf+x0-ob sffpxhvery point in its motion, the dire-xxjloanh*1 0n9-f psf +fb v,ction of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string held by a peyx 1jejxxl3zj(q) .h/rtuf49rson. The person pulls on the string uniformly acceleratix4zlj(9 t/ e)yj 1x.hj3 ufqrxng the block upward for a short time. During this time, 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 o5l.e bzeywgd)bn o9am 2:z.p1f the following situations is the net force constantly zero on the)zb9 bz.5gyoa:.d 2wlnp me1 e object?

  13.28: An object is in free fall close to the ground7y.:xgv1: yeoc)r hg w. A person intervenes and slows the object uniformly to restxyy:g .7rhcg)wev :1o. 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 is g.

  98.03: An object in equilibrium has three forces)8p21jn jsl hu, F1 of 30 N, F2 of 50 N, and F3 of 70 Nuhs2)l p1n8 jj, acting on it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newto-fey tyz,)afex du39y s iw(bm+8po0 0ns can be combine to form a resultant with a magnitude of which fs0my(tyz xawe+uo-pi ,)f8 903eyd bof the following

  10.06: Which of the following statemel *h+je)8gk *u ;ldunrnts is most closely associated with Newton’s Third Law of Mo*nlke; u+*8lrjuhdg )tion?

  95.06: The reaction force does not q s5pc,xh+d8vcancel the action force because:

  14.14: A box rests on the floor of an kb,g7 a):(hu7l1td xvklqq g2p0n5lmelevator. The elevator is accelerating upward. Which onem5n7b 7qlx,q)ghk(t2a 1l kvld0p :ug of the following choices best represents the Newton’s Third Law pair force to the gravitational force acting on the box by the Earth?

  15.15: A skydiver fall2 c j*7li9cepkxi(e7gl( -bj ls downward through the air with constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair forcecbklij9p-(l g 7ej lx(c*2i 7e to the air resistance acting on the skydiver during the fall?

  06.08: A baseball is thrown by a pitcher with a/o l 5)/4fkveb:.kft ehh b7od speed of 35 m/s. The batterswings and hits the ball. The magnitude of the force that the bafe.5thh7)o e: bdvb/oklf k/ 4ll exerts on the bat is always

  11.13: A physics book sits at rest on a table. On top of the bo:w tdas5yq 9p1ok is a calculator, also at rest. Which one of the folt:qw1ap9s yd 5lowing choices 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 conducting an experiml7fq;mjx1x gy; f )lt-ent related to Newton's Second Law. The collected data were displayed on the graph at the right. From this graq f g-;lxmlx7;)j 1ytfph, what conclusions can the students make?

  99.03: If the net force on an object were doubled while at the same time th)z1*lua3j vgle mass of the object was hal auv)gjlz*31 lved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly from rest to f/30in wqmeucwd; z(dyd9. c o+iwn ;5a speed of 20 m/s in 10s. The magnitude of the net force accelerating the ;w.coi/ 9dn5zw0 c+ ;ddnyuqiwf m (e3car is:

  99.05: A tractor-trailer truck is traveling down tmu l be3lc;/e4he road. The mass of the trailer is 4 times the mass of the l/c 4;lbm ee3utractor. If the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explain-7 bpjz,b kid,s why large tractor-trailer trucks generally accelerate much more pbbdiz,j k,7-slowly that automobiles?

  99.19: A 50 kilogram skater(ret *k/ade6u4j66 l ,md auyldfv8 /d at rest on a frictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement describes the subsequent motion?(6em8 rduay lj4*dtleav du/6,kf6/d

  00.13: An object near theo xswq9qpy:)5 ; hrx2xgz+.ds surface of the earth with a weight of 100 newtons is accelery h:s52qog9x)x.p;+x szwq drated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kgqk6 :+iy4ne bx is accelerated from rest by a constant force of 2400 N. What is the speed of i :+6xne4qy bkthe car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s sli5 oew+s8 2avcgro3l2f-b u . rmwe9ke0des across a rough horizontal floor beforfbew w22okoge m3 05ua9er-l v+.8 rcse 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 m/s slides 8.0 m across a rough x3 4/8/:mrfvny+ tkrx ht8ok khorizontal floor before coming to rest. The coefxt+84x:kn/ mtvyoh k/ k8r3rfficient of friction is:

  09.21: A 20.0 kg box remains at rest on p1ud*r0lf0y pa horizontal surface while a person pushes directly to the right on the box with a forcpup0d f0*r1lye 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 unifo:tom7q ra 0 mz0.af5lqrmly 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 coeffici:mqt rf7o0zqaa .0ml5ent 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 with xjh kq-zp)gy(:s .ry a+w1t8zits brakes locked. It then hits dry aqj :t8yyk g-zpw +r hs.1)(zxpavement 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 mo d+j1y rvax(j;5n wld:x0xugz.trs33 oc6g ; slides across a patch of ice at a speed v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic friction between the tires and the dry orn v3xzyu .d(30;rsgdx;jjx 6alt:gw+ 5o c1road 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 slam4tv9frbram /2 7z2vosming on the car's brakes and skidding to a mrrsz2v/o 94afv b 27tstop. How far would the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully control each of the follo xog q 5j-z(;,vktomj3wing devices. om,3gzj5jt xv;(oq-k 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 15p. i yf5gt3 wen7dj icuo*.l/3000 newtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36 m/s near the surface of tweg/3cujilo5*.nd yf3 p .i7the Earth at takeoff?

  07.21: A box slides t 62a6ur5nycuxv+20 ln5xwhzm o the right across a horizontal 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, 60 vxw55m2u+6 n2x c uarynhzlrank the sizes of these three forces exerted on the box.

  02.27: The diagram below shows three roller coaster tracks of equal length. *lbz uvyen.t+.d w2b eu 5zo8:fal42jAssume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly over the tracksejul.n5ya 2 + 28f:b4z.zut vewo*dlb 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 l jh*,nmp x l;m53ot:6a6eirr;r 8agopength. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves fra,6 o; j3ea8n oxh; * rrpir5m6tmpg:lictionlessly 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 roy+5i;yabxi,9tjeyl9b 8fb+4 0 bf lpgllercoaster cartrolls frictionlessly along the curved track fromb+ 0y;y4b5at9gy bi ,f+ eblpx8ilj9f point 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 whidp/ l0h2wro/ )ef*aqj 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 ane rao0/2 fqpl/) dhjw*d 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 against a w /3 . x6+;hoj1yl/tdb5ihg+jrf3n4x ajvaschall by a 100 N force as shown. 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 sey 6d+/hnhs3 45vtjx/bi.lhaj ;1 o xf3acg +jrcond?

  05.10: A homeowner pushes a lawn mower across a xz:rmv j0ft 7ypc;k(wuhqlow2r*j ;bx,/s(2 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 rela ypjbt22qc0rvmxu( wsz;7 kwf/jho:,;(xrl * tions among the various force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crlqdcc9, idf:4-y ; b fv*pzgn7, k*ptoate on a table. Neither is moving. Which of the following statements concerning this situation is CORRECT vc fg;n:z *p4l-c97q,df*pdkit,o yb?

  06.15: A crate of toys remains at rest ,dcb wbgty(rb:.w*u+ 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 fg(r:+wt.y* wd ubbc, borce is responsible for the crate’s increase in speedup the hill?