99.36: What happens to the/;mvqhk5x mp o qd0 ufosm8x86;8lx l, inertia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not depend tw kl zeuh*hj 5l33,e9on the quantity 9we j 33ht5lzh*u ,eklof matter present. Which of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface ou3p4u+vorwp,2 u tbf/f the Earth. Assume the Earth has mass p+t fporu u b/vu32,w4 $5.98 \times 10^{24} \; kg$ 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 of the Earth. Wkqwfl),g:z9k hat is the magnitude of the gravitational force acting on the earth by the sphere? The Earth mass w,kg:) 9l qzfkis $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an objdta;y3s2: wyfjzu3c5eo(2j ject’s velocity to increase while its acceleration decreas2 zfuwey:; j3j(3ad2c styo5jes?

  00.11: A certain particle undergoes erratic motion. At every 3/ 32hqr p u*hfuzgx;jpoint in its motion, the direction of/j *pu3hh3rz fx2q;ug the particle’s momentum is ALWAYS

  17.14: A block is suspended in the -9trht1 ckfb+b5fl*z x hv4e4 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, whir9 h5 4bfvl he+btt-kz* xf4c1ch 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 nej;twdja0 qp/j,63opb t force constantly zero on th36,qd pjojjb /wpta;0e object?

  13.28: An object is in free fall close to the ground. A person intervenes and sl-xj47xf w osw.tga 3u1ows the object uniformly to rest. Which one of the following statements must bexws.7o g4u1tw- 3axj f 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, F1 of v 6(cjj8vil/m,qtsi 7 wsx5x/30 N, F2 of 50 N, and F3 l,vxt5s( / 7xm68ic /iqwjjsvof 70 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 n b:fx)ev /tw/lya3to9.o7n l jewtons can be combine to form a resultant with a magnitude 9o7 f3/tnjt wvl/: bo)y .xlaeof which of the following

  10.06: Which of the following statements is most close7 /lmf:c*(g nm tiitz*ly associated with Newton’s Third Law mlg /*inti:(* z7c mftof Motion?

  95.06: The reaction force does not cancel the actio jpr o 9dw72wp;5fzfh2n force because:

  14.14: A box rests on the floor of an elevator. The elevator is ac6n oq7-l+wol dcelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational force acting on theoonl 7wq+-6 ld box by the Earth?

  15.15: A skydiver falls downward through the air with constant speed.8xpr 8dxm -m.6y*mjk khv4sn * Which one of the following cs rn.m kdjpmhy6x4v**x-k8m 8 hoices correctly 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 f437 dnjm pq.ju-ewdq +3:zavrhh-;v speed of 35 m/s. The batterswings and hits the ball. The magnitude .e: 3v wqmdfr dvzuhhj4n q;-+-7jp3aof the force that the ball exerts on the bat is always

  11.13: A physics book snc,2sr 8pig ;gits at rest on a table. 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 exerts on the;gr,gpsn ic 82 book?

  05.06: The students in a Physics I class werexe: o:z+ d:xa/vdg9o h in lab conducting an experiment related to Newton's Second Law. The collected data were displayed on the graph at the rightxg+h::a z :v9d xo/ode. From this graph, what conclusions can the students make?

  99.03: If the net force on an object were doubled nkt1:4 q6mn8ts y4mzc,rs0 wvwhile at the same time the mass of the object was halved,then the acctknmw:q rs44ny806zm ,c stv1eleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated u7f0fhasl5pw7 7e/mfe niformly from rest to a speedeea p0l /m77fwsf7f 5h of 20 m/s in 10s. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the4q cbhqum:ra4xte 1 /lx6xg5+ road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force that 5: xg6ute r l414ha+qcxm qb/xthe trailer applies on the tractor is

  99.16: Which of the following principles best explaemb1m.w .b q;kins why large tractor-trailer trucks generally accelerate much more slowly that autqm..m bek;1b womobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throtk 41-nduk4 mmws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Whiumn-dt km414k ch statement describes the subsequent motion?

  00.13: An object near the surface of the earth with a weight of 100 newtons ut mf/97k+hxg*tc k 3gis accelerated at73*+ttf9cmuhgxkgk/ $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg iluhk/b4f d279sx lqwm3s+ru (s accelerated from rest by a constant force of 2400 N. q m /wsx473fsu llrk2bh9(u+ dWhat is the speed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides ac) -6yx lfhsz 6lsi1(i2tk7b3 ueua ,xcross a rough horizontal floor before coming to rest. Thyz 6267)uues-kbfhi c 3alis(x1t ,lx e 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 r+0 plpf loxelu,p8 7(2s-: yugucv1 hgough horizontal12fev u-g pu+h 078plgclxopy:,l (us floor before coming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizq9;8 99f; 1 sgwjevb.piyv sipontal surface while a person pushes directly to the right on the box with a force of 60fes1qw ipb p;yvvji.98;99 gsN. 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 movink j r-mjr/l /xi4f9p/zg at 8 m/s accelerates uniformly to rest on a horizontal surface. The block 4 ljx f9mj/ikp-rz/r/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 acro9*1mcop.e luc ss a patch of ice at a speed v with its brakes locked. It then hits dry pavement and skids to a stop in a dis9lc . u1cepom*tanced. 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 with its brakes.y/fq ynx7l 0u locked. It then hits dry pavement and skids to a stop iu.q xn/yl yf70n 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 eme6akgk 53x fhh9rgency stop by slamming on the car's brakes and skiddahgh9f kk 63x5ing to a stop. 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- gzlt7+naa x9 of the following devices. Which of these devices ca tal7z -x9an+gn 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 ay) )brursh05 dx2(j/6czbnf y rocket with a weight 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 near the surface of thu(jz/ 5rb)sh )nc6 by02dx rfye Earth at takeoff?

  07.21: A box slides to the right across a horizontal floorat) 0u5wwjs7 a. A person called Ted exerts a force T to the right on the box. A person called Mario exerts a ft)0wu7 a aw5jsorce 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 trar32o ixa:1of,kzc y,f:p mozzkjs3.2) an2idcks of equal length. Assume that on all tracks the roller coaster carts start from rest at the sa2soaaxkr oji.d zz 3mk 1 f3yofi:22c,n)z:,pme 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 s6c0 r*hfyk 6 0tzp9b1+vgybidhows three roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest a1ry0zhk0c d9gv i fb*ptb6y+6t 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 friction;nv49gi, xbmp lessly along the curved track from point A to p,n9i pb;gx4 mvoint 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 aga6ua w .vw+2z,- ylaq rope which makes an angle of 300 with the horizontal. Which of the following would be closest to the coefficient of kinetic friction between the box g l-zwa+v a2uy6awq, .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 -ms,swqz lanab*0fyzl3 96 d(pushed against a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the cfzy,0ln6sbd l a(3 a*w9sq- zmoefficient 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 an; .tnxgqz7*iq :txo(-gmia, lawn mower across a horizontal patch of grass with a constant speed by applying a force P. The arrows in t-xgo( nia. ztx 7qn qt*g:i;,mhe 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 various force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans agai vtidqf l3 ph-72t+7a*/aawxhnst a crate on a table. Neither is moving. Which of the following statements concerning this situationa*hdv w7t-p qxah3 t7/i+l2fa is CORRECT?

  06.15: A crate of toys remains at rest on wr ide 7 :sp+nza:y;6da 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 the crate’s increase in speedup the 7padsr+:e y;iwn 6d: zhill?