99.36: What happens to mraf5y* 9rmh/the inertia of an object when its velocity is doubled?

  02.14: An intrinsic property ogx; c,-wiol5of 24np vf matter is one that does not depend on the quantity of matter present. Whicln;g5 ,vxw-opcif42o h of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the sunb)pp /nb/ 4qjk:,t9khqx0xxrface of the Earth. Assume the Earth has masht pk/:) xxbqn0bn kq/j9x,4p s $5.98 \times 10^{24} \; kg$ 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 surfacend;ymeb0o0/du e )i(s8.g jei of the Earth. What is the magnitude of the gravitational force actin bie;0 ge. dein/(j0uy 8mods)g 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 increase whf9wwb*5qne1du ,bz1 v ile its acceleration decr5*1bfz qwv,1w dubn9 eeases?

  00.11: A certain particle undergoes erratic motion. At every point in it /y,9u3zg yw3 yixwil/s motion, the dirixl3gyizy/3 9 wu/wy, ection of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at thewi0 pxz ;h;,pb 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’s Third Law pair force to the force of the s;p b;p,wxi0hz tring on the block?

  07.18: In which one of the fomn11ev vjmu2 6llowing situations is the net force constantly zerovun1m1 jve2 6m on the object?

  13.28: An object is in free fall close to the ground. A person intervenes qmn1ji*6 s4a+mw*v xmqs*y )vand 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 san1q4*m 6v m*)qwi+myj*sx vstopped 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 foil;qmqhoby.2* +qrg 2rces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitude of the resultant ymqgh;bq+*ol22 qri. ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can be combinel lbuu5 aqo,c1wuni/t nz m*sf 6)g/30 to form a resultant with a/q/0 lzn1 cu 6,*bnf3 miatugs)lowu5 magnitude of which of the following

  10.06: Which of the following statements is7lt 9ngf*8.- lv5w2unvhp lim most closely associated with Newton’s Third Law of Motionllh*5nng f8. pv w t2l-vu7i9m?

  95.06: The reaction force does not cancel the action force becauxl kpf+p5rf-sj 5wd;2se:

  14.14: A box rests on the floor of an elevator. The ej62d fi -cju;mlevator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational force actc;- mfj u2dij6ing on the box by the Earth?

  15.15: A skydiver falls downward through the air with constant speed. Wjz8axj 6xu s644:a oyhhich one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance acting on the sxjx6soz4 4j8ah 6: auykydiver during the fall?

  06.08: A baseball is thrown by a pitcher with a spe5 2lt(uyzfz+7)lhtw4ik t f m4ed of 35 m/s. The batterswings and hits the ball. The magnitude of the force that the ball exerts on the bat is y4zm2l t( h)+lw5kzfi7fu4ttalways

  11.13: A physics book sits at is3oa8:tg: e urest on a table. On top of the book is a calculator, also at rest. Which one of the following choie8a3o t::g suices is the Newton’s Third Law pair force to the force that the table exerts on the book?

  05.06: The students e 3+ zehia74xt9diq 7i2hnv 77 l.obcbin a Physics I class were in lab conducting an experiment relateq+n7e9hietb7hbd v7 ii l.z2o43x ac 7d to Newton's Second Law. The collected data were displayed on the graph at the right. From this graph, what conclusions can the students make?

  99.03: If the net force ,nlk(ib2;t:tb 8yr j v: sdx;zon an object were doubled while at the same time the mass of the object was halved,then the acceleration of the objecb2dbk;n8,v ( itr:z xl:yj;stt is

  96.15: A car whose mass is 12 f mmh,0fhr+brdk m2ha fq0w.(eoy/, 500 kg is accelerated uniformly from rest to a speed of 20 m/s in 10s. The magnitude of the net force accelerating the cramh 0,hoffmwb 0+. y(rfk22he,mq/dar is:

  99.05: A tractor-trailer truml.5 /s.ko: kkoab vb*ck is traveling down 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 tractor kmk.l*/bo5:vkoa . bsis

  99.16: Which of the following principles besvghlx:)( fn5b)yfn1g up7c :w t explains why large tractor-trailer trucks generally accele gp):(nflfn) hv571cgwuy:xbrate much more slowly that automobiles?

  99.19: A 50 kilogram skater at res w 3ksms;5vtzw7ztx: ,u43 imit on a frictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statemen7;mi:s uk i3 4wzt5z,v3tmxs wt describes the subsequent motion?

  00.13: An object near the surface of the earth with a weight of 100 newtons ist3u k* 5wy h ct(fpt/,rs60nwc accelerac3c 0w6nkysp t ut(*5t wr,f/hted at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated from re 1ybv: xfs4 nwh j9y5r3xoz3*yst by a constant force of 2400 N. What is the speed of the caj4:hzs x33r fnb y*oyx9wv1y5 r 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4pr2, k.ys,p6 coxj sglimeq /jc7puu l,u(7,0.0 m/s slides across a rough horizontal floor before coming to rest. The frict2(,,o ry,6js psclqxmp,ijeup /ck0 gl.77uuional 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 qt3swi- tsq5f0f)6 ml.0 m across a rough horizontal floor before co5 wmqtl30si-sqf t6f )ming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal.xjs7 ;ftttvpb ; eh0) surface while a person pushes directly to the right on the box with a force of 60N. The coefficient of kinetic t;0sx;h bfp)v.et j7t 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 accelerapd3kv.4yqv*2 dqmg, ktes uniformly to rest on a horizontal surface. The block travels a distance of 12.0 m dukk yp .qmg*3 2vd,qvd4ring 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 iczhw-9pd5 2p4s2tgyw sm/8u qre 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 d hpu z8/mrs5py2q9gdsw wt24 -ry 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 nm8 1)l 1e4fc+qi ri /up. aiuqjp;/ddspeed v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic frictiope l/iuf1mir/ q +dani udjq)p8c41 .;n 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 bymyo5ix8ye72i4n 1b cz slamming on the car's brakes and skidding to a stop. How far would the car have skidde oe4cy5nmz1xyii8 2 7bd if it had been traveling twice as fast?

  99.39: The driver of an automobile must 7mae3:j,2-txl,gk ez6e r akxcarefully control each of the following devices. Which of ,6 ,l2xmzaa7jxe 3-e:kkgr te 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 a6 )4fhgek azffd3n a8: weight of 15000 newtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 nfdkz6fe 3a4fah)g: 8m/s to 36 m/s near the surface of the Earth at takeoff?

  07.21: A box slides to the right across a horizontal fd-t7jk2ik ihp6.y9 eula/q 2gloor. 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, ranq-2k iiglkj/ pu76d .eaty h29k the sizes of these three forces exerted on the box.

  02.27: The diagram below shows three roller coaster tracks of6u; :pepq:zb/x/guw, )g8 htw5 g4iqxd xsv0b equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves friction)qg seg;qpxugdw4 i, u0v p:/x8 x/h5b:tw6zblessly 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 s:f rm,gs ,w-hz8dzih.nu s/l.g7g;n s hows three roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and movz-ihlw,ghr;ugmg , /: 8sf 7.zssdnn. es 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 f1:uxaxw dt5scil8.3 p /l iz+arictionlessly along the curved track from point A to point C under the influence of gravity. What would be the dirial/ i: zsxd18 +p3. cutx5wlaection of the cart's acceleration at point

  02.40: A box with a .v5 7)-nn8mzqbco9j kx 8 vbcs/ fmp+lmass of 50 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 kinetic friction between the box andf8 lv5.mqp9vxscjkonb 8bn)- c mz7/+ 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 push)(p +we-tagam , hzjri, ur/f4ed against a wall 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 bl,mg()-ar+w/h t 4uiz, prje afock after a time of 1 second?

  05.10: A homeowner pushes a lai -vs( :jckj4ls.+qlewn mower across 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 t4 qje( j+.vs ll:c-ksihe following relations among the various force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crate on a table. Neithek-ax69seb5: ( ak0l . 6i,lpqrw d8axoh9nshs r is moving. Which of the follaakwr q:,oe-i08a b(xssp sl.695dlnh x k69howing statements concerning this situation is CORRECT?

  06.15: A crate of toys remains atv,fhod26l)*yfp-bq; 31 *kdmoozs sx rest on a sleigh as the sleigh is pulled up a hill with an increasing speed. s,o-6dfyxhoofb vklm;1pzds) 2q**3The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?