99.36: What happens to the inertia of an ,b) o( py:n-wt opspd*object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not depend on the .iyyn(6 6sl 7s/1twqi )c*y/v opjk s b2f0fofquantity of matter present. Which ofofiwk t .j1lybf/y)ip (y7n sq*/ v6sf06soc2 the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface ofvm/ ,aixabnr+uf-bi,s l76d) the Earth. Assume the Earth has m +,s/l diabn v,b7rfx)-a6imu ass $5.98 \times 10^{24} \; kg$ 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 kt*gi:x3o 8 retxf-h6the surface of the Earth. What is the magnitude of the gravitational t t8 fg*3 erko-x:i6xhforce 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 ip9 d)n b7xhm(5g6p5 shia0yl dncrease while its acceleration decreasesa09plxidgm7y phn b(h5s6 d )5?

  00.11: A certain particle undergoes erratic motion. At every point i ,mtlgt1 :0yyjn its motion, the direction of the partiyyg10,j : lttmcle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string held by ii wk+4pig1vwr2cu 0an6r2 2p6gdn5 ha person. The person pulls on the string uniformly accelerating the block upward for a short time. During this time,r v1h nu r2aigd25ip0wp+knw 64cig2 6 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 ze *m(kpt5ad :pcpgb zj4(xd ,;uro ox(z g4d* kp;(djabmt : 5uc,ppn the object?

  13.28: An object is in free fgqj*bw zeg6:img4 4 8dall close 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 g b:zij*8dm g 464qewgis a and the magnitude of the acceleration from gravity is g.

  98.03: An object in equilibrium has three forces, .n nzsjy* :; +b)mnvsf,o) tghw1x*ytF1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnif nx)t+. n y;1*mhgjw,* )no tssvzyb:tude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtog4di3x v9gb8ejq5r m+ns and a force of 10 newtons can be combine to form a resultant with a magnitude of which of the followin9gv+mgj 45ixrbd8eq3 g

  10.06: Which of the following statements is most closely associated wip27uqw h /xza;th Newton’s Third Law of Motq; whz2up /ax7ion?

  95.06: The reaction force does not cancel the action force bece3,lb:re9fzc+ mf* 0a p-ezucause:

  14.14: A box rests on the floor of an elen/;(ulaok0 x ivator. The elevator is accelerating upward. Which one of the fouxi nokal/0;(llowing 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 falls downward through the air with cvu0 s18 tam1jisq/9 iponstant speed. Which oneqat/98s0v 11usipj im of the following choices 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 thro:;nxl49 ;oa8.t/xv idsuihs bwn by a pitcher with a speed of 35 m/s. The batterswings and hits the ball. The magnitude of the force that the baiuxotbni.9;4sa;l: x/v h8sdll exerts on the bat is always

  11.13: A physics book sits at rest on a table. On top of the book538ypb cawk4p t-,xkt is a calculator, also at rest. Wh548,bk wat ct xp-kp3yich one of the following 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 u8,pn1 ece:du in lab conducting an experiment related to Newton's Second Law. The collected data were displayed on the graph at the right. From this graph, what conclusions can the students m e8p: 1n,uucdeake?

  99.03: If the net force on an object were doubled while a 6nqz5jbg)y hff61qa fru27 *ft the same time the mass of th 7*fg51uzf r bfn)jqh66 aqf2ye object was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly from rest to a speedl yf z45 wmu i-7.ylg6n,oot8i of 20 m/s in 10s. The magnitude of the net force accelerating theyu8olzn4yf6 t,wo.ii5lg7 m- car is:

  99.05: A tractor-trailer truck is traveling down the road. Tmw:wi )mu *xwb;d *e2khe mass of the trailer is 4 times the maswwmu k*w*b d;e:)x2i ms of the tractor. If the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explaiwlnbz1-:qpzt gjwws .uvu8z+/l+3 x 9ns why large tractor-trailer trucks generally accelerate much more slowly t1+ul8:s ujz9wxwvz+./nw zg b-3q lp that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a 2 kilogram b37mgie/uy; qh 01gdxball, giving the ball a velocity of 10.0 m/s. Which statement uig0gy7/e3hd m ;x 1qbdescribes the subsequent motion?

  00.13: An object near the surc3(b 91srn5yi lo1g tzface of the earth with a weight of 100 newtons is accelerated at5i cr3y1 n( ts9zb1glo $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is acj,:l+avsq33- kmbi vq celerated from rest by a constant force of 2400 N. What iss,3 3bv+qjvlqim :ak - 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 across a roug( qzf jyq*v 6wv961al ld.ceg;h horizontal floor before coming to rest. The frictional force acting on the block czg y.*q6d6;f j9qaw l(evlv1 is 3.0 N. How far does the block slide before coming to rest?

  95.38: A block with initial velocity qy4e zq2uz/*m4.0 m/s slides 8.0 m across a rough horizontal floor before coming to rest. The coefficient of frice4qmz/u z y*2qtion is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface wgw flp511yp9 ohile a person pushes directly to the right on the box with a force of 60ppgy w159of 1lN. 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 a i gli b+ge01y l9t,bt3epub)f091ygs+p.tt 8 m/s accelerates uniformly to rest on a horizontal surface. The block travels a distance of 12.0 m dbtgylbapsep t1 yf l10tig.tb + ,ig90+3 )9euuring 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 ice :dzxj 5*a5 qwlazx7o 7at a speed v with its brakes locked. It then hits dry pavement aa5qzlx oj: * wx7zd57and 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 a patch of ik a:qgum 1ih:3ce at a speed v with its brakes locked. It then hitkam1:q :3hugi s 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 stopi* d4seor,7tn by slamming on the car's brakes and skidding to a stop. How far would th,*i4ds ntre7 oe 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 (w qj+ astbs805zx/s/v-uzf ih2( bgxwing devices85stw bz(- v0f ja s/2xusz+gbhq(/xi. 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 w 0ff6rv-pwg k63t c(mwith 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 th6r3cw vw -k60fpgfm(te surface of the Earth at takeoff?

  07.21: A box slides to the right across a 5miss)zb+i)upu m .pb7o 6i41erfk6dhorizontal 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, rank the sizes m i+os)de1 fzim 7 b .u6pr5bsp)64kiuof these three forces exerted on the box.

  02.27: The diagram below shows tosc2i l*vd(c k*:1w emhree roller coaster tracks of equal length. Assume that on all tdke(v 2s lcm1w*o:i *cracks the roller 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 coaster tracks of oxy 0n)cquk,9equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictio)oq0nycu9k ,xnlessly 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 frictionlessly along thhhn:dl8y wkjn 3- ;/zqbtgyaq 2-ie 95e curved track from point A to point C under the influence of gravity. What would be the direction of the cart's accele hhqga2k-:dz /q;wlt958bijy y n e3-nration at point

  02.40: A box with a mass of 50 kg is dragged across the fl x1r7ie3bj4al oor by a rope which makes an angle of 300 with the horizontal. Which of the following wo1i374j rxel abuld 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 diagram?

  04.40: A 6.0 kg block initiall noqq* q:0j z3mhtf0u8y at rest is pushed 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 block after a timeu0 zm j0qntqqf: *8o3h of 1 second?

  05.10: A homeowner pushes a lawn mower across a horizon-fwfe qk83*tx tal 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 various force magnitudes, W,3x*tkfq8w- e f f, N, P is CORRECT?

  06.14: A book leans against a crate on a table. Neither is moving/;fgwwp r*g;cjn2 /ycu ccm88. Which of the following statements concerning this situation g8c;fn*/rwm ;8 gju2 wyc/pc cis CORRECT?

  06.15: A crate of toys remains at rest on alas 3f1m,*wrs 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 responsa3sfr* ,ml1 swible for the crate’s increase in speedup the hill?