99.36: What happens to the i) ,pe*shi qvtgmg:s+ (nertia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one 5c jgn8o .xuy/.9gu-.niwk7 scw(sygthat does not depend on the quantity owkn 7yw.u ( isc.59xg ujnyco/ s-.g8gf matter present. Which of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder res ic-mg y.fl//gts on the surface of the Earth. Assume the Earth has mas .l/-fgmigyc/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 yy/1 0 njdf rh,yor*h0the surface of the Earth. What is the magnitude of the gravitationdf1jhyo* 0r yyh/,nr 0al force 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 increase while :s8 x l8ggf;iipdsr/pkt5a25 its acceleration decrea r f8 kx5gip;dpa:sst2lgi85/ses?

  00.11: A certain particle undergoes erratic motion. At every point in its m- )n 37wszr 2zc14q f(oskrxgzu) mlx*otion, the direction of gx r3ur*ols 4z(- n)1q2sxwz7)mzfkcthe particle’s momentum is ALWAYS

  17.14: A block is suspegx7 z,gwcl-sbyzk 18/nded in the 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’s Third Law pair forcyklszb cg 1/wgxz- ,87e to the force of the string on the block?

  07.18: In which one of the following situations is the kypp-: 6wd*uwnet force constantly zero on theud wkyw: *p6p- object?

  13.28: An object is in free fall close to the ground. A person intervenes and ytxocsh1t+;1 )n,* d c.wmfxuslows 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 accelerati cyc1 *tnw1;s)do.muhf + t,xxon from gravity is g.

  98.03: An object in equilibri-n9jg8jn ayx v fw4epae3*45s um has three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, actingx4nj3 jap58sa 4gn9- efyv*ew 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 tf b3sw3..g*f josnz /to form a resultant with a magnitude of which of the ff z.gb3j ss./o3w* nftollowing

  10.06: Which of the following statements is most closely associated wwhy4 wzd)bzr/7 i:p 5xith Newton’s:y5dpizz)4wrx7h/ w b Third Law of Motion?

  95.06: The reaction force does not cancel the action force becaucmk 19ut2 57sfnax9k:dj rbv-se:

  14.14: A box rests on the floor of an elevator. The elevator is accelerati9 ;v,nsqdw-4xc *jz1.f gdnbing upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational f wj,-9q b*;1zdxn.ig4fcnsvdorce acting on the box by the Earth?

  15.15: A skydiver falls downward through the air with constant speed. Wa boq4srnn(h t-/bv5+ hich on(n5hbntq+4a os-b /v re 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 j 1s6vh(e 6n:d uw*b;yesbo.vthrown by a pitcher with a speed of 35 m/s. The batterswings and hits the ball. The magnitude of the force that the ball exerts on the bat is unv s*o;(ejd 6v 1y:bwb.h6esalways

  11.13: A physics book sits at rest onhryg ciml66;x.-25t (jdj dej 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 exertj5ddhr l j ;-tjc2x66myeg(i.s on the book?

  05.06: The students in a Physics I class were in lab cony1n b8tv h,t4qa9jh:fducting 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 t:hq1h984javt ny ,fb students make?

  99.03: If the net force on an object were doubled while, 9ej ,achh1jn+yhy:adfv;u mx9m - j* at the same time the mass of the object was halved,then the acceleratiojud-fy ,1nhya9x+ j,:*hham9 cmev; jn of the object is

  96.15: A car whose mass is 150 81qhr;1ifuuf0 kg is accelerated uniformly from rest to a speed of 20 m/s in 10s. The magnitud1ui;f h8q1uf re of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The maxijx g yp1xu5 9qp4y i d0kq56.klo2s7ss 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 iskodyxxxk9q1p 52l 75.s6 u0pg yq 4jii

  99.16: Which of the following principles best explains why largg zq .hhp:iuedx+:(3 le tractor-trailer trucks generally accelerateq:z (.dphhe+i: g3u lx much more slowly that automobiles?

  99.19: A 50 kilogramt: dyrs npt1p8qt qy.(q+ zc)4 skater 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 su1 y4(tp +qqzpt:t.r 8)dyscqnbsequent motion?

  00.13: An object near the surface of the earth with 8mgrlb;wvb/wgn x8c11q +)ky a weight of 100 newtons is accel; /blcxw)qgym+gb818 w vr1knerated 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 rjm3vtw lb *n.p+ipk/) est by a constant force of 2400 N. What is the speed of the car 8.0 s aftert +p im/)pjvl.w3kn* b beginning?

  98.32: A 3.0-kg block with initial speed km 99pcw sajmoe10z4:e,6 qwc4.0 m/s slides across a rough horizontal floor before coming to rest. The frictional force acting on the block is 3.0 N. How far does the block sl co 4c0w:e9am1j9zmseq,k w6pide before coming to rest?

  95.38: A block with initial velocity 4.0 m/s slides 8.0 m across a 1ioqr( - lz) ohwi4y9c2u(zuk rough horizontal floor before coming to rest. The coefficient of frictio(izrwo 4q)-y z9hckoi12uu ( ln is:

  09.21: A 20.0 kg box remains at rest h vjg9pqt,hb;-22v5 m( tou( *j2kzmedczn(gon a horizontal surface while a person pushes directly to g9c,qjv-to m;z( h p(2z ke2*dnjtv2u gbhm(5the 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 unifoepsdf1ch g/9 9rmly 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 reprdpe9g 1/h 9sfcesents the coefficient 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 its i7d 1wu/4io e q)-cimbbrakes 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 road is 4q7e icm b id)u-/oiw1 μ .
If the car had a mass of 2m, it would have skidded a distance of

  00.22: A car of mass /kvzhgc-ktxa: 7x /mey 18cp+m slides across a patch of ice at a speed v with its brakes locked. It then hits dry pavement and skids to a stov+cxkzekg:t/px a8/17y h-mc p 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 makebrc:rtmd(;l c: o6 b8os an emergency stop by slamming on the car's brakes and skidding to a stop. How far would the car hao odbrbtmc8:r c;l6(: ve skidded if it had been traveling twice as fast?

  99.39: The driver of an 9jz3)0dxo sqfautomobile must carefully control each of the following devices. Which of these devices can cause an acceleration in a moving cd90sz xj)oq f3ar?
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net forcehm7r-mop;cc ltj;c8 / on a rocket with a weight of 15000 newtons is 24000 newtons. About how much tc -r7pot;m m8c; chl/jime 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 r a+mk4 cskljh 89p+wl*5vrww,ight 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 rlakkmw+,v p*4ww + l8s9 ch5jas 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 coasters.0li9/5qxdp 4yadk;uxt 8 t8i 1kpzchfm.t ; tracks of equal length. Assume thatt/f05m ;dx8;9p.k.qdta ils8yi kx p uh4c1zt on all tracks 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 rol9+arcx 1 mk5jic n),7 rcs.xpwti0rr,ler coaster tracks of equal length. Assummnk sirr+90cccij1r5 ,a7xt .pwrx),e that on all tracks 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 reach the finish first?

  02.29: Assume the rollercoaster co26jff: 2xineartrolls frictionlessly along the curved track from poife 62ixjon: 2fnt 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 fl2.mw4p 7n-.vv t uqdomoor 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 and the floor if a 250 newton force on the rope is required to move the crate at a consta.w q nu4mo p7-vm.tv2dnt speed of 20 m/s as shown in the diagram?

  04.40: A 6.0 kg block initially at rest :jerkbi h1,*y is pushed against a wall by a 100 N force as shown. Thecjbyhek, r1*:ioefficient 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 second?

  05.10: A homeowner pushes a lawnx9h d2 v ez9ts., dbzc6yez wlfd22;(y 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 the following relations among the various forc9dyd.zzecy 2xz;2ld9h 2v6s e( t ,bfwe magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crate on a table. Neither is movrq9 ;6 honjmz,ing. Which of the following statements concerning this situation is ;q6ozh ,nm9rjCORRECT?

  06.15: A crate of toys remains at rest on a sleigh as mu eaagubs *) 0m;4 8iajtkr4,sm+-rhthe 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 ss u4)hkg 8 atms aei*,a;mu-0+jbm4rr peedup the hill?