99.36: What happens to the inertia of an object when its veloc-: kvcx3b /bqu6)9i r chqly*x1h6dli ity is doubled?

  02.14: An intrinsic property of matter is one that does not depeuf hxc/gfuq3d7 * n7n9nd on the quantity of man7qc d/x93*ff7hu n gutter present. Which of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface o)fvsgt*lf0 ( uf the Earth. Assume the Earth has mast*us0( vl) fgfs $5.98 \times 10^{24} \; kg$ 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. *pkgh*5 7ta/fr2,4lp frrz c vWhat is the magnitude of the gravitational force acting of5* 2rg7*,lrkr apfht zv4c/pn 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 tn3ata (n9 er mu8bjh/. 9kw(xlo increase while its acceleration 3(a n.ne rbkatj wl(hu98m /9xdecreases?

  00.11: A certain particle unxo.,ndo k2 lor**9ewudergoes erratic motion. At every point in its motion, the direction of the particle’s momentum is ALWAYo,k ru* 2l*nwo9edxo. S

  17.14: A block is suspended in the air at the end of a string held by f+-;l agqaw6 dwn5yw 9a 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 string on the q f9n a+wdw-lgw6;a5yblock?

  07.18: In which one of the fol81mg8/5tonj + .pv luoidzcb z,lll9t07su(xlowing situations is the net force constantly zero on the obsznl(,9 7i. lbl8zt0 /xpt18cvu ojuod5l +mgject?

  13.28: An object is n.e4.ejgl3 i +yq6r(sbss g2din free fall close to the ground. A person intervenes and slows the object uniformly to rest. Which one of the4(. 6 enger2yqgj +.bssdil3s 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, F1 f65w,rz l( -z e3, pryozy3nziof 30 N, F2 of 50 N, and F3 of 70 N, acting on it. Th3 w5rzizoze,p(zy r ,fl3- ny6e magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons 2/8 zc,ddb;c2a vptk lcan be combine to form a resultant with a magnitude of which of the followic,28 d/c;lkbpz 2vtda ng

  10.06: Which of the following statements is most d )r f xz/r4kqtda:,jdc/ +nldzz+0r0closely associated with Newton’s T )r q+za/+nldj r zdck0dd:/tzxr f,04hird Law of Motion?

  95.06: The reaction force does not cancel the action force suh)oe1s/q.uwl p7s1;zl)l w because:

  14.14: A box rests onrhm:apr +.31brdp0qy 1*rmzq the floor of an elevator. The elevator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational force acmrb: p z1qr .myr1r*q dp+0ha3ting on the box by the Earth?

  15.15: A skydiver falls dow1rm 8mc:v qn8enward through the air with constant speed. Which one of the following choices correctly describes the Newton’s Thirdq vm18ncmr8e : Law pair force to the air resistance acting on the skydiver during the fall?

  06.08: A baseball is thrown by a pitcher wiiv3tfle qn3354w,yd bth a speed of 35 m/s. The batterswings and hits the ball. T i3f yvwtb3end,lq534 he magnitude of the force that the ball exerts on the bat is always

  11.13: A physics book sits at rest on a table.-h. j*alsxf.e cv5;6x b5ismj On top of the book is a calculator lsijxcv;hf.56* -x5 se.am bj, 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 book?

  05.06: The students in a Physics :20cx5+ mk 5vf-qn:ixiww*9udx vovzI class were in lab conducting an experiment related to Newtonx2wx 5wdv5mvu0: v*f :ic zxk9q+-noi '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 on an objeckxt h,*a vr*:lt were doubled while at the same time the mass okla tv*r*,h :xf the object was halved,then the acceleration of the object is

  96.15: A car whose mass id dggqi /u2:f4s 1500 kg is accelerated uniformly from rest to a speed of 20 m/s in 10s. The magnitude of th2/ufqdg: dgi4e net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass of th):;z,zj h m8m0w n6 id0wngjdfe trailer is 4 times the mass of the tractor. If the t;wwdn0im zmn 8,zh:fj 06 jgd)ractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best expla:)-6fajxiru1om 2 f gbw2he,eins why large tractor-trailer trucks generally accelerate much mo whu2-fr,f )gee12 ai6 j:bmoxre slowly that automobiles?

  99.19: A 50 kilogram skater atvl ak8 .q.fz3 r 2achzmc7x 4pe6zzp53 rest on a frictionless rink throws a 2 kilogram ball, giving the ball a c2 ahraxpm.v6z8.3 fzz z7q3p lke5c 4velocity of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surf. .sbx/sat*ud) s:gvn ace of the earth with a weight of 100 newtons is accelerated ats.xnavgs):. bts/* d u $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated from rest by a constant forcmpt t4by*1/ire of 2400 N. What i* tb4ypm /i1rts the speed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slie, r*j:x 8(1yora;o tbmj ar:o o,ud:sdes across a rough horizontal floor before coming to rest. The frictional fox:s(ud,b8t1 ajjoam:r,; r:e ro*y oorce 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 jaz5y(y, r 3inyc/v( s8.0 m across a rough horizontal floor before coming to rest. The coefficient of friction is: jarc,(5( nsy3vzyy i/

  09.21: A 20.0 kg box remainsj yd cnz73l9/1q ;bpih at rest on a horizontal surface while a person pushes directly to the right on the box with 1jd3h n ;c pzy97b/lqia 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 uniformly tonhuk.:,8fjqxl) *o nz rest on a horizontal surface. The block travels a distance of,f oh )*kq:l.zx8njun 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 across a patch of ice( 5qgygf cm ) p3cwv-)e r4:u/ipvr.os at a speed v with its brakes locked. It then hits dry pavem gwu o)53pc f()yc.vgqvie /m:-4psrr ent 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 m slides across a patch of ice at a speed v with its briccunpi98 g6, oo4bdvo2kp; 0o/gbfmx p7 x3 )akesd3ogpkb o9gv2;pmx47/06)8 oin cfxiupboc , 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 μ .

If the car had a speed of 2v, it would have skidded a distance of

  04.32: he driver of a car makes a5j8fo 8a7g rb/m8axxin emergency stop by slamming on the car's brakes and skidding to a stop. How far would the car have skif7r ogax m/85jabx8i8dded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully control each of tm dciek 9kte*b1 h6*0w,l -gvqhe following devices. Which of these device ,kk0e t91lbwvm6qi*e ghc-*ds 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 weigvh)rg);3ua rgk,pfs;b:rtw *ht of 15000 newtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s g;ufs wp ktbvgrh;:a, )r3) r*to 36 m/s near the surface of the Earth at takeoff?

  07.21: A box slides to the right acro:7skk*p3jukrcttj 18kk7 8 a xss 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, rank the sizes of these three forces exertedk7k3 pcstua7t x:k8k18rj *jk on the box.

  02.27: The diagram below shows three roller conk ;j :cctc9g55l: epxaster tracks of equal length. Assume that on all tracntk;:cc j x9 p5ec:gl5ks 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 rollpfq0 t/yj fc4a 8srwr/f 4zd4dw28f5cer coaster tracks of equal length. Assume that on all tracks the roller coaster carts staw5cp4fyd2dwtzsrfa4 /8f4j /8 f0rcq rt 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 cartrollsr*ro;te r(d4e frictionlessly along the curved track from point A to poir;(tr *4eo edrnt 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 vt7zr:w,m4 6uo7mxqfam e-s7 floor by a rope which makes an angle of 300 with the horizontal. Which of the following would be closest to the coefficient of kinetivst ewfo7m:-r, 7umqmz 4a67xc 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 initially at rest is pushed against a wall /lv8u 0+txjm buq 0isip (+x2rtdm095zt cqm) by a 100 N force as shown. Thecoefficient of kinetic friction z0+2tx/8+p 9vqiuq br dtju( m)l05sm0imctx 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 lawn mower ac:07i6gbbd lt4zd*m wtross 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 necb40b dlt6 z*gmwt:id7essarily 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 against a crate on a /8iux9 d9 46umt+ga w h(s lm-mrrelh6table. Neither is moving. Which of the following statements co+h6 9/(x9 usrh4md w-matl6lum i g8erncerning this situation is CORRECT?

  06.15: A crate of toys remains at restzo p-j / n,je*9.gdpwu 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 force is responsible for th/ -djju,9. *pezogwn pe crate’s increase in speedup the hill?