99.36: What happens to the inertia of an object when its veloccpxn* 8twg,fh 7ym1* plc2-ky ity is doubled?

  02.14: An intrinsic property of mattqsvgw :ce 8 mf01c3fx3er is one that does not depend on the quantity of matter present. Which of the following propertie3 3wxfqc mv10fe8gsc:s is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume the Earth haoy79ej)+qfstbnb exw9f j a9-:4ucp:s masjjexb 9fb )-ptnaos :w7c49fe:+uy q9s $5.98 \times 10^{24} \; kg$ 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 free6l ir;og8py9 r fall near the surface of the Earth. What is the magnitude of the grarg8 9py6r ;loivitational 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 (z4pum..+yukm m * wlvh.5p ks.pyk)qits acceleration decreases?kk)s h*.mmymqlpvpk5 y.uw (4.p u +.z

  00.11: A certain particle undergoes erratic motiok,120 ( piogkck l)yggn. At every point in its motion, the direction of t( ,2 pgglk1 o0y)kcgkihe particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the ede ie8b0jl9u 5nd of a string held by a person. The person pul 8uedb lj50ie9ls 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 block?

  07.18: In which one of the following s;o k5j-tsr y+86dz jyah4z.ayig s;4kituations is the net force constantly zero on th5 yk o yjhia8.;s4gt4rds6 jyk -;zaz+e object?

  13.28: An object is in tu+am .vuzr,9h-,f (ab fel99 mx:ntwfree fall 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 ub h xvza+ twu,mfa9l -(9e9,f:nm.trthe object’s acceleration is a and the magnitude of the acceleration from gravity is g.

  98.03: An object in equilibrium unb,*l on29g axo5xy; has three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N ya,* no92 5xonbxugl;, acting on it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 cxa r,lm,j j2*Newtons and a force of 10 newtons can be combine to form a resultant with a magni,jxl a*c,rj 2mtude of which of the following

  10.06: Which of the following stat3ml2ps h ;0fe0vgezlc9j05 pdmg;n0 dements is most closely associated with Newton’s Tpljmd05 0h9 ;0;glg2 n 3sec 0fepzmvdhird Law of Motion?

  95.06: The reaction force does not cancel tfjtcos6slomz( q2c0 , dn4 ,uny30gy,he action force because:

  14.14: A box rests on the f 9h0p5; ng oflm6j) hnkp.7vi ysehrz+( yx7b0loor of an elevator. The elevator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to tnhz m) lxk(y if6v7o;0h5re 07jpp+n.bs9yh ghe gravitational force acting on the box by the Earth?

  15.15: A skydiver falls j0dl59q..vel i a+ jyedownward through the air with constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance9.ea+jdl jqev. i ly05 acting on the skydiver during the fall?

  06.08: A baseball is thrpp; u,gz/mjm;f r:) twown 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 thefpuj:r , zmwm)t;g;p/ bat is always

  11.13: A physics book sits at rest on a table. On top of the book is a p ch13x;:ymrp g: ,qrycalculator, also at rest. Which one of the following choices is the Newton’s Third Law pair:yx p g3,qc1rh;m:py r force to the force that the table exerts on the book?

  05.06: The students in a Physics I class were in labai * r c9bkn8ti-:dw+g conducting an experiment related ttni id w*b:9acgr+k 8-o 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 on an object were doubled while at the same timed gd6rk0,psesq :kw .14sn*:b8zp icr the mass of the obss :wqk6 bine r:18k rdp,0gz4ds*p.cject was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is acceleratek 2n )2g9 ddtkx0och8yd uniformly from rest to a speed of 20 m/s in 10s. The mag2 dg)tkckodyh28 9x0 nnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is,65qg/ 8i gqzdx3lu fk traveling down the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates ford8q56f,i gug/zql3 xk ward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explains why large tractor-trailer ;fm-. ;tmim xwk-o,ksakiq++w5dd5o trucks generally accelerate much more slowly that autom--.,;ktwm a5f5owkism qod+xm+; kidobiles?

  99.19: A 50 kilogram 78ptj np o.l4tskater at rest on a frictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement describes4otn8j 7tpl .p the subsequent motion?

  00.13: An object near the surface ofw*b 7ntx)q+)r mdz w,u the earth with a weight of 100 newtons is acceln*, uwwtz)r7 )+mxbdq erated 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 rest by aurkl kgnxa t+*o-0y0( constant force of 2400 N. What nakrtlogy+-( ux* 00k 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 s5i*yo+h+ vp f f*fr4 ghlgxj36lides across a rough horizontal floor before coming to rest. The frictional force acting on *l6h+g+4*pgf yr5f3v xih jof 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 c 5oe1tw dn7sz-rb9)t slides 8.0 m across a rough horizontal floor before coming to rest. The coefficient of frictiot) 579nrew- cobsdzt1 n is:

  09.21: A 20.0 kg box remains at rest on a horizontal surfackpe +yq92u8tbe( w k11g*qi yle while a person pushes directly to the right on+l1tp8q1 uk92* wq gey by(eki 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 abp4f*w f /i5pnccelerates uniformly to rest on a horizontal surface. The block travels a distance of 12.0 m during the slide. Which one of thp/f b 5w*pifn4e following choices best represents the coefficient of kinetic friction between the surface and the block?

  00.21: A car of mass m aooo+(y j07y .f 7uqgkslides across a patch of ice 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 dry road ok0.q u j +7o(g7ayyofis μ .
If the car had a mass of 2m, it would have skidded a distance of

  00.22: A car of mass mjynk ( h+7z9+ibrw5w ry0 e5wo slides across a patch of ice at a speed v with its brakes locked. It thewry0o 5enr+hiwy9+ zbw7k5( jn 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 an emergency stop by slamming on the car's bdc a rk0i 2okptk 9x25rg8blmgadu1p e)p.3.;rakes and skidding to a stop. How far would the car hakx d)8 1 5ap.cg2um2ekid3r; a o09ptp.lrbgkve skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully control eac)vi6nx x+o r7bxyk(e2j+v,b gh of the following devices. Which of these devices)gb xviv+,6+(jy7kb2r xno xe 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 weight of 1500 a ,v2t8v0zrb z2j9zhh obd,j80 newtons is 24000 newtons. About hoj8jdt zz ov9 82,,ahv0hzb br2w much time 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 right across a horizontal floor. A persone -rdg ouxs19+ called Ted exerts a force or-9esx+ud1 g 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 exerted on the box.

  02.27: The diagram below shows three roller coasmv apk5/*v.ffo+ a7stl r.qq+ter tracks of equal length. Assume that on all tracks the roller coaster carts start fr*.r 5qvso. tf7a/+pfkm q+avlom 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 equal lemo9-emu27v)ky 4y4s lnvym*jg c9q6 oc3kl+kngth. Assume that on all tracks the roller co9 j7 ymc4+ky slvko4mgvo y2-q 9*36emnlu)kcaster 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 cartrolls frictionlessly eb*tsvf4 6 7ib -l9udkalong the curved track from point A to point C under the influence of graf *47ibksv etlb-u9d6vity. What would be the direction of the cart's acceleration at point

  02.40: A box with a mass ey1ryy : pk 3kh n+kd498,cdiiof 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 and the floor if a 250 newton force on the rope is required to move the crate at a constdikc9pkry,h 1 kdy8n y4e3:+iant speed of 20 m/s as shown in the diagram?

  04.40: A 6.0 kg block initially at rest itrw*/bkew0nz- 5 fv0 eo4 ouf rrk9*m*s pushed against a wall by a 100 N force as shown. Thecoefficient of kinetic frictionbft5*rfv w /uer *r4e*ook0zw9m k0n- 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 across a horizontal patch of grass with r4he 1k qx.r(n3. ;h0czghia wa 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 rgh h1 nhcw.e3(0i; kz.4qaxr relations among the various force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crate on a table. Neithz6i + :gg2vl-hh z/suger is moving. Which of the following v h g+ h-uzg:lzg2/si6statements concerning this situation is CORRECT?

  06.15: A crate of toy4ddq;:ee 153vz w1 ympy-sxrws remains at rest 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 rs-w5 yqprd:x ;mzw 1d34ey v1eesponsible for the crate’s increase in speedup the hill?