99.36: What happens to the inertia of an object when its velocipl0/3ttn7e b rty is doubled?

  02.14: An intrinsic property of matter is one that does not depend on the qu*fl: e 5up,nka:w m7ytantity of matter present. Which of the followimnkt*a,ul p:w ef :75yng properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface oy di,u ej):+ds9pcu 4of the Earth. Assume the Earth has m4ejyp:d9,cu s + )diuoass $5.98 \times 10^{24} \; kg$ 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 ne*;ssnhbwovc4- lm5 f-ar the surface of the Earth. What is the magnitude of the gravitational force acting on the e;b4 sv*oncf s5wlh-- marth 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 whq(/re0 3ix grdile its acceleration decreage/ri 30dxr(q ses?

  00.11: A certain particle undergoes erratic motion. At every point in its mozhi8,r ;2mwu*w y zz8z(xwi:ztion, the direction of the partzx i,(z2mu8z iw*wrz: ;hz8yw icle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string held by a person. epe9w:e2w 7vjpv;hx fw/q8ib (oz+ 5pThe person pulls on tbveh xp2qpw+wo i9pe:z/vw;7(5j8 ef he 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 thew+2qp t+;d2icwmmk,cd 0 0wowcbh6(u following situations is the net force constantly zero on the objecbt +wc2 6d(;uqi kopc d2m00+wc wmh,wt?

  13.28: An object is in free fall close to the groune(c k05zmv:fs d. A person intervenes and slows the object uniformly to rest. Which one of the following statements must be true about the magnv(5k0 :fsemczitude 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 t(:hi4p 6kedjt)irk *three forces, F1 of 30 N, F2 of 50 N, and F3 rtk: 4(kiep*)6 htidj of 70 N, acting 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 to form a ru78adm3yq 0j;mb34a*vssig-vjt i 4sesultant with a magnitude of which of the followin4s*84g a 03v ua jbdy7tv3-msimsiq;jg

  10.06: Which of the follolwh jxfym.-i+1-fnce 8 .bjq)b,2fz dwing statements is most closely associated with Newton’s 2n y-.8-+ijcf mhd 1fxwjbl,.b ezf) qThird Law of Motion?

  95.06: The reaction force does not cancel munei :3xzq,fq9:s *nb5e gi5the action force because:

  14.14: A box rests on the floor of an ewr hkqig+6g hjv*a y (:pk(3 9:c6sgtdlevator. The elevator is accelerating upward. Which one of the following choices best represen* t 9r6jc:ka6p+ hqhsgg 3(k gvdiy(w:ts 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*n m mdla4nxu55, qao: constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance acting on the skydiver duri:mo5dann *u4 5xma, lqng the fall?

  06.08: A baseball is thrown by a pitcher ) rk:*z a6x(a:trsqgawith a speed of 35 m/s. The batterswingxr t 6s(aaz::grk)aq*s and hits the ball. The magnitude of the force that the ball exerts on the bat is always

  11.13: A physics book sits at lf4)3f7u tz g ayfzkuq*7/dmn( g:n e)rest on 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 taaefmd4nyfuq3())z 7 nglt/*7 kug:f zble exerts on the book?

  05.06: The students in a7tl n60qaf (yb Physics I class were in lab conducting an experiment related to Newton's Second L(0 qt6fny b7laaw. 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 r* :6p)w whq 6yupfpifz-cf2n*e7lf 8 on an object were doubled while at the same time the mass of the object was halved,then the accelerat2*i:wz - n7e wr)8pf6clf f6*hypqu pfion of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly from regd) 9ky vr-ulv,46n p oqhis;ayz ;z0.st to a speed of 20 m/s in 10s. The magnitude of th6; . zsq-d z,lyio;y) vpa0g9r4hnkuv e net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling7 19ktdm)z,j 36f/fu wpy hav7l ;doqc down the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, tm7ck,o13ay; wlh7udt 9/)v6 dpqfz jfhe force that the trailer applies on the tractor is

  99.16: Which of the following principles best explains why onh142(pf1 na0 n u(an2bwbqu large tractor-trailer trucks generally accelerpnwuu4b0q(h 1(nafn1anb o22ate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rrg3pe qwg(p 6+ink throws a 2 kilogram ball, giving the ball a veloc(6e prq +wggp3ity of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface of the earth with a weigda a;*vakpum:* k y 9w:b:qxn+ht of 100 newtons is accelea+q*;kd :wuapvm::y9k b a*nxrated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is y at7v*r;819rj/xoiy ; tozdy1200 kg is accelerated from rest by a constant force of 2idy 1o/ oxzy;rt;*7t9av8j ry400 N. What is the speed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with in.+ag;zrukiq jf0t)c6yy0 c/iitial speed 4.0 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 slide before coming to rgk/ayj uq+yif0) 60c.t ic;rzest?

  95.38: A block with initial velocity 4.0zjtwp;mm9h*jc2+ vc: m/s slides 8.0 m across a rough horizontal floor before coc :w+z2 tmcj ;vj*hp9mming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizoi524 qij -n/33f3 ( gmdfv3qkjyargco ntal surface while a person pushes directly to the right on the box with a force of 60N. The coefficient of kinetic friction between the box and the surfa mg3 52cjdj/qiy3(kf3 agfrvo3 -4qnice 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 u;km6mf a c:rz*1cel 8* d8eoqcniformly to rest on a horizontal surface. The block travels a distance of 12.0 m during the:8;* 6qak*cdem ez mfc 1col8r 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 at a speed v with7m txxb 5t z)6r ;0si30)zur;ojnehp w its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic frictiont )zz3rpx ; um07erwh)0s6xbjon;5it 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 *q;m : ah7o2pivygrp *v with its brakes locked. It then hits dry ppa y:rp2gmi o7qv; h**avement 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.rl ta8t gg) )8hcic xada-45s emergency stop by slamming on the car's brakes and skidding to a stop. How far would the car have skidded if it had been traveling twice as ggrc x) .t c a-ad8tlh)sia845fast?

  99.39: The driver of an automobile must carefully0; 8f*uwedm( zcacev(qukb-0 control each of the following devices. Which of these devices can cause an acceleration in a movi 0q8-c u(z e*(vwkc0fmud b;eang 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 15000 newtons is 24000 newx;hr-* md9cps3fx(ws vb9f4/1q a ltb tons. About how much time is needed ta 1w;vx4qctdb(-p9xf f* l b 9srshm3/o 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 xwpb4,el q 1:my/8/nolx q6t dto the right 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 llq m4xyn /o,q: wlt/1 x8dpbe6eft, 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;p5v.r j:wchhw r,zjxm .9ab( three roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevhw; a (,z9c5r .j bjp:vm.rwxhation 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 lengt4l pix. a4m8jch. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves fr 4.xcji8pl4m aictionlessly 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 frahf(s0irb m xti*6ghu 6,8yt30c bmz+ ictionlessly along the curved track from point A to point C under the influence of gravity. What would be the direy3h ,br mch f* z6tug(6a+i0mibx0t8s ction of the cart's acceleration at point

  02.40: A box with a mass of 50 kg is dragged across the floor rg-9 2frx6p:i)y)l5xof lf52tiaog tby a rope which makes an an i lf5 tirlfp-f9):r5gag)x26 x yt2oogle 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 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 by oo f8p:m h(fd: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 ofpo :mfh(8d: on the block after a time of 1 second?

  05.10: A homeowner pushes a lcfk.hv o1vuz5n g 2)s+awn mower across a horizontal patch of grass with a constant speed by applying a force P. The arrvn+vgk1ofc. 2h)s5zu ows 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, f, N, P is CORRECT?

  06.14: A book leans against a ow4 uyifrie760pmg *gco-1s5 crate on a table. Neither is moving. Which of the following statements concerning this situation ii u5sp my-g7f*ei gr 460woco1s CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is pulle -qqg:b;, 0syyn7grl9tsrt7md up a hill with an increasing speed. The crate is not fastened 90;ytg,ryr -s:s77 nqqmb gltdown to the sleigh. What force is responsible for the crate’s increase in speedup the hill?