99.36: What happens to the inerti*:0lbgnjbc t;k.yu 8y a of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not depend on the qykww 2g+klzh8h 34g9+ce4tm euantity of matter present. Which of the follow4 ykehg+t h zw2k9e34cw+8lmging properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume thvwp,,ln 8*bizj97gpr e Earth has mass nv wgi p*,lrj78zb9,p$5.98 \times 10^{24} \; kg$ 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 s hc7gb 5 1pzyoga*nq6.urface of the Earth. What is the magnitude of the gravitational force acting on the earth by the sphegnc qz17* g.5h6 obaypre? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to i; aetpdwvo+e. ty6 2b1ncrease while its acceleratio16dtv.beot e2w ;p y+an decreases?

  00.11: A certain particle undergoes erratic motion. At every point in its8 ln:;z3 aib4 v-pwmdm )iiw/o motion, the direction of the particle’3)m d;zi v miw4i8bn-:o walp/s momentum is ALWAYS

  17.14: A block is suste(e.su .p/h c d:h+n( wtl4mupended 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 force to the force of the string 4w. .+ hhsen:u e (mctdlt/pu(on the block?

  07.18: In which one of the following situations is the net force constantly zer8d9 5/p qxhgd 76 e+dy.q ss.qk6gocaro on thegoq957c .qy dsxq+dps./8gd 6 r6aekh object?

  13.28: An object is in free fall close to the ground9 ca1 va+t:sir -cr ;r;r3uabe. A person intervenes and slows the object uniformly to rest. Which one of the following statements must be true ave;cuc aa;r9r r1 :r i-tsab+3bout 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 of 30 N, 8 :mmb5: 3 ttv8kpupz(s pih w:8f.phlF2 of 50 N, and F3 of 70 N, acting on it. The magnitude of thebm:i.:8v3pl : k8u p5fmh( zpt ths8pw resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can be combine -4bhrv vbr 8lo13cex) to form a resultant with a magnitude of which of the foll3h-blecv81)r rxv 4boowing

  10.06: Which of the following statements ( ev. ies(*n/hzgti ,ais most closely associated with Newton’s Tagiv,i(s he/n* ze(t.hird Law of Motion?

  95.06: The reaction force does not cancel the action force becauwnw. a.p.p d og)v1je6se:

  14.14: A box rests on the floor ofs hmii +kn3;9y an elevator. The elevator is accelerating upward. Which one of the following choih3si +n9 k;imyces 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 wiyku+,g i, lz*ith constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the a l*+ig,yz,ukiir resistance acting on the skydiver during the fall?

  06.08: A baseball is throw rplavw6j ep/3+6g+ytn by a pitcher with a speed of 35 m/s. The batterswings and hits the ball. The magnitude of the r l6/+6t+pj3w y vegapforce that the ball exerts on the bat is always

  11.13: A physics book sits at rest on a table. On top oe 66e;l z8vodyf the book is a calculator, also at rest. Which one of the following choices is the Newton’s Third Law pair force to the6o86dzeyvl e; force that the table exerts on the book?

  05.06: The students in a Physics I class were in lab conducting an expi:xq:; sxr 6rs5k ig9ceriment related to Newton's Second Law. k6i sr qr:x;s :ig9c5xThe collected data were displayed on the graph at the right. From this graph, what conclusions can the students make?

  99.03: If the net fo *:ytep)qoc m+rce on an object were doubled while at the same time the mass of the object was halved,tqtcm:eo yp+* )hen the acceleration of the object is

  96.15: A car whose mass is1rx 9uh5qw6fl 1500 kg is accelerated uniformly from rest to a speed of 20 m/s in 10s. The magnitude of the net force acce9xq6 1wrfh u5llerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The masvgf 5oon r1iiy,z(z: 9s of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the trailer applies or :o9(o1, yfvgin5izz n the tractor is

  99.16: Which of the following principles ;sz95lurj0 tzozz19 a best explains why large tractor-trailer trucks generally accelerate much more slowu o51za l;9tzjzs09z rly that automobiles?

  99.19: A 50 kilogram skater at rest on a fric00 v7: obqbdtqtionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement describvqdb07: q0 obtes the subsequent motion?

  00.13: An object near the surs(motjuaq.m8ap9t)xxe fj 39.a*k ; p face of the earth with a weight of 100 newtons is accel aupx j9fjq m)tm9; o.a3*st8.(apkexerated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kgez .jz -5-oybfd*2 qnd is accelerated from rest by a constant force of 2400 N. What is the speed of the car 8 enq-fy doz-*jbd52 z..0 s after beginning?

  98.32: A 3.0-kg block witei c3z7u(rp ;fh initial speed 4.0 m/s slides across a rough horizontal floor before coming to rest. The frzepi73(;u fcrictional force acting on the block is 3.0 N. How far does the block slide before coming to rest?

  95.38: A block with initi6 )upd,sm l acfmf0m;8al velocity 4.0 m/s slides 8.0 m across a rough horizontal floor before coming to rest. lda;m6,mu 8fscfm0) p The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a htg*(avjp7r19:j n7o4metvw n orizontal surface while a person pushes dire vn 7 *ta(r9vmg4 wjto:1n7jpectly to the 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 uniformly to rest on a1 mk4tw, aj.ns horizontal surface. The block travels a distance of 12.0 m during the slide. Which one of the following choices btm k.s1 wj4an,est represents the coefficient of kinetic friction between the surface and the block?

  00.21: A car of mass iy : d,tssi;7gm slides 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 betwegsts7 ;: ,idyien 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 itsyvy k2jkbqem6:t0nab;j fek ,rf4.- 0 brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic friction between q2k,r mj6ka vfn- b;0yt.bj0:fky4ee 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 1-kusxton ,hsb31k 3jmakes an 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 fastso-31skbnk j3u xth1,?

  99.39: The driver of an automobile must carefully control eachqioyda-t:x c2 v: /pyo:e/ vpu0yt /p: of the following devices. Which of these devices can cause an at:0vp u xdp:cq-v /2 atoypiy /:oe:y/cceleration 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 15000 newton8r+ 7 (l9 hhaqmen( cy9-tfpmes is 24000 newtons. Aa79 r8+ (p9n(yemtl h e-fhqcmbout how 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 pej lajm61mp;8n7hft*lgap z)o/- o sl3rson 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. Givg 7p / ps6foza8l3hjl1 ntj*l-o)amm ;en 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 shocg+ unwo9b dfn+*0 z.cws three roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevatioz*n+gufwo9 +0.d bcn cn 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 length. As+t0p mmqm68vm; l8tx fr0on.gsume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly over the tracks.m 0mxo t lg8n6qpfv ;mtm+r80 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 the curved t)v.l9an 34mrawh;j;+hvirex . n r.d frack from point A to point C under the influence of gravity. What would be the directivr4iwhneh.a9vfx);j;r. nm . a3 drl+on of the cart's acceleration at point

  02.40: A box with a mass of 50 kg is dragged across the floqt7iu-us6cpy3jwi (lo 74t+sor 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 l43 u pcii(ys+su6qjtt-ow77 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 +jz *.ahx0yahrest 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 oyx+.jh0hz*a af 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 vm*x mpt7qj;7grass 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 t7;m*7vmjqp x among the various force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crate on a table. Neither is mou,vxk )q;hmb*ving. Which of the following statements concerning this situation is CObku),qx* h ;vmRRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleig q:iucp xr+;ms2hjz2 nkp*+w9 h 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 incrx2i hunjpc2 s9;zr+*pw k+q:m ease in speedup the hill?