99.36: What happens to the inertia of an object when its velocity is do(o1hqgaiqmzy4pg y cea:91(ipet *.( ubled?

  02.14: An intrinsic property of 6j:z63(. hdymyxl.t mx mgclyf ,- l9zmatter is one that does not depend on the quantity of matter present. Which of the following properties is NOT -x:mf.g3ldzyj(9 y mm x 6zht,.6lly can intrinsic property?

  04.16: A 20 kg boulder rests on the surfao4tw:0rc: lg uo u63ctce of the Earth. Assume the Earth has mass r:o cu:lugt30co4t6w $5.98 \times 10^{24} \; kg$ 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 +ehl+ (sp/w.budv.pethe surface of the Earth. What is the magnitude of the gravitational force acting on the earth by the sphere? The Ea .le( s+dh+ upbwp/.verth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an *77 q aa4t:vpkzxkft1object’s velocity to increase while its acceleration decz1 :atfkqt4v7axk *7preases?

  00.11: A certain parm2.8qb 9x ga5ea nk3jkticle undergoes erratic motion. At every point in its motion, the direction of the particle’s mome5.83njq9 akkg2b axmentum is ALWAYS

  17.14: A block is suspended inci0/kd:u(ks ;3zsdna the air at the end of a string held by a person. The person pulls on the string uniformly acceleratin d3k/ssua cn:kzi0(d;g 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 situations is the net force d 4+gnvh-s- j un()orbyc5s0p constantly zero ons54+nbcjd(- h ovu )sgr0y-np the object?

  13.28: An object is in free fall csxuh2yf+2 u9s qiri)(lose 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 magn f(shx)2 qi+s9ur2iuy itude 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 forj5lu: vj w7nl.(.xdirces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnit7uj.l5v ri:. ndxl(jw ude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force ofvxqff;5: lo;2alduz ( 10 newtons can be combine to form a resultant with a magnitude ov:;2u5 fl( olqaz; dfxf which of the following

  10.06: Which of the following statei+oc 1n(zl -dements is most closely associated with Newton’s Third Lawod1c +nel (-zi of Motion?

  95.06: The reaction force does not cancel thmj:t; sut 0p7we action force because:

  14.14: A box rests on the floor of an elevator. The elevator is acc6bp(b4g+q51b ma yi d :4ayyw5 y,esnaelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational force acting on the box by m( asb p1g5+5 en y4,y:wbby qda4ya6ithe Earth?

  15.15: A skydiver falls downward througbf k g8t94mov(h the air with constant speed. Which one of the following choices correctly describes8kgt mvf bo9(4 the Newton’s Third Law pair force to the air resistance acting on the skydiver during the fall?

  06.08: A baseball is thrown by a pitcher with a speed of 35 m/s. zhhj57fd5c mu),tiitdo n*+5 The batterswings and hits the ball. The magnitude of the force that t +n55 )df5h,zthutijmc*7oi dhe ball exerts on the bat is always

  11.13: A physics book sits at rest on a table. On top of the book is a calcu0;m3tug+ jhjn 9y0o mqlator, 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? j+t hm3o;ng mj 9qy00u

  05.06: The students in a Physics I class were in lab conducting an experiment re v 1ru:hwk(bs.je*s3 jlated to Newton's Second Law. The collected data were31v.kb*e(jj swr :shu 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 dn nq6ojgd-(1(nqonx:xls r/ *oubled while at the same time the mass of the object was halvesq/r:nd6o- g( onn(*qxx1n ljd,then the acceleration of the object is

  96.15: A car whose m;;j wohxc2 r)2mb6tzcrp-i9t q 4r-hbass is 1500 kg is accelerated uniformly from rest to a speed of 20 m/s in 10s. The magnituc h;4rijh9tmwt6c;z2rq2xbbop r) - -de of the net force accelerating the car is:

  99.05: A tractor-trailer trusbjhi* r:xcknt2ntekm0h1zv( 9;06 aac6 4 aeck is traveling down the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates fs(0nnaikvr 6mbk94ch*;et ct zhe 01aa2:x6jorward, the force that the trailer applies on the tractor is

  99.16: Which of the followinx l1yy.r :3tsag principles best explains why large tractor-trailer trucks generally accelerasx.t13 yy rl:ate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a 2 kilob1pal59x;r(x)9isy s y+ ioqogram ball, givin9o5b x(;ys 1xqyiprisa+) 9log the ball a velocity of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface of the earth with a weign og8g;x.n d:xht of 100 newtons is accnn. :x;gxdgo8elerated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is e*krty sd:jbe ;si81/accelerated from rest by a constant force of 2400 N. What is the speed of th;:ibeejky s d1ts8* /re car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial spewyrj-t5rn1 n ; ,bqq9ned 4.0 m/s slides across a rough horizontal floor before coming to rest. The frictional force actyr- qq5nw1tj,nrn9 ;b ing 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 slidefa:u(z 3io b e+4klw8es 8.0 m across a rough horizontal floor before coming to re (fz b8+k43ule:eaow ist. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal su+ot6y/vg 1( ttqxw wx6rface while a person pushes directly to the right on the box with a force of 60N. The coefficient of kinetic friction between thttvy+6x w/gw16oqt x( e 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 eb)io)ym svn.rf;6a3 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 represents the;6 inyae)bv )m3o.sf r 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 ,xr. e :3dqf ,cuvzhv1with 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 dryxhczf:u r1 v.qv,d,e3 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 ibc- )8yl -xmclvsa9 6nts brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of ki 96l-sbyxm-nc ac)8l vnetic 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 maac vx y,2p-:( (dmynsxkes an emergency stop by slamming on the car's brakes and skidding to a stop. How far would the cax(m y nv 2c,xs(p:ay-dr have skidded if it had been traveling twice as fast?

  99.39: The driver of an af e8 + o6bj1:k .sstjwsvmi:0mutomobile must carefully control each of the following devices. Which of these devices can cause a jb :okfsm mj0i 1w+vss6t8.:en 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 15000 newtons is 24000 bd+u- dufp)*1)i ujg/r4srdcu1 s8qp newtons. About how much tim1u ib d8psdc4*/u -dqgf1j u)u+psr)re 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 th 2o1ogo zc/5tie 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 left, which is half 2t/o5c gzo1ioas 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 coaster tracks of equn-8-bujz *wh/xm4nn0 8tkz 7tq:r jjq al length. Assume that on all tracks the roller coaster carts start from rest at the same elevation au0jb-7j4jqwm kr: q 8z* x8tnt/hznn-nd 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 tracksmlqj g 8jhy,s .ex 30tegn12 /sxy,1kk of equal length. Assume that on all tracks the roller cg,sx8 ej ym1sk10yl. 2,g ketqj3h x/noaster 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 f (wl5ef9ll;f jrictionlessly along the curved track from pointef9fl 5l;(jw l 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 floor by a ropy rpj w1a,x*6oe which makes an angle of 300 with the horizontal. Which of the following would b6 x1p*o, wjyare 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 agaigc5 tmm( -czk:nst a wall by a 100 N force as shown. mgc:t(mcz 5-k Thecoefficient 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 lawn mower across a horizontal patch of gr n f x8.wxlx0cl63k*lnass with a constant speed by applying a force P. The arrows in the diagram correctly indicate the directions but not necessarily the magnflln* k xwnc6x.8 0l3xitudes 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 table. Neither is moving.t158*r7kb uipu p3 asd nxoq7( Which of the following 5a*ob8xp 7dkt (qr3 un ip7su1statements concerning this situation is CORRECT?

  06.15: A crate of toys r2k9 a(tsayd+k5c8xa zdf-r/ru v. h3cemains at rest on a sleigh as the sleigh is pulled up a hill with an increas 8a.cr+t -k329zxd/s5akavf d uy r(ching speed. The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?