99.36: What happens to the inertia of an.jfb: ,itj o9h object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not depx3zure-w p-re:k3e- 7nr ne9fend on the quantity of mattr3-ep ez-xe 7unwk- fn39r:r eer present. Which of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rj/hf4fo*t qykschb 5krq-*la( te -57ests on the surface of the Earth. Assume the Earth has mass(f-hfo- h7etqq*y* rk alj/4c t 5bs5k $5.98 \times 10^{24} \; kg$ 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. What is th,/4wuo.el n8ur;+myp - repxxe magnitude of the gravitational forcexpw4r /x-y, epr ouue.8 ;mn+l 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 zh+2 tbql5h8i ky7hxp 9js2 8r9ar0fdto increase while its acceleration decreasepy xb92a9 7lidfh0 25qrks jh+zt88rh s?

  00.11: A certain part(v;q da6: tgchicle undergoes erratic motion. At every point in its motion, the direction of the pghtqcv6 a( ;:darticle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string held o g9hn74z imz-qn6wp) by a person. The-o7gq6 zzm9np4inh)w 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 block?

  07.18: In which one of the following sinx* okrpq)(mg::wnyky *6 ol: tuations is the net force constantly zero onnm: 6xg: oo)q*kwp(yyrl: k*n the object?

  13.28: An object is in free fall close to the ground. A person interrr xr2dovt9,lxp2/a9t( f fw/venes and slows the object o r9ldwt29v/p/2(ff,r axxr tuniformly 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 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, F2 of 50 N, m4jw5.t jf,-xsvh bj5l37 mvwand F3 of 70 N, acting on it. T.3stvmj7w h-bjm5j ,xl 5w4 vfhe magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can be combine t12fb5w s gliz5gx.,bto form a resultant with a magngtg1wxi f5 5zsl.,bb 2itude of which of the following

  10.06: Which of the following statements is most c.vy+rn+-7ij4nz ow us losely associated with Newton’s Thiij4 rz n +7u.nywso-v+rd Law of Motion?

  95.06: The reaction force does not y mlez f xc0y(*btpk.7a9 e*4tcancel the action force because:

  14.14: A box rests on the k8at m-uqqk-g59j,xvfloor of an elevator. The elevator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair kkat-j,gu q8m9vq 5 -xforce to the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls a/nc1w s7wo5yj5;kf idownward through the air with constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force 1fws ao j/ wn;cik75y5to the air resistance acting on the skydiver during the fall?

  06.08: A baseball is 9/ln;tc6r)e vh xm2qm9yjei-thrown 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 the ba l)iev-m2rqechy;6 9 9/jx mtnt is always

  11.13: A physics book sits at rest on a table. On top of the book is a calculet +my8kma.m9huk/7dl f wrxp4 y/2(tator, also at rest. Which one of the followin /2tw8ym9. k+amkhp7eyx/4rt(d fu l mg 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 I class were in lab ryx 3,a+t8.sb5,9qirkuy h hk conducting an experiment related to Newton's Second Law. The collected data were displayed on the graph at the right. From this graph, what conclus,qkba r3y hsyu8. ih59x+t k,rions can the students make?

  99.03: If the net force on an object were doubled while at the same time th6pu7 k*64gr2pq y feyoe mass of the obje 7rkg*q6pe y6ofp2yu4ct was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly from rest to a sp,rxc(on npnf -b 0tfi;c5f3s,eed of 20 m/s in 10s. The magnitude of the net force accelerating b5cxf3,f0nf,(i n; o ntsc-prthe car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass of the tra u8(/pjcb,bx *d3k cliiler is 4 times the mass of the tractor. If the tractor accelerates fox(/,83bic pjkb* ucdlrward, the force that the trailer applies on the tractor is

  99.16: Which of the follo7am bw4h1b ft-wing principles best explains why large tractor-trailer trucks generally accelerate much 41bf-haw t bm7more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink t qw0em5y99qr:nv7cv phrows a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement describes the subseque9p0vey:m 97 wq 5nrqcvnt motion?

  00.13: An object near the surface of the earth with a wez g 6b,4ne r,gw:i ;dhb:do:rtight of 100 newtons is accelerated r g,beo hr;t:,4 gd:wiz6d:nbat $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mam;r 2ixbe-v/u ss is 1200 kg is accelerated from rest by a constant force of 2400 N. What is the speed of the car e/ irvm2-x;b u8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed )m-+k nhd7crf 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-rc +dhk m)n7f does the block slide before coming to rest?

  95.38: A block with initial velocity 4.0 m/s slides 8.0 m across x bvs; 2brg0 4bd4hl.qa rough horizontal floor before coming to rest. Theq4s2d bbhbv;.g40 lrx coefficient of friction is:

  09.21: A 20.0 kg box remains :+u11ahlxo-h.upk9d 8covxze v3ie7o2 8gluat rest on a horizontal surface while a person pushes di19.h+gxao u31dhovlk882e e -7pczv ulx :io urectly 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 accelera hf7o l g l+,c94lw: st-ws,8wwmsoum.tes uniformly to rest on a horizontal surfacew7+lflmsg :.wu ,4s89t wmol cwo,hs-. The block travels a distance of 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 i ef66pg./rjz xt+fm lv x3j;)bgok0,gce 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 roa;/gl f6oke3.bgtvfpr + m z0jxg,6)xjd 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 patcxvg 30wz2dkj x0zj)5scdh/f4je 1x +uh of ice at a speed v with its brakes locked. It thj x2s euw g4 dcxkz3jzhfj05d/+vx01)en 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 slayki ;/hc +t7t* d6hyhnbb d4k z7-:ykcmming on the car's brakes and skidding to a stop. How far would the car have skidded ik; hh46 cz7b:d*bc+ 7yhtyi kt-nyd /kf it had been traveling twice as fast?

  99.39: The driver ofqa7 sd*1g vcp,t yc8r0 an automobile must carefully control each of the following devicer87* c,1dpc0st yqva gs. Which of these devices 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 -d lvats;dc +3kf1m uut(-4k sq/alu)rocket with a weight of 15000 newtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 d/c )ldua+tm q;-avtlfuks4uk -(s31m/s to 36 m/s near the surface of the Earth at takeoff?

  07.21: A box slides to the right ach2vy/vze8-bdxskt:ajbo , 8 )ross 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 /hxo- ez: adstkj,8 b) vbvy28the 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 equal lengt3 im wwtj:;4qnh. Assume that on all tracks the roller coaster c j3i:wt;qnm 4warts 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 s.uqwd 33h (*l,vch ktwkgav*3dld/ ,ehows three roller coaster tracks of equal length. Assume thk. l,k h(l3,v waeudd*t3*g/wcv3 qdh at on all tracks 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 reach the finish first?

  02.29: Assume the rollercoaster cartrollsk6q2kpab)o x +od.f*qun u7)+llz5 xm frictionlessly along the curved track from point A to point C under the influence of gravity. What would be the direction of the *u7 qxqf+ubzpnol lx6+d 52 a.mk)ko )cart's acceleration at point

  02.40: A box with a mass of 50 kg is u 08 u 5jz:if3nnvobw11 5mxkfdragged across the floor by a rope which makes an angle of 300 with the horizontav38fmwkun ujo zfnx11 :5i50b l. 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 6a2* (tja9jf -vg :qpklirxw,rest is pushed against a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while :aj-xlk gt *,r9aq6viwp( f2jthe 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 ( bmf;e2jzdu c j+fs;8yi40ta 1-eiwa a lawn mower across a horizontal patch of grass with a constant spee- f0is e(uw mj;4da2i tf+eabz y1;c8jd 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 among the various force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crate on a)tv6yn +zizv:j9o- o r table. Neither is moving. Which of the following statez 6ov- trz+jy )in9v:oments concerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigiv 4ifaveh6raj*2c5 .j4h (ch h is pulled up a hill with an increar2 (* ihc4hajijvfevh65 ac. 4sing speed. The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?