99.36: What happens to the ube/c7fr qy3* inertia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not depend on the qug-ias ;4ufo 8zantity of matter present. Whi-4 zg8i;asuf och of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on theaf,,iq l bl)+p surface of the Earth. Assume the Earth has mf+ bilp,al),qass $5.98 \times 10^{24} \; kg$ 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 ia law*-:(raww fc1 bk:s in free fall near the surface of the Earth. What is the ma aa:-:wka f(1cbl r*wwgnitude of the gravitational 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 ;uue7rtldfn/ y3td h),;hfd ( while its acceleration decreases?ynu) t/u(etfdhd f 7l;,;3h dr

  00.11: A certain particle undergoes erratic p /q;j mdv.k+l,0zvyee8 x59q)b 5dr.q vylyl motion. At every point in its motion, the direction of the particle’s mome,qlm y)yk5q0rq;y./b+8.xj pvd l edvl 5v9zentum is ALWAYS

  17.14: A block is suspended in the air at the end of aw zm/a ih.*rmsqzcz7b wp*o 5c(5u81r 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 p m(shq mc /wb*1aw8*c7iuorz r5zz 5.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 situat fcy 4zfm-;u0xions is the net force constantly zero on tf-z4 f cx;ym0uhe object?

  13.28: An object is in free fall close to the ground. A person intervenes a 1yyfklj6x. 8o9.bo;t konh7jnd slows the object uniformlofonb7;8 yok 9x ltj.yhj.6k1 y 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 autbnzsw -55 gq),oy+N, and F3+aty -5og b z,unsq)5w of 70 N, acting on it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and ab rn22e/ii +pe 5puj(3yray5q force of 10 newtons can be combine to form a resultant with a magniqb(3p5y r/ a2iniy25pjee +r utude of which of the following

  10.06: Which of the following statements is most closely associated k9pbk fn70 ax,h1fv dcffvm3u+k2e o 6*:fmu6with Newton’s Third Law of Motik3hk6afc d7fm92 mpv kn+:bo1f0u,fvxe uf6 *on?

  95.06: The reaction force does not cancel the action forcl ) o-j9wvtlq5zilo3i l69qc7e because:

  14.14: A box rests on the floor of an elevab2 fi,t rcmobn+b3b 4 khc7,(btor. The elevator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational forc2,c3bt4 cmh bn7b+b,kf(oibr e acting on the box by the Earth?

  15.15: A skydiver falls downward through the air with constant speed. Whicjdv8 q j.qywrs cu(,.m60hwz*h one of the following choices correctly descr 6cwv .*h s8q.u(d0mjywqz ,rjibes 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. The r s1n-ctnf+ ;6uqu p;kbatterswings and hits the ball. The magnitude of the force that t q6+rn 1ufc;-up t;nskhe ball exerts on the bat is always

  11.13: A physics booxruuk 1vi4r2w8 )c r7pk sits at rest on a table. On top of the book is a calculator, also at rest. Which one of the following choices ir 1ku 72v 4r)xuipw8crs 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 clgvncae; *jbxt7wit6m* *gdh/t)s2 n 6ass were in lab conducting an experiment related n*2s6jhwtdmc ;*enb*g7 ti/ag 6)x tvto 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 objec:b jyx*zpru ot.im66.t were doubled while at the same time the mass of the obj6u .riz bpty*6jx:mo .ect was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniform -/mgh 1t6tyjuly from rest to a speed of 20 m/s in 10s. The magnitude of yj6t th-u1/gm the net force accelerating the car is:

  99.05: A tractor-trailer :xon0vg+esanl:a hs-,/*ovm k 1fb4p truck is traveling down the road. The mass of the trailnkpslfsv-/+ mae bvhnx g :a*oo0 ,1:4er is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explains why large tractor-trail blgmi,2c:8b ver trucks generally accelerate ,m c2:i8vbbglmuch more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throe iucw 0:nvab ,b;5a-rws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statemen vi0;abub, w5re:n -cat describes the subsequent motion?

  00.13: An object nea:hw 5 ccxj,i7hr the surface of the earth with a weight of 100 newtons is acceleratedjc:7cwhi5x, h at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is4lxctr.a bh- heqypd.y: 97b , accelerated from rest by a constant force of 2400 N. What is the speed of the caba .ch7. -tlpyq rb e9xh4:yd,r 8.0 s after beginning?

  98.32: A 3.0-kg block with v acle,+7 cdgql:5*qce 1ue/qinitial speed 4.0 m/s slides across a rough horizontal floor before coming to rest. The frictional force acting on the b lgqcecec1+l,7 eq/v:*5 qda ulock 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 slidx-ox qkv e4qwavw478 /es 8.0 m across a rough horizontal floor before coming to rest. The coef7ke4qa v8ww4x/o- xqvficient of friction is:

  09.21: A 20.0 kg box remains at rest 6r/wvopi y 6ik5d:-ncoc 9s: aon a horizontal surface while a person pushes directly to the rioc/w k96i 6a5y- :roc:inpdsvght 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,zx( x3n:faqp a horizontal surface. The block travels a distance of 12.0 m during the slide. Which one of the following choices best represents the coefficient of kinetic frictx pxz:n(,af3q ion between the surface and the block?

  00.21: A car of mass m slides across a patch ozovl4e2qqb e5+ pq2 2of 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 t 5q2 4ee2+2ozqp vlobqhe 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 h)0nbsse w7 )(b(ih9i pxnphxw:+ :aspatch 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 th h:(enbp)x9asx7w+ b0hh)p i s:is( wne 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 s p bqqsh0xl68 no;ez(eun bndjo, )5,1top by slamming on the car's brakes and skidding to a )ln o0x,eh6do, 85bnjeu;bnqqps1 z(stop. How far would the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an automs8hc ph ci7b)(obile must carefully control each of the following devices. Which of these devices can cause an acceleration in a moving car?c p)b sh8cih7(
(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 2400u9c* . ,uh ch,jilz +aq6:ugix0 newtons. About how much time is needed to increase the rocket ’ speed fgqj+,c9hihx 6z i:al*u.cuu,rom 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 pew/ p0sm k vb99m9 ,-eyykdibm5rson 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 the box accelerates to the right, rank the sizes of these three forces exe-,em 9wm9my p/ik095y vbbsdkrted on the box.

  02.27: The diagram below shows three roller coaster tracks of equal length. Assmb4** qs/p xnhume that on all tracks the roller coaster carts start from rep * h4m/xsnb*qst 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 track+rp1dk l5mo3:r watmgu- ( p4gs of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevamw gt 3mpr+ 5rpk(-41:ouldga tion 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 e0ipk dw6a3b;n(b 8)v e8u gctfrictionlessly along the curved track from point A to point C under the influence of gravity. What would be the direction of the ca8(gpic u0bewt8kd a)b3e ;v n6rt's acceleration at point

  02.40: A box with a mass of5;,jz w7g,thmhho t/ f 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 constant7 t;ho/,z5hhj t,fmw g speed of 20 m/s as shown in the diagram?

  04.40: A 6.0 kg block initially at rest is pushed agains2 isro+iw u6a2ln-4sxt a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of static frictii s- l+rs422onaxw6uion 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 horizontaln ,2vtgcnfj pmii5 65s*x/y1 h patch of grass 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 among the various force magf/n* jsg6cx2my,vti5nhp 51 initudes, W, f, N, P is CORRECT?

  06.14: A book leans aga s ):cjaxn1g+cinst a crate on a table. Neither is moving. Which of the following stateme x:1a+snc c)jgnts concerning this situation is CORRECT?

  06.15: A crate of toys rema jdpx2kr z8q((ins 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 responsible for the crate((j2pk r8dqzx’s increase in speedup the hill?