99.36: What happens to the ilg+ 5hzh7h 4/so bzsr)nertia of an object when its velocity is doubled?

  02.14: An intrinsic property o2q gp y(5.bqnif matter is one that does not depend on the quantity qi 25bn(.yqgp of matter present. Which of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of t8 it 6mu9im0+)m dgmtthe Earth. Assume the Earth has massii8 9gmt+um0t tdm )m6 $5.98 \times 10^{24} \; kg$ 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 s;mdupvu -h 97 ta+bw9Earth. What is the magnitu u+ausbpwvt 7d; -9h9mde 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 while i:pa8j5lad:,. hjw 6kun ssm0yts acceleration decreases?m8: u60jj5h :anw,ykdsals.p

  00.11: A certain particle undergoes erratic motion. At every point xh* i y; qba;-r8mpj,c(whjc2 in its motion, the direction of the ij28c q,mb -w;rph;jhxy (a*c particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string held by a pers0 6.j.b* xiwtsz 6rhqqycial15c1m;yon. The person p6 b* lcq;5m cyi1s.6rt.x0yziq a1hjwulls 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 situations is the net forcrv r(shy0.nf ,e constantly zero on the ob (hfv0y,rrs .nject?

  13.28: An object is in free fall close to the ground. A person intervr r+h.fr/t.5(v,hy)z9pt lh r6ckm m qenes 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 thehpyh9 ., z(kfr.q6lrv+ rm)/5 ttmhrc 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 d qe1t7er*z9d of 30 N, F2 of 50 N, and F3 of 70 N, acting on 9z17drde*t q eit. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can bslohs(j9 1/wh)egz5dpo 2u -8bexx 0cf(d lf( e combine to form a resultant with a magnitude o e(x 1c dg8- ed)o92sp 0hzbxhs5fjwllf/(u (of which of the following

  10.06: Which of the following statements is most closely associated with Newto 53. -wz-n wlecoe+qqcn’s Third Law ofe+-lqwzc 5w qc-.e3 on Motion?

  95.06: The reaction force dbxxt a 5r45rrm+f 4zf*oes not cancel the action force because:

  14.14: A box rests on the floor of an elev+kl 9adjq )b/x 6tt*7 ;czyhegator. The elevator is accelerating upward. Which one of the following choices 7a q 6h;)/ j*cyxklbg9ez+tdtbest 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 with constan4l-izu0at/x fl6v .mx t:o3t ot speed. Which one of the following choices correctly describes the Newt6-/v4x zox3 tfltl m.a0o:tiuon’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*t jwe +fh;x1d of 35 m/s. The batterswings and hits the ball. The magnitude of the force that the bal;hf 1*jwxe+ dtl exerts on the bat is always

  11.13: A physics book sits at :yx.0dy7p8u + uom .-cx67yccw nstumrest on a table. On top of the book is a calculator, also at rest. Whichn7x .tyu-d :x .c7 p8uwsmcmuycy6+o0 one of the following 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 j*i)t aza:wkb8jn,s ua8 :h.+j k7sdk in lab conducting an experiment related to Newton's Second Law. The collected data were displayed on the graph at the right. From this graph, what cb):a:u w ad+zskj.nk8*8a thij,s7k j onclusions can the students make?

  99.03: If the net force on an object were82uy yl lsp7 dky/af)) doubled while at the same time the mass of the object was halved,then the accele8ys)a p7 y ul/lkd2)fyration of the object is

  96.15: A car whose mass is 1500 kg is accelerated ung (c 5s*zp5phriformly from rest to a speed of 20 m/s in 10s. The magnitude of the net force accelerating the carhg * cp5s(p5zr is:

  99.05: A tractor-trailer truck is traveling down the road. The mass e 8 (flpv5ycg.j56p 3rz. movbof the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the trailer applies on rvme. .po5vy 3jgczlf65p8(b the tractor is

  99.16: Which of the following principles best explains why large tractor-tramw fe;8 oq t;yho/.-o(g/lsx hiler trucks generally accelerate much moy; hf wohl8; m/o/qtgo(.x-esre slowly that automobiles?

  99.19: A 50 kilogram skater at rest on iznj y l*qv b/60mu7 n0niq5b:a frictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement describes the subsequent motion 6 ybn5u zbinm0 jq*n0vl7:/iq?

  00.13: An object near the surface of the earth with a weight of 1d681tuqsj)l+sxjoz,uk -ac - esyq (100 newtons is accelerated at-tu)dy86q1,o cj+ essk-uax(qz 1ljs $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated from rest by a constant fvv-.p h qurv16ikd, ;sorce of 2400 N. What is the speepv-v.;i q6uhk1d rv s,d of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/ x oai,ynds)pzzx(4y7e 2 kzhy:fd3 ,fpy4/)ps slides across a rough horizontal floor before coming to rest. The frictional force actingae7nx)ddzp y 2p4f( syz ihpf,o/ yyk,:)zx43 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 qdc3z; dr77x-khx8-d mjgzun8/ ny.sm/s slides 8.0 m across a rough horizontal floor before coming to rest. The coefficient of friction cd 8; n7ujd-gq8x-z7 hmny3kzsd xr/.is:

  09.21: A 20.0 kg box remains at rest on a h nih q7/)f5nq ;l.ueuiva-8+l ds cf0torizontal surface while a person pushes directly to the right on the box with a force of 60N. The coefficient of kinetic friction betwenhid0fsin;fl+)ecta u5v/-qq ul.78 en 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 uniyb7f1p 9.k/ uaagns gc 9 .ls7ge+bu)bformly to rest on a horizontbpg1aub/syg fn gs 9)+a b7k.7ucle 9.al 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 friction between the surface and the block?

  00.21: A car of mass m slides across a patch ofoz9 ,z+0uiphl ice at a speed v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. lpz90i uh+oz, The coefficient of kinetic friction 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 v with its ,drkqmg lqr94f 4knp7 nz4))fbrakes locked. It then hits dry pavemenk9l k44)4n,r zdqpqf f7nm)grt 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 slamming on the car's brake7ea5,e p8yyt gs and skidding to a stop. How far would the car have skidded if it had 7yya,etg5 ep8been traveling twice as fast?

  99.39: The driver of an automobile must carefully control each of the following :pjrf3dm/7o i9z wy8gdevices. Which of these devices can cauim/rwp d73 goyf9z: 8jse 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 rocket with a weight of 15000 newtonvbswls y42; c(s is 24000 newtons. About how much time is needed to increa;wlc4 v( bys2sse 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 horiz qq hx3p+,x-llontal floor. A person called Ted exerts a force T to the right on the box. A person called Mario exertq-+pll h,x x3qs 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 exerted on the box.

  02.27: The diagram below shows three roller coaster tracks of equal length. xpuqxy01v , ++11og v)9z p0jtaprqjw Assume that on all tracks the roller coaster carts start from rest at the same elevation axr1ap,+qvpj g001y v+pwo1zu t9xq )jnd 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 9va za1*v c1zo2tz wa;of equal length. Assu1c9 1z a;tv w*zzaov2ame that 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 cartrolls frictionlesslhu/ 9f-c6hhayde e5mgq/ 2fc1u .5xssy along the curved track from point A to point C under the influence of gravity. What would be the direcahfq56ccs1seux gfum y9d .-// e h5h2tion of the cart's acceleration at point

  02.40: A box with a mass of 50 kg is dragged across the floor by a rope qf55zlre)n v;dsb4ji0;lb .)+zrwsp 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 constant speed ofpsrb z4lq) z.v0j ;5dwbef5 nl +si;r) 20 m/s as shown in the diagram?

  04.40: A 6.0 kg block initially at rest is pushe5l sy e9n atzi5aw579vcm+ ,rrd against a wall by a 100 N force as shown. Thecoeffac+y 5e9r, nm5ta5vwisl z9r7icient 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 5mqn7uep;vebg0l u4 (d+ w8ja mower across a horizontal patch of grass with a constant speed by applying a force P. The arrows in the diagram correctly indic+e (7dm; g 84upbwa qljuvne50ate 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 cr-*uckqzu xe.p ,h)s q-ate on a table. Neither is moving. Which of the following statements concerning this situation is CORRECq ).-p-eq ,sckuxzuh*T?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is pudhwfrin/m(nz*kj/m * 9z9h 3alled up a hill with an increasing speed. The crate is not fastened down to the sleigh. What force is responsiblekn fj /*hzhd9nmraz*i9/w( 3m for the crate’s increase in speedup the hill?