99.36: What happens to the+ui uo d4+vse4 inertia of an object when its velocity is doubled?

  02.14: An intrinsic pisq.yc6vub1 h4twk3+kiz0 :property of matter is one that does not depend on the quantity of matter present. Which of the following properties is NOT0zki+t.v4u3 wi c b1 qskyh6p: an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of thu4x0gh zm-u/bc-6 zw yfi.;vz e Earth. Assume the Earth has mzm/4 wx.hy ;u-fz-vbz0c i6gu ass $5.98 \times 10^{24} \; kg$ 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 sphece )zwi4fb6v (rvo4. cre is in free fall near the surface of the Earth. What is the magnitude of the gravitational force acting on )ci(.evvw4r fzcbo 64the earth by the sphere? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an onhr/g 3 +9n1 y40woqvovuxo9kbject’s velocity to increase while its acceleration devy4nk o01r3h 9von wu9 x+oqg/creases?

  00.11: A certain particle undergoes erratic motion. At every point in it3lfqlrq + .)lms motion, the direction of the particle’s momentum is lm.+rl3l qq )fALWAYS

  17.14: A block is suspended in the air at the end of a string h6 iol,e)erjdm )s+iq-vp9j,beld by a person. The person pulls on the string uniformly accelerating the bd js vm +b-,eq6i 9)r,olj)ieplock 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 thddxrm.: a gic(dr0u8 -e following situations is the net force constantly zero o8.( d0m-gr uidxdc: ran the object?

  13.28: An object is in free fall close;l drue -g :ozf-uk24g 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 magnitude of the objec ;:-of-zdr2ek uglu4g t’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, and F3n;.jh3urt(nn g u9i7glmshn /s v1r3 2 of 70 h(n13 t3gjn2ni gmh/;u7v sru nsl9r.N, acting on it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Nrbs1ri3 r wf4+l7z lod,t;9egceh0.uewtons and a force of 10 newtons can be combine to form a resultant with a magnitude of which of tutes lgrbz 47i19+0w3e.l,hd ;rofc rhe following

  10.06: Which of the following statements is5x z5u.g)tmtf yspry 9ir u,.; most closely associated with Newton’s Third Laymx),prs5t gt;rf u5u i.9.yzw of Motion?

  95.06: The reaction force does not cancel the action uw jalz.e8k-o3y gi99force because:

  14.14: A box rests on the floor of an elevator. The elevator is accele;)du1yxxju5x t5ao:mq5p rj v+ ia2d-rating upward. Which one of the following choices bestj5xmau)uvxrp yidt5d:+5 o1; 2 qax-j 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 m+ekch3qc4+ik 8g1chmt0* wrair with constant speed. Which onek1gmce3q+t 4 kc*+h0c m8iwrh of the following choices correctly describes 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 spee729x55pkoebydz qsz 3d of 35 m/s. The batterswings and hits the ball. The magnitude of thp2d5 zb sxke y735oz9qe force that the ball exerts on the bat is always

  11.13: A physics book sits at rest on a table. On 3:apw1 66rm:35vlt piyonxh1 9adks itop of the book is a calculator, also at rest. Which one of the following choices is the Newton’s Third Law pair force to the force tx139: 6 wnits3o6 k5ldi rpahvya1:mp hat the table exerts on the book?

  05.06: The students in a Physics I class were in lab cqv77 t+qxupe,onducting an experiment related to Newton's Second Law. The collected data were displayed on the graph at the right. From this graph, what conxp,qv tqu7e+ 7clusions can the students make?

  99.03: If the net force on an object we9thswi;voghpb;,92a/avn7 s re doubled while at the same time the mass ofbh v,/p gwo hinvssa ;27;t99a the object was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg ija,uisr6nr: : ptsc6 5s accelerated uniformly from rest to a speed of 20ur: ,65p: s antisr6jc m/s in 10s. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer trusqlkqm) jm, 1o:.nax (6 pczi,ck is traveling down the road. The mass of the trailer is j6xs.:o(a n)zi mp,c qqk1, ml4 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 bestzw,6-abe - ybt explains why large tractor-trailer trucks generally yz6-abe, t-wb accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rexv +j dl;;p9*c0-5eadsep zht st on a frictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement describescel5x;z - p09at+sdjvpdh ;*e the subsequent motion?

  00.13: An object near the surface of the earth with a weight of 10 v:9k86:ynhxlcv/ ab* v (vwty0 newtons is accele 9 : 6cvkw/8vaybhtvx :nv(y*lrated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is a dtg1t/bu)ghe3- d/mq-z5szgccelerated from rest by a constant force of 2400 N. What5)1/q-zudm/- hgtdzgtb e 3sg is the speed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides acrossq.(crj0 hp ux;g d,w6z9vsej 7 a rough horizontal fwce09d7 hzj.vu6 j;gp,(qx s rloor before coming to rest. The frictional force acting 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/2pr; dj sr,7r8(zebuas slides 8.0 m across a rough horizontal floor before coming to rest. The coefficientr8pb(d2,7r a;zer suj of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface whi ouk cc7mt h; c19hc4*-,wlfiyle a person pushes directly to the right on the box with a force of 60N. The coefficient of kinetic friction bettcc74y , -o u*9h m;ficckw1hlween 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 uniform1 v 6ru;etqeb-sk22nzly 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 coefficient of kinetic friction bs 2 1bernuevz2qt6;-ketween the surface and the block?

  00.21: A car of mass m slides across a patch of ice at a speed v with its8nwlui r( k+p7 brakes locked. It then hits dry pavement and skids to a stop in a din 8pk+7wlu (ristanced. 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 sp +qhpgdo2/iok:j3 lu 7eed 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 road is g+u o 3h:o7kpdi qjl2/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 sb gt6/ )9*fsts;fz iaetop by slamming on the car's brakes and skidding to a sa6t tzbsg9*f)sie ;f /top. How far would the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an au h3 zk8tea53lytomobile must carefully control each of the following devices. Which of tke hlyz5a3t38hese 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 rocket 3k vsxj i))ix2qi1 i;rwith a weight of 15000 newtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36 m/s near the surface of the Eart )ivi)k2qix1 is x;jr3h at takeoff?

  07.21: A box slides to the righk6ijox(c 8toz*;g5py t across a horizontal floor. A person called Ted exerts a forj o56(k*zop8i ;cxgty ce 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 exerted on the box.

  02.27: The diagram below shows three roller coaster tracks of eq kjga3l 1 uycn1j0mctu6 +;1quual length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly over the tracks to th j 3u+m6u1cat0jk1n yu glqc;1e 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 9v2o939bju hx dwyty4 3gg+gdshows three roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start frxowb2 v9tg d9yd93y ug4j3g+h om 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 frictionless(f;wrn-)( znk4 gcvujf+v y 8-4rsg uwly along the curved track from point A to point C under the influence of gravu 8 vj;n-zk v 44g(n-rsf+gu(rwywc) fity. What would be the direction of the cart's acceleration at point

  02.40: A box with a mass of 50 kg is hybk tbp6(,n tnvka6me t:,:7 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 requi:6( tbeyb kvp ntnk7h:m, ,t6ared 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 against a wale ruc(obn4unc3v8z9p 1e j9 ;zl by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the ze 9p9vc8j4 u3re1co ;zubnn(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 horizonta2s hi7r)ofpeid5sh4 f5 9 jsd+l patch of grass with a constant speed by applying a force P. The arrows in the diagram correctly indicate the directi5 hj4ssfp7ei2 f s9)oirh+5 ddons 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 tabcehhldl .8) qx.vb 6j(ljj4l 1le. Neither is moving. Which of the following st4 6jd(h h)1ev8.c.llbql jlj xatements concerning this situation is CORRECT?

  06.15: A crate of toys remai0 r y+ kvwrq1tzogl6i)tu8+wi 7*f0eons at rest on a sleigh as the sleigh is pulled up a hill with an increasing speed. f068*kor)0gqi7o z l1 ty v w+utewir+The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?