99.36: What happens to the inertia of an object whr(*ta5 mb5 yb5wtjib- vdm,7ken its velocity is doubled?

  02.14: An intrinsic property of m4 siu 5:7dpwhratter is one that does not depend on the quantity of matter present. Which of the following properties is NOT an intrrhs u4pdi75:winsic property?

  04.16: A 20 kg boulder 6z :x9kuayc, mrests on the surface of the Earth. Assume the Earth has mascm9xy ,ua:6z ks $5.98 \times 10^{24} \; kg$ 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 2.pmbu*.8fm*y bt vwmthe surface of the Earth. What is the magnitude of the gravitational force acting on the earth by the sphere? The Ear2 *. uvmb*wybm.tp8 fmth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an orc n5a7d5k0g tbject’s velocity to increase while its acceleration 7ra5t 0gnk 5dcdecreases?

  00.11: A certain particle undergoes erratic motion. At every point in i-f+vznfn3: wl 0 itfr.ts motionv3fn.nlf+t :f w-irz0 , the direction of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a strinnr7 .iws./psz+vx+7xf nxg6og held by a person. /igvwz7 7s.6xx+n rpn.fsx+oThe 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 situationsezu-kght+ l05 0gbc 2k is the net force constantly zero on t5c u+zl0 kb0-ghk2 teghe object?

  13.28: An object is in free fall close to the groundxax .:y,b bzzyzd+:5kl raw3d (gmy47. A person intervenes and slows the object uniformly to rest. Which one of the following statements must be true about the m bdzbwlgd4x m.35zxzyaa(7 yky,r+: : agnitude 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 ha oob7u: /*9 qmvbckx2rz2nlz+s three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitude of the o7 9zk *nzmbv+ru2l2c :q/oxb resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a f kz*eiuq65fggm-f)9 morce of 10 newtons can be combine to form a resuf*q5f m9 z6ggk-mei )ultant with a magnitude of which of the following

  10.06: Which of the following statements is most closely associated ;-ssjdftn-dy:x k96rwith Newton’s Third Law of Moti6 9j tr;ks:ds-xn-y dfon?

  95.06: The reaction force does lg 4*wtxi,: jjnot cancel the action force because:

  14.14: A box rests on the floor of an elevator. The elevator is accelerz zw.gak2 cte.:p (q:xating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational force acting oz.ka zwepqx:t2 :cg.(n the box by the Earth?

  15.15: A skydiver falls downward through the air with condhik- no 4a+.5e7 onlnstant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance acting on the skydiver during the l 7nonoeha+54d- ki.n fall?

  06.08: A baseball is thkuucs-j 6n(. 0*kvypi5r v7hxrown 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 bat i5ujsr u n*07pk(ixk6vcv-h. ys always

  11.13: A physics book sits at rest on a table. On top of the book is a caw0n0(j rtfya-iq +0 eglculator,(+0nt yf-qijwg 00rea 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?

  05.06: The students in a Physics I class were in lab conducting an exp28jorl(+pwp wc9p7 pe eriment related to Newton's o+p (cj ww87e9r2pplp 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 object were doubled while at the same z190v e;k1a3hwm z,pzfo9 rzstime the mass of the object was halved,then the accel9kme9z; 1,fo s0vzrha 13zwzp eration of the object is

  96.15: A car whose mass ry4lpn;zh1dhhrg nm 04o*: bv*ei 9.iis 1500 kg is accelerated uniformly from rest to a speed of ;lhomie.** zrh9gv 4hy0 d: n4pi1bnr 20 m/s in 10s. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down thi-dzm9he s z x32+vsjg**v4tte road. The mass of the trailer is 4 times the mass of the tractor. If ihd-jg4sv2te zxt* v3+sm9*z the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles bestzqu;oar 5jzg2 w r7;g 8u:rj+p explains why large tractor-trailer trucks generally accelerate much mo5gurjzjgr;; 8our7z : w+p2q are slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a b82c6uydc7n.o * tgvc2 kilogram ball, giving the v6gy8.*2 cdccnt7o ub ball a velocity of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near thee(owva*ga(s0x* b,u;c ,j uo u surface of the earth with a weight of 100 newtons is accebx ,u0;w o *(u aoc*suae(jv,glerated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated from rest by a constann*mg*z-x:0 q2qb rlo ut force of 2400 N. What is the m: q*r2-lzqg0 obn*u xspeed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/qj s:66w*cp/uh*osm ds slides across a rough horizontal floor before coming to rest. The frictional force acting on the block is 3.0 N. How far does the block slide before coming to rescsw*h*/pqds66: mu ojt?

  95.38: A block with initial velocity 4.05d.db lxxsbwx3*bz sti :43 (c m/s slides 8.0 m across a rough horizontal fl*idx3:cb .bx(b4ssxw 35dz l toor before coming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a person pbr 00tiw9aopakqn w5:d o6w(;ushestabk5r(qa ;iodo60 wnww:p09 directly 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 accelerates uniformly t/suqr.fq *mu j./hkt q*5vv1 so 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*5qqu1 q h.* sj.tms/vfvukr/ of kinetic friction between the surface and the block?

  00.21: A car of mass mp b6 )tpq2+kfx slides across a patch 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 b6p x+k2 tpfqb)etween 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 r : dip92cav +sbz-bu0ice at a speed v with its brakes locked. It then hits dry pavement and skids t iu br9dsa2b-+cp v0z:o 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 s(/ zthb+w zlf6top by slamming on the car's brakes and skidding to a stop. How far would the car have skidded +wlzt6b/h ( zfif it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully control each of the followd*dj5*c mhsax 35 ,zscing devices. Which of these devices can cause shcdc*jdaz x5m* 5, 3san 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 witz8pad:0zq 6:w5l r w o9 qxem;o2bpgv-h a weight of 15000 newtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 2w0m8or5qd ze :;v6bzo gp-9q la:w px36 m/s near the surface of the Earth at takeoff?

  07.21: A box slides twlhcf,1)i 8g x vindt-dd69iehf z331o the right across a horizontal floor. A person called Ted exerts a force T to the right on the box. A person called Maridin93t361ii,-h)h1 g f el 8fdc wvzxdo 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 coasqsn)8j9 tjwq1ter tracks of equal length. Assume that on all tracks the roller coaster carts start from rest9 )qjq1njstw 8 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 tracks of equal leiu lkbhv .-sxzign,5/4(vc.kngth. Assume that on all tracks theb uh iv-5 zs(v .kngxilc,k4./ 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 rollerconi ,qg1 )or42 yc/-rt y;dchk)ulik2kaster cartrolls frictionlessly along the curved track from point A to pk;)n-4dr tciu 2)/g yryl,kk2c ho iq1oint 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 awa3y/ 36u z ev9o8hbgw(rbh- (+wka2fd9fz e qcross 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 az (8wf/ qe9ohha bfz6 -ywwk 23gure9(ad3+vb 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 ;im3/:0.sgj ce)pt s7tkytjrdjg,t (pushed against a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 whiletm.tg,0 jk:/jts3sy ;(t j7edi)gr cp 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 horiq .:w .4;l 9bxcx dwqt9eam)jzzontal 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 thelx)ajb 9qe4xqt9.mzww.;c d: 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. Whidnhy 9ijcaty 8*h.9m, ch of the following statements concerning this situation is h,hy9.my8*idjc9na t CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is pulled up cl vin r/*y;29ogak4wa hill with an increasing speek 2inl4ag9c;y*w/vr od. The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?