99.36: What happens to the inertcl0 /88or omo lqdge- f-0cv1jia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one t co9bk w2dr .cczt6ait/i4 0d+hat does not depend on the quantity of matter present. Which of the following properties is NOT an intrinsic owrk.c6 i4td20/a+z9 cbd it cproperty?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume thr+ t0odvn; +gbe Earth has mass bo;+d gnr0 vt+$5.98 \times 10^{24} \; kg$ 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 surfa, l5(5 rjs ei5wtb4yk(s:gflu )ne-dgce of the Earth. What is the magnitude of the gravitational force acting on the earth by the sphere? The5,iywlf4) t:nk bsge gj5srd(( 5l-ue Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to increase while its acceli ao bhw.(v/o* 8o,pgzeration depoozh oi(v,/.*8 a bwgcreases?

  00.11: A certain par5dxbw6v 9ig(a ticle undergoes erratic motion. At every point in its motion, the direction of the particle’s mo6a 9xwdi(b g5vmentum is ALWAYS

  17.14: A block is suspended in the t51: si5,r) d ddfraudair at the end of a 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 correctly )dd55rst1dru:a, df i identifies the Newton’s Third Law pair force to the force of the string on the block?

  07.18: In which one of the followingppoy(vf1ky*n ;0wg dtq(u6 k, situations is the net force constantly zero on the objgd;o,ykpfk(qv* tynp1u( w0 6 ect?

  13.28: An object is in free fall close to the ground. A /f m-vyz qh;g6zjz3s9 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 thyfj3 ;9hs/z6qg zm- zve 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 oab1wut; z,m /nf 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitude of the resumnb ,1wa;tuz/ ltant ofF1 and F2 is

  01.07: A force of 6 Newtons and a f y4qaiq 4xg5uiz7b 9cit,,c-sorce of 10 newtons can be combine to form a resultant wit,gq4 iqatiy iz5, bccx-4s u97h a magnitude of which of the following

  10.06: Which of the follo34ji jcr5keii3su1;k . k)wikwing statements is most closely associated with Newton’s Third Law iec 3 wik1sik j5u;kr)34jk .iof Motion?

  95.06: The reaction force does not cancel the a klgcjujwwaz5 v l s-*fsdays2,:8- 3*ction force because:

  14.14: A box rests on the floor of an elevator. The elevator is acceleratucaxn o18e./g ing upward. Which one of tc1x 8.en /agouhe following choices best represents the Newton’s Third Law pair force to the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls dowyyfy utq;( 0mzw5 eshfvp49 46nward through the air with constant speed. Which one 6;z( s4 h0 mv9y5fqw4yufp yetof 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 pitchew5fc)w 7:siu py1zp n8r with a speed of 35 m/s. The batterswings and upy)i sp wz1nw7f5c: 8hits the ball. The magnitude of the force that the ball exerts on the bat is always

  11.13: A physics book sits atyl8ha,,i 5oi w rest on a table. On top of the book is a calculator, also at r8liy, 5 hwi,oaest. 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 ;nb a/yk-ofdeqznxq zj08/3 /in lab conducting an experiment related to Newton's Second Law. The collected data were displ b /d nfykqaxzq/ezo-n3j/ ;80ayed 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 whc* aaae6 bmd8 x,m-gl(ile at the same time the mass of the object was halved,then the accel bxm8dma 6( acae,-l*geration of the object is

  96.15: A car whose mass is 1500f2 gbq;7xljjxw5uvk c -q2rphdg-d- 4 (:0w ub kg is accelerated uniformly from rest to a speed of 20 m/s iwgh5b xfu-j-7bk2(lvd0pwq:juqgx r; d -c 24n 10s. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. jd.kny.vembv7x,o- / The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the trailer appldj enko/,v-bvmx7y ..ies on the tractor is

  99.16: Which of the following principles best exvki, p 2v*y4;w;*o *z iupl)1xuvdhn gplains why large tractor-trailer trucks generally accelerate much more slowly tun v*; o*2ii14vkvxy* hd wpgl );,puzhat automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a 2yy5re y hs t-x3qo1m,206ueoq kilogram ball, giving the ball a velocity of 10.0 m/s. Which statemen,ohtqxyy5r1 ume2sqo-3 ey06t describes the subsequent motion?

  00.13: An object near the surface of the earth with a w3 v-9an5;;qhbchy sl8 5) ;vbax;qe nwvjdr) height of 100 newtons is accv9nxl;;;)aarenvcs q5wd h3)vhj;5bb -yh8qelerated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg6t(fsh g2:i u/ws.gtw is accelerated from rest by a constant force of 2400 N. What is the speed of tw6ti (g g/twf:suh. 2she car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a rough hq)92quiaw rx4v04 k5w)fr ziporizontal floor before coming to rest. The frictional force acting r q29p40))a4w u vw5rikqfzixon the block is 3.0 N. How far does the block slide before coming to rest?

  95.38: A block with initial velocia4 7;+ nvkcjhfty 4.0 m/s slides 8.0 m across a rough horizontal floor before coming to rest. The coefficiv7+k a;jh4fn cent of friction is:

  09.21: A 20.0 kg box remains at rest on a wtifv5l9e3s*w br i0-horizontal surface while a person pushes directly to the right on the box with a force of 60N. The coefficient of kinetw -t3 i*0vwlr9i 5bsefic 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 udb( k i*s q;g6jl/6pkmniformly to rest on a horizontal surface. The block travels a distance ofidk6 bjkgq(s6 /p*m ;l 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 ice at a speji+jsr 9lg0e46 /umsdioa;k0 ed 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 isi4m o/+d09 lag k6e ;j0rusjand 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 pu s 21n(xoo;mslides 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 ki np; 2s(uoxmo1netic 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 e7 1c: brngw7jt)*k vpcar's brakes and skidding to a stop. How far would the car have skidded if it had beptn)1*v jwrb7: g7 ceken traveling twice as fast?

  99.39: The driver of an automobile must carefstc8s,qitu:lr+ +him 5u(x 7 uizzy-1ully control each of the following devices. Which of these devices can cause an acceleratt-,u5+8xu 71 i+l(stuszir :ihq zmycion in a moving car?
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net force on a r3 jq4m3-pvq qcocket with a weight of 15000 newtons is 24000 newtons. About how much time is needed to increase the rocket ’ speedvj4qm3 -qcq3p 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 horizontal fxg)/rnxe, f)a loor. A person called Ted exerts a force T to the right on the bo) /efxgna),r xx. 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 x,j7wc54 jpnz roller coaster tracks of equal length. Assume that on all traj 5pj cz4,xn7wcks 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 be traveling the fastest at the finish?

  02.28: The diagram below shows three roller coaster tracks of equ y2m+98jjh fltxl7*jmal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly over the y f2 lh7mjmtx*+jj 98ltracks 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 frictionlessly along the cuvy18ro vv j-rsry vzh.:8r6+k rved track from point A to point C under the influence of gravity. What would be the direction of the cart's18rzv or: +k vrs6r jy8v.yv-h acceleration at point

  02.40: A box with a mass of 50 + tex abg0 /,aehp1d.afwtamijtl* r75e;0k5kg is dragged across the floor by a rope which makes an aek51 e,t f*a aj/dah t ltrmib0+0awgexp.;5 7ngle 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 of 20 m/s as shown in the diagram?

  04.40: A 6.0 kg block initially at rest is pushed agains;gwa/z-gpkn 1 t a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of static friction/ g; 1pzwgnk-a 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 horj;eei6t+b1rpcg/wx 0 izontal 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 followw/bg pe1+e ;60ctirjx ing 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 6s gjb.1:et ly4w2 eoja hnw.:moving. Which of the following statements concerning this situation tejwbo.jy2e lw 6sh1: .:4nagis CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is pulledcbb r5)e) dvi/: ogwv9 up a hill with an increasing speed. The crate is not fastened down to the sleigh. Whatv9ro bb)ic v5)/ ed:wg force is responsible for the crate’s increase in speedup the hill?