99.36: What happens to the ineu i )pqi9*5cg2bvi*tc rtia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not depend on the qttho--se rh yj4c0zt-5 b/w )xuantity of matter present. Which of the following properties is NOT an intrinttb0h)c -xw sj/5et 4o r-hyz-sic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume the Earth hass: zi-rnlv/tbl9 r8*x ma*z tr x:8lnl rs-i/9vbss $5.98 \times 10^{24} \; kg$ 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 +hmj /3hl kxlm jahj*kq92:l 6surface of the Earth. What is thj* hh2jlm lk9 /mh3xl6+k:ja qe magnitude 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 intisp y: f:z12ubwaf -p1us q-e8lg/d 7crease while its acceleration decreases?qwpf: bf-tu8l1du217gzse p-y ai:s /

  00.11: A certain particna-ax0 z*ums cs7(;nn.tp* lile undergoes erratic motion. At every point in its motion, the direction of the particle’s momentum is Aas*-a.(unpsnx*;ml 0 n7 tz icLWAYS

  17.14: A block is suspended in the air at the)6edn(d o0go4z3b xhm end of a string held by a person. The person pulls on the string uniformly accelerating the blod)d o3 boghm4exn 06(zck 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 fox+/yti vo.qk 8rce constantly zero ox/t+io vk .yq8n the object?

  13.28: An object is in free fall close to the ground. A person intervenes aut9y,xn2b gz/ nd 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 ygzx9n b2u, t/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 equilibribiqx7.:jhnb.m; /8m dhyrn 3mum has three forces, F1 of 30 N, F2 of 50 N, and F3 of i3 nh.n;hmb: jd/7xm.by8mqr 70 N, acting on it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can be comby06n+ijs iuzdy)d+ 8fine to form a resultant with a magnitude onu+f )yjidd8z 60 s+iyf which of the following

  10.06: Which of the following statements is most closely associated witovea1ddefc gd263 4/k f*j0zi h Newton’s Third Law of Motiond3k/ ed2 cie6o0*jgdva f1f 4z?

  95.06: The reaction force does not cancelcpp hxk(( ja l1csi:,,k7ra,d the action force because:

  14.14: A box rests on the floor of)zm u8,p xp:np an elevator. The elevator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational force 8 xpnpu:)mpz, acting on the box by the Earth?

  15.15: A skydiver falls downward through the air with cop ox2y- 4z*wannstant speed. Which one of the following choices correctly de4azy now*-2xpscribes the Newton’s Third Law pair force to the air resistance acting on the skydiver during the fall?

  06.08: A baseball is thrown((j an z ts1+z0fmsv-y by a pitcher with a speed of 35 m/s. The batterswings and hits the ball. The magnitude of the force that the ball -s0 (sjz1tfv( amnzy +exerts on the bat is always

  11.13: A physics book sits at rest on a table. On top of the tez+v j. 4duh at9*y+xbook is a calculator, also at rest. Which one oeh t*9 vx +dayz.u+4tjf 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 -mg,7;avvlum t ig/2v+azh8 ou 0s jq(conducting an experiment related to Newton's Second Law. The collected data were displayed on the graph at the r(m/ gv0+vaou;aqsuvigz,t7 h m82- ljight. From this graph, what conclusions can the students make?

  99.03: If the net force on an object werqc do0;*3ytxlgsjl z-2) .bakyvpx9 y3a7v- fe doubled while at the same time the mass of the object was halved,then the accelerationq;.ay)- 3vjx f2 ts*7 y3xlcog d9bp-k 0zvyla of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly from a fx2a,f6i(qswcd( i d152oyzrest to a speed of 20 m/s in 10s. The magnitucs2 iw,zdaa5(6iqf2oyf 1d( xde of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass of the traj q1fhr2alr(51ud 7,v*evor riler is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the trailer applies on the tractfje(5do u lr,7rr v2vr* h11aqor is

  99.16: Which of the followin)1;cfv iiv w7g1hl6nm g principles best explains why large tractor-trailer trucks generally acceler1igi 6)l n 7mwf1v;hcvate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink th 5ot6 cje ,,vjvxr4y)6 i7fcg-es) ffgrows a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement describes the subs7 c4fivcg6ef- t5)jj r,xg ,fy6)veosequent motion?

  00.13: An object near the surface of the earth with a weight of 100 newlo,5k d s o3hvtsp8q5)tons is accelerao)p h83 stvks5o,l 5qdted 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 ref xoaud/0r+(den.9crst by a constant force of 2400 ux/dre9 0rnd(fo+. ca N. What 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 acre ouhd*fm2 /p0oss a rough horizontal floor before coming to rest. The frictional force actinou2edpf *hm/ 0g 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/s soxpc(m /t,0d4m oc3u(rm1vv hlides 8.0 m across a rough horizontal floor before coming to rest. The coefficient of friction / xt(hmo10cporvm3dv(,4cu mis:

  09.21: A 20.0 kg box remains at rest on a horizontal surface ye b )lv6p3vn fvd ;zo;xkg7(0while a person pushes directly to the right on the box with a force of 60N. The coefficient of kinetic friction between the b(zn6bveplfgv3)xo vy ; kd;07ox 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 resu (ppxu5h-ib ultur 1d;t4mlrpr2 7(5 t on a horizontal surface. The block travels a distance of 12.0 m during the slide. Which one of the followingul52 pu57ip-mr td uxu((;r41bhl rtp 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 speed v with its bra4ua o pw-xr. e r(cr1 c3o:utcsh653lwkes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic friction betwt w3 ou- r6 :.ec1c4pocrwuxlrh5(s3aeen 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 m1,q sagb7babh548n u n 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 between the tires and the dry road,ab 5nbgh48ua s71b nq is μ .

If the car had a speed of 2v, it would have skidded a distance of

  04.32: he driver of a car make ex,e )xy::ckks an emergency stop by slamming on the car's brakes and skiddin yec :xx)ke,:kg to a stop. How far would the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an autokal mhqtmj1*3k 8u.l7mobile must carefully control each of the following devices. Which of these kkl .lj1 amqt8h7m3u*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 with a w-0:(l5fw to6p mjk;wuv 2tvd) hdv8bs ogsn2 9eight 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 neaot)od2sw 9ms 6(;l2vwufnd8 v-p5 v: 0t bgjhkr the surface of the Earth at takeoff?

  07.21: A box slides to the rigodjzp u9x4c :x1x(z u*ht across a horizontal floor. A person 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 :*4xzz(cou 9jxp1d u xthree forces exerted on the box.

  02.27: The diagram below shows three roller coaster tracks of equqt:q 2dic(5r ral length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessl 2 iq:(5tdcrrqy 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 rq 2tojtfic35d*vc8d: ybls00oller coaster tracks of equal length. Assume that on all yqid :tlo5d2s vb0*30ft cjc8tracks 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 frictionly glo6-y waf j,z)*p7xessly along the curved track from point A to point C under the influence of gravity. What would be the direction of the cart'wyg6p7lox fya)-j z ,*s acceleration at point

  02.40: A box with a mass of 50 kg is dragged across the floor by a rope whichkv:p a6mnv2y / 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 ismy2:k6/a vnpv 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 agai -dgoawnwfd8j4l6 a/2 nst a wall by a 100 N force as shown. Thecoefficient of kinetic frictijofa6d8 /- lg ad42wwnon 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 mower across a horizontal patch of gxie2rjqav*mz3; v5 *,n/ngm-x i xvau 9/u.azrass 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 magnitudes, W, f, N, P in i3 xaz u/iv*jmug-xex5 mvqv.,*rn/9 za;2a s CORRECT?

  06.14: A book leans against a crate on a table. Neither is moving. Whic8osvmac+ 8-yg h of the following statements concerning this+88o vsacym -g situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is pj3-z++bvxv l-u dop j3ulled up a hill with an increasing speed. The crate is not fastened down to the sleigh. What force is responsible for the crazl +ju+bvdjopv3-x- 3 te’s increase in speedup the hill?