99.36: What happens to the iner mk (cr3.+ne)a*p4yz fhqh3mi tia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not(6mwclcmi +z jz 0+hp4 depend on the quantity of matter present. Which of the following properties is NOT an intrinsj(zm+ch4+pi 60m zcl wic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Asgxirr5p7n nhu 0-bpac6d1:t6 sume the Earth has mas d 5nrt np0c6xa:hr7upig1b -6s $5.98 \times 10^{24} \; kg$ 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 spherecsyg4qun)* z )ji(k.zl.kq 4l is in free fall near the surface of the Earth. What is the l .* q)j zzlics.)qk4(4yn ukgmagnitude 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 its accelerati;d4qd x uoqx85on decrease x5o8dxu4qqd ;s?

  00.11: A certain particle unden r16em9tha ;nn .dv2ufp1 zf3o5.gfw rgoes erratic motion. At every point in its motion, the dir v9rz .f3f.6ew1g2fn mh5tona;1up ndection of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at tht,;nb5aa u7f) hz jza*e end of a string held by a person. The person pulls on the string uniz5,) * ajhanzf u7;tbaformly 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 situati .8cue5ux,spxkk xyb.ny2i2 4ons is the net force constantly zero on the objeceucy xk8.snx,p 4 b25x2u.ik yt?

  13.28: An object is in free fall close pof)7m(*ub w jf6h+ )w)mtvgdd co5;g 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 object’s acceleration is a and the magnitude uhot)g d+m 6 ;*c)mjp) wdgovf5(w7f bof the acceleration from gravity is g.

  98.03: An object in equiv4z3w/ 1q9ergidg+ssn 1t5w c librium has three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 iew9cnrqg13w 541t/g sdszv+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 combi;ft:4 6g zve*)c ,0mq blfsqvine to form a resultant with a magnitude of:60ib ,gq*f t zfec vqls)v4m; which of the following

  10.06: Which of the following state9jhszro psy.rbsoy9o 3 ,-sm4 ,gc;a -ments is most closely associated with Newton’s Third Law of M s3rs9-hr,9m o,sbyg4pojsoya-.c ;z otion?

  95.06: The reaction mqf(w:u.o4 wpforce does not cancel the action force because:

  14.14: A box rests on the floor of an elevator. The elevator ivlr r;9hahe 2+o5vk,js accelerating upward. Which one of the following choices best represents thea2rhe lv5,;9 + vhkroj 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 ai0ls9f7 k xl7zd4ds7lk r with constant speed. Which one of the following choices co7 z407k9fxlld s7kd lsrrectly 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 speed of 35 m/s. The batir89 3ihmd txv l0ya)(terswings and dr3 v0i8(alhm xti9y)hits the ball. The magnitude of the force that the ball exerts on the bat is always

  11.13: A physics book sits at rest on a tdgs4cs*3 hal1gqef-9oz t60yable. On top of the book is a calculator, all 9d1 coe*0a-4sy3gqsf6zhtg so 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 ins*d+ a tgm7oy:d 0+mja lab conducting an experiment related to Newton's Second Law. The collected data were displayed jdma+ta g+: d07osy* mon the graph at the right. From this graph, what conclusions can the students make?

  99.03: If the net force on an object wer3rap peggz( n 0vm1f:)e doubled while at the same time the mass of the object was halved,the)n gm1 p3geva0p(rf :zn the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniforml(az n;h1uo+bp y from rest to a speed of 20 m/s in u o ha(z+pnb;110s. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer o*rlcop7v-w(r v ;ac4h39 zb,vs) zlotruck is traveling down the road. The mass of the trailer is 4 times the mass owcrav*-) 4v3ph9s zo ;ol r vz,bl(oc7f the tractor. If the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explains why large zr v/q- fr*gc6tractor-trailer trucks generally accelerate much mzc* f-rvr/g q6ore slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a 2 kilog+2m odyc ,2io3 vhn5n/sds )riram ball, giving the ball a velocity of 10.0 m/s. Which m2 23ivodh cn)yo is,nrs+d5/ statement describes the subsequent motion?

  00.13: An object near the surface of the earth with a weight of 100 nx w4+npt9 e9akewtons is accelerated net9kaw4+ x9p at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerate 0ing: 6-8ng.xslsfi fd from rest by a constant force of 2400 s6ixf80ingn f.g s :l-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 across a rougb;lz0 a6hdk4szcgva c/dr;3.o7g j. i h horizontal floor before coming to rest. Theggzj64 7adc;rc/kd;b azvs.ohl30 .i 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/1z.lr m,e ,dx1vanp563v hp 0ftzpdx.s slides 8.0 m across a rough horizontal floor before coming to rest. The coefficient of friction x x ,5t. p.dzp ,rv azvelmdhp113fn60is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a person rnz/ nug3tm ) d-3p5yupushes directly to the right on the box with a force of 60N. The coefficient of kinetic friction between the box any t3u r5pu)g-nm3d/n zd 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 rest on a huz4 56asm;j:b9o/zisf pfdlnd. 8n.m orizontal 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?f9j:zdm ui.4s.fp lzb d8ao;6/n n5sm

  00.21: A car of mass m slides across a patch of ice at a speed v with itsaidh-wn;ry6 ht 37ngbu 8 gl, t..ixt; brakes locked. It then hits d3 .t8dx,rnuabiitt hn-;yw.lhg7 ;g 6 ry pavement 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 mass of 2m, it would have skidded a distance of

  00.22: A car of mass m slides across a patch o(u d4. vy6jyg(a.un+cj5jood f 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 tir. cuadjd j4y o(gjo+n y5vu.(6es 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 thfkmrz-iu4l5-q n .;pwe car's brakes and sk-f pqi-k54 lzurw;n. midding to a stop. How far would the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an autom46 o u8is zg7yiw5u2u,h d+ollobile must carefully control each of the following devices. Which of these devices can cause an oh,u6zu4 l275 sgyo8 i+uldiwacceleration 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 newtons is 24000 newt 2c q2z)y(wdk77 nfekzub 6e*pons. About how much time is neede(67q z*p u 2wc)bzenk f7de2kyd to increase 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 ri o(ebh*u)d,v;kq)j gvs4s ( txght 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 lax k;4b() eo jvgs*vhs(d,utq )rge 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 co /z.2-btlkg/v sx;zojb7w, qi aster tracks of equal length. Assume that on all track7k/bwqs. g i,tzb/lz2-jx; ovs 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 equal uigem5b*/ r/ dqb3de uj;6:hplength. Assume that on all hi5e3g*/mj rb/bd;p quue6d: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 cr*mfiv h22 4f09wdu vgartrolls frictionlessly along the curved track fr 20vg9*hfvmf42idwur om point A to point 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 across the floor byf-6 hk8bw9 qulwf1 px7 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 required to move the crate at a constant s7b qfp69fulk1- xwh8w peed of 20 m/s as shown in the diagram?

  04.40: A 6.0 kg block .o0l zndij/z)(6q*zm3xfl(y gu e;cz initially at rest is pushed against a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of static friction is 0.50. What is true of the frimlzxydl(/ui.ozz(j)ec*z0n6 g q3; fction acting on the block after a time of 1 second?

  05.10: A homeowner pushes a lawn mower across a horizon n) dxqrf47x(jutp7w)baa n29tal patch of grass with a cons)tn xunqjx 927fr7ba d)a4w p(tant 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 is CORRECT?

  06.14: A book leans against a crate on a table. Neither is moving. Wh p n4r*vi ag,axza2m72ich of the following statements conraga,x24 mizn 7av*p2cerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as th43il ; /rvchhuj3gv7qi vr/r) e sleigh is pulled up a hill with an incre/q;3r ihvcvrv /uljg)i 34rh7asing speed. The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?