99.36: What happens to the inertia xn1ve41-vwv0lsxkmp 7 s-e,mjc7* rxof an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does 1n 7t.i 35wxudftr p6inot depend on the quantity of matter present. Which of the following properties iud5nt6w.7i x3 tp r1fis NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth.zdi59 oce7gx3 Assume the Earth has masg9o 57z3ceid xs $5.98 \times 10^{24} \; kg$ 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 f r.-*f ibzoig;( fy0:b pi9qnnall near the surface of the Earth. What is the magnitude of the gravitational force acting on the e fzniyn ig.;b:(*poq9 b-rf0 iarth by the sphere? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s vel1w r;vd 5 s:dzfmprs25ocity to increase while its acceleration decr:drmf5rs s z p;12dw5veases?

  00.11: A certain particle undergoes erratic motion. At every pvt3)d -b q g(c2. uqxn9t3skkhoint in its motion, the direction of the particle’s momentunkt)2kqd3h (qt9 bv g3-c.sxum is ALWAYS

  17.14: A block is suspended in the edxo;8 3kshjsfr4(-k air 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,;dfh4e- jsk83 o skx(r 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 th qlnpbp3o7;4x.wc1 fne net force constantly zero on the o bq;1ol7p.nc4f xp3 wnbject?

  13.28: An object is in free fall close to the ground. A persor0.ta8zvtu* b:1 hgn xn intervenes and slows 0rb1az u *:thngxt8v.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 of the acceleration from gravity is g.

  98.03: An object in equilibrium has three force1hgt w((7puzpn13oi 6grf dqvsx 4+ygg u/. q0s, F1 of 30 N, F2 of 50 N, and F3 of 1+n y6op0gd7x3t 1 gqg .fruisqv(w( zup /4gh70 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 krtu2 v fb9w m2m/qud+j6/-hbbe combine to form a resulb+vuf/u-tm 6qj9b hr/k 2dw 2mtant with a magnitude of which of the following

  10.06: Which of the following statements is most closely asso( 5nqjgtpxi6 .ciated with Newton’s Third Law of Moiq .6gpx(5 ntjtion?

  95.06: The reaction force does not cancel the action force because:1*, (e p glfacn;chkjxh-53 od oe5z6c

  14.14: A box rests on the floor of an elevator. The elevator is accelerapuboefpga dl6mx))s()cnm c* 87 8k2b ting upward. Which one of the following choices best represents the Newton’s Third Lag) f7)e(cdkn 2pblmupxo) 6*as8c8m bw pair force to the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls downward through the air with consq6 *cx1s ytj ey3.z7u.b)l hyhtant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance acting on q.1 6xuszc7)y hly* et3.jbhythe skydiver during the fall?

  06.08: A baseball is thrown by a pitcher with a speedt0pz-n63ea ij of 35 m/s. The batterswings and hits the ball. The magnitude of the force that the ball exerts on - jae3p0znt6ithe bat is always

  11.13: A physics book sits at rest on a table. On top of the-hm00 i hhwj4u book is a calculator, also at rest. Which one of the following choices is the Newton’s Th40uh 0hi- jwmhird Law pair force to the force that the table exerts on the book?

  05.06: The students in a Physi.6qt9idl: lw 6 ga3;vbp) ww1x-bksiccs I class were in lab conducting an experiment related to Newton's Second Law. The collected data were displayed on the graph at the right. From thig.: vps-aqbbtdi6i; x1ww6w )lck9l3s graph, what conclusions can the students make?

  99.03: If the net force on2grli no8jh 33i:q* bq an object were doubled while at the same time the mass of the object was halved,then the accelenohgqi*:32 j 3rbi l8qration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly )rm(ra . 7) jrj01vpskva/jspfrom rest to a speed of p)p m0. aj/j(arv k)jr71vs sr20 m/s in 10s. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is travr , ;,czhg+ /nd(4o4khjf5sp.gvt wpyeling down the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates foryp4 pn jwk/,h h;fo,g( svz.gtdc45+ rward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explains n 3ni ,4-tp+s0x ayngxwhy large tractor-trailer trucks generally accelerate mu +typ3ainx ns-40gn x,ch more slowly that automobiles?

  99.19: A 50 kilogram skater at re*6r um-q,n87vuvh k.7egd6kus rb p 4:sigpf2st on a frictionless rink throws a 2 kilogram ball, givinvur6g7 hrb :*fkv ,s8 ks7umd.ip 4e-un26q pgg the ball a velocity of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface of the eazue ;z lrgz,*oe6ir8 4rth with a weight of 100 newtons is accelru o rg6,e*lz; 8ize4zerated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 12jxt 42r.8g zmj00 kg is accelerated from rest by a constant force of 2400 N. What is the speed of the car 8.0 stzj j.4rmxg28 after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 mgew33 n5xj0+/c;i0ip nqpf,mxvn y y; /s slides across a rough horizontal floor b; gnv wiyjmq x+e30n3 fp,p/cy;x 5ni0efore 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 4.0g q*y4;t epma: m/s slides 8.0 m across a rough horizontal floor before coming * ygm qt:4a;peto rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at resthh0t:uju q;*:)w., 3mzbuasotlp .vt on a horizontal surface while a person pushes directly to the right on the box w.q 3 w:t;hzlu* j ovumt.ts0,p:u ab)hith 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 accelerate hib2ka0 /2ukql0au4 jwu2 mi0s uniformly to rest on a horizontal surface. T2j02au /0b 4wiqlaku0umh 2ki he 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?

  00.21: A car of mass m slides acrosi t b 0do,atfybr4zm* 6(e4(zus 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 andztty(br z4ui0 be6(f,*o4dam 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 speed8* nfqi)ki(doo), kfv +bjs4 *dbs -mr v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic frictiofbm)fnkd * s8 q*b+)ok4(srio,d v- jin 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 slam evclojsaxp0.c++q:6uf/ o 7sepu -4qming on the car's brakes and skidding to a stop. How far would t.: saeuus x -ovccep +j0lq/4o7qf6+phe car have skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully c7 lcpob 3azg4rv-w9z1ontrol each of the following devices. Which of these devices can cause an c9g4lzza7b pow1-r v3acceleration in a moving car?
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net force on a rocket witaio5rby i8i zew*rq4zqh** +)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 36 m/s near the surface of the Earth at tzh *8 5oei iry*qibaq+rzw)*4 akeoff?

  07.21: A box slides to the right across a horizontal f1wgws ,q )1iv fc*h)tcloor. 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 frict wi)g)t1 qfschw,1c*v ion 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 equal leng hgas(l00p6kx th. Assume that on all tracks the roller coaster carts start from rest at the sa(6phs 0axl gk0me 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 eqg4m1- hf (rwybual length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and movesw hby1(4rmg -f 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 frictionlessl.rm. d o/ iy20xh-pftty along the curved track from point A to point C under the influence of gravity. What would be the direction of the cart's accele0mh ot/i.d2r-fyp x t.ration at point

  02.40: A box with a mass of 50 kg is dragged across the floor by a rope which mbcg1prpm -(* oakes 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 o-pbp(g*1cmris 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 against a wall by /v*o tuxdlp 9 yzl.rs9vc5p50:fsbi)a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of static fricv/srb . pl i)pclzux:5vf0tdys 9o5 *9tion is 0.50. What is true of the friction acting on the block after a time of 1 second?

  05.10: A homeowner puz5h e)z5ntkn/ shes a lawn mower across a horizontal 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 magni/nzk h5 n5)ezttudes 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. Whki+ 1y*l kl*fj.gyn ji41 :eloich of the followingo*y il4i :n y*ll+jkj 1f.k1eg statements concerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a,/4.vepyw :sh*ee9r+ cjkovh sleigh as the sleigh is pulled up a hill with an increasing s:ejh9*se.p4yv vc w+/ rho, ekpeed. The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?