99.36: What happens to the inerm; 8l.1xjvx8zotz.0ot, os m ptia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not dep-gi adaavfh5uxj(i /k93*d3 iend on the quantity of matter present. Which of t9g-u 3j*/av53akhxddaii i(fhe following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume the Earth h,li*fhb*dxx(5cz +dgb c*rv3as mass bx f* h(b*g3+ z*dcrv, c5ldxi$5.98 \times 10^{24} \; kg$ 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 zqglvs o;up vebu/6 +.,9(q0t9 udpud free fall near the surface of the Earth. What is the magnitude of the gravitational force acting on the earth by the sphere? The Earth mas z.;boq( 6v 9+d/e,uuuuqgvp p90sdtl s is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velqv4y uo-f)gci)2t1at ocity to increase while its acceleration decrea ) vg2qao4 u1yc)fitt-ses?

  00.11: A certain particle undergoes erratic motion. At every point in its motioppi+)7 *vi uv9o2tg msn, the directiopv +tv7ip2 s*)guom9in of the particle’s momentum is ALWAYS

  17.14: A block is suspended d.7v*z+1bdq ibqejg i3:w6ai in the air at the end of a string held by a person. The person pulls on the string uniformly accelerating the bl:we6qd1 ibiv3 .i* ajg+bdqz7ock 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 th b8b(ec znt8rtp1*0q2q ok +u2s zkqm4e net force constantly zero on the obj p80q ztbokk*e c4m u(qnq r2z+s81b2tect?

  13.28: An object is in free fall close to the ground. A(t(.xkuwoht rk/v ( d* 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 obje *dk(ktu.trw hx/(vo (ct’s acceleration is a and the magnitude of the acceleration from gravity is g.

  98.03: An object in equilibrium has three forces, F1 of 30 N, F2 of 50 N, and F3 -j1d1ak lx-j j scl-n y5by0,u4)ksso6ltjw9 of 70 N, acting on it. The magnitude of the ryx-k bk1 nj4),0 9s 1-sawujydsjlto-j56llc esultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a f.m/3 x5xhxo.q jhu2 azp-vf5lorce of 10 newtons can be combine to form a resultant with a magnitude of which vz5 axh .olmxfx52qhu/.j3 -pof the following

  10.06: Which of the following state;ln.yf (74:boh9qywin ana b*ments is most closely associated with Newton’s Third nywa7lb4in : a.h fyn;*9q(boLaw of Motion?

  95.06: The reaction force does not cancel the action force becx ojo)nd-a/v; 5ik*f;rzj r++ ks1,9n djiklg ause:

  14.14: A box rests on the floor of an elevator. The elevator is si7x p2h1r11j4qxj us :9o adpaccelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational force act1srdjhpjx19:i o2 q u7s a4p1xing on the box by the Earth?

  15.15: A skydiver fallh3pq3 wq9hbl 9s downward through the air with constant speed. Which one of the following choices correctly describes the Newton’s Third Law pp h339qqwl 9bhair force to the air resistance acting on the skydiver during the fall?

  06.08: A baseball is thxqc. nr1z3sxlm40jh m h*u)8qrown by a pitcher with a speed of 35 m/s. The batterswings and hits the ball. The m lm84z. rx)qcx *10jhnus 3mhqagnitude of the force that the ball exerts on the bat is always

  11.13: A physics book sits at rest on a table. On top of the book is a caf7w ybd6*lw,clculator, also at rest. Which onel fwy6w7 d,cb* 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 we/mm3te;nd( ic re in lab conducting an experiment related to Newton's Second Law. T d temc;i(nm3/he 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 do-- igqva e2grgc6an2ex3 +,ulrt8d t6( cy:u gubled while at the same time the mass of tgc nt i 2x6tgye+3-d au86q2ger,aruc:-lvg(he object was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly from rest to a ;g rtaf3p4h3h) xej4lspeed of 20 m/s in 10s. The maxj)t4 gh4pl 3fre3 h;agnitude of the net force accelerating the car is:

  99.05: A tractor-trailerf+9eo jv. dl4e truck is traveling down the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the trailer applies on the tf+. dloe e9v4jractor is

  99.16: Which of the following principles best explains whn zz8ehj3 e(k,* p:ktiy large tractor-trailer trucks generh t,k z*zien (e3kp:8jally accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws adlr,qd+ dd h/ 8hj8i se*;db:n 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement describes the subsequent mo/n*d+id, sredqdbh:8j; 8 ldhtion?

  00.13: An object near the surface of the 1h yphz :hbv)e+j/zm0 earth with a weight of 100 newtons is accelerated :pvhb 1)j yz+/0hmehzat $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accele(:ypcn mbyb3n92 bwu1rated from rest by a constant force of 2400wc mbbb1(p9 uyyn23 n: 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 acr ow1qkat ch7b2 aa1c+-oss 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 twh7t+aa ckab1o1qc 2-o rest?

  95.38: A block with initial velocity 4.0 m/s slides 8.0 m across a rough horizon , rcunh4/9vw7 5 e :9e :fdwos7zmxl;dm6qtjhq;wmto4zc:f:6 s7xj5rdewme ,v/7 n ld9hu h9 tal floor 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 wvlkb7: zisdr :)6 2nwpushes directly to the right on the box wivdw)s b nzl2 kr7iw:6:th 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 accelerat(k+ 7 wx wa5b4.vzmxmpes uniformly to rest on a horizontal surface. The block travels a distance of 12.0 m during the slide v.k+apxm(w b7z 4wm5x. 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 acro jlu**e )fzv:gss 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 is μ .*u *fvg)lz j:e
If the car had a mass of 2m, it would have skidded a distance of

  00.22: A car of mass m slides acros9oj7tgiyu2s. s 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 kin9ygi.o su7 j2tetic 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 emergene8fp dl0 c/zg7(yr t y/u27nency stop by slamming on the car's brakes and skidf(/ctde2l8 07/nr7zyy pnegu ding to a stop. How far would the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully contu5i2 ib c3s6ohrol each of the following devices. Which of thescs5oi bui263he 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 weight of 15000 newo k1effh cqrx7r h3:.n :x,fw*n-x n)ytons is 24000 newtons. About how much time is needed to inhf.n1)xw:xc fxfer*y: , nnh o7rq3-kcrease 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 right across a horizontal fkwj*rdqr9g.wyivp 8/+b2(j oqj7f b0loor. 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 hj9(.+2b*w/iopj y dvrfr7gbj8 k0wqq alf 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 c/r)qx4m ui.4x m. rhx8 udy:s v8bs4qnoaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly over the tracks4 ybnm/hu 4:x8ri s .sx8d4v)qu rm.xq 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 thre, n.tj-h+vkaysqdu/7e roller coaster tracks of equal length. Assume that on all tracks the roller coaster cynq.-7,hu sj+a /tkdvarts 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 frictionlessly d(/wfv y 7qcx4along the curved track from point A to point C uc q/xv(wfd4y7nder 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 floq )vqtmp;g; cs8+r k9mor 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 a 250 newton force on the rope is required to move the cratpqv ;t)qm9+crgskm8 ; e 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 a 100 N forvo48 v:-vf mxi 0dc.oace as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of static friction is 0.50. Whatv-mi:vaf48oo .0 xdc v is true of the friction acting on the block after a time of 1 second?

  05.10: A homeowner pus e6)zvflyn c+u6n8 h-dhes 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 magnitudes of the various forces on the lawn mower. Which of the following rel6-zc ul+n8d) 6hfnev yations 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. 5 :eq6a yuvfn)Which of the following statements coqf 56ue)av n:yncerning this situation is CORRECT?

  06.15: A crate of toys remains at rj-gbkj2ylum.ze - (7hest on a sleigh as the sleigh is pulled up a hill with an increasing speed. The crate is not kl.ygeh 7jzm-u( b-j 2fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?