99.36: What happens to the inertia of an objfpwak jq 2i0zs 9v4s30v;sp jd /33lwsect when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not depend t 4b z8 4asw -rt ,8dc;kus(gbyvvj*+oon the quantity of matter present. Which of the fos8a+4vb,t yrgob-w v8ujkzt *d;4sc( llowing properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface i c y+o .03nzspm+ 4wi-+clviwof the Earth. Assume the Earth has masspzs0ioi 4 lw3m+c wi+n+cy -v. $5.98 \times 10^{24} \; kg$ 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 surface of the Earth. Wh g*n 5umdlbr ku;j:s4i)7)rgq1 exo,fat is the magnitude of the gravitational force acting on the earth by the sphere?)r;imfgs,lr15 de7uu :bkn4o*j)xg q The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to increase w5:4ai sab(kqihile its acceleration decreq4si aa b(:ki5ases?

  00.11: A certain particle unde,5 diyn/er:j44o-o d bq vge5krgoes erratic motion. At every point in its motion, the direction of iq jke,r-d /on5o4ybg:de54vthe particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at thu+3j iv)uu yw 7b9;eq0e4ju83ixrdhv e end of a string held by a person. The person pulls on the string uniformly accelerating the block upward for a short time. Dyvueuu+9ri i7 q; v j 8x0wd33jb)hue4uring 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 force consd3 ;2x t xm-fsh,qo5setantly zero on the obj ,e sxm5 x;3s-qho2tdfect?

  13.28: An object is in free fall close to the ground. A peo jt 8fw1x5nmd9:hc: drson intervenes and slows the object uniformly to rest. Which one of the following statements must be true about the mag:w c 58m9dfxtdn:h jo1nitude 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 equilibrsxd1)yevou;:o md g,)nx1c3oul) st8 ium has three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, actingog1 )1s;v)c3d u:8tme,)doxxuysnl o on it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons ca.1( x 8 rr:zzztvtivb0n be combine to form a resultant with a magnitude of which of the fol txzi.t0r 1(zzv:r b8vlowing

  10.06: Which of the followin+ta32p5q 0sftjede,b(+q ji rg statements is most closely associated with Newton’s Thi2+ 5r e epf,dtsbja jtqi0(+3qrd Law of Motion?

  95.06: The reaction force does not canes* jrdus ws4 7)5e ty3l9ib8qcel the action force because:

  14.14: A box rests on the floor dhndhuwm/5* e2zpn wd-jn*:7f)bt* gth ug/ 7of an elevator. The elevator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to t- *djwe mu5/ un )n27:wd*bz /ptnhfhdghg7* the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls downward through the air withmim1 ckdwg0kg(ea yl9 **5tt( constant speed. Which one of the following choices correctlt wa(*meg9m0d *y(t1i5 ck gkly 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 wim+thww4 n2/) )dwl.4mjua ondth a speed of 35 m/s. The batterswings and hits the ball. The magnitu4 wu4ldj 2+m./ twd nnw)a)mohde 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 gumx7q*fx(4f of the book is a calculator, also at rest. Which one of the following choices is the Newton’s Third Law pair force to thexq7*umg f (x4f force that the table exerts on the book?

  05.06: The students in a Physics I class wer2 qtc r)h64yhze in lab conducting an experiment related to Newton's Second Law. The4yhz)qc26 rht 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-c 5c ng57 0f;fjwkfou an object were doubled while at the same time the mass of the object was halved,then the acceleration of thc j;fon7f5k-5uw0 gfce object is

  96.15: A car whose mass is 1500 kg is accelxa :uf/3 n.7zf/qdj(1wlop 4z cj2tyverated uniformly from rest to a speed of 20 m/s in 10s. dn2 fqzzj3lwp:uay//x1 vo7fj(4.ct The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass of the tracmsgohigr p6 4()r 2c8iler irrog m i s6cc4)2h8gp(s 4 times the mass of the tractor. If the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles 8tz*d;w)z znbgi ze:8best explains why large tractor-trailer trucks generally accelerate much more slowly that auteg d; wbnzz8i:z*8tz )omobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a 2 ki-ue 4rknwcsci0rn3 (g-y5pe)l8q w8tlogram ball, giving the ball a velocity of 10.0 m/s. Which statement describes the3n8sw gt- ( pcn)uly 45eirrw-e0 c8qk subsequent motion?

  00.13: An object near the surface of the eart-l) zh xt/yflt*b* aola684doh with a weight of 100 newtons is accelerated y-boh ld6tl */laxz oa8t*4f)at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accel7k )efxt 3vpm4 jhl 8xcj -r0);vph-ylerated from rest by a constant force of 2400 N. What is the speed of the car 8.0 s after beginnikpvp-7jj m hx)0cfh-l3ev 4x)l 8rty;ng?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a rough xub9eg q +(s8e0i 8-vdsqxf(ehorizontal floor before coming to rest. The frictional force acting on tsubi9+ev (8 gq8 dx0ex-fq(eshe 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 slides 8.0 m acrosv7f b f4hb3f:ws a rough horizontal floor before coming to f37vbfb :hwf4 rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains atf mgs qq6z6l6a 0x.9wumn zan( ,xox78 rest on a horizontal surface while a person pushes directly to the right on the box with a.76x u6fq6n9,ml (qsmzw nx 0a za8gxo 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 /5sebrjh* el2,i0 n,c3uz wgn9zvz+ nxi7hu )s uniformly to rest on a horizontal 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 *5ehxz3n0bjni nwr,)ehg /zu s9z cu7 v2+il,the block?

  00.21: A car of mass m slides across a patchv85 xf;s pcmx0 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 kmx xfcp50 ;8vsinetic 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 sli/d8 xzeb4 0xpae1gg* qdes 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 c0x4g 8bqae zxg1de /*poefficient of kinetic 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 carx:8 m(y*9dx +nu3numw6qg *:yp:fc+la a ital's brakes annlm6fxtq *pu:9l:na8i+ + ym*ayd x3u :cw(agd skidding 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 control each of vc4d+hi(cq18hw3x zhc py 6(d+b j5s lthe following devices. Which of these devices can cause an accele(wqcs++6d d 5jhhil xc4ph3cv(zyb1 8 ration 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 zl3(gb) la.u nnewtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed from zu) 3bng.l(al12 m/s to 36 m/s near the surface of the Earth at takeoff?

  07.21: A box slides to the right acroz/bwg ttwi mvbf6p* i5 :g izk4j9b3.z5b o2k6ss a horizontal floor. A person called Ted exerts a force T to the right on the box.b5t63zgpi: oizw f2v t5bbwbkg jzm9* 6/i.k4 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 roll:.d60w:zlbvxtf m;qo er coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevationq6xlm:f;dw :v0z .t bo 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 shn 48oxjh5q b0t u)zsf:ows three roller coaster tracks of equal length. Assume that on all tr uz)t:hqs0f x4o 5bn8jacks 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 frictionlessly along the curv1g9 m.a01iyc:hpxq)wgc,ae vv/.itged track from point A to point C under the influence of gravity. What would be the direaviymg):/ 9w.itqxv,c 1a1 e.0cp hgg ction of the cart's acceleration at point

  02.40: A box with a mass of 50 kg izs)jc4 ,) 0vb0s/xk fz3txn9 zl g8owbs dragged across the floor by a rope which makes an angle 4,3g 0o/nxzzz)wf 9cv8 )bjlbss0ktxof 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 against a wall by a 100 N forc ckxw j:1d,io;wdn e43lx0m (ee as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of static friction is 0.50. What is true of the friction actinl4nmjd;1we(0 k 3 :diexcxwo,g on the block after a time of 1 second?

  05.10: A homeowner pushes a lawn mower across a horizontal p- 9203qc,puuf:sj4y bvzrtesatch 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 v:qb9e2 ,t4y r0zs3-p vfsuucjarious 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 movin /tqdr)gp-pkn-6r y 9tg. Which of the following statements concerning this situation is CORRgt-6q )krt yndp-/rp9ECT?

  06.15: A crate of toy-*m7inl qyu8y1 tk8jy +jxfi1s remains at rest on a sleigh as the sleigh is pulled up a hill with an increasing speed. The crate is not fastened down to the sleigh. What force is responsible for the crate’s i-8n 8f7x+ljiuyykqijt 1m y1*ncrease in speedup the hill?