99.36: What happens to the inertia of an object when its k+ eoz wut28b,1he1tevelocity is doubled?

  02.14: An intrinsic property of matter is one that doe 6*z4z 6dyrjyas not depend on the quantity of matter present. Which of the following properties is NOT an intrinsic property? jd66z yyraz*4

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume thm n5hy5ia 67kd,q al4ed11cyfe Earth has ma 4dd ,m7 ylfn65yak5eaq 1c1ihss $5.98 \times 10^{24} \; kg$ 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. -bd:oiy:v z.ub 9,p wcWhat is the magnitude of the gravitational force acting on the earth by the sphere? Thbypw doz 9 -ci,buv:.:e Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s.r lg3ftt*k)hnt . t)uq7y ek0 velocity to increase while its acceleration decreases?)* fqy37l ..tekt0unthtrkg)

  00.11: A certain particle undergoes erratic motit 9gdt2pdjse7k41x2t on. At every point in its motion, the directi 1x7te4gdd s 9tp2tj2kon of the particle’s momentum is ALWAYS

  17.14: A block is suspendjz3si4 zk;;no.+lz r ied in the air at the end of a string held by a person. The person pulls on the string uniformly accelerating the block upward for aj+.nziso3; i 4z;rkzl 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 for r5 e ;04zvb64jxnrzxqce constantly zero on tqr ex 5zvn4r 0jx6;4zbhe object?

  13.28: An object is in free fall close toy ,hm twvx6(g35m(ips);sfew 3z8k dr 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 of the accelerdvywrz3,( mg) p tif(m3esx k5h;sw68ation from gravity is g.

  98.03: An object in equilibrium has three forces, F1 of 30 1t qeb l3hpn;wopgt +45mc8/;lrb vgll,+ye* N, F2 of 50 N, and F3 of 70 N, acting on it. The magl,lq3y 4el *nvl g mth;8;1b ow g+tb+/cr5ppenitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a f(c48u /hujst l-z qzpdi49.phorce of 10 newtons can be combine to form a resultant with a magnitud4 qh-hizut9slp4( c z8ujp/d.e of which of the following

  10.06: Which of the following statements is most closely associatedisw3a7+scnq8g) y n0ta 9b if+ with Newton’s Third La8 9snyi70 itqc bn)af w+g+sa3w of Motion?

  95.06: The reaction p *ne3;f) )j fdbj zq,4-olrenforce does not cancel the action force because:

  14.14: A box rests on the floor of an elevator. The elevator is kwo.w7e09 dor5q vrt2accelerating upward. Which one of the following choices best represents the Newdrot 2o9w7w 0ev5q.r kton’s Third Law pair force to the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls downward through the air with constant eo)pv ml7+y.aspeed. Which one of the following choices correctly describes the Newton’s Third Law a)pmv7l+.yo epair 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 batters(zc5oh0;ux my6a fb)lz;/tvfxp+ g/a wings and hits the ball. The magnig t ofyczpa;+ l au5//6zmhf0)v( ;xbxtude of the force that the ball exerts on the bat is always

  11.13: A physics book sits at res0x4csd *qsd 5ct on a table. On top of the book is a calculator, also at rest. Which one of the following choices is the Newton’s Third Law pair force to the fod q4sx ccd5s*0rce that the table exerts on the book?

  05.06: The students in a Physics I class were in lab conducti ge4c: f; ;twlmw6nd(yng an experiment related to Newton's Second Law. The collected datel(wfm 4t6g;d: ;cnwya 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 doubled while at the same time,k 5iz //)pwm4*yqx nu)mkdco the mass of the object *mmxdy 5winkzo 4)ckq/p, u/)was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accele9nj+ jo* ampbo+*u xumgv*vnf-i(1x / rated uniformly from rest to a speed of 20 m/s in 10s. The magnitude of the net force accelerating t(ognv *+ ij*+um/x *b1vn -xmafpjuo9 he car is:

  99.05: A tractor-trailer trumvfma-7 rwp+pt *97qrck is traveling down the road. The mass of the trailer is 4 times the mass 7p9*-7qf+ pmarr mv wtof the tractor. If the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following princ;1hmd 2gs0p68vcfq kyi6 p- deiples best explains why large tractor-trailer trucks generally accelerate much e-kc6p;gihy pmdf0vsd86 1q2 more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a 2 kilogram056 ukl hsvweh.vv+ l6 ball, giving the6khh+ 6.svl0 w5vlu ve ball a velocity of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface of the earth with a weight o64;ceizg w 7z27/ neir bu9zjwefd 8a/6qv;ltf 100 newtons is accelerateiztrge awfw4e dz n 69qu7 z/jc6/;72le;bvi 8d 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 rest by a consta5x90 xrzifo)uvw w-k;nt force 9wzxf5u) xw;v-i0okr of 2400 N. What is the speed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initi -g:ygluu bp4ayexunt.oo/44 agi-0+ al speed 4.0 m/s slides across a rough horizontal floor before coming to rest. The frictional y.n4 i4y0 o:ola+4/pe gtgu-u-bxgu a 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 yj/cj *(e7,1ir3 voniv igc/w 9pil3kvelocity 4.0 m/s slides 8.0 m across a rough horizontal floor befor/3 vc(cywi7/1i 3 p*k9ve l,njjirioge coming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal sur .sflv/j0 k o)2io6wjlsg ,,tvface while a person pushes directly to the right on the box with a force of 60N. The coefficient of kinetic friction between the box and the suk/g t, .lj,vfw62) voojsi0slrface 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 3;m;ua3 x*rp7.hv,k0q slgvx j da)mirest 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 the blo0mv;xdk7gj* ;33q,amx suahr pvl i). ck?

  00.21: A car of mass m slides across a patch of ice at a speem8+rqasys.)xrf c (lo8):kofd 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 dryr)qsc l:oox(f kay )8sf+8rm. 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 speed v bgh4:2c*o mqlxnfm91 ml 4z7vwith its brakes locked. It then hits dry pavement and skids to a stop in a distancen421:9bghxml4fm vlzc7 qo*m d. The coefficient 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 sl h:9pd7jbx d3/a1ek :itrl)aw amming on the car's brakes and skidding :7tjxi1 3 eapr)d bd9kh:wa/l 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 ybeu8-si0 8 dp2dmo(k the following devices. Which of these devices can cause an accelked d y(bui 0ops82m8-eration in a moving car?
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net force on a rockee4-incq/s w(*f9kpf 1gxzjt s:y7 y*et with a weight of 15000 newtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36yqwtys 7-:( /feznp s ce94jfk*ixg* 1 m/s near the surface of the Earth at takeoff?

  07.21: A box slides to the right across a horizontal flovq. 4bjlqmeud 8:71qi7 c;moaor. 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, wh7 :m8;4i .7u mbvqoqq 1aecjldich 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 roller coaster tracks of equal lengthz . tl/d9y pt5a7)xfpouzz0rd;17ig i. Assume that on all tracks the roller coaster51dut/o097zytf7xp zzi.a; rpl i gd) 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 equaf t,3ra ids.v8l length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and movefd3s8ti . var,s 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 cartrollnevsn0 j1m5j7 2 zkv;rs frictionlessly along the curved track from poe 1jn7nkr;z 0j52v smvint 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 sn; v 9 g8wlv;,94mevuicn 3opx us(c.dragged across the floor 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 .9 ,8nsseu;x vwcg mic3vl( n4p; ov9ubetween 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 initiallk87wil fis o73y 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 ow83 o7iksfil7 f the friction acting on the block after a time of 1 second?

  05.10: A homeowner pushes a lawn mowei8cpggpcy7aw6 *;km +r 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 relations among the various force magnitudes, Wa76;gyi*c kpp cgwm+8, f, N, P is CORRECT?

  06.14: A book leans against a crate on a table. Neither is mov ai ))cmhuo 32igna3n6ing. Which of the following statements concerning this situation is CORRi6m oia nu3) )ahn3cg2ECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is p *hh:xase43 5bu(giktulled up a hill with an increasing speed. The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase inu(b34ix*etah k hs5 g: speedup the hill?