99.36: What happens to the inertia of an object wvrlycl,v(51dm9d1 bkq-v sv-v:pa -m hen its velocity is doubled?

  02.14: An intrinsic ku ;- vca8:9nc4sor0ftz,usu property of matter is one that does not depend on the quantity of matter present cau -f,nu:9k s 8;svor04uctz. Which of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of mw x8/h: cf:6/jxcn5 to-qybo 02p ztkthe Earth. Assume the Earth has m5-ytcpn2 h80mco xzf xjt 6b::okw//qass $5.98 \times 10^{24} \; kg$ 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 freez vmm*dr41gmsx+ )gpd,x xjt3k z)) s4eb0k/ y fall near the surface of the Earth. What is the magnitude of the gravitational force acting on the earth by the sphere? Tm d) r1bxzsxxmem s kkd3v +)y4gtp/zg,0j*)4 he Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to increase whi;/:f tai2 wriyhwf 78my:.kbc le its acceleration b2:kf ;wafihy.mr y:ti 8/wc7 decreases?

  00.11: A certain particle undergoes erratic motion. At every poi jaz,:gj6f9pn,8jjf rnt in its motion, the direction of the particle’s momentum is ALWAYSpnfgzjr69j 8jaj: f,,

  17.14: A block is suspended in thev3(d8d mppj xrz 3.sb- 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. bx .drvz-38 jmsp (p3d 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 fov e3r p9b6ajl-llowing situations is the net force constantly zero on the objecelj6 b3v a-p9rt?

  13.28: An object is in free fall clno ;.,jq+3wk be n h1ubu.em6wose 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 mao 3j6qmu. kw un+w .b1ehn;b,egnitude of the object’s acceleration is a and the magnitude of the acceleration from gravity is g.

  98.03: An object in equiliz9xa 7ls6,itl brium has three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, actin7la 9zt,l xi6sg 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 combine to fo ku661c dkzj)orm a resultant with ajk6d oz1c k6u) magnitude of which of the following

  10.06: Which of the following statements is me-8 a1h)tdophost closely associated with Newton’s Third La8 )otap1d-he hw of Motion?

  95.06: The reaction force does not cancel-sl36k)af,a 0k :x r9 pkjtbyf the action force because:

  14.14: A box rests on the floor of an elevati 7.wqqa;pqm 0or. The elevator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law p q i7amqw;0.qpair force to the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls downward 8u s1,uop-rd6w.qvkm through the air with constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air8o1pusr6k- wvmu.dq, resistance acting on the skydiver during the fall?

  06.08: A baseball is thrown by a pitcher with 3l/ukdbj ) (kb)hdlt+o dk* kdwq9+1e a speed of 35 m/s. The batterswings and hits the ball. The magnitude of the force that the ball exerts on b)jk1bkkl /oldtd k+ du3he*9 dqw+() the bat is always

  11.13: A physics book sits at rest ohfi n5 b9l96a+e4somcn a table. On top of the book is a calculator, also at rest. Which one of the following choices is the Newton’s Thir4mo9i 5acl9fsn+b6h ed Law pair force to the force that the table exerts on the book?

  05.06: The students in a Physics I class were insl w90r.vo6n n lab conducting an experiment related to Newton's Second Law. The collected data were d vl0wsn9o .nr6isplayed on the graph at the right. From this graph, what conclusions can the students make?

  99.03: If the net force on an o 88tff354vb eqs xa4djbject were doubled while at the same time the mass of the object was halved,then the acceleration of the bqxsfveadt843 5j84fobject is

  96.15: A car whose mass is 1500 kg is acceler d7 w j+1fqdyxhkqw;7k dc;g,2ated uniformly from rest to a speed of 20 m/s in 10swh g,q 7xqfk+2dydkwc1d j;;7. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is trav7n)qt 72cr8l2d gfqa c:qc u xuv6;wr,eling down the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the forcecdqvq:r2 q6nwg7a tcr, ux8lc; f2u) 7 that the trailer applies on the tractor is

  99.16: Which of the following principles best explains g) dv0e2; (juwy pki2gwhy large tractor-trailer trucks generally accelerate much mov2pd jekg;2 uw)yig(0re slowly that automobiles?

  99.19: A 50 kilogram skater at restuphly.67ggsmm 3sf69 on a frictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which stategmlu66f yg .ss h97p3mment describes the subsequent motion?

  00.13: An object near the surfac-q(gicyive8). 2sgpm;nv 0zhe of the earth with a weight of 100 newtons is accelerateg)mizpe8si(y-2h vc0;n v. qgd 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 constant y wn+y;qjj) ug0j 8d0xforce of 2400 N. Wh0x g0)ynqwyjuj ;j8d+at is the speed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block witzvlqq c9h(w:zn gneb.;/7 rs*h initial speed 4.0 m/s slides across a rough horizontal floor before coming to rest. The frictional force acting on the block is 3.0 N. How far does the/v*9snc ;7zqzqwn . lb (:rehg block slide before coming to rest?

  95.38: A block with initial velocity 4.0 m/s slides 8.0 m across a rough hor) p8zob0b t9gjd;sqh4izontal floor before coming to rezb)st 0 b;hqoj4dp9g8st. The coefficient of friction is:

  09.21: A 20.0 kg box remains atqqcawu56 3m lxc+nhyn,8c5+e rest on a horizontal surface while a person pushes directly to the right on theccwl6xe5cu+3 8q nh5, nayq+m box with 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 accelerates uniformly to rest on a ak vsb:hfjmd, b.9(1c horizontal surface. The block smkdv.h:b(jf 1a9b, ctravels 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 acrn:qu 8 ( uwe2,llu*cwgoss 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 deqw w(82, uuug *cl:lnry 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 wj vbn(2 s;+un85s2r gdu v,blfith its brakes locked. It the2uvbb2r,s v 5;+f8snjl ugn(dn 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 .

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 s , :7kcxtbwx5blamming on the car's brakes and skidding to a stop. How far would xb wx :t,k7bc5the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully control each o,fz3 n b(bs9lof the following devices. Wb,sf (nlzbo 93hich of these 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 rockedegj 7 9 be-1s3nct3dpt 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 36 m/s near the surface of the-dcts3b3 9dpj1ne 7g e Earth at takeoff?

  07.21: A box slides to,-8l: k8ix khyi6lc ym the right 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 large as the force T. Given that there is i8kh: ky8y,ilxml6 -c 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 shon6,kjfb54n,;y5 lbx v bhs(wlws three roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts b ykhfn;45 ,bjl(n 6,b5wvsxlstart 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 coaster64bb q;w- (lx+ vh( w+isejbrt tracks of equal length. Assume that on all tracks th 4(l bt;x+-+bs ehvr6wj( ibqwe 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 curv1hj:s i2ghpsa, i f7ku8dx c/4/j0kpyed track from point A to point C under the influence of gravity. What wj1h0sx8pay igkk7d,i ufc24 s p/j/h: ould 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 by14 unjf ew58 fiv2*+amd0fnvm a rope which makes an angle of 300 with the horizontal. Which of the following would be close numn5e 8fafi2v1*+dfjm04 w vst 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 1iug)dizx 4awl .qoj7:j0hk f -04z3 jg00 N force as shojo- )w7 ji3zqdfkx :gu00i4 a z4.ljghwn. Thecoefficient of kinetic friction is 0.30 while the coefficient of static friction is 0.50. What is true of the friction acting on the block after a time of 1 second?

  05.10: A homeowner pushes a lawn mower across a horizontal patch of/(tql0m fnu7u+d sf5v grass with a constant speed by applying a force P. The arrows in the diagram correctly indicate the dvlms/ 5f7udt (+qunf 0irections 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. N+-fxh(lzhj ry: 3n -cxeither is moving. Which of the following sxj+xln h f 3(h-crz:-ytatements concerning this situation is CORRECT?

  06.15: A crate of toys remains acrwdb15z2oy(t0 t( ca t rest on a sleigh as the sleigh is pulled up a hill with an increasing speed. The crate is not fastened down to tydb(c0rztt ow(1 c 2a5he sleigh. What force is responsible for the crate’s increase in speedup the hill?