99.36: What happens to the inertia of an object when its velo+whu+ju ( t6frcity is doubled?

  02.14: An intrinsic property of matter is one that does r9h rkxr b w4,s6*(iaa3yne:hnot depend on the quantity of matter present. Why: aw ar h3nkb*srrie6(h94,xich of the following properties is NOT an intrinsic property?

  04.16: A 20 kg bould3 +7ntgridz2ser rests on the surface of the Earth. Assume the Earth has massg+37zirnt sd 2 $5.98 \times 10^{24} \; kg$ 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 Ecaekfo*,zrv -l;( kbk: 6dj w)arth. What is the magnitude of the gravitatio o*)lv6(b:kzwjae- ; fk ,dckrnal force acting on the earth by the sphere? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to increase while itsg0 ,t5kuw5mng acceleration decreases?m,ukgw 55n 0tg

  00.11: A certain particle undergoes erratic motion. At every poink1b l5w c0kjjt/)q2ldt in its motion, the direction of the particle’s mobc/ ) ll1k jw5qt2j0dkmentum is ALWAYS

  17.14: A block is suspended in the air at the end of a e g,wv7x y4qe9string held by a person. The person pulls on the string uniformly accelevxe9 ywgq7,e4 rating the block 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 the net force constantly zerxhie.hg qg2 0yb scrn/y4c*i :l/9,j uo ug j iygchnxc/q.s, i20br:l9e4y/* hon the object?

  13.28: An object is in free fall close to the s2 b,x; g semxah ca1a4qpz;gkj+0q0( 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’j,axg 0ek asg 142m+ xq(h0;q;p czbass acceleration is a and the magnitude of the acceleration from gravity is g.

  98.03: An object in equilibrium has three;pl( pib6)d vc8fwra * forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitud cpvla w6di)(pbf;*r8e of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons an c544bhq)fe wwd a force of 10 newtons can be combine to form a resuwefhc 4b4w5 q)ltant with a magnitude of which of the following

  10.06: Which of the fo0m mzp.vgyvw/a.3k ,b llowing statements is most closely associated with Newton’s T,k.g./ wz0bmvv y3mpahird Law of Motion?

  95.06: The reaction force does not cancel the action force bec:dmw6g ubza08ause:

  14.14: A box rests on the floor of w 16 7y6t2 jseenymx:s0x n8yo;6aqfran elevator. The elevator is accelerating upward. Which one of the following choices bestmye026;7ryxjw6t sn a:ysnqo8 e1 fx6 represents the Newton’s Third Law pair force to the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls downwenl3.lj52j nkt:fy-tcl- ge1bc x8/ lard through the air with constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance acting on the skydiver during the2y1l3 j jcln e-elt n8:tg.xk5bf -lc/ fall?

  06.08: A baseball is thrown by a pitcher with a +wkys o082 wv 1awe o:ilspu4)speed of 35 m/s. The batterswings and hits the ball. The magnitude of the force that the ball wsl:)o sw wp8o0i+u214avyek exerts on the bat is always

  11.13: A physics book sits at rest on a table. On top o(6w*jizk.( jp . qvraqf the book is a calculator, also at rest. Which one of the follajvp(rqizw(jk. 6* .qowing 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 ve +eucb50dqc/dj;wb5*lk y)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 this graph, what conclusions can the students bw l*yd+5)bjcevqdek/u;50cmake?

  99.03: If the net force on an object were doubled while at the same time the 5v61iqk ue b45:g(b *jzv7l y.oumrfpmass of the object was halved,then the ac b*p.jber 7 vgqzv54fi6(k1 ol5uyu:mceleration of the object is

  96.15: A car whose mass is 1500 kg ish s:lpvs 4;: i d )j8o5ci1id4n5bthzyumww;1 accelerated uniformly from rest to a speed of 20 m/s in 10s. The magnitude of the net force acceleratini)di 5:1zduylc m;t4 bsho pw i4jv81;hw5ns:g the car is:

  99.05: A tractor-trailer truco bx/ugzb4eh/:h, o 3bk 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 tract bb43,/:ghbxh/ou zeo or is

  99.16: Which of the following principles best explains why large h8:u 2+sukr lptractor-trailer trucks generally accelerate much more slowly that automobiles? prl:k+h s8uu2

  99.19: A 50 kilogram skater at rest on a frictionless rin:e1)l( azrwe0c lv7p4plgw h ,k throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement describe cvg(pl40 a17 lz)phe:ww ,rles the subsequent motion?

  00.13: An object near the surface of the earth jtdgtxl* tz u/0t,b-6 ;zlr3uwith a weight of 100 newtons is acceu r l tz;xbdgttl-u0 ,*/3zjt6lerated 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 come rs 1x,h i p(d;kdy6tp2/m;- yzj8ny-xfs0nnstant force of 2400 N. What is the itd; dne s /0jmsk; ,( yxhr -pznymx82p16-fyspeed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a rough hj 5nv0t9s** j dey)zjjorizontal floor before coming to rest.)j*0 5nd*tjyvzj 9e js 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 4.0 m/s slides 8.0 m across a rough horizon /bjq15gz xrc6tal floor before coming to rest. The coefficient of friction is:1g5 jqbcxr6z /

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a person pus. 8 xrzt+:s lc0zq/ygghes directly to t g+r8zgs:c t.xy0qzl/he right on the 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 m t n),m2rgz5hwoving at 8 m/s accelerates 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 the block 5)rwm2,gntzh?

  00.21: A car of mass m slides a )x+yy9i1l5 n(irhq ukcross a patch of ice at a speed v with its brakes locked. It then hits dry pavement and skids to a stop in a distak 5h) n9r+uyl( i1iqxynced. The coefficient of kinetic 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 slides acros4q 4m,.8 bmszbb8bh mks 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 m 4 kz.4mbs,bhb8b8 mqkinetic 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 theb ai;eyx ,sui4:i;o3 e car's brakes a yx3u oib;: e,iaie4;snd 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 carefulpz.vm7.1tuyc4jg gc5;/x jjm z sd3; aly control each of the following devices. Which of these ujc cyjsmjt 35. .;px 4 7mz/zadg;vg1devices 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 newtons is 246a :7ab mzwmd(000 newtons. About how much time is needed to increase the rocket ’ speed from 12 m(76mm ba :dzwa/s to 36 m/s near the surface of the Earth at takeoff?

  07.21: A box slides to the right across a horizontal floor. A person callev/mn cly(4hc:d Ted exerts a force T to t(ly 4 nccv:hm/he 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 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 coaste,3*zvr)+h0ohceiy ff r tracks of equal length. Assume that on all tracks the roller coaster carts start from resy 0ho+f)czr eh,*v3fit 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 equ8nu,uzod -io:0 xdh k4al length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly overx:inzd- h,ou 8k4o 0ud 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 rollerol ek 3qz:e6yl*.tx:vcoaster cartrolls frictionlessly along the curved track from point A to point C under the influence of grav v l*oytz:ee 3:.q6xklity. What would be the direction of the cart's acceleration at point

  02.40: A box with a mass of 50 kg is dragged acrosslz9 )*w7vqiq9cv v9jzx8 zzg( 4*eg es the floor by a rope which makes an angle of 300 with the horizontal. Which of the following wo9v9gsw*xz q7z( 9vv l z4)eizc*eqg 8juld 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 ttlqx +;t0n8a 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 of the friction act8x;+ n ttatq0ling on the block after a time of 1 second?

  05.10: A homeowner pushes a lawn mower across o jo 2*,zre hwz03a)d0qmsit4a horizontal patch of grass with a constant speed by applyi4it *,ws q 0jze203ahmzr)o odng 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, W, f, N, P is CORRECT?

  06.14: A book leans against a crate on a table. u6i tfaz,j3qs c-b;hp. 4 rirtr+a22j Neither is moving. Which of the foll62rt42 - rsb+.uar;3,fphq aijjzc itowing statements concerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is pulled up4fenswq 8v)( l a hill with an increasing speed. The crate is not fastened down to the sleigh. What force is rv e48nw lq)(fsesponsible for the crate’s increase in speedup the hill?