99.36: What happens to the inertia of an object whenzy2 udc9. s.lkw twh*, its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not depend on s -ahef 8mher7 -w;nv2the quantity of matter present. Which of the following propertiehew7;smrfn- hev2a8 -s is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assumec6fyp xi9v t25 the Earth has mav xcf y92pti65ss $5.98 \times 10^{24} \; kg$ 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 sun7 /s,d:* wbga0zihm8iasu 4 srface of the Earth. What is the magnitude of the gravitational force sihumi7 g8d 4/*z:0ns,wasa b 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 whi 1 79jpqiw**qg;pp8nkyl/i hbrxn33lle its acceleration decreases1lp wjln 8 b qy*p*;qxh/p9i rk7g3n3i?

  00.11: A certain particlec,o7p4 o,itgkzd /d :x undergoes erratic motion. At every point in its motion, the direction of the particle’s 4/ticg d : dxpo,ok7,zmomentum is ALWAYS

  17.14: A block is suspended in v(kc6wu/7yj 75ywga jthe 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. During this time, which one of the following choices correctly identifies the Newton’s Third Law pair force to the force of the 5a 7 c/ww7ujgj(vky y6string on the block?

  07.18: In which one of the following situationqc- giyt4**u nc2 an-is is the net force constantly zero on the ob2n u-c ycg*4a q-it*niject?

  13.28: An object is in free fall close to the ground. A perw, ggh:mnbqq2 0n 5ry,g89v soson 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 be,hyo gq5g:s b8gn2w,rn0v qm9ing 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 equilibrium has three force xyq7*qsmlvf ;5bg 08ls, F1 of 30 N, F2 of 50 N, and F3 of 70 N, actix*gls8 y; qv5mq7 0blfng 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 combinr):i5o .i7 igff eude+e to form a resultant with .irf:i idfe7ou+ ge)5 a magnitude of which of the following

  10.06: Which of the following statements is most closely associated wit:f lu,hgo,(b fh Newton’s Third Law ofg(l:u,, ofh bf Motion?

  95.06: The reaction forceek8az :h 4cl)j7dqf 3m does not cancel the action force because:

  14.14: A box rests on the flo 1v 3d5ge2l8c6toepga or of an elevator. The elevator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational force acting on the box by the Egldecgo ae85612 tv3 parth?

  15.15: A skydiver fallsba:.t+hmo cctv 5evq 3.3v a:k downward through the air with constant speed. Which one of the following choices 5tqhav. :vvok abt .c:+ emc33correctly 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 with a speed of 35 m/s. The njz7tl 0*b;gh4dqk8gbatterswings and hits the ball. The magnitude of the force that the balkdb70g h*;tqg8zn4lj l exerts on the bat is always

  11.13: A physics book sits at rest on rjw7u ;*ykn* narwut b/7m(w7a table. On top of the book is a calculator, als yj7bwman7(k * r/uuw*trw7n;o at rest. Which one 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 were in lab conducting an e gn( i5m5ef(afxperiment related to Newton's Second Law. The collected data were displayed (55ffian( gmeon 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 tt jmvv;3kv dh2aq+: ;hhe same time the mass of the thvamk2qjv v: ;3hd+;object was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is acceo/iu sjf10jo6 lerated uniformly from rest to a speed of 20 m/s in 10s. The magnitude of the net force j0 js6/if1ou oaccelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass of the trail4rwk 7pb/.yc hdje- 8:*zgsjber is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the trailer applies on the tractoej 8bjrhbpdg 4z.ywc7s /- *k:r is

  99.16: Which of the following principles b 9ysbwnerq ,+)est explains why large tractor-trailer trucks generally accelerate much more slowly t bnrysq)e9,+w hat automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a 2 kilograzqz-gs2wz28*j xvg 7tnx 0*stm b-wjx8tv* s*qszzx0 2ztgg 2n 7all, giving the ball a velocity of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface x v/ /fq6z))hsj1 irciof the earth with a weight of 100 newtons is accf6h)1 /rzqc /v)sixij elerated 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 topquwcaxcr1(i,c xw;z,( 1-jm6gb 7 constant force of 2400 N. What is the speed of the car 8.0 s a ib;w 7q(x1mz6p(ro,,ucxt wj-gc c1after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a rough v2pj6+7nr/t3wfkh(l s5 geg dhorizontal floor before coming to rest. The frictijhsrp w6(f/ 75k 3ndtle+ gg2vonal 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 tgfu2im3t m85velocity 4.0 m/s slides 8.0 m across a rough horizontalgif mm8t t5u32 floor before coming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal sur rot1b/am; f4oface while a person pushes directly to the right on the box with a force of 60Naof4m/o br 1t;. 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 ra.ymbpb6 /82vammx)rswyi 75est on a horizontal surface. The block tr amb8s)rm.ma5y2 p6yx viw 7b/avels 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 across a patch of ice at a speed v with its 4ouol3 3(p kgybrakes locked. It then hits dry pavementklg4 o3y3o(up 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 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 with i9.kl4n/ nizn n2* gsa8wfekd-ts brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic friction between the2klzeng knf.9s 8 i/n4 na*w-d 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 c y6gdhaue837 tar makes an emergency stop by slamming on the car's brakes and skidding to a stop. How far would g 73y68uh aedtthe car have skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefuldg 2:g 7praksud gumc7f/ ;u2)ly control each of the following devices. Which of these devices can casm;gd ru/u 7f 2ua:7 2cdggpk)use 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 ro 4 hec5t)mxa7a5f.fpz cket 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 m75afhc5 4 exzp.f t)ma/s near the surface of the Earth at takeoff?

  07.21: A box slides to the right across a hor.g1,c +i+ft byh9 abazizontal 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 th,9+bf . aab+1zhtig yce 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 e racj:d fyaphogv,hf/22a(ftw)2v 85 qual length. Assume that on all trfpha d v2hr5 f:)fgy8 /(ta2vowc, ja2acks 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 be traveling the fastest at the finish?

  02.28: The diagram below shows three roller coaster tracks 2k0v/7vsm-qjbosks w5+ / 2tw sos7ywof equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly over the tracks to the finish v/sv0+kwokqs w/2s7b-s y2j7tw m5os.
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 fr/zd;zhr +xz.yg zo de3 v1dp)0ictionlessly along the curved track from point A to point C under the influence of gravity. What would be the direction of the cart's acceleration at poi)oh/ zrde 1.zp3z;dvgxdzy +0nt

  02.40: A box with a mass of 50 kg is dragged across the floog gmgxiv975g*r by a rope which makes an angle of 300 with the horizontal. Which of the following would g9vmx* g5 i7ggbe 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 initialli;6 8aed4ymnw1jnrt h)4d4)o 9 pnfy py at rest is pushed against a wall by a 100 N force as shown. Thecoefficient of kinetic frictionep djtd)41mn;ir ohy ) yf6pw8nn944 a 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 acron:9heowo: gdy0 jqw5*ss a horizontal patch of grass with a constant sqgwnoy h 950*:eo: jwdpeed 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, W, f, N, P is CORRECT?

  06.14: A book leans against / jflfy3r 4ki4a crate on a table. Neither is moving. Which of the following kirfy4 /jfl 34statements concerning this situation is CORRECT?

  06.15: A crate of toys remains at rest oqhkp* s8b+qx .n a sleigh as the sleigh is pulled up a hill with an increasing speed. The kp. q+s hqb*8xcrate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?