99.36: What happens to the inertia of an object wajoox 0uh c1+-hen its velocity is doubled?

  02.14: An intrinsic property of matter isiij 4 hd 8d1 irh(a;9it+h fwof7(2qxh one that does not depend on the quantity of matter present. Which of the followin12h9th ixa h+ji 4do;q(whrdf(8fi7i g properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the gfc yq8;ut2t x:b98yb Earth. Assume the Earth has m t9ygx8t:8 b2cfuyq ;bass $5.98 \times 10^{24} \; kg$ 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 pa )kkvw 386kwfree fall near the surface of the Earth. What is the magnitude of the gravitational force acting on the earth by the sphere? The Earth mass i)k6 wwkp8 ka3vs $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible forso 7icyfdfy43phy-) /au 57 at an object’s velocity to increase while its acceleration decreasesfpi-y53a7o tufa/sdyhc 47y)?

  00.11: A certain particle undergoes ebo*c6xc d +fv9rz/m8krratic motion. At every point in its motion,c +xzkvbo/8 9cd*r fm6 the direction of the particle’s momentum is ALWAYS

  17.14: A block is su9os0po+ cn;p a e*u:sm r:gx,bspended 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 a short time. During this time, which one of the following choices correctly identifies the Neocsougpr: s b9,mp:0;anxe+ * wton’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 zer 8h ) jk gtzh0bxat;m4pyn(di(aru: 12o on the objec(t gp4y 8mu0)1:rx(tzhbih; 2knadjat?

  13.28: An object is in free fall cloi 191oumu6hmnse 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 magnitude of the object’s acceleration is a and the magnitude of the acceleration from gravity ii 6o1n1hum9 ums g.

  98.03: An object in equilibrium has three forces, F1 of 30 N, F2 ofldog( skbc23,b zsh6 hnj)cx1py9n 25/ :lflc 50 N, and F3 of 70 N, acting on it. The magnitude of t6l l hn)jnd,f(2bs/b 9 gy 5xpkcloh21zc3sc:he resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can be combine to h8- 1g,q twywyform a resulta8g1 -h qywwty,nt with a magnitude of which of the following

  10.06: Which of the following statemew 4wid)l,bt(m nts is most closely associated with Newton’s Third Law of Motio4 l tw)(,wdibmn?

  95.06: The reaction force does not +h j+x6o-)2wx yyppp ycancel the action force because:

  14.14: A box rests on the floor of an elevator. The elevator is accepo 3yzaa c,85vx i/+ialerating upward. Which one of the following choices best represents to/x3,+a 8aia5yz pvi che Newton’s Third Law pair force to the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls doc*o,ngv+oh q .wnward through the air with constant speed. Which one of the followinvo,q+c* gn .hog choices correctly 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 *r+. jn, fo-)bnvqeb aof 35 m/s. The batterswingb.f* ve,rb )-j +qnnoas and hits the ball. The magnitude 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 of tz6 ho8m cu4*nwhe book is a calculator, also at rest. Which one of the f ucwm *on46z8hollowing 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 e5a yi8q.tp2eb 62j f8y:hnu kkxperiment related to Newton's Second Law. The collected data were displayed on the graph at the right. From this graph, what conc2yn5.6 f 8kyatpe h:ubik2qj8lusions can the students make?

  99.03: If the net force on an object were doubled while at the same time the m4t0slig:j wtfn8hh8z, nv,v * ass of the object was halved,then the accel*ivhs4h ntz ,fjv: n880wt,gleration of the object is

  96.15: A car whose mass is2xk) cg0+zzwdhco89t 1500 kg is accelerated uniformly from rest to a speed of 20 m/s in 10s. Thdg tz9cx8 +zw)coh0 2ke magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass of the tn6 vvrx.(j b.prailer is 4 times the mass of the tractor. If the tractorbjvp.(v x 6r.n accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explains why large9i07 6omqtn tq tractor-trailer trucks generally accelerate much more slowly that0q7 9t6t iqnmo automobiles?

  99.19: A 50 kilogram skater at rest on am +5gimkz 9n6j frictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which stan5 gz+j9k m6mitement describes the subsequent motion?

  00.13: An object near the surface of the eart.0(b/evaeo+s, omi ; 3yvnsn rh with a weight of 100 newtons is accele.v y nia,bs e svoe/r3;no(m+0rated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 dcb bz67 imy,2v5zgp (kg is accelerated from rest by a constant force ,7 y5zd(26zbgpcvm ib of 2400 N. What is the speed 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 +t)seg+2+yr1 yq g9abnhue sjc-5b7qgly- 5mrough horizontal floor before coming tos25 tum -b7l g eq5hgr9g+1cas+ q +byeyn-yj) rest. 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 wvv+w,.g b, u)bkbf8y rough horizontal floor beforefkbwv+.v y8 ),w ,ugbb coming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizonqohwyz1n ,-g+8 bia7h0w 4aii tal surface while a person pushes directly to the right on the box with a force of 60N. The coefficient of kinetic friction bwb-0 ni7qgah,iy48iz1+ ha owetween 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 tfh:4 z8huvnpjnxp3d 4s,6(e do rest on a horizontal surfaf,6hn3 hez8d udxjs44 pp vn(:ce. 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?

  00.21: A car of mass m slio5c+g-/m0, 1mvqt+zf 9jrabxh 7 nu fudes across a patch of ice at a speed v with its brakes locked. It5mc, qbha+190 m xrj+fuozvf u7 /n-gt then 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 mass of 2m, it would have skidded a distance of

  00.22: A car of mass m slides across a patch of ic). t-6fu+xrj kuymcsxq mr/+8e 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 jr8 ux tqmy mu/6-ksr.+c+)fxthe 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 abswu9yz 1c+ 62+ tr,atjk2vga car makes an emergency stop by slamming on the car's brakes and skidding to a stop. How far would the car hz w6gvcbs 9 au1y+r2a ktj2t,+ave skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully control eacd ;w u-4sq/n cyk bic.7qgly8+h of the following devices. Which of these ;ygi7 4 -nq.cclk/sdq ywb+ u8devices 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 zlabc t.+lj4zf0)tntf:m8y+rocket 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 Earth at takeo.)f +ljyb+8 azn mt40fc tzt:lff?

  07.21: A box slides to the right across a horn,20xh lir ly+izontal 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 frictionxr02h l,iyln+ 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 coastebo rew u.c8p+ 9 0i/tz3p(nagfr tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionpi(n+z 9w.p0 r3 agco/eb8ftulessly 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 rol4vocjq5tu 85r6hn jms:r 7zz8ler coaster tracks of equal length. Assume that on all tracks the rolle5s6j r7uv8c5 zorzhtm 8qj4:nr 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 k5):ft )texss,49eaagek 8 glfrictionlessly 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 point58)e4tts sa:e, g)lxfkkeag9

  02.40: A box with a mass of 50 kg is dragged across the t8zcll h/ex 1/x /gi1lfloor 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 between the box and the floor if a 250 newton force on the rope is required to move the crate at a contel1 i/1 h/ z8lx/xgclstant speed of 20 m/s as shown in the diagram?

  04.40: A 6.0 kg block initially at rest is puse+.dgdwit r/uztsu-.t5h8. 2n 4zvmyhed against a wall by a 100 N force a r8u.t4t/t vms2uzge d +y.hnwd-z5. is shown. 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 acqx ,uyvnn pk:ec,x8*8: zj, q nbj2wp-ross 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 forc:2,qc nykzpu*j8x wnx v8b, j: qpn-,ees 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 mov ey e7:np)rax8ing. Which of the following statements concerning this 7ex r)n8e:pa ysituation is CORRECT?

  06.15: A crate of toys remainsf6+mhc) ak 0h2ekxt:u 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. x:0 fk thmckh6 aeu)2+What force is responsible for the crate’s increase in speedup the hill?