99.36: What happens to the in2qea7.ux5vdr7fdfn , z h+h9 nertia of an object when its velocity is doubled?

  02.14: An intrinsic property of mamms0m2,2 moa j.c0b+ zac-lohtter is one that does not depend on the quantity of matter present. Which of the following properties is NOT an intrinsic property-cco sh. lomb020 a,z2mm+maj?

  04.16: A 20 kg boulder rests on the surface of tco my4 aptsf:q-9u)fk9d8y 7 yhe Earth. Assume the Earth has mass kf df9yy94cm: as-pt)y7 q8ou $5.98 \times 10^{24} \; kg$ 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 (m,0drp iz7 o6cm e/jn42emyrnear the surface of the Earth. What is the magnitude of the gravitational force acting on the earth by thrnz(pm2y/meij7m6 ,dorec 40e sphere? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to ari8h58kju4e9kw75x tj od :xincrease while its acceleration decreases d58wk78korej xa utj:i hx459?

  00.11: A certain particle undergoes errab-m/ l2. zptn.fdgt7 atic motion. At every point in its motion, the direction of the particle’s momentum is A. dmfp2bt.-gzt/ aln7 LWAYS

  17.14: A block is suspended in the air at the end of a string hel hi,/z.lu. hhdo,j g9;ycb *tkd by a person. The person pulls on the string uniformly accelerating the y,;hc lht /.hi 9o* bdz,kujg.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 situatinm:rmf j6;*aq ons is the net force constantly zero on the ob*;mf:nr qaj m6ject?

  13.28: An object is in free fall close to the ground. A person intervenes 8h zit8)*ywb qand slows the object uniformly )y8i * bzqt8hwto 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 is g.

  98.03: An object in equilibr(fm)seuf7g* :fzio5t ium has three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, actint) 7esf5f:i* (mf gozug 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 f) :oe; .olc uc*t,pp3unah;xc *zyna 3orm a reun u*l;oeat.;)p3z*3yah: copc,xcn sultant with a magnitude of which of the following

  10.06: Which of the following statements is most closee9 y2u6l1zbkzly associated with Newton’sbyez1 6lk2z9u Third Law of Motion?

  95.06: The reaction force does not cancel the action force bec2e) (zwp txltu7*-blvause:

  14.14: A box rests on the floor of (y08 z5av c(aosknk r9an 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 Ea(s(58ko9 yr k n0caavzrth?

  15.15: A skydiver falls dzgy;lv.bklqg64 3spi 18 fd th5jry.6p4vw l:ownward through the air with constant speed. Which one of the 1k.wl34; jr6 fh 6pbl4l vv.gyg5sq:ityz8 dpfollowing 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 spe qa0uet20fu2bg v0f404e nn kied of 35 m/s. The batterswings and hits the ball. 0n0e 0k ftuqb4u0v2e4 ga2if nThe 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 the bo f5f7c0jg v txl1wo94:dgde(rok is a calculator, also at rest. Which one vdg49l7t :r 15ofdjgwfexc0( 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 jg*3hg5sec * ;lm3nbrPhysics I 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 grc; n3h 35jmbg*ls *ethis graph, what conclusions can the students make?

  99.03: If the net force on an object were doubled while at the sa3jcyq3.z. : cht ;mhm:6uylcqme time the mass of the objeq.jm.m: cc :y cq36yth3ul;zhct was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly from rest to a spee9merm+)amexfg*: e +g n3-hogd of 20 m/s in 10s. The magnitude of the net ffarxg)me* mo-m++39 e :egn hgorce accelerating the car is:

  99.05: A tractor-trailer truck ix*u rh(7n:c yv1pb2o ibksw0qh4v .+x s traveling down the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force tha iq2bh*(bx 4 rys0 1vw:kvochpxn+7.u t the trailer applies on the tractor is

  99.16: Which of the following principles best explains why large tractor- ni1au)oxdv0+trailer xo1vnad+u)i0 trucks generally accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink 7 evykzwoz(wc6m ; l3xk6 9qx;throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement desc qx6 (;cw67;zw yv9lkz eomk3xribes the subsequent motion?

  00.13: An object near the surface of the earth with a we i;df ,eblic)6ight of 100 newtons is acceleratedb;)dfii 6,ec l 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 constann,ym: emjz +2ih m2u(zt force of 2400 N. What is the speed of the car 8.0 s after beginniz e( 2m ,jyn+uh:2mimzng?

  98.32: A 3.0-kg bloc1.z4zmmcbzlvc-0j 6u k with 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 block slide before coming to restb6jzvzl4 uc 1m-m c.0z?

  95.38: A block with initial velocity 4.0 m/s slides 8.0 m across a rough horicy0qkyfnk3)5 u2afwe -+ g5l bzontal floor before comingyguefwkal y3c5 -+02)5bnkq f to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizonta f(i x:tuz;.nol surface while a person pushes directly to the right on the box with a force of 60N. The coefficient of k z.f :(xnut;oiinetic 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/ ksz5rol.28+gs cwm o 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 them2 w cg 8rs.so+5lzok/ surface and the block?

  00.21: A car of mass m slides across a patch of ice at oyi3opo6- p26 jky;wca speed v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient wkyoi- 23oc op;pjy 66of 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 slidyc s .6qjmkr(-k6tuk)es across 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. k)t-u k skj(mc.6y r6qThe 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 slamming rrdx1;e905mh dkrq t*3vug *e on the car's brakes and skidding to a stop. How far would the car have skidx0rr mru 1g*e*3thvq5d;9k e dded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully control ea1su yf8 bspl13 (hooi85 mvoq(ch of the following devices. Which of these devices can cause an acceleration in a p8ho o 8s3sml5(o(bu vyfqi 11moving car?
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net force on a rocket withu(4oca *z7hj(wqoam4 m;5vvt 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 takeoff?awv(* o ozum4(v5q7ahcm j4;t

  07.21: A box slides to the right acro7o ydk09xd /wass a horizontal floor. A person called Ted exerts a force T to the right on the box. A person called Mardkw 79dx0o/yaio 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 coaster txod:t bcrw (80bq.0qvti+ fb,racks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and m. iqb:, wqbdox+cb (rtv8 00ftoves 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 (zfz-f6n,l akof equal length. Assume that on all tracks the roller cofl( n,a-zz6f kaster 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 rollercoast x +*:3d: dbqoqv+yymzer cartrolls frictionlessly along the curved track from point A to point C under the influence of gravity. What would be the direction of +qo3vd+:xdmqbyz:*y the cart's acceleration at point

  02.40: A box with a mass of 50 kg is p; fsqfsgr, g2:/r3wb 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 gb pwgs3f ;r:,rs2 /fqof 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 a*ls 9(gc5(k (drbhf+n8f: hke ogvi.xgainst a wall by a 100 N force as shown. Thek( ferc5v((9hki: .hn* sbxgog+ d8flcoefficient 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 pue;0fz5q9shefo0 gt ;blq ;s9b shes a lawn mower across a horizontal patch of grass with a constant speed by applying a force P. The arrows in the diagram correctly indicate the f o;qb05hf qs9bg9;e0se ;lztdirections 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. Neither is mou hzh;ok99et7ving. Which of the following statements concer ;9keh9uht7o zning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as erejz 2h:y:(othe sleigh is pulled up a hill with an increasing speed. The crate is not fastened down to the sleigh. What force is responsible for the crate’e (re:2hz :oyjs increase in speedup the hill?