99.36: What happens to the inertia of an object when itsjmk)(,xo e,yj velocity is doubled?

  02.14: An intrinsic property of matter is one that does not depend on the qux jqgfl a/2o+j(f 32omantity of matter present. Which of the following properties is NOT an injgxjf2loq /a(+mo f32 trinsic property?

  04.16: A 20 kg boulder rest*;x b6xlwf)x.mi ,ayms on the surface of the Earth. Assume the Earth has mass ib ,mawyx*xxf.)ml6; $5.98 \times 10^{24} \; kg$ 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 Earth. Whad4-o( z,f3 j4kf : p6xtkf q7yusti.tet is the magnitude of the gravitational force acting on the earth by the sphere? The Earth zf4k4 tkfj376 eq ypi,(tt-.u:sfxo d mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to increase while itssbqd mvciwrk,14: p (zii8)pi)tbw32 acceleration d m (c2i8siqvtb,:k4r 3wzip1 w )pdi)becreases?

  00.11: A certain particle undergoes erratic motion. At e4zn os) xqcw no9:l4*every point in its motion, the o9nq*) 4:zx 4sn woceldirection of the particle’s momentum is ALWAYS

  17.14: A block is suspended u84 qm y)ajs qu0s9cr4w+ 8yajin 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 Newton’s Third Law pair force to the force of the string on the bloa8q9s+j4s0qj m4yu wuracy8) ck?

  07.18: In which one of the foll.v6 f exbyq ,sl5)fg+powing situations is the net force constantly zero on the obj)bl+f5 .xqey,fvsg6pect?

  13.28: An object is in free fall close to th 21zig .5vi g9,e xcm1+cree dv+ulf4te ground. A person intervenes and slows the object uniformly to rest. Which one of the following statements must be true about the magni4g1,u+cet2xc vmfieev15 r.+ zild9 gtude 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 equilibrium has three forces, F1 of 3ff- ew p,fev810 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitude of the resultant ofF1 and Fe-8 fepw,fv1f 2 is

  01.07: A force of 6 Newtgj -. nwz: yp.x3mcs7wons and a force of 10 newtons can be combine to form a resultant with a magnitude of which of the fols :73pyn gwjwx-. z.mclowing

  10.06: Which of the following sma/)l8,b1brf b+qok-dvr 3 hvtatements is most closely associated with Newton’s Third Lah8r +v)abf/rk3d1,olb bv-mqw of Motion?

  95.06: The reaction force do7d3guj;3czay i/ vxx* es not cancel the action force because:

  14.14: A box rests on the floor of an elevator. The elevator isc s rc*on5 xozv6i 08hjo+(q74(pazkt accelerating upward. Which one of the following choices best represents ti4 + s7nz oco(z (va5*txpor06qck8jhhe Newton’s Third Law pair force to the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls downward through the air with constajq* yv7ev9 .fgnt speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance acting on the skydiver duri y*.e9g7v fjqvng the fall?

  06.08: A baseball is thrown by a looz(z+z3xl4 pitcher with a speed of 35 m/s. The batterswings and hitszz+4xo(ol3l z 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 o 27ykqay cnx: *z7kys5f the book is a calculator, also at rest. Which one of the following choices is the Newton’s Third Law pair force to the force ty 7kxys2* yac:zk 7n5qhat the table exerts on the book?

  05.06: The students in a Physics Iacyy 5 ud; )knjseh.kr0u5: 2o class were in lab conducting an experiment related to Nekhdy 0k;u5sr)o2nya: 5ujc.ewton's Second Law. The collected data were displayed on 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 the same ti -h.k:zrv)eppu )h 6bume the mass of the object was halved,then the acceleration of the objep)z6:v-. eru hup)hkbct is

  96.15: A car whose mass is 1500 kg is a 9lc iqbu gk2ga/,3f8mccelerated uniformly from rest to a speed of 20 m/s in 10s. The magni/2u3fa lmc,8qib g9 gktude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. Ttt/ p h6-g6lz f9gz9fiq.wn-ohe mass of the trailer is 4 times96 z pfwz/g9n.th-gf qol t6-i the mass of the tractor. If the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explains why largez p.b8jz h saxl.6uvx8 6g(8cx tractor-trailer trucks generally accelerate much more slowly zx .z .xhx86 b(j8vsplu6g 8cathat automobiles?

  99.19: A 50 kilogram skater at ri.km:iu c,g4 jkp* ut5w0(i ebest on a frictionless rink throws a 2 kilogram ball, givin*cmu ,b.gie5pii( jukk w 04:tg the ball a velocity of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface of the eartx c/g,:gsiqx, h with a weight of 100 newtons is accelerat,:,sxcg q xgi/ed at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is)un* yi68*tnct1nu n5xg;m g2idy j0 r accelerated from rest by a constant force of 2400 N. What is the speed m **ynctu108n6ixr u d;ngjt2)5inygof the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/sjo8swb 2*(tbzvk.u pm37/ ,yu j)6oyzkrr i9p slides across a rough horizontal floor before coming to rest. The frictional force az ()uo*tzw 3pkj7v 8yj9. b/y6krub2 sm,rpiocting 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 horiz rs/z lbaqgy11 3r 4npa2)9bnaontal floor before coming to rest. The coeffic sg4a 2q9 bnn1y3/az)p ra1lrbient of friction is:

  09.21: A 20.0 kg box remains mpbp9dgn z rx-1 il:rgv,7j7;ot+j*jat rest on a horizontal surface while a person pushes directly to the right on thnrbj7p 9;gr-jo:il+g 1xdz 7t,mv*jp e 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 du .j.h*tfptwvw7o ,-moving 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 th .tu. jwv7*dpoh f-,twe surface and the block?

  00.21: A car of mass m slides across nyfh8+ gi)*yf 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 a+hgfn )yyi* 8fnd 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 8fyavfq:/hk( a patch of ice at a speed v with its brakes locked. It then hits dry payqa k(:hf/8 vfvement 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 slamming on the car'svx/0ddg1(guwt g,b s2 brakes and skidding to a stop. How far would the car have skidded if it had been traveling twg/bg,(1 t dwuvx ds2g0ice as fast?

  99.39: The driver of an automobile must c-rinpp)6o5 a qarefully control each of the following devices. Which of these devices can cause an acceleration in a movingp r5 on6a-pqi) 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 24it5b wfruc *4f30wx fy1z-he4 000 newtons. About how much time is needed to incfhcuxry tf*e44z 5wwf-b 1i03rease the rocket ’ speed from 12 m/s to 36 m/s near the surface of the Earth at takeoff?

  07.21: A box slides to the right across a horizontal flb/,rhrtc :v u3qj r)3loor. 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 friction f and the box accelerates to the right,vtl: 3h3uj,qb/)rrc r rank the sizes of these three forces exerted on the box.

  02.27: The diagram below shows three roller coaster tracks of q:pyccnzyg6 zf0ayrq.q 71 ff1:nvb) (*a:s vequal length. Assume that on all tracks the roller coaster carts start from rest a0 yn)f z:pagvyy(n76.fq11zqb rfvsa:*cc q:t 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 ve4 ps xf.qjrusj0g4im+wta u;.g-)) shows three roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevatio 0eai+;gmgptfw su..xurj- q44)sj )v n 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 altd)d g h:eth07ong the curved track from point A to point C under the influence h7 tt e:)hd0gdof gravity. What would be the direction of the cart's acceleration at point

  02.40: A box with a massr 8)ruoh3 4fnf of 50 kg is 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 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 dia8r4uro) hnf3fgram?

  04.40: A 6.0 kg block initially at rest is pushedt rz h1pw,f5-r against a wall by a 100 N force as shown. Thecoefficient of kinetic fr,5pf w1ztrhr -iction 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 law/7cb 3zmzvhw)o s-dtgia*( np/s 1n s,n mower across 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 forcenih (,anms7*/ o 13vc/zwbgdp)ts- szs 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 cagyd3:qn j +izb8v-d 3rate on a table. Neither is moving. Which of the following statements concerning this situation is CORRbva3-zig 8 3d:nj+ dqyECT?

  06.15: A crate of toys remains at rest on a sleigh s1txwc5(q /.mp( *m7 nidcmbl as the sleigh is pulled up a hill with an increas1s*mc d/itq7(p(5clxmbnm w. ing speed. The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?