99.36: What happens to t xn )uxyz/y,7wii*heteo t7,;he inertia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one 5el s3kd( x8 +bmhsrz*that does not depend on the quantity of matter present. Which of the fob s hlszd3m8(e5*rk+xllowing properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of th,w tk(q 9z6mc-dmu8a pn*/cs de Earth. Assume the Earth has masmc/q9(muz6cdwp ,da*- tkn8ss $5.98 \times 10^{24} \; kg$ 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. What is thu -ehdz7*nkm. e magnitude of the gravitational force acting on the earth by the sphere? The Earth mass is e7d u*.z-mknh $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to increase wh 9.d m:1sg(avhc6bki nile its acceleration nachm6d:(iv1k b g.9 sdecreases?

  00.11: A certain particle undergoes erratic motion. At every point 0qbh9phh 8sah w8s2xxjo9b/- in its motion, the direction of thpq9 w0x89hb s2- hjhx/shboa8e particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string held by a persob w 2ykkciv1,9c /v/c(da;igd n. The person pulls on the string uniformly accelerat,/ dvi(cvwc 19di2;/kgk b acying 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 iuyge0 5;uh6fha1twjn ,y+0 knet force constantly zero on the objectn yhiea,;khg u0 f+u5y06wt1j?

  13.28: An object is in free fall close to the gro x csfxi9;qkw( d6f6j.yut3v:und. 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 stfxc3:du(fq iy. ;v6j 6 9xwkof the acceleration from gravity is g.

  98.03: An object in equilibrium has three forces, F1 of 30 N, F2 oo il)5azl88+2wh dzpmf 50 N, and F3 of 70 N, acting on it. +2mhzp d loi88 5)wlazThe magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 neprge3czvucz:f7 dx* q92-m *d wtons can be combine to form a resultant wi9x72 u pd3d**gr m:q-zzfvec cth a magnitude of which of the following

  10.06: Which of the following statements is most closely associated with rvl snp; aap4cv76 1x1Newton’s Third Law of Motio67sv1avl 1axpc;4p rn n?

  95.06: The reaction force j )md 7fybt(+ddoes not cancel the action force because:

  14.14: A box rests on the k)zh00x9(o u5wrpgotfloor of an elevator. The elevator is accelerating upward. Which one of the following choices best represents the Newton’s Third t5(x okh90uow)pg0z rLaw pair force to the gravitational force acting on the box by the Earth?

  15.15: A skydiver fafhvw 6 4ygxm4.lls downward through the air with constant speed. Which one of the fvf. 64g 4mhxywollowing 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 pitchermy wxv-p/r1idu69j3 1ml.x6rxo+o rc with a speed of 35 m/s. The batterswings and hits the ball. The magnitude of the forcv6 mxjwxmp/ 69xr3r dr.y+ 1o-ou1i lce that the ball exerts on the bat is always

  11.13: A physics book sits at rest on a table. On top of the b8ov qan9h7gk*su qw+1ook is a calculator, also at+ qh*nvouk17ws a98qg 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 conducik*5ogpi9-g ni 5ov9rting an experiment related to Newton's Second Law. The collected data were displayed on the graph at the right. *5n9oiikp9 5gg-ivroFrom this graph, what conclusions can the students make?

  99.03: If the net force 5 :gerrcu; t:oon an object were doubled while at the same time the mass of the object was halved,then the acceoute: ;g 5crr:leration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly frocdw: y*:.qp swm rest to a speed of 20 m/s in 10s. The magnitude of the net force accelerating t c:dp* wsw:.qyhe car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass of the trail(h27-mq6qsyq 0smsac ff t.k0er is 4 times the mass of the tractor. If the tractor accelera07m -tkf(sy 6acfqh.ms20 qsqtes forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explains why large tranaeh. npy qa2 b*,qyd+m-o9p :ctor-trailer trucks generally accelerate much more sepyn-.q:m*dhao a q9np ,by +2lowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a 2 ki4i;72;yc wwaisiaz) b logram ball, giving the ball a velocity of 10.0 m/s. Which statemewa2;)i;s4 cz iy7w aibnt describes the subsequent motion?

  00.13: An object near +fmwryb/vd,+0:a js j the surface of the earth with a weight of 100 newtons is acceleratrwvj/m:+f+ j0yas b ,ded 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 resth: 84gzj6, wjlkrzhj3 by a constant force of 2400 N. What is the speed of the carhzjrh:wj4gl3 z6k, 8 j 8.0 s after beginning?

  98.32: A 3.0-kg block wi3q q+rx7dx*x hth 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 xd 3q r+xh*7qxthe block slide before coming to rest?

  95.38: A block with initial velocity 4.0 m/s slides 8.0 m across a rough horizo9 ixg4y l)lvzjt0x9-bntal floor before coming to rest. The coeffic lt9xjy0)ig9 x lb-z4vient of friction is:

  09.21: A 20.0 kg box remains at rest on a hn0 y .qvu ;ds8qgko1+vorizontal surface while a person pushes directly to the right on the box with a force of 60o+01 qdy;k sgvu 8nvq.N. 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 accelaq7nddjoi7ir034 z n+erates uniformly to rest on a horizontal surface. The block travels a distance of 12.0 m during the slide. Which one inq nridj3 a7o+47z 0dof the following choices best represents the coefficient of kinetic friction between the surface and the block?

  00.21: A car of mass m slig(z83 vtm/pxh2dh2 jsdes across a patch of ice at a speed v with its brakes locked. It then hits dry pavemenh gvt x /hj(3p8zsm22dt 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 wilhlgh5hdqrph +)n m-pp783r:th its brakes locked. It then hits dry pavement and skidsg rh:-p hlq np5r)ml83h+7h pd 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 slammintc xgup, jau2 /01ykib;mm1e9g on the car's brakes and skidding to a stop. How far would the car have skidded if it had been traveling twice 1ajbtem19/m;,uy2i0xg k ucp as fast?

  99.39: The driver of an autom.hvc k6qo+p+jl8 e8 mxobile must carefully control each of the following devices. Which of these devicesoqk xmvje8h.cl+ 8+ p6 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 o87f6vr rjr+t bn a 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 j6 +r7rt8frb vtakeoff?

  07.21: A box slides to the right across a horizontal +,*td zdzicfd+c/:rsjkqz e ,5p4l q:floor. A person called Ted exerts a force T to the ri+tqezi4 /qfdl +ccr , 5pdzs*z, dk:j:ght 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 show:d+ qy4h oq;kbs three roller coaster tracks of 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 kq o+q :d4hby;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 trac+5 ,ft qag*wpy1ltqoi 976 skcks of 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. o,6 sf1+i7lwa5ctqq g tp*k9y
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 friction/tl(/drhu2 8gke/ kxqlessly along the curved track from point A to point C under the influence of gravity. What would be the direction of the c(gux/8d k //qkle2th rart's acceleration at point

  02.40: A box with a masgbwo)rw 3as2 ,s 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 2bs)w2ro,w g 3a50 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 az3/ts8h*b; xhyj36fa/ut hw u4q7a ksgainst 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 acting on the block after a time of4wh 36;k3 8u/th7xjs q ta*hzus fy/ba 1 second?

  05.10: A homeowner pushes a lawn mower across(ulh eieduq2kdl-8/u6 z. 9ok a horizontal patch of grass with a constant speed by applying a force P. The arrows in the diagram cor/lod u ezl9q6h.8-dku u2(iekrectly 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. Neither is moving. Whichtq gmh0qd ;6v/m4bh;(n jrcks;a+v a * of the following statements cajrv+/hq 4 n;tb s;;hmam*( qgdvk 60concerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as wg o zw0o(kiy /6ss8pxz/cp;q9.p1vithe sleigh is pulled up a hill with an increp0 os.w6z8 qi(y/g 19/vowskxpp z;i casing speed. The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?