99.36: What happens to the inertia of an object when its velocity is doubled z, aq(:z-j3m n:n,ge8nmzn tf?

  02.14: An intrinsic property of matter is oned5qe0*fts-- umy) aqm that does not depend on the quantity of0ea--m5s*f yqtm ud q) matter present. Which of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the fo32 j,xtbb0r Earth. Assume the Earth has mass b30b fj,rtxo2$5.98 \times 10^{24} \; kg$ 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 qodrf; x*mgsgglqr +dri 5849 ue-1 ;hthe surface of the Earth. What is the magnitude of the gravitational force acting on the earth by the sphere59gsolm81gr xg+4;ru;d q r hiqe-d*f? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possiblsbf(/ kxp :+ ua7a-nsle for an object’s velocity to increase while its acceleration decrex a-abl( ufss:n+pk/7ases?

  00.11: A certain particle unfbf ll6 yghiuf5: 01b3dergoes erratic motion. At every point in its motion, the direction of the partic fgfb56: ublh13 fiyl0le’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string hel 4;/ ni7 7vbdgsnjrb0xyrn) d+z3li9n d 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 t09bi d 47r)lvn7 gdbyr+;x/jzin snn3he string on the block?

  07.18: In which one of the following situations is the net force constwsme59kdcn vrq(t il8r:0l + 5antly zero on the objtwnq0l98(r 5rcme5 l s+div:k ect?

  13.28: An object is in free fall close to the ground. A person int6p8sj9j 0f zwjcgh7e; ervenes 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 accee;sw8 j0p g6f9jz hj7cleration is a and the magnitude of the acceleration from gravity is g.

  98.03: An object in equilibrium has three forces, F1 of 30 N, F2 of 50 Npns 7x;c i980u+fr(qexr mq3o, and F3 of 70 N, p 8x+(rmf s;7xc03eo uq n9irqacting 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 form 905a b6nb:3nxv numboa resultant with a magnit 9uav bb03n6nbx: mno5ude of which of the following

  10.06: Which of the following statements is most inuj 9ywe1:t:ip6 (2a zd wcg0k9uya;closely associated with Newton’s Third Law of Motiondpkity:a6wjz a 29g:;1y(ie9 nwu c0u?

  95.06: The reaction force does not cancel the action fo0 whwxq88/c04fzsmu srce because:

  14.14: A box rests on the floor of an elevator. The elevator is accelerating 40:lqmw.0y ;,o7)dhhkcm9f he affu o upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational force actin, u;afqkh .edm0h lwhc49 7)f:0oyofmg on the box by the Earth?

  15.15: A skydiver falls downward through the air with const4 jfiwnh vo(e k-4s,:nant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance acting on the skydiver (v-fwi,4 h : nskjeon4during the fall?

  06.08: A baseball is thrown by a pitcher with a sper loh46, jnya,bl 1pe5/ s;ncy9trj-(r) gr oned of 35 m/s. The batterswings and hits the ball. The mag4/) jbrae,1oy c6;nl(lpy- 5 rho njr9tsnr,gnitude 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 book is a cak5ft0/c)cx0 /ih 9sl5 xkncr blculator, also at re clbf0k9sxt5c inkc/r5hx/ )0st. 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 experim i,pg.vxtk( .d v7xlibqdr ,ysn6(; k0ent related to Newton's Second Law. The collected data were displayed on the graph at the right. From this graph, what conclusions can ts.(d ;trqg,kx.ny kv6x,ldipv7b0 i(he students make?

  99.03: If the net force on an o tv37zg-oqw 4oycw9.gk*+oph bject were doubled while at the same time the mass of*zqoocw9g +4 tg3oy7p.hvk -w the object was halved,then the acceleration of the object is

  96.15: A car whose mass iwmhx-2 :, hcd.e bd+ths 1500 kg is accelerated uniformly from rest to a speed of 20 m/s in 10s. The magnitudehd mc.wh2,:t-xh ed +b of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traves,kf3 9b cub ,s6lh r5kjl8ax )333(frdvoyoxling down the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the forjlb3fskr,c d5 ly8rv3 (9 b6,xxa3)k3suh fooce that the trailer applies on the tractor is

  99.16: Which of the mb) 5er;a+ is)a3 xlakfollowing principles best explains why large tractor-trailerxmai ) 3kb+r5;)sae la trucks generally accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a 2 b6q,w50) dcz yyk.sscv;;(:kzn1duub4br y q kilogram ball, giving the ball a velocity of 10.0 m/s. Which statsbyy d,kzzv1b(.u6);54bqcw c0 nk:;qu yrs dement describes the subsequent motion?

  00.13: An object near the surface of the earth with a weight och(rn y0z 8f)bf 100 newtons is accelerated(b0znh )f8cy r at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mes dl *bt0hxexf eh+p(gi,c76u)..,o:rcmesass is 1200 kg is accelerated from rest by a constant force oex+b0, :x.litu segopmr d7 cce). (, *h6fsehf 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 rough horizonrp7xqn-t q.t wa/+a4gtal floor before coming to res.g7r4q-qapt / anx+wt t. 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 p 80znykjh i59el.n7v.0 m/s slides 8.0 m across a rough horizontal floor before0v8 k 5n9zh.ipe ljy7n coming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a 1:d+i vdo f iw y33b2fxtcz;u.horizontal surface while a person pushes directly to the right on the box with a force ob t y;oz 1vuc3 w.32ff:d+ixdif 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 moving at 8 m/s accelerates uniformly to rest on a g0g w+dops,5y horizontal surface. Th+0pds5wy gg o,e 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 gm th3v2vjm(u; *8m c7epf v1yt3z ie(m slides across a patch of ice at a speed v with its brakes locked. It then hits dry pht *ye(cztumjp83i 1fm(2e;3g mv7vvavement 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 sptg;l/xsoe (*i sq xkh+s+uc; sl* o/:leed v with its brakes locked. It then hits dry pavement and ski;+/gcsts ull+i(ksx* ex*osq:;h/o lds 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 wmzm kwoh3e qvr28) (1h;*zcf an emergency stop by slamming on the car's brakes and skidding to a stop. How far would the car have skidded if it had been traveling twice as fasofm 3e8wk hq2vhcw;) zr* m(1zt?

  99.39: The driver of an automobile must carefully control each of thx*r0xgfxxz ;/ e following devices. Which of these devices can cause an acceleration in a mo0xxx/*fx ;zrg ving 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 15001z rilg12 dd3v7b7llb0 newtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36 3lizb1vl7 1dgdr l7b2m/s near the surface of the Earth at takeoff?

  07.21: A box slides to the right across a horizontal floor. A person called Te+ch 3 idnfm+ddwm2h*ib;qp)5 d 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, rank the sizes mn*mbcd+) ;h pwfi2qhi3d5+ dof these three forces exerted on the box.

  02.27: The diagram below shows three roller coaster tracks of eq0,yyj 2sv+ iiwi a;og+ual length. Assume that on all tracks the roller coaster carts start from rest at the same elevatigys+a 2ii+, jwyoiv;0 on 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 of equal1h+1 gf3 wi-mmvp +k zounkt/4 length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlesslyvm kztofmuw4i3g+ 1np-k1+h/ 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 along the curved track b adyovqq:koo-1 -75 yfrom point A to point C under the influence of gravity. What would be the direction of the cart's acceleration yqvk:do-b-y 1oa o5q7at point

  02.40: A box with a mass of 50 kg is dragged across the j74zxc9r 0oypfloor 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 9 0x zr7p4ycojthe crate at a constant speed of 20 m/s as shown in the diagram?

  04.40: A 6.0 kg block initially at restug sa ;1c;vd+s. jx:ba is pushed against a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coefficienjgc:as;vux b1da; .+st 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 ffcmdu )q ccy*8 6tv;*)6ok4gjwjr5cn mower across a horizontal patch of grass with a constant tj66)j 54cmc*ccg8w*dq f yfr uv)o;kspeed 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 a crate on a table. Neither is moving. kys 4q l85p6rp gn0kx) /a9miaWhich of the following statements concerning this situati0)qp86 5amnp9ri4ay k l skx/gon is CORRECT?

  06.15: A crate of toymmjl9( buk1ak ;yb2,qvv6v.f s remains 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. What force is responsible for the crate’s u;a,mv6j 1lkbfvmbq yv(.9 2kincrease in speedup the hill?