99.36: What happens to the inertia of an object when6erib1k waff6:wm 7 /m its velocity is doubled?

  02.14: An intrinsic propefao9e/8j p.ewi8w4 1 ,zvir0)jrsvghrty of matter is one that does not depend on the quantity of matter present. Which of the following properties is NOT an intrinsic propertyoigjfeij 1r z e4ph8,)v/w0 srv.aw89 ?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume the Earth hasn0 yqn:q9cc:w massy ccw ::0nqnq9 $5.98 \times 10^{24} \; kg$ 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 thel 3;9koyp 0cs(ak(zqo Earth. What is the magnitude of the gravitational force acting on the eart0(a 9qksl3 (ko;zoycp h by the sphere? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velzyke vyxc)w8/ uf1) 3jocity to increase while its acceleration decreaskcjxy3 )ze1/8f wuv)yes?

  00.11: A certain particle undergoes erratic mcsp:v/uv ur44x5+ tp wotion. At every point in its motion, the directiopu4rwu/ x5c:p vt+ vs4n of the particle’s momentum is ALWAYS

  17.14: A block is suspended in ti x ihwd73:w7;on- pmvf q;q5ohe air at the end of a string held by a person. The person pulls on the strf;:7q opwv;n3hw x-5oqii d7ming 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 block?

  07.18: In which one of the following situations is the nc( w4 p q:v4:xqcu dyf50f;p p3yfzbc7et force constantly zero on the o;cvw443cxpqfyf7 yq :f0 pb:c5p zdu(bject?

  13.28: An object is in free fall close to the ground. A perq(1 q 2eir.cxvson 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 thiq1e2 c.(vxrq e 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 30 N, F2 of 50 N, and F1ajw9cv) a.mc2sp9dsnq87 yn3 of 70 N, acting on it. The magnitude of the resultant ofF1 and 9)c2 jn8dsa7.qswpan 9vmc1 yF2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can be 5c1,dn0dk 5 slt-l6t hvmwcwslo/t/+ combine to form a resultant with a magnitude of wh-o+l 0twlcnt65vkh/5d s / mtd1l sc,wich of the following

  10.06: Which of the following statements iszc6 z7yt7op d, most closely associated with Newton’s Third Law of M7ztocd zp 6,y7otion?

  95.06: The reaction force does not cancel the action ;osb8 ovo/.a ((hgxoaforce because:

  14.14: A box rests on the floor of an elevah9qavkma37hf 0k64tvt a k(g e4ii1l,tor. 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 tahk ikg9v401a3tvtkq(a f ,lhm76ie 4he box by the Earth?

  15.15: A skydiver falls downward through the air with constant speed. o1wd4 qi38fa0iaxp, rqm*koag- v/d7 Which one of the following choice io/0v 1o8m7rqid*q fw aagda4pk3,-x s 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 spub :ljk (fzq3,zpi2 n9eed of 35 m/s. The batterswings and hits the ball. The magnitude of the forc,qk(2nzfuj 9lzbp:3 ie that the ball exerts on the bat is always

  11.13: A physics book sixt ql*c 2e.fe3o o /usm.6*wexts at rest on a table. On top of the book is a calculator, also at rest. Which one of the following choices is the Newton’s Third Law pair force to thef3x* 6otws.2q/x mc.eo eue*l force that the table exerts on the book?

  05.06: The students in a Physics I class were in lab(2qa aq 1w.zpa;zy)gi conducting an experiment related to Newton's Second Law. The collected data were displayed on the graph at the right. From this graph, what conclusions can the students 12qaap (wyia.g;qzz)make?

  99.03: If the net force on an object were douborh.r) /o *twzbht hm4fzu 657qx7s-eled while at the same time the mass of the object was halved,then the acceleratb7e5 r)4 rqm zfohz*o. hx6wts-t7/huion of the object is

  96.15: A car whose mass ietm,x n)/6le 6e7wubc l(pk a y;,x+jks 1500 kg is accelerated uniformly from rest to a speed of 20 m/s in 10s. The magy cpwk,tn bxje7/ ; 6e(ex)kla+6mul ,nitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. T,uz4k2d run.b7 q9 nmlhe mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the trailer applies on t rk2bn4 m.d79ulnzq,u he tractor is

  99.16: Which of the folyvnwd19h u km40z a*8llowing principles best explains why large tractor-trailer trucks generally accelerate much mor4al0 v9u18*wzn hmykd e slowly that automobiles?

  99.19: A 50 kilogram skater at rest on at-mgvi e )xh78 frictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement desc8g7t e vxi)hm-ribes the subsequent motion?

  00.13: An object near the surfacqwcen:,vo l n aeq-k;;m(5 s*ue of the earth with a weight of 100 newtons is a k:emec-nq* na lusvwq,5(o;;ccelerated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mas.p2:iy. ;asif 1eg,tae)g + zywwcin0s is 1200 kg is accelerated from rest by a constant force of 2400 N. Wtagzi0ny1yg;2.ecw ips .a) wf:, i +ehat is the speed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with ini1qb / s8r-efuctial speed 4.0 m/s slides across a rough horizontal floor before comincb /ques1rf-8g to 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 velj8u7ul01qt4q 7qow f docity 4.0 m/s slides 8.0 m across a rough horizontal floor before como ljqw q74817u0tfudq ing to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal subt)c g.8 f,hryrface while a person pushes directly to the right on the box with a force of 60N. The coefficient of kinetic friction between the box a fb .g)8t,rychnd 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 6q2 4k,7ci u uxslrai h:4nn7g8 m/s accelerates uniformly to rest on a horizontal surface. The block travels a distance of 12.0 m during the slide.u k2 7 n,74aci 4g6xisrlnq:uh 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 slides aclh j9te8/q9pb8 (y1xv7m 9xqrnh +pzuross 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 betweerl989hqt v+up 7jmz p891hbex(nyx/ q n 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 with its x 6mie(ixrcfra- y( 8(brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic fr86i xy ((emcfr- ixa(riction 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 lo1)cgps4j24g1b,g a crcrk; makes an emergency stop by slamming on the car's brakes and skidding to a stop. How far would the car have skidded if itrpjcl42 1 gggb)c4oks,a;1cr had been traveling twice as fast?

  99.39: The driver of an automobile must care be73sc5s cm* 3k0xc.f1lsdx ifully control each of the following devices. c x cd1mfk5e.lx3sc*30b s7isWhich of these devices 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 rocket with a weight47yfpno)c3 ,td:s pzw of 15000 newtons is 24000 newtons. About how much time is needed to incr4p) cfzytd3p no,w7s :ease 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 rdim8(c y2o tc.ight across a horizontal 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 friction f and the box accelerates to the right, rank the sizes of these three forces exerted on odc c8 i2my.(tthe box.

  02.27: The diagram below shows three roller cbn w:cmgcz)v9qodlf:a; 7 1;yoaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest atw v: a)g9yfnqm c7ld;:1cobz; 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 shows three roller coaster tracks of equal l0tif3fbar(g0- aj r. zength. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves fricti3jfr(f0 a-.t b0az rgionlessly 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 frictionlessl6v2cku+,n /gjn tos8vy along the curved track from point A to point C under tocvk2/+sv8jtng 6n,u he influence of gravity. What would be the direction of the cart's acceleration at point

  02.40: A box with a mass of 50 kg is dragged acrc9b o ,lqv;yba0,;pn 7(xmbtssn b6 :hoss 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 ho nnb,:m l7y,bsp;tqcv6as(;bb9 0x in the diagram?

  04.40: A 6.0 kg block initially fay.f3wr od,k.ywo* .or;n x 2at rest is pushed against a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coefficinkor2.y a ;* owfrwf.dy3 xo.,ent 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 across a horizontal patc/s a8a p1bfy9+ldzxy0h 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 forces on the lawn mower. Which of the following relations among the various f b 8a/xpfl+a9yzdy 1s0orce magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crate on a table. 33h3o4z .hnvnmd-xc d(fzzd , Neither is moving. Which of the following statements concernihofn.(, z3d34zh- xcdzdm 3nv ng this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as lza:z5 +witr9 nzm3:, bshg *ethe sleigh is pulled up a hill with an increasing speed.z+s: e:rlin3z9zg,hat*w m 5b The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?