99.36: What happens to the inertiawjnw6g )bb: xqk* tvk g dxc66g9)2jmxpp()1j of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that dwnwgpw q16j; 7oes not depend on the quantity of matter present. Which of the following properties is NOT an intrinsi6nw 1 p;qw7jwgc property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume /*kzhv e u9hsxpa+8e+the Earth has mupz+e hxav/ h89* +kesass $5.98 \times 10^{24} \; kg$ 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 p ozm,/acpwmai 8a8e5i, l :0sis the magnitude of the gravitational force acting on the earth by th0w,5pa/zace a8 :i,spm i8l moe sphere? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possibl.,lahrf 3mb 6obhk5r6 e for an object’s velocity to increase while its acceleration decrearo,b h3k65b hm6fral.ses?

  00.11: A certain particle unx;(gbu ;c/zal dergoes erratic motion. At every point in its motion, the direction of the particleg;b/ ;zl(a cxu’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string held by a person.aw rmj9h/1 f/90kvag l The person pulls on the string uniformly accelerating the block upward for a short time. During this tia kvfl/mj0g1h9arw9/ me, 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 followingez/l l* gl-z/b 1,ecpk situations is the net force constantly zero on thek pcb-e,/ezlg /1*lzl object?

  13.28: An object is in free fall close to the ggw,cqi./ x.baround. 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 stoxca. .wiqbg/, pped 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 e*ls vr d.hb4a2quilibrium has three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The masr h4.d bvla2*gnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons ant+r*i j:zfw/(q 0 mw(e.tpg odd a force of 10 newtons can be combine to form a resultant with a magnitude of whiw(:i ./*rt 0mg q(+fwj tzpoedch of the following

  10.06: Which of the following statements is most closely as432,t3hi dcl c a*pwaksociated with Newton’s Thirdc wlk d3t32p4ac,ahi * Law of Motion?

  95.06: The reaction force does not cancel the action forceq5 *cpzjn: u.x because:

  14.14: A box rests on the floor of an elevator. The elevator is accelerg /6 b:8qy1bhg4xombtating upward. Which one of the following choices best repres oyt8x1bb:gh 6b4mq g/ents the Newton’s Third Law pair force to the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls downward throug.h nb3m:jv /nzh the air with constant speed. Which one of the foln.nmj3hz :vb /lowing 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 thmgg35qo:hi1p rown by a pitcher with a speed of 35 m/s. The batterswings and him h ogi:p5q13gts 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 of the book vq:hda ;.v*hiis a calculator, also at rest. Which one of the following choices is the Newton’s Third Law pair forcedi.v* qa:hv; h to the force that the table exerts on the book?

  05.06: The students in a Physics I class were in lab conducting an experimen5/z73) ph qgt udo7pjmt related to Newton's Second Law. The c7pp juhqd3zt m)g /o57ollected 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)n i)ku q*yp *l( tg(uv 1ji40qr2wkwr same time the mass of the object was halved,then the acceleration of t gl*u) i2k( y)tjp( r*w1nr4ukwvqi0q he object is

  96.15: A car whose mass is 1500 kg is accel ssiwo+8infth5b 38 l+erated uniformly from rest to a speed o8ti bwsno l+h+i5sf3 8f 20 m/s in 10s. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the tgx f;* d*uov6road. The mass of the trailer is 4od;t6*u* gf xv times 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 b u-xqvrb1(ch3est explains why large tractor-trailer trucks generally accelb 1(-3hxc vrquerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest oncx*6p8l3:lx.sft a tj a frictionless rink throws a 2 kilogram ball, ga8t*6:csft.jpx l 3l xiving the ball a velocity of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface of the earth with a weight of 100 l;n31 pnidp gq9-qtz1newtons is acce 11q3g p;z-dp9 nilntqlerated 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 constant tlqi8) :8pnj e1oss-orzm4u2 force of 2400 N. What is the speed of the car 8.0 s afters:s1e8rz42qti )o p ujno-l8 m beginning?

  98.32: A 3.0-kg block with i9m05cm 3y4ux, q cqq gsqmo9-fuesn 7;nitial 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 cc,q45 f sy- ; nq9 uqcq7umm93mgs0oxeoming to rest?

  95.38: A block with initial velocity 4.0662(u edp,e-m/hkej i (0vt yw1ejtnb m/s slides 8.0 m across a rough horizontal floor before coming to rest. The coefficient (wb y-p /teehue 1 d(26m6jve,n 0kijtof friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal survabo o c;xc 7dhx17*)eface while a person pushes directly to the right on the box with a force of 60N. The coeffic;ho7c x ob7vx d1)ea*cient 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 initiallygb-kk d9f/ shesk.: 5n 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 represent 5s:h/ksb.gfek -9dnks the coefficient of kinetic friction between the surface and the block?

  00.21: A car of mass m slides across a patch of ice at a speed v withldsu2*a9z 941affr 2r 2drb ox its brakes locked. It t fdbzrar29 *xd4ou 2ral1s29f hen hits dry pavement 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 spg4etq5f c;f gd0g 4+apeed 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 and the dry road is μt4af4cq0 e pgdfg g;5+ .

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 ssl ce8872xtvz u;z.p;goxe o;top by slamming on the car's brakes and skidding to a stop. How z.xp88;z ;gee7 lovux scto;2far would the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully control each of the following - uxttjtnzi8)xs02 1 ddevices. Which of these devices can cause an acceleration in a m nt8ud1t)x tx -2is0zjoving car?
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net force on a rocket yr/6 h xtzas2;with a weight of 15000 newtons is 24000 newtons. About how mucr6 2xz;h/as yth time is needed to increase 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 floor. A person called T,,ab q dmm;fl7rs.(o oed exerts a force T to the right on the box. A person called Mario exerts a force M to the left, w; rds.m(,q ma bof,l7ohich 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 tracks of equag)2 j4jdc (8dgdui5w dl length. Assume thatg5d2u d4 jgd c8()djwi on all tracks the roller coaster 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 be traveling the fastest at the finish?

  02.28: The diagram below shows three roller coaster tracks of equal lem)g2 cm+n5umength. Assume that on all tracks the roller coaster carts start from rest at theu + 2gmme5mnc) 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 rollercoaster cartrolls frictionlessly along the curved tracktvuauzamg,) ttj. g,ghunn:6+ -8 o1m from point A to point C under the influence of gravity. What would be the direction of the cart's acceleratig1:)a+ ntojauggu,zh t6n8mtv.m-,uon at point

  02.40: A box with a mass of 50 kg is dragged acrod6v6hlh2- sskpvq 7a*ss 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 ki-va*qdlh66s2h s p k7vnetic 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 initiallko3 ur 7-(dnajy at rest is pushed against 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 a(3urjan d7 -kofter a time of 1 second?

  05.10: A homeowner pushes a lawn mowereo2 kzry7g 4m3d 4f-ux across a horizontal patch of grass with a constant speed by applying a force P. The arrows in the diagram correctly indicate the directik dr7m2 z4g43ouxf-eyons 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. Which of thu hh.91+* ;h5 q pjn6dds-xen g y-qpxsq+q,cve following statements concerning this situation is CORRECpqdve*,qd+yqhxc-. s-xqn9j h6+ n5pu g 1sh;T?

  06.15: A crate of toys remains at rest on a sleigh as the sl.mrbt*lc9* m jv9.u wfrd00: wlc ww9eeigh 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 increascm .ltd*c ww 0vf:ej w99wumr*9l0rb.e in speedup the hill?