99.36: What happens to the inertia of an object when its vel7koug(-+pm(e y*kswd ocity is doubled?

  02.14: An intrinsic poxn +a anfwjijq27v1p1;08:wt fvm 6nroperty of matter is one that does not depend on the quantity of matter present. Which of the following properties is NOT an intrinsnp1ta;a7:nf0 wmvq jn6 fxo1+28ivwj ic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Ass sy1a9ic;oed5ume the Earth has masso59s a1yce;di $5.98 \times 10^{24} \; kg$ 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 r 2)*n kez6f-iw xx *tz:ifgp0surface of the Earth. What is thep)fgi f20 i :n6r -kezxzx*wt* magnitude of the gravitational force acting on the earth by the sphere? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to in5a1r4 n+6ep pvdxb9th crease while its acceleration decreashn+pb546tp re 1vdx9aes?

  00.11: A certain particle undergoes erratic motion. At every point in i(tif,. el.e2k:ib .;irhbqxr ts motion, the direction of the particle’s momentum is.ebixfhk ,( eqb.t. rl:;2i ir ALWAYS

  17.14: A block is suspekz*1zq):h7iye3q sn snded in the air at the end of a string held by a person. The person pulls on the string uniformly acceleratin3kh1 7: zq) nzqys*eisg 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 net force conx -n)7y9ym-txzdh ti1stantly zero on ti-nt dx)9 h7y 1xyz-tmhe object?

  13.28: An object is in free fall blwsjak+-.t (ypo g/ ,close to the ground. 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 accea(j-,wtpbgo+s . kly/leration is a and the magnitude of the acceleration from gravity is g.

  98.03: An object in equilibl;s,s8n4wpim z6o *t us5i+ vdrium has three forces, F1 of 30 N, F2 of 50 N, and F34ipl+ z ;msduo,5*inwv6 ss8t of 70 N, acting 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 a bv9o3k j.p8lfresultant with a maj. 83bokv f9lpgnitude of which of the following

  10.06: Which of the follos)s: t-z9 jptjkbfw5: wing statements is most closely associated with Newton’s Third Law otsbs 5jk: z:f j)p-wt9f Motion?

  95.06: The reaction force does not cancel the actiof9rrhreq(0z.)brq l 4n force because:

  14.14: A box rests on the*-0we,kd1a fdkt)zgb floor of an elevator. The elevator is accelerating upward. Which one of the following choices best represents,0debfw1- tzdk )*gka the Newton’s Third Law pair force to the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls d /t 8(ab+x f+s8abhvjbownward through the air with constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance acting on thetf8+s(bav/ +xbbh a8 j skydiver during the fall?

  06.08: A baseball is thrown by a pitcher wifqhgd,d0 /v2)u; ezczmv6 g x/th a speed of 35 m/s. The batterswings and hits the ball. The magni ;6hxf 2u, evdd)mvg/qgz0c/ztude 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 calc6pp yrvf;e g7zv 472npulator, also at rest. Which one of the following choices is the Newton’s Third Lawz4;nv7gpy 2 pvefr6p7 pair force to the force that the table exerts on the book?

  05.06: The students in a Physics I class were in lab con4fogeufwf1 * 094o giovw ,lz r +6y*d6vbsmo:ducting an experiment related to Newton's Second Law. The collected data were displayed on the graph at the rightfovv0gzfruw* l6 odoeyfm *bo1w6 9,:4sg+ i4. From this graph, what conclusions can the students make?

  99.03: If the net force on an object were doubled while at the same time t v+ 0.gok gegh;9wbiy)he mass of the object was halved,then the acceleration ofvybeg.kg ghw; 9+o0i) the object is

  96.15: A car whose mass is 15j pq.3e m4/ezc00 kg is accelerated uniformly from rest to a speed of 20 m/s in 10s. Thecqj .mp z4e/e3 magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. /)+ko3h t cycuThe mass of the trailer is 4 times the ma t)3 ukcc+/yhoss 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 large tra 7mbccw;on0.ht+ gcmp ;f r0w3ctor-trailerr+3ct pn;mwc; wcb0.0 fg7moh trucks generally accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a 2 kil7h7s /.s5cqlu8xf ym w6tle x0j90jwqogram ball, giving the ball a velocity of 10.0 m/s. Which statement describeu f jhyw8 s7qxxl0w.sm 7c/9t le6j50qs the subsequent motion?

  00.13: An object near the surface of the earth with a/m )zuqt4kt:j1 0b ndy weight of 100 newtons is acceleraq j n)t0dmzb4 k:tuy/1ted 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 forcchym)i87z;y5e : xxrde of 2400 N. What is the speed of the car 8.0 s aft7hxey mdizr8 y5:xc); er beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a rougzvf du9j*t20bh horizontal floor before coming to rest. The frictional force acting on the blockb0z9dtu jf2*v is 3.0 N. How far does the block slide before coming to rest?

  95.38: A block with initial velocity 4-1-o1s,e p y qytcgll*.0 m/s slides 8.0 m across a rough horizontal floor befep ,1yqgl- tyl*cs1- oore coming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at restlfm:i/ 5h:xd4j: l n:ujorpl* on a horizontal surface while a person pushes directly to the right on the box with a force of 60N. The coefficient of kinetic fri:4iol rnxlh ::j*/l:5 djmupf ction 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 axtg:4,)rdcis6-g mey t 8 m/s accelerates uniformly to rest on a horizontal surface. T seg6c-,y4 r)dgxit :mhe 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 m slides across a patch of ice at a speed v with itgzcap5h.i( c 9s brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic friction between the tires and thhiz9 c5a(p.gce 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 afx7i51 .yzfkibp yh16 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 coefyy 17 fbhf6kp1iix.z 5ficient 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 mvq6;cl9m 9rmby slamming on the car's brakes and skiddinm qr9;cvml96mg to a stop. How far would the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully control eac:7ohx)moxmb 4h of the following devices. Which of these devices can cause an accelera4ohmxmx) bo7:tion in a moving car?
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net force on a6+tjy 6 ixlsgx; - l(8eltl3ho rocket with a weight of 15000 newtons is 24000 newtons. About how m+; tos llg3e66(yl x8l-hjitxuch 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 a,w j4 2mskcofy/a1y9m cross a horizontal floor. A person called Ted exerts a force T to the right on fo9k c1myy2ws/aj,4 m 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 shows three roller coaster tracks of equal lengl r q33yrgfg4zarr67y( fo)q5th. Assume that on all tracks the roller coaster carts st4oy3 z ffyg(g rr37r qaqrl56)art 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 bel5rm ob:y(qwku7su/tc( n 8 .;g+aszvuow shows 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 frictionlesra(y uzb;u qgc8 t(vm/ o:ks+ws u.57nsly 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 frict.oh8,zzxw; b74uwlspionlessly along the curved track from point A to point C under the influence of h. u o;z8l,swz7bwp4xgravity. What would be the direction of the cart's acceleration at point

  02.40: A box with a mzn8pbgjak -rp6s m6 )4ass 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 newtonr6 4 j6z8-gmkpb)ns pa 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 against a wall by a 100 N fowk7wq7j. myb et*vo3 7rce as shown. Thecoeffici kwybmqt7j3.o7 *we7vent 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 of 1 second?

  05.10: A homeowner pushes a lawn mower across a horizontal patch of grass wbs b3e8:ixq 15r)v(tw )kq(q + pvnrwfith a constant speed by applying a force P. The arrows in the 185s)3tv( r +bief:knvrqwb)wxpq(q 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. Which y*p(bndkcf:-vhu2q6g(;my m 82 lgrmof the following statements conce -*bmcnk; r g(umgydv:6(2m82f yhqlprning this situation is CORRECT?

  06.15: A crate of toys remains at rest on ;7c d/lw2:1 jj xiulgwa 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 r:i lx7g;/ulwc d2 jwj1esponsible for the crate’s increase in speedup the hill?