99.36: What happens to the ine2rg q*p5nm td5s:+dxm,1zzf trtia of an object when its velocity is doubled?

  02.14: An intrinsic property otlip:jzdca 7ysb m; (-u(nbz54 * ,yphf matter is one that does not depend on the quantity of matter present. Which of the followzhcjm*iylp 54t(z sb;p7d -u(an by,:ing properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume the Earth hauo +2orz-c6 pms mass o2ucz -rmop+6 $5.98 \times 10^{24} \; kg$ 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 theckzakjt/b ys2 x/,* +d surface of the Earth. What is the magnitude of the gravitational force acting on the earth by the sphere? The Earth/+c/,sk a*kdb2zyx j t mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for 4z*7sx2dfm xy 8*pvo;i/mh 2c sc -pufan object’s velocity to increase while its acceleration de-;sy vfoc22z*f pi*m p7huxx4s8 cd/m creases?

  00.11: A certain particle undergoes erratic motion. At every point in its motionb*,l9pouqxt +p 3ugb(, the direction of the particl g, b p*bxl9o+3pq(uute’s momentum is ALWAYS

  17.14: A block is suspended in the air atb isy9r-v/0aiaw;yw5 (qr/th the end of a string held by a person. The person pulls on the string unifs0 rt95vb/rqy ha;i( iw-/yw aormly 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 followingis q;: 0lgj+a 7jy/kvup7txxo 13)hxe situations is the net force constantly zero on the object +xt hxk0 /iusoqjgy7j v1 x3p);le7:a?

  13.28: An object is in /ws3/r:rsbw n free fall 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 acsw:/n rs/b3wr celeration is a and the magnitude of the acceleration from gravity is g.

  98.03: An object in equilibrium has three forces, F3f 4lmtxmjff- s-e )1v1 of 30 N, F2 of 50 N, and F3 of 70e4s m1jv)xmf l-t-f f3 N, acting on it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a t 7cf8wbiw/aw6y3b p /ne3kf1force of 10 newtons can be combine to form a resultant with a magnitude of which of the foketw6ybp7 f13 /c3ww/f na8billowing

  10.06: Which of the following statements is most cgiue;ou7 n+j csonn s ar-: w,3l4n6h:losely associated with Newton’s Third Law u: +w jro n: ;3iga4slh6c un-,esnn7oof Motion?

  95.06: The reaction force does not cancel the action force beco z;osc5 a)ooh m+r22zbiv-f*ause:

  14.14: A box rests on the floor o+ k;p q76akr fsjy8ey:f an elevator. The elevator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational force q8f r6+yy;sk:akpe 7j acting on the box by the Earth?

  15.15: A skydiver falls downward through the air l71cwl ,t1xzh)t nqs1with constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to xtwtl1hnsc)z,l171 q the air resistance acting on the skydiver during the fall?

  06.08: A baseball is thrown by a pitcher with a speed ofkq6 ivnbjl . + hq6hi:h ve(k3gt*:hn0 35 m/s. The batterswings and hits the ball. The magnitude of the force th*tn+i g e6v 6bkh:jn. (3ihhq:q0vlkhat 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 calculz5jyyo/ifccj8* ,e) rator, also at rest. Which one of the following choices is the Newton’s Third Law pair force to the r cz*,jicy/f85o jye) force that the table exerts on the book?

  05.06: The students in a Physics I class were in lab conducting an experimefrfx+r qqgbf44wt8 , *nt related to Newton's Second Law. The collected data were displayed on the graph at the right. From thirg q8+ rft,xff4w *bq4s graph, what conclusions can the students make?

  99.03: If the net force on an object were dmhyo1b7z ksll3u1 k .4. 2dovooubled while at the same time the mass of the object was halved,to1d1 yool47hb32lu v ks z.k.mhen the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accel8 te)up/6z l+xorp6o rzqv r/:erated uniformly from rest to a speed of 20 m/s in o)vrr8 6/ :+rxte6zplz/upqo 10s. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass of ts :swb5wnil8*pk4pgpl9g l -.he trailer is 4 times the mass of the tractor. If the tractor accelerates f5 iwbsk: g g8s9*l4wp.n-pl plorward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explains why large tracm*(w;8k od bustor-trailer trucks generally accelerate m ks ;m(bo8wd*uuch more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on nt*izue5. d d618b uvvhnjm4ar(13 iwa frictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement describes the subseu41i16d d na5w3htbr8nve.z im*(v juquent motion?

  00.13: An object near the surface of the earth with a weight ofob1e :):dafetvi; eo8 100 newtons is accelera1v f; o edai8:b)teo:eted 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 z 1t4fmh.z 5io-ea9kejv.9hgby a constant force of 2400 N. What is the speed of the car 8.0 59 zazmhikv-g1he f49 o.etj.s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides7 mxb-/ 76 ocgolejabmx-3 p(c across a rough horizontal flgo(7ol -mm jcxaxce7 bp-b63 /oor before coming 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 init2jz29 rq2 nawx;kc c,cial velocity 4.0 m/s slides 8.0 m across a rough horizontal floor before coming to rest. The coefficient of friction is:;29ckx z ,crq2c wj2na

  09.21: A 20.0 kg box z/wv44r pg4gsv+e9 o 0jaxsy6remains at rest on a horizontal surface while a person pushes 40+a6 xse4pvws9jvo/ 4gygzr directly to the right on the box with a force of 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 atj-v ao( gxly1o*2.q;wtd m *ap 8 m/s accelerates uniformly to rest on a horizontal surface. The block travels a disjy*x *(;odw2 .1ltm-p avoqagtance 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(g)7w0*t gsw 7thal jm 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 roa 7 thwm)gs0t*j a(gwl7d 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 ijo 7ge04qy 1vkts brakes locv0 y1g7jqeo k4ked. 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 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 slamming on the car75j6vra1 xrp9qb nxy;'s brakes and skidding to a stop. How far would the car have skidded if it had been travelqa9xy5rr71;p b j6n xving twice as fast?

  99.39: The driver of an automobile must carefully 27g ftm2+t qz3egxi9ncontrol each of the following devices. Which of these devices can cause an acceleratix qe ngm9i+z7t 2g32tfon 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 weight mh(vu;j7vgm0l4dlk 3hi+ 9*( ocphwo of 15000 newtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed f9hv*p gum0h+7( wv;i4mjkolclhd3 (o rom 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 floorf*b8tb ;b 6ffe. A person called Ted exerts a force T to the right on the box. A person called Mab bff6btfe*; 8rio 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 rollerw nr5oybsv:i3w /idz c0k+c- p4 7oz8s coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same ele7+cs5cy34wb-i z rv0p wozn:iod 8/ skvation 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 coaster2,lk-ae5l fk r9i hw5j tracks of equal length. Assume that on all tracks the roller coaster carts start from re9 k-jeliw,55fkh l a2rst 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 reach the finish first?

  02.29: Assume the rollercoaster cartrolls frictionlessly along the cusipkl. ,o 3 v *hddfid9mmxbn+vq(/18rved track from point A tlpdqi*v8.dk+(vh 9oxd,/3 s nmi1f mbo point C under the 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 dragzz 23 gqm 2 wzl,y1zvlq4:str7ged across the floor by a rope which makes an angle of 300 with thz72 r z :23vzmq1lz,y4wsgtlqe 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 in the diagram?

  04.40: A 6.0 kg block initially at rest is pushed against a wall by a 195i 3 n1bqbija00 N force as shown. Thecoefficient of kinetic friction is 0j5bai 31q9i nb.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 pna,ctpu6oe0uh9 -o *u ushes a lawn mower across a horizontal patch 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 vuua nc 0*-t,6ho9 oeuparious 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 i;m+koy1px x ;rs moving. Which of the following statements conck1x+ yp; ;oxrmerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is pulle5l3h3+ ja v ulr;uu0thd up a hill with an increasing speed. The crate is not fastened down to the sleigh. What force is responsible for the crateu3vl;uhul3+rt 0a 5 jh’s increase in speedup the hill?