99.36: What happens to the inertia ofqjl c77b)wke : an object when its velocity is doubled?

  02.14: An intrinsic 0;q3 .qzwld nef6p8 tvproperty of matter is one that does not depend on the quantity of matter present. Which of the following properties is NOT an inqwqd0;f3pnlt e8v6z. trinsic property?

  04.16: A 20 kg boulder rests on the surface of the Eartho .mt0je7w1k3l5y mfw. Assume the Earth has matmk05yemo7 w13flw .j ss $5.98 \times 10^{24} \; kg$ 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. Wha 9 m8axzrm ;5r*sauxb*f/mle )t is the magnitude of the grzm8m) *u mb5r;af xl9sa *r/exavitational 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 increasr/hd mg9/p+ czl1 ta*ze while its acceleration dl/*gc9m zzh1pd r +/taecreases?

  00.11: A certain partij9a:6a x xpgnw)i/lgv.s5 s4kcle undergoes erratic motion. At every point in its motion, t .xgs9k) w 46jnpavl5/ga:isx he direction of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at tqfd dbo ;0.s j,:ofkc7c:0lqnhe end of a string held by a person. The person pulls on the string uniformly accelerating the block upward for a short time. During this time, whcdosqd.kb7 0j0nof lf :q ,:c;ich 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 followkeu0*:fd6x1 97 xapqj is r9dng7kg o4ing situations is the net force constantly zero on ts :9 1ig79 6uangdkp4xxfqork*70e jdhe object?

  13.28: An object is in free fall close to the grou m lp14:jbm7xhnd. A person intervenes and slows the object uniformly to rest. Which one of the following stmbhx l7 m1jp:4atements 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 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 n,zqd1 *cv0+1u svstv 50 N, and F3 of 70 N,cnvv d 1 uv0*t+zssq1, acting on it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of i*2zkcbu jw8 910 newtons can be combine to form a resultant with a magnitude of which of the fobkujc 82 9*wzillowing

  10.06: Which of the following statements is most closely associamoz4,e-2 x) ius znbaef 1+g+dted with Newton’s Third L+,1 bsugz)mea- on+dzf4ex i2 aw of Motion?

  95.06: The reaction force does not cancel the action forcyu w*-xvxe +mz9 j-1ife because:

  14.14: A box rests on(43a:8i8ahk bid nymo-m 0)eatelux5 the floor of 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 ac5ih d aua 4bme0-o3nk e8itx8la:(m)yting on the box by the Earth?

  15.15: A skydiver falls downward through the air with constant speed. dn) lw :ci*)vp,zp o.xWhich one of the following choices co .: vc )nlxpw)dizpo*,rrectly 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 speed of 35 m/s. k:k7)o0rl ej-/:pp:u9 nm tttzg.eni The batterswings and hits the ball. The magnitkgp/0ne-:zt .o7 9t: renumktj: lip )ude of the force that the ball exerts on the bat is always

  11.13: A physics book se yz7htgkny: 339wv8 ( n6kspdits 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 td7(6:pe8 gnvkz st3nyk9wy 3ho the force that the table exerts on the book?

  05.06: The students in a Physics I class were in lab coh0 d+ m6dlke:vdbxb ,xfcw6 36nducting an experiment related to Newton's Second Law. The collected data were displayed on the graph at the right. From thi6d6fhxwd3eb,x:c +km d0bvl 6s graph, what conclusions can the students make?

  99.03: If the net force on an object were doubled i7s1l8f/z u,u/i utka while at the same time the mass of the object wau zsl /fi78iuk,1/ut as halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kuf;:lf0-z 2n6y ffwnzgv6xyc )h/wkj n o/,+wg is accelerated uniformly from rest to a speed of 20 m/s in 1c/fn)/fgk;6ww 60 fow:2vl+fz,-xyhn ynj uz 0s. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mastfa +ns36 yn*.5m w:tjc-le+ ehq(c ybs of the trailer is 4 times the mass of the tractor. If the tractor accelerates t:fny e as6hbn m.c qwtl(+*y35ec-j +forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explains why large tractor-tra*1wq95k ni zjliler trucks generally accelera 1wk95qnlj *izte much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionl cl ux v4v80+/+yoiuwness rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which v+uou l vi8yx0n/+w 4cstatement describes the subsequent motion?

  00.13: An object near the surface of twcl)k;b: ,wi: fxl8sy-v 5ybzk wr2 e:he earth with a weight of 100 newtons is accelerated asyrkz;vfwbl: ex5k2wbi) :l c- y,:w8t $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is axx hd)r)u36zh ccelerated from rest by a constant force of 2400 N. What is the speed of the car 8.0 s after beginningz3rhx xuhd)6) ?

  98.32: A 3.0-kg block with inm:f 9f/e gr zfw5yi2.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 by:5w zi9. 2 gne/ffmrfefore coming to rest?

  95.38: A block with initi6(mqqmxu9v x 5al velocity 4.0 m/s slides 8.0 m across a rough horizontal floor before coming to rest. The coefficient of friction v ( 9q6qxmm5xuis:

  09.21: A 20.0 kg box remaini u g 0acnbm7b2f fp1ge7),b7ks at rest on a horizontal surface while a person pushes directly to the right on the box with a forc21gn)b iu707e7m,gbcpf kab fe 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 at 8 63kcbg w(f4hj:o k e/qm/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 represents the coefficient of kinetoge:j 63q(hfbckw 4/ kic friction between the surface and the block?

  00.21: A car of mass m slides across a patch lajr*32k c0vt1w ok5kof ice at a speed v with its brakes locked. It then hits dry pavement and skids to cr 305kokv1*k tl2j waa 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 ac3g./u9 ldjm: awtj nm,ross 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 between the tireja/:ulj. td3, w nmgm9s 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 emu unbz ye.. u-fp4+*c;iy3puyergency stop by slamming on the car's brakes and skidding to a stop. How far would the car have skidded if it had been travelu*fby z .+y; upuc ynup.e-3i4ing twice as fast?

  99.39: The driver of an a/to-gzfeh 5f1cf3iy2-d5 qgl utomobile must carefully control each of the following devices. Which of these devicl g tfe1f-zqo5f/g d32y5h-ci es 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 weight of 15000 newtons is 24000 nern xqbo5 46k,ywtons. About how much time is needed to increase the rocket ’ speed 6o4k5 yrbn,q xfrom 12 m/s to 36 m/s near the surface of the Earth at takeoff?

  07.21: A box slides to tgw f; ph1i,+7 )hu36:e,ulx dd whsoxqhe right across a horizontal floor. A person called Ted exerts a force T to the ,ohpd7 ;:6xf w1qu h,+uhxewl3i g)dsright 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 the box.

  02.27: The diagram below shows three roller coaster tracks ez wor+t;+g j.vh l mg14:t0ioof equal length. Assume that on all tracks the roller coaster carts start fromtj.gim+t+orho1glv 4;ew z:0 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 length.fm cncky1 2s.7 Assume tha1ncf2m .ys k7ct 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 reach the finish first?

  02.29: Assume the rollercoaster cartrolls frictionlessly along the curved:6 * kmu x dki+3vc+2ppzm6qmv track from point A to point C und 6xp 3c:k+ vki6d+p q*mum2zmver 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 dragged across the floor by 06eclepr0f vyr12,oz 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 a0f1ve r6rlyo 2z,0pec nd 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 9 3s xwl9 ka5xl3i7knba 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 tr9wxlb3kxsn 39la i 5k7ue 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 sih8;yv. ;mv6dco;o0kx. xiy with a constant speed by applying a force P. The arrows in the diagram correctly indicate the directions but not necessarily th.0iy kx;hxdi.o;cv6m;y 8vos e 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 crate3e07q s3trwbf on a table. Neither is moving. Which of the following st3 qrsb0ew73 tfatements concerning this situation is CORRECT?

  06.15: A crate of toys remains at resetyxp8/i 2u- ft 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 increase in speedup thie /28y pu-fxte hill?