99.36: What happens to the inertia of an object9y;s +h9*q kooh6vh fj when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does ,t)yqk ( u,tfqnot depend on the quantity of matter present. Which of the following properties is NOT an intrinsic, tytfk)u q,q( property?

  04.16: A 20 kg boulder reu )wl/- u (yxjs9ubt;nzwk (5t3j4luasts on the surface of the Earth. Assume the Earth has masw; 9- nl3swlyuaj/b)tuxu zjk t5((4us $5.98 \times 10^{24} \; kg$ 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 )di v+s mmmv03is in free fall near the surface of the Earth. What is the magnitude of the gravitational force acis)vm3dm0 v m+ting 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 increase while itso/p9e +q 6)xr(pb)yofo6d rp+x1x nyj acceleration deb6op6 d/ xfp 9 +(rxop+1q )nej)yrxoycreases?

  00.11: A certain part +9,mpu 8qjr:cfeyrcxur z zt0y. ,,c.icle undergoes erratic motion. At every point in its motion, the direction of the particle’s moment0c8 ur,9, m.zc+z eyq,jc.f u :yprxrtum is ALWAYS

  17.14: A block is suspended in the air at the end of a string held by a pugx6tc7te*me*0)m d kerson. The person pulls on the string 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 thegmmttcu6*e ) 0k* dx7e string on the block?

  07.18: In which one of the following situations is the net force constantly 48khodw4 /55nmle x(yr wfu1e zero on the rhl( 58w4uxwe/k41yod f5mne object?

  13.28: An object is in free fall close to the ground. A perso mqcwfnv:4/gaznhqwc8s,mk*m : n*-*n 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 m/mwf8aqvhwc*4n*k z-q, mn::*sgn cperson? The magnitude of the object’s acceleration is a and the magnitude of the acceleration from gravity is g.

  98.03: An object in equilibrijc/vx3b; nz 4o/azg -rum has three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting o-c rj4 x/; g3bnzazv/on it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and ao.p6t*x: scr6e4 kdp hd-l0ge force of 10 newtons can be combine to form a resultant with a magnitude of which of the followin4- g6dep kerosthc6. dp:* 0xlg

  10.06: Which of the following statemexuen)8ue4ee1x,p:cw nts is most closely associated with Newton’s Third Law of M8e c:xp4n1)eu e uxe,wotion?

  95.06: The reaction force does not c u3cpg+ cv bea+oy7py8zpb*18ancel the action force because:

  14.14: A box rests on the floor of an elevator. The elevator is accelerating up,9 uvt )e2jy6 ii7ottiward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational force acting on the 7 ,2t6uii t9oit)jev ybox by the Earth?

  15.15: A skydiver falls downward through the air with col2w8 e /m.ntxlnstant speed. Which one of the following choices correctl/lex82m n.tw ly 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 e3 hp/dxs unx9 /,i rs21.qrkepitcher with a speed of 35 m/s. The batterswings and hits the ball. The magnitude of the force that the ball exerts on the bat isxrknee3/rq2ux hpid.ss /9 1, always

  11.13: A physics book sitcvlo- 7w,ej 76m wjs5us 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 the forv-c75 we 6wl7,mjsj uoce that the table exerts on the book?

  05.06: The students in a Physics I class were in lab conducting an experiment oc;1 f6pimcwvc :o:d6related to Newton's Second Loc6f d:wmpc:;ic6o 1 vaw. The collected 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 same time thevgx99 rb ;e/ep mass of the object was halved,then th/epr;v99b ge xe acceleration of the object is

  96.15: A car whose mask2vmd .k +g)wivil2uo19a0ghs is 1500 kg is accelerated uniformly from rest to a speed of 20 m/s in 10s. The magnitude ouo2w9kgkv 0h+mi v ag).id l21f the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mas) ;s 8xtg3p ynv(jyy3fs of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the tj 3;( gyfsntv 3p)8yxyrailer applies on the tractor is

  99.16: Which of the following principles best expla+gyav5m m9 6lyins why large tractor-trailer trucks generally acceler6vmymg ya+l 95ate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink um,(-yl+ e)hj .edh gbthrows a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement describes the subsequent mbmh.eldyg,e )(h+ - ujotion?

  00.13: An object near the surface of t eqyhim;uby3r. 587-q: wsiyphe earth with a weight of 100 newtons is accelerated at se3qyyrib hp-u7imq5y: ;w .8$4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated from p-g:f4ylu,gw2qxrk5zfn. m9 rest by a constant force of 2400 N. What is the speed of the car 8.0 s after beginw nkx lpgg m2r4 f9zf:u.-q5y,ning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a rough horizbv n6 m(0axuy8j:b+jnontal floor before coming to rest. The frictional force acting on tub8m n(nbvj60xjy a:+ he block is 3.0 N. How far does the block slide before coming to rest?

  95.38: A block with initial velocity ven6)kbeg dh(:e1 :dq/p s 4pm4.0 m/s slides 8.0 m across a rough horizontal floor before coming to re1 bee kseg p/m)v4n:p6:(hqdd st. The coefficient of friction is:

  09.21: A 20.0 kg box remainsj/ s*fqyxkflmh58t bg3q 4*u)u4)qe l at rest on a horizontal surface while a person pushes directly to the right on the box with a force of 60N. The coefficient of kinetic fr5 8g*e/b khmyf4ll*u)qu q x3j4ft)sqiction 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 maequ zk0 zzul,j+e(rm:/ *9oamr c.:voving at 8 m/s accelerates uniformly to rest on a horizontal surface. The block travels a distaneu: zeoqr/9czja:uvkar*m (m,z+l 0.ce 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 o2z(0:d(f sp z a0mxrfif ice at a speed v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficien0(:rf(mz ida pzxsf02 t 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 sp;r ,uw9of u6nfeed v with its brakes locked. It6o;,fwu 9 fnur 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 sn ;j4l0g weni v1-ax3uou xw*,top by slamming on the car's brakes and skidding to a stop. How far would the car have skidded if it u0 lo x-i3wwaen xnv g4u;*,j1had been traveling twice as fast?

  99.39: The driver of an automobile must carefully cx8bdt3bze qu)3a7 c*g ontrol each of the following devices. Which of these devices can 8dx7cu*3 at3)bbqeg zcause 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 new-gfv,r1ci*/hhba ;xpn7 v* xntons. About how much time is needed to increp ,;g*-xv1xnvh b7fih/a*n crase 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 acros-j;zz6f knj(k (:oauqs 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(- uknzoq6kjf:( a ;zj on the box.

  02.27: The diagram below shows three . wi5l;gpa02so ck4dk roller coaster tracks of equal length. Assu; ldkisac0k2 p4g5ow .me that 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 coasteq/ ,kt3h is ;zzk90mehr tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly over the tracks to the9it0em3sh;/ hkzqk ,z 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 curvedse dhb+n4rd( 7 track from point A to point C under the influence of gravity. What would be the direction of the cart'snd b (e+7sdhr4 acceleration at point

  02.40: A box with a mass of 50 kg is dragged ac i2 qpafw3 ai;jkacoc98zqm3 8j1c/+u ross the floor by a rope which makes an angle of 300 with the horizontal. Which of the f ;w3iqoqu mz/8ijaf c1cp9 caja8 +2k3ollowing 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 )jk:w+ nh- gtgagainst a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 nt+jgg) :hk-wwhile 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 hfbg 4op,jzn7( qd5+18l wdvbacross a horizontal patch of grass with a constant speed by applying a force P. The arrows(zqj1pb,8 fg7nb+ho4d vd5 wl 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 force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans agazdz*rdo-. -d1 ibm i6oinst a crate on a table. Neither is moving. Which of the following statements concerning this situatiod1d*zzdr-b.m6 i-o ion is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleig-wa:bj7 :buo5 g ge:kwh is pulled up a hill with an increasing speed. The crate is not fastened down to the sleigh. What fu agw:7:-5e:ob wkjgb orce is responsible for the crate’s increase in speedup the hill?