99.36: What happens to the inertia of an object when its velocitypl;g j(o cstrtb*t nks*2,-c8zbg-7k is doubled?

  02.14: An intrinsic property of matter is one that does not depend on theyzyt 4+;sbc1/joaf6rb q2 g c.+kyn-i quantity of matter;6.i nc rt bc 4-ojqs+g/byyzy1+f2k a present. Which of the following properties is NOT an intrinsic property?

  04.16: A 20 kg bouldv ah n;.nm/d11gn y4fqer rests on the surface of the Earth. Assume the Earth has man1.1m4aq/h y;n n fgdvss $5.98 \times 10^{24} \; kg$ 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 Ea sp;*1uvs4df6 gqn,qkrth. What is the magnitude of the gravitational force acting on the earth by the spn*qd;v1q,ksfgs 6u4phere? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to increase while its acceleratio7xlm kcgu+7:pngu:c xm7plk7+ decreases?

  00.11: A certain particle undergoes erratic , + nh;eht 9)3hhc qf xyf8(;rrvlav)emotion. At every point in its motion, the direction of the particle’s momentlyrv;(8+)ahq;x9 v ff r 3hh)ehntce,um is ALWAYS

  17.14: A block is suspended in the air at the end ofo 1/ vl 3jo,u (m(;d8 1pqwpkfecpsvk2 a string held by a person. The person pulls on the string uniformly accelera1uwl, kqkvpfp(2 / p(d1msc;8voejo 3ting 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 4 yads0jge avuo* ;r* kv(mkqop0)5)n is the net force constantly zero on the objecv q 0e spj km5g;u(yrv*ona )ko4d)*a0t?

  13.28: An object is in free fall closeru w*vi,v4uik- *skg * to the ground. A person intervenes and slows the object uniforml,wk*k v*v gui*su -ir4y 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 acceleration is a and the magnitude of the acceleration from gravity is g.

  98.03: An object in 1bi/sql ,0fl gequilibrium has three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, act l/ l,gfbqs10iing 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 auf5mn(3 wg4 dzj*q ge1 resultant with a magniw e3g*f(1g nq mju4z5dtude of which of the following

  10.06: Which of the following statements is most closely associat5.4 k fgey4 ot9w.mwoned with Newton’s Third Law ok 45w9mfn. 4eg tyoo.wf Motion?

  95.06: The reaction force does not cancel the action force because4k1 so;n w1qyk o:gh-wwqtp40:

  14.14: A box rests on the floor of an elvnnfx3b48b4 ibn yo:775omz zevator. The elevator is accelerating upward. Which one of the following czy 7 vobn7o5n4mf b3n8i zb4:xhoices best represents the Newton’s Third Law pair force to the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls downward through the air with constant v k3/nh/1g2g7g rwc; q1calvgspeed. Which one of the following choices correctly describes the Newtorgc 17n/qvkcwlggvg/ h; 2a1 3n’s Third Law pair force to the air resistance acting on the skydiver during the fall?

  06.08: A baseball is thrown by a pitwbf5eqh 7cx 9(cher with a speed of 35 m/s. The batterswings and x7( bw5f qhe9chits 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 q lru/1 tu .q7ujiwj:szd8,;iis a calculator, also at rest. Wwrqui j;u,u z /:817td.s jlqihich one of the following choices is the Newton’s Third Law pair force to the force that the table exerts on the book?

  05.06: The students in a Physics I class were in lab conductqrdl.hfv5bc /ei wv/0( x(,nzing an experiment related to Newton's Second Law. The collected data were displayed on the graph at the right. From this graph, what z/ v x(5w(f.cdv rq,l0he/binconclusions can the students make?

  99.03: If the net fowy.m)2ga95uab6oy . 0gze aomrce on an object were doubled while at the same time the mass of the object was halved,then the e0y.2uz6yaaow g. a)ob9 gmm5 acceleration of the object is

  96.15: A car whose mass is 1500 kg is acc+i*r;z.) qnamz:uf vpelerated uniformly from rest to a speed of 20 m/s in 10s. The magnitude m;)z+ :*nrqvaf. zipuof the net force accelerating the car is:

  99.05: A tractor-trailer truck ) sj06-sfkha y95lqhbis traveling down the road. The mass of the trailer is 4 times the mass of the tract0hy 5qlkhabs 9fj)6 -sor. 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 tractor-tra:-mt4bo; k xjxiler trucks generally accelerate much more s4mtb j- ;xox:klowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a 2 kilogram bd-e wu7kps w5,all, giving the ball a velocity of 10.0 m/s. 7,d kwe-5spuw Which statement describes the subsequent motion?

  00.13: An object near the surface of the earth with a wj a:ty )qihc1k/ 3,,b f :84gztaptrnleight of 100 newtons is accelera zqpa,hcyl1a r:3f, tttb /4i8 )jngk:ted at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose ma.p,d4tgv8a 4 pfob6n,z5 ag ross is 1200 kg is accelerated from rest by a constant force of 2400 N. What is the speed of the g5a 484o6tpnpgb, f.dazrvo ,car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides acrosxb1kfwfa h -an z)0r-w5q/k z4s a rough horizontal floor before coming to rest. The fric-hr4- wk0zffx k 1bn)aw/qa5ztional force acting on the block is 3.0 N. How far does the block slide before coming to rest?

  95.38: A block with initial velocity 4.0 m/s s0)c o( )rhj gpjd0jz5slides 8.0 m across a rough horizontal floor before coming to rest. The coefficient of frr j )pjd c)(050gzhjsoiction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface whilek.bc(f :rslj q2fj0aon x;6-n a person pushes directly to the rigl a 0ck -bj:fq.jno6(rx2fsn;ht 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 at 8 m/s accelerates uniformrs,pfq,0m q 2n n3m4;qjm 1occly 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 kinetic friction between the surface ao,1m;0 s42jmqncc rn p3,qf mqnd the block?

  00.21: A car of mass m slides across a patch of ice at a speed :(:o plz4i w(qftiuou7w2b77.x4pzcu 3k iuz v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient o : 2(uopi7zlzio 4c(z: w 7x7ut u4.3kpbuiqwff 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 speed v with ik 4i 1le7p2ppowyj2z9 ts brakes locked. It then hits 74opk py lepz2219wijdry 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 st8 ep3bdi7 * jokp73v6kv3j/cp 4ean 6auh9m nlop by slamming on the car's brakes and skidding to a stop. How far would the car have skidded if it had been traveling tw7e3jabk anjv6koh36umnv e l*94ip3 pc/ 8pd7ice as fast?

  99.39: The driver of an automon-d/1xp5 ;q0 p dxnyixbile must carefully control each of the following devices. Which of these devices can cause an acceleration in a moving car? x5pd pd10yq;xx /n-ni
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net force on a rocket with a weight of uaa+z*,fm.u w 15000 newtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36 m/s near*a.w,z aumf u+ the surface of the Earth at takeoff?

  07.21: A box slides to the right across a horiz z3pvzf:2vc ilohwn +,(g5ty .ontal floor. A person called Ted exertnwgvyt: fz2c +o,l h(.zv53ips 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 on the box.

  02.27: The diagram below shows three rollerkqz- ;v1rthj3c2m t*y coaster 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 the finish.*y2 -kv3j;ht1z qmctr
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 c cf)-ox cfr-zeq qs82,po.-nyoaster tracks of equal length. Assume that on all tracks the roller coaster carts start fr-o)fr8fe c2y .-co qnxz,sqp -om 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 frictionleso nb* -p;z.vtct*pz8wsly along the curved track from point A to point C under the influence of gravity. What would be the directionpzt8pvw*zc o;t*.nb - of the cart's acceleration at point

  02.40: A box with a mass of 50 kg is draggedn 2k2c dz86qxm7z5l yc 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 oznq6zlcc258k2x 7 ydmf 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 pulrnm*9m9zwd:siu01 qshed 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 after a time of 1 secrim :n9zld*9 0us1m qwond?

  05.10: A homeowner pushes a 9o67,.udt(hmnmr9 k : tztgbn cv:rr2lawn mower across a horizontal patch of grass with a constant speed by applying a force P. The arrows in the ditr( :6h:,r2 vknb9u ztm9ct7dr.o gnmagram 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. Ne(vsk3n /-teure)phs: ither is moving. Which of the following statements concerning this situation is COekh(/3 rpsnuts)v- :eRRECT?

  06.15: A crate of toys remains at rest on a sleigh as 4zht.-hye2t jm ctm0 5the sleigh is pulled up a hill with an increasing speed. The crate is not fastened down to the sleigh. What force is responsible for t-yhc5t m2mt .thej 4z0he crate’s increase in speedup the hill?