99.36: What happens to the inertia of an object when its velocit(vg(pwfa*d4 vp s8h,h y is doubled?

  02.14: An intrinsic property of matter is one that does not depend on the quanexub6o7pca 9om0a38a( se z2e tity of matter present. Which of the following prop29mae uo6(o8a7ee sb0czp 3xa erties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume tldm33 7nj3.b5yrpxd nhe Earth has masrnp3mbl3 .7dj5dy3 nxs $5.98 \times 10^{24} \; kg$ 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 ;/,c bk,2m c1cdmgk ypp/z,gkfall near the surface of the Earth. What is the magnitudd;c ,/yz1m k mg,pc/gk2kc,pbe 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 increase )v6 w aqgsi4:k b,s fkhy0;(ydwhile its acceleration decryfb (0kgkqa :4;vy) ,6dihswseases?

  00.11: A certain particle undergoes erratic motion. At everz 8xvxzf7 5p7cy point in its motion, the directi75 pzcx zx8v7fon of the particle’s momentum is ALWAYS

  17.14: A block is suspended in wwgpp*z y0 834 uhl*qvbw+c7 dthe air at the end of a string held by a person. The person pulls z7b3 0 *4*yw +lqdv8hgwwup cpon 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 the string on the block?

  07.18: In which one of the following situations is the net force constantl:lka3ssg80e zq)nsm )y zero o8a 0)e :qsml)ngk zss3n the object?

  13.28: An object is in frhjrwz xt2brc3 mhhoa l(*1ky.3 is6,2ee 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 acceleration is a and the magnitude of the act3ho c1*y.(i w2hzb alsr3 6kr xhm,2jceleration from gravity is g.

  98.03: An object in eqb;9ogmel pe0c2erld vl3v,d q )dm:26 uilibrium has three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitude of the r 3 )d92g d:r vp2boel6mq,lecm;vd0leesultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can be z w1okq1t.n 6)6pfq, kvms pbfws5f39combine to form a rez ft)fw1k1s qkpb.q9pm5n6 o3sf 6v,wsultant with a magnitude of which of the following

  10.06: Which of the following statements is most closely associated withk s2ho1*xbjij4m 3.g*kak lj: Newton’s Third Laj32xkj1 o4m*l* hka s.g j:kibw of Motion?

  95.06: The reaction force does u f+do yhhwe68h2+xp7not cancel the action force because:

  14.14: A box rests on the floor of an elevator. ;m/fgz8ns)g+ af8exu The elevator is accelerating upward. Which one of the following choices best represents the f+s ; gm8)/8efnxu agzNewton’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 sm.l4zpl6z jc q0 56vrwith constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance acting on the skyq5cvl6 rl0js6m.4z pzdiver during the fall?

  06.08: A baseball is thrown by a pitcher with a speed of 35 m/s. The batte)/xk)k97n v1x ube (-ejj/(cjpkv m tlrswings and hits the ball. The magnitude of v n )1 m(ku/p7ltkkc (jev9jjbe)/x-xthe 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 calculat/*3g38r sav fzlpmzz6 (ftegzjm5 d(+or, also at rest. Which one of the fo zzaspzmf/j6r5*(mef3l vdg z+ 83(gtllowing choices is the Newton’s Third Law pair force to the force that the table exerts on the book?

  05.06: The students iz x0*gniwk5*. rn:ejrn a Physics I class were in lab conducting an experiment related to Newton's Second Law. The collected data were displayed on the graph at the right. From this grap gxer:5i r*zn kj*nw0.h, what conclusions can the students make?

  99.03: If the net force on ann;,jv bcvf nn+78xmcy 8)x;ws object were doubled while at the same time the mass of the object was halsnwvcxy 8jvm8nf+;b)n;7,c x ved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly from rest to a speep sr wwc:pd,5+fj9: gwd of 20 m/s in 10s. The magnitude of the net force cs :wf+wdj9 w5p:gp,raccelerating the car is:

  99.05: A tractor-trailerin , jw a-pzv0u5t0bkga/a38e truck is traveling down the road. The mass of the trailer is 4 times the mass of th3j,t 8kubzan ei0gv 5ap/0wa-e tractor. If the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles uznm 2,6 -klnebest explains why large tractor-trailer trucks generally accelerate much more slowly that aut6menk2u-,n zlomobiles?

  99.19: A 50 kilogram skater at rest on a frictionl(zpmdfi.e85ngvx , *u ess rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement describes the subsequent motion?8ev*p ,gx5z.inufd(m

  00.13: An object near the surface of the earth with a weight of 100 newtonc8mn1nb/1/ ab0lzthurp xq jh+ k5c*;s is aczmr1tln5// jh*8c cbq1x+ u0bhp kn;acelerated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass;jyz1 n2yv1pzm + /gpc is 1200 kg is accelerated from rest by a constant force z zpvj1nc2m+/y; 1pygof 2400 N. What is the speed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a rough horizontmxh32 t sd.t0u+v-gxual floor before coming to rest. The t+.2xg vstm-0hd 3xuufrictional 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 ve /g5nf;mzwts+locity 4.0 m/s slides 8.0 m across a rough horizontal floor bfswzt gn+;m 5/efore coming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a person p,7coh7:xjapx ushes directly to the right on the box 7 xoah7:x j,pcwith 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/urqo /vzf v,9/s accelerates uniformly to rest on a horizontal surface. The block travels a distance ou,9z/o vr/ vfqf 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 witha0y3*5 jqahf (q n(jhz its brakes locked. It then hits dry (qn 0hfja3(hqyzja5* 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 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 its brakez qn;lj/jdt1 cc;1+s 9pyyo2x s locked. It then hits dry pavement and skids to a stop in a distanced. The coefficienj;jl9o 1p ynq 1/c+cydxzt2; st 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 slammip sb-g.1ot*f0 2wg9 l:g k pwqzd3)uuing on the car's brakes and skidding to a stop. How far would the car 1g *.:3q-0p) kud2wgugiozbp9sl twf have skidded if it had been traveling twice as fast?

  99.39: The driver of an automjxkmd:h haw;ltl v8.c-y dm(z2 r+ u(.obile must carefully control each of the following devices. Which of these devices can cause an acceleration in y. dl-xl+; 2(8 :wt(da.vurjzkmmhcha moving car?
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net force pi .z)mf ore;(on a rocket with a weight of 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 the zo. i;f mp)r(esurface of the Earth at takeoff?

  07.21: A box slides to the right across 31eftdg8cxx2 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 3exg fd2c8t1xsizes of these three forces exerted on the box.

  02.27: The diagram below shows three roller coaster tracks of equal l q. kkp60vby.length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly over the tracb q.0y.6l kkvpks 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 ofbv03k8ts7 mz cu,(j2o o0gyk*zca om) equal length. Assumea *2cu0,)v bo38( ysmkk7tz0cmoogjz 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 reach the finish first?

  02.29: Assume the rollercoaster cartrolls frictionlessly along the curved trn 2 :qvotg+o1kack from point A to point C under the influence of gravity. What would be the dir +2g1:vqt ooknection of the cart's acceleration at point

  02.40: A box with a mass of 50 kg is dragged aci . ylvx89fjbb* tj3jjt+8+t wross 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 bet3 b+ lj+ i*jvfjtwjt.t88xyb9ween 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 res 0bwof.j6b2:a xn2a prxjfm5 8t is pushed 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 abjp560j 2x2m8r:aoxnf bafw. time of 1 second?

  05.10: A homeowner pushes a lawn mower across a horizontal patch of grass w:f)djh h7fnc7vd -z1f ith a constant speed by applying a force P. The arrows in the diagram correctly indicate the directions but not necessarily the magdjd7c:f -hv) z1hffn 7nitudes 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 againx sdky2ekkdf;is;n .-rf 304,ur/kni st a crate on a table. Neither is moving. Which of the following statements concerning this situation is C dfds 4kkfyr k,;nnre2x;3u-i.0/si kORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is pulledkx/s-d 79ujil up a hill with an increasing speed. The crate is nj ik-7 9lxsu/dot fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?