99.36: What happens to the inertia of0z73a v/fx0ju 5th fwhbl6 7lz an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not j+zufxi ::qa6.j7r czdb-j4 v depend on the quantity of matter present. Which of the following properties is NOT aj6 z7d zrc+ fj:ujixv:.-b 4qan intrinsic property?

  04.16: A 20 kg boulderz) bcqtjdf8 e9bm/1i s ib9./ 1k3ehtg rests on the surface of the Earth. Assume the Earth has mass .3i8b1z eb9m1t9jdb)k/ift/hsge qc $5.98 \times 10^{24} \; kg$ 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. W7)wen09b0xrmupn + twhat is the magnitude of the gravitational force acting p 079xew)w0 nn r+btmuon 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 whilehxo)*2u8genug xmj7 1 its acceleration decrn8g hxx uoug *e)27mj1eases?

  00.11: A certain particle undergoes erratic motion. At every point in its moti l:a u63y4l+ ji5b5kfyofsrk8on, the direction of the particli:lyob j5a 3lu65 kkfsf+48yre’s momentum is ALWAYS

  17.14: A block is suspend6(sztyiz+5pt)wuka * ed in the air at the 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, which one of the following choices correctly identifies the Newton’s Third k)szw 5*z (i+yt6patuLaw pair force to the force of the string on the block?

  07.18: In which one of the following situations is the netw8c7ec;cwq z , force constantly zeroz,cwc 8 ceq;7w on the object?

  13.28: An object is in free fall close to the ground. A person intervenes andcpzyzn c h e68 4tl-po1-z(kt/ 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 accepnzzltycc1z/ tk-(684p- hoeleration from gravity is g.

  98.03: An object in equilibrium has three forces, F1 of 30 N, Fm8kmck ,f+s 7r2 of 50 N, and F3 of 70 N, acting on it. The magnitudek m8s,kc+ m7fr of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newt -*umva9ilg- yons can be combine to form a resultant with a-- yvu *l9gmia magnitude of which of the following

  10.06: Which of the following statements is most closely associateu*;q7 w ewu9kn)yier7g*. u xjd with Newton’s Third Law of M* 79 n rxueqju7kw.g)i;*y weuotion?

  95.06: The reaction force does not cancel the actioi a l j,wm,csxg 2.f/sm*il,x;n force because:

  14.14: A box rests on the floor of an elevator. The elev f nw- hm1esfxe)zl;(s;5xjt+ ator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitatt-sfjnwsxe(5e;1f l mx)+ z;hional force acting on the box by the Earth?

  15.15: A skydiver falls downward through the air wit*+eb n(-gdhoc h constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance acting on the skyhd c*g-e+(obn diver during the fall?

  06.08: A baseball is thrown by a pitcher7(u rd ov e/gvlr866cr with a speed of 35 m/s. The batterswings and hits the ball. The magnitu vl/8(r66 d7egrcuorvde 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 is a 3un; 4(uqcpwj calculator, also at rest. Which one of the following chonpu;c4uj3( qwices 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 clavb *,; c6 z8tnt4zclwxss were in lab conducting an experiment related to Newton's Second Law. The collecte8ntl4 zvzcxbc;w,6 t*d 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 w6f .xmbuyl;a ;0.qsob hile at the same time the mass of the ob6 mybs bqufal.o 0.;x;ject was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is ac oh5hkqp8z ng l191x,u1n,pfjl c. w9w6nqrs,celerated uniformly from rest to a speed of 20 m/s in 1qj z ,klp npq9,owg5r911 ,.sn86c flhuxnh1w0s. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveli1j;nt6e .7,tozdky sdng down the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the tr j nd t67y,se;t1.kdozailer applies on the tractor is

  99.16: Which of the following principles best eyoipd(* (j1m dxplains why large tractor-trailer trucks generally accelerat dyd(i 1p(om*je much more slowly that automobiles?

  99.19: A 50 kilogram se2a , cyre+6t+u-c :vejb5osgkater at rest on a frictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement describe,jovc gyea2crb+5: eu t6-s+ es the subsequent motion?

  00.13: An object near the surface of the earth with a weight of 100 newtonsemt;nipe*l, f,n/ dixm3,zz6 is accelerated eid,ztmmnz /, i plf;3xen6,*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 byu. uit0y nca,d);yim5 a constant force of 2400 N. What is the speed of t0 mdu u.5y) icti;,nayhe car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial wn,4. cfhbb-jspeed 4.0 m/s slides across a rough horizontal floor before coming to rest. The frictional force acting on the bl.jhbbf -n 4w,cock 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 slides 8.0 m ac ie0; jftr97yrz69locgv y( 0eross a rough horizontal floor before coming to rest. The coefficie z7vyf 9oyjrcri6lg;e (00 9etnt of friction is:

  09.21: A 20.0 kg box remains at rew nis 0xdfe8;7st on a horizontal surface while a person pushes directly to the right on the box with a force 7dw8;isfx 0ne 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 uniformzxtev +w-rs4n.v /nk)zoi m0h.r,z8 mly to rest on a horizontal surface. The block.zo)kn4rer-h.+ mi z8zvsmwnt,/ x 0 v 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 and the block?

  00.21: A car of mass m slides 3(ven7 qf29tqrl v ytm+op(/vacross a patch of ice at a speed v with its brakes locked. It( (q/vnv7fp 9e+2to r q3vmylt 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 mass of 2m, it would have skidded a distance of

  00.22: A car of mass m slides across a patch of lan; fu6dvz/w o5 g/ s:8rnv2eice at a speed v with its brakes fzs2dv 58; /vo g wa/re6nuln: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 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 emergenqxf9ce3.qc1 +oqptd7zb6dap.hp *1tcy stop by slamming on the car's brakes andqp 3t9eaod.x1pc*t7h6p zbf. dq c+1 q skidding to a stop. How far would the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully control each jg-k3qzjvn:5dc xgsb/:-if2yt9 3 bkof the following devices. Which of these devicc-nf3gq/tk bxji-:2d:g 3z5 bk j svy9es 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 newtons6knpk1clxrcw; ( l(2,7gu x 6 jd+vtyu is 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36 m/s near the surface of the Earth at takeoff?ltux w6 2n(d6 r1cjy7vk;c+kx,lgu(p

  07.21: A box slides to the right acuwk.)4:huosa ross 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 kou u4w).:h sathere 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 sho9s lfs2ig*k)by8 mtu.2mr 1 daws three roller 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 thess2a*9b1uim m)k 2 r.ytgf dl8 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*f l-odg rpfux4e2zb)th).1e of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and movdtb2erf u)-4p .lhf1 x)e*g zoes 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 ca2/o w/w ewkgz9.yz l-vrtrolls frictionlessly along the curved track from point A to point C under the influence of gravity. What would be the directo z gwe-wvy/l/.zk 2w9ion of the cart's acceleration at point

  02.40: A box with a mass of 50 kg is draggedb15e su qxe u ;42ezeix7l6:fg5pg6cz across the floor by a rope which makes an an i2ez xueggebu;fxeq64p15c7sl 56 z:gle of 300 with the 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 3us2vi s.gq8wkk;5 y drest 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 actin 2q5uw ys ;k8kg.i3dsvg on the block after a time of 1 second?

  05.10: A homeowner pushes a lawn f+5onektm;: l mower across a horizontal patch of grass with a constant speed by applyinm;e5fkno +:lt g a force P. The arrows 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 against a crate on a table. Neither is moving. Which of th- z 5ez0(m2 pd6 cd kkcpae.*ztf56jjze followi*j j5k zm d.0ezczefk(2p5 dzt6c-pa 6ng statements concerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the slei,e u)m. .-fpqjkakb 3sgh is pulled up a hill with anebm.su.,jpq kak-f3 ) increasing speed. The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?