99.36: What happens to the inertia of an objecx2yv2i .0:i-l4bn fw w2 obzzmt when its velocity is doubled?

  02.14: An intrinsic property of matter is one that d;n1d982 m dxyo u0lqfsoes not depend on the quantity q; 8ddxmy1l9 uno20sf of matter present. Which of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earthkl;g*h c9:h sq;swwpe)d*-ao q ve2f9. Assume the Earth has masvd-2fp9g eecshw ;:qhqoa*w) * k;l9ss $5.98 \times 10^{24} \; kg$ 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 surf m/hnzyr8 ;c 55*ob,mivtp,n tace of the Earth. What is the magnitude of the n5pt5itb,m/oz mn*vy ;hr c, 8gravitational 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 veloci8tlqo2p b * .m34qhqwmty to increase while its acceleration decrw2q h4*mp bq3.ol8t mqeases?

  00.11: A certain particle undergoes erratic motioneu:*l)agwg5 gf9j 5go. At every point in its motion, the direction of 5e9f:awuo) * gjg lg5gthe particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a skiy 1cia-qw-6 tring 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 f ak w-c-6iq1yiollowing 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 :u mx2g3.i1 1ywcqcpw net force constantly zero p x13 :i.cw2qcm ugwy1on the object?

  13.28: An object is in free fall close to the ground. A person intervenes a34 /5azkhxv 3z oe5ffmv :v-z um5:hrpnd 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’xz5/:- f4:a 3vrpz uvz55m e3fhmkhovs 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 50 Nth,t;pi *g 7flhr+5xp, and F3 of 70 N, acting on it. The magnitude of the resultant oir*htx;p+ gh t,7pf l5fF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtonsw zo4y;z y0(m /c8wptxy0ev :e can be combine to form a resultant with a magniw0yoyzce/ v48ewyz p(:xtm;0tude of which of the following

  10.06: Which of the following statemer vzs4p nb1k1)u-1ejq nts is most closely associated with Newton’s Third Law of Motzesqpnb4k1v r11 - ju)ion?

  95.06: The reaction forceut*1r64b 1/. mx*vmdug-ur edc ndh)p does not cancel the action force because:

  14.14: A box rests on the floor of an elevator. The elevator is accelerating upd mda(u:oeco; cim-: (ward. Whic-auoomddei;c m:( ( c:h one of the following choices 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 3p * 8rg8nlvbddownward through the air with constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance acting on the skydiver dur vl8g*8 rd3nbping the fall?

  06.08: A baseball is thrown by a pitcher with a speed of 35 m/s. T160*q k ieh0 io:jngolhe batterswings and hits the ball. The magnitude of the force that the ball exerts on the b1 ki06l qogjhie* :on0at is always

  11.13: A physics book siv/re y3k9x6ya ts 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 force that the table exe3/v yx6 y9akrerts on the book?

  05.06: The students in a Physics I class were in lab conducting an experiment rf3a0qd jpmmxr8*-2cg elated to Newton's Second Law. j8p32qrc0 xm-ad* m gfThe 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 timq-p k1 i)pkw10 2epelee the mass of the object was halved,then the acceleration o il0qk)eeep1 1-pk2w pf the object is

  96.15: A car whose mass is 1500 + ct*1x hmcoiuv3u,r;kg is accelerated uniformly from rest to a speed of 20 m/s in 10s. The mag*c;3hmo 1 x ,r+uciutvnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass of thl c8pz;9m(far e trailer is 4 times the mass of the tractof9z; pam(cl8rr. If the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following princ2e qosp qj(q- 8wy9km6yo c8,yiples best explains why large tractor-trailer trucks generallyc,88qeokw(yq 2-j sy9moyq6 p accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rejr0 ef+tw4n ,ast on a frictionless rink throws a 2 kilogram ball, giwe+farj 4t,n0 ving the ball a velocity of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface of the earth with a wkvx7q/y y0 7daeight of 100 newtons is accelerated atay vkq7x7y/d0 $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated hyk(vxs /(/ev jd/1 t.t9fnfv8yx9ih from rest by a constant force of 2400 N. What is the speed of the car 8.0 s after b/ y v.dkxsfet( 98ivnhxt(1y/fh9 /jv eginning?

  98.32: A 3.0-kg block with initial speed 4.8n)t nzq vwxct ;.ng5eo6 o77tc++z cb0 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 cct5w.n7e)xoq87gn++; vzotcnbz6 tbefore coming to rest?

  95.38: A block with initial velocity 4.0 m/s slides 8.0 m across a roughr:cc vt2c 0lj* horizontal floor before coming to rest. The coefficient of frict20:lcrcc v*j tion is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a person pushfj) ((i7eg8(hjpx pp+ n2 pvdpes directly to the right on the box with a force of 60N. The coefficient of kinetic friction between the box and the surface isdp p8 i)2jpgn vx(((+ he7ppjf $\mu_k$ = 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 accelerate4c1x eh scy*8as uniformly to rest on a horizontal surface. The block trascyxhe8c1a 4*vels 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 across a patch of ice xwe 23 cjr:mu.*kqnv;at a speed v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The2n.e vk3r q:m;*u xwjc 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 wipb4kkh1d 57c*kzw*w jth its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The *5*hc zw kj1 k7pwk4dbcoefficient 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 emergenc ftxse,+r)( imy stop by slamming on the car's brakes and skidding to a stop. How far would the car have skidded if it had been trav +)tfex,mr s(ieling twice as fast?

  99.39: The driver of an automobile must carefully control each of the q j d kjja9 li.zb.e;pv5:u2/pmld1 l9following devices. Which of these devices can cause an accelerat :j59az jlvjm pde/qk92 dib.lulp 1;.ion 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 9u*yy3hkztyf7xv76 b j05jor of 15000 newtons is 24000 newtons. About how much time is needed to incr*tbj 3vy6 05zy7rujx7f9koy hease 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 across a horizontal floor. A pers :vpbujoby 5y2 (*rtek*3c*sfon 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 etv:o y c*ku2r5bf**(yj 3psb 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 of equal length. As.it l2e pp :9d7m3ha51 cehda 4dmgss.sume that on all tracks the roller coaster carts start from rest at the same elevation and movs . ea dch.dit m24 hg1957dma3ple:pses 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 leyimmd-n k dzm+ k aw-8x99+/nvngth. Assume that on all tracks the roller coaster carts start from rest at the same elevation ann+9k 8v-m9yki -mdzmwxd+n a/d 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 alongjzyj/0)1 gab wyyhx. +/t/6cnsj /te d the curved track from pg. z/xnyyt/ da/hbw+s/)6c 1t0j jjeyoint A to point C under 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 m/8vt9pd o4)8(wdsg hugq(tu; -ey+daf4f v xkg is dragged across the floor by a rope which makeuh+x 8 4wgt9)dfqysdpef /v 8ut govmd;-4 a((s an angle 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 ini/ /h3i) rq ppk96akfgktially at rest 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 o)6ka kqfgpi/9 k3/r phn the block after a time of 1 second?

  05.10: A homeowner pushes dp+c;y 7 -dvsna lawn mower across a horizontal patch of grass with a constant speed by applying a force P. The arrows in the diagram correctlyc7y +vp-;ddsn 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. Nevg,ijlfh7 6 7lither is moving. Which of the fglj h7fv7il ,6ollowing statements concerning this situation is CORRECT?

  06.15: A crate of toys remains at1blv; jt ttz8yyyv, ;4 rest 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 the hily1v 4 ljvb, zt;yt;t8yl?