99.36: What happens to the inertia of an object whekj e/:;as*sexf* xt lx-.(m au*n6zson its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not depend on h4f( (pnya5c cthe quantity of matter present. Which of the following properties i(hf4pn(5 accys NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume the Earth (sqfhf2d::t- m .duadhas madtd. s haq:m(:dff2-uss $5.98 \times 10^{24} \; kg$ 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 t y5u 4wslt n/snp7z/zdvx6 i)5v8p -tphe surface of the Earth. What is the magnitude of the gravitlt 6n4 z)5syut- xsv8vzi p7w5/p /npdational 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 incpifnr ,uv26v,qe 27d orease while its acceleration decreasesr ivn7f6 ue,dq,p ov22?

  00.11: A certain particle undergoes erratic moti6w 8 m45vub-8mjmxlepon. At every point in its motion, the direction of the particle’s momentum is A5l8 m6 xp4mmwjbveu 8-LWAYS

  17.14: A block is suspended in the air at the end of a string held nra2texhyj5 :n e,e/r.-1tcf 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 Law pair force to th et,hc5e ntfyx1ne:.r 2ra-/je force of the string on the block?

  07.18: In which one of the following situations is the3 tsksfo1 i2j* net force constantly zerooj*1f2k3s tis on the object?

  13.28: An object is in free fall close to te 0c-d oo(ehm7he 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’socemd -eo(7h0 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, h8/ .ggk; ebh4- ognosF2 of 50 N, and F3 of 70 N, acting on it. The magnitude of the resultan4kes./-b8ho; g ong ght ofF1 and F2 is

  01.07: A force of 6 Newtons and a 2k xy99 5sue s,xr3bj*fgj)c)a.e nreforce of 10 newtons can be combine to form a resulterf 3 gnj9ekbes )s5a )2r.jyx*,cxu9ant with a magnitude of which of the following

  10.06: Which of the following statements is most closely associated wz p3aytjfxq2; spb2;8ith Newton’23yqb2x z8sajp;t;pf s Third Law of Motion?

  95.06: The reaction force does (0g4,+mqh4tkufuxkj not cancel the action force because:

  14.14: A box rests on the floor of an elevator. The elevator is acceleratiek1 /- qj lco;4wemqi;ng upward. Which one of the following choices best represents the Newton’s Third Law pacejlq -qeki1 w 4;om/;ir force to the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls downward through the air wi3q6 , veb j+jv-w:dmgith constant speed. Which one of the following choices correctly describes the Newton’s Thir6 i 3j j+v:vdgm,qbwe-d Law pair force to the air resistance acting on the skydiver during the fall?

  06.08: A baseball isu, ,flnc:h qjl1x3 u04zw2mk sl/in;y thrown by a pitcher with a speed of 35 m/s. The batterswings and hits l;3 i1fyjx/cnk, nml, s:u2q0 h4lz uwthe 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 is a ct6gsu/w +p0vhalculator, also at rest. Which one of the following choices is the Newg0tu +p/6 whsvton’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 conducting an experiment r8x +q,7br x:fy .hyqhre7yq.hrxh8 ybxfq r+,:lated to Newton's Second Law. 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 aty 1+7x-0wab h/ufc lkh(ajpm w2qw2u, the same time the mass of the object was halved,then the accelpwc(hq u/2amy ,kw hl2j01+ ux-bfwa7eration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly from rest t3 g;xe 7 r*6/rbhkszjxo a speed of 20 m/s in 10s. The magnitude of the net force acg/rh7sx;ezxj3 *rbk6celerating the car is:

  99.05: A tractor-traileii 6- o1(/+nntmpgb fkr truck is traveling down the road. The mass of the trailer is 4 times the mass of the tractor. If the tractonk gn/i+(i6otbp1 f- mr accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following pri ppoz -mup8,g3.msf-anciples best explains why large tractor-trailer trucks generally acc u,.o pzg8pfsp -ma-3melerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws f4d4 2.g5jqqs+qepupa 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement dess4pjq 5f4 .dq+uq2ge pcribes the subsequent motion?

  00.13: An object near t /,yaou 5ri86;pypinehe surface of the earth with a weight of 100 newtons is accelerated at;ier ,8yu/ any 6p5iop $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated from rest by a cv 4v)*:yuy yeoonstant force of 2400 N. Whateuv:4*y )y yvo 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 acc6dkr,,i1k c iwlhu-(l nv.9 aross 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 before coming to laucwckdil9 .(hn6,- , 1kvri rest?

  95.38: A block with initial velocity 4.0 m/s slides :ofb -vm ri teva.1m*1tr0o q-8.0 m across a rough horizontal floor before coming to rest. The coefficient of eit0 tov*. 1o1b -frmv:a-m qrfriction is:

  09.21: A 20.0 kg box remains -k7kqjjd+y le; a8r .lat 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 friction between the box ky- d7lj erakq+.8;jland 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 attq -.,wxws5c5+s d zqi 8 m/s accelerates uniformly to rest on a horizontal surface. The block travels a distance of 1 qxqss-+wti.w, d 5z5c2.0 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 5pv6q r 25ey (uvamvi1at a speed v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic friction between the 65(ei 5rqupvv1v ay2mtires 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 3w -g6okosm)ofbg9c.8a0c(y4mvoc ym slides across a patch of ice at a speed v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic friction betbs3c(a govo4oy-mm0)ogcwfc 6.y9 8k ween 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 ss+kwt67dn 9kp03-b wehy0bst top by slamming on the car's brakes and skidding to a stop. How far would the car have s9t+b w3pt60b w0ksnh-y d7 keskidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully contrh+:,:ahqhkz ;xl3fm wl5 t hb7ol each of the following devices. Which of these devices can cause an accel q h:5mb,z ahlxlh7 3;t+khfw:eration 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 newtoci0ujud(y ,/l ns is 24000 newtons. About how much time is needed to increase the/yj(ci0 d,ul u rocket ’ speed from 12 m/s to 36 m/s near the surface of the Earth at takeoff?

  07.21: A box slides ;m9jwydp(- lp6 2yepjto the right across 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 2ej(pd9 yplp jy-6 ;mwfriction 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. Assugj5 jlh*nx( wows5. n rt9qo:5me that on all tracks the roller coaster carts start from rest at the same elevation a(j 5 own:5 s r.w9hltqxjo*gn5nd 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 robzrv /nz +)*qjle8 da1ller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest l +)d8qrz */jvez1nba 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 cur;/, q; brrv,spf br8bm 4)bpnsved track from point A to point C under the influence of gravity. What would be the direction of trbr)p/;s vb;p8bq4r nm,sbf ,he cart's acceleration at point

  02.40: A box with a mass of 50 kg is dragged across the floor- yag7.q0wm cr by a rope which makes an angle of 300 with the horizontal. Which of the following would be closest to th- m7rw.yqg 0cae 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 initialu:z3zr/ yd.*1)cinkeh ;oy qj ly at rest is pushed against a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coefficiento:qz/n*yrd ehjck1 .zuy; 3 i) 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 across a horizonjl 5kp g..a -fy8uyxq-tal patch of grass with a constant speed by applying a force P. The arrows in the diagram corr-l gy-..aq xyfp8jk5uectly 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. Nds-ks ux pv,mm7a t77x)/a06u,ndrq poo/9xgeither is moving. Which of the following statements concerning this situation pddnam p7k0r/avot oq x7u6 -/um7x,x9g s),sis CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is pullen lr,lj a9eidq :2,i;n)yisz+d up a hill with an increasing speed. The crate is not fastened down :lin ;zsriin j,yd 29q,+e)al to the sleigh. What force is responsible for the crate’s increase in speedup the hill?