99.36: What happens to the inertia of an object when its velocity is doqho hrs ,k7opci2:e- .ubled?

  02.14: An intrinsic property of matter is one that does not dhoiu1 ,+h c)iv0n .oqqepend on the quantity of matter presen0vhi quq)1oi,c.nh+o t. Which of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume the Earth 62+ 7ziob 0hn +dq8-uy h/xihrupy,fnhas masnz+xud+2ihp7/uhny 6hy0f q-, rob8 is $5.98 \times 10^{24} \; kg$ 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 1v5epl a1 jvn.near the surface of the Earth. What is the magnitude of thejva lpv. 5n1e1 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 veloc;;d8a4np26cy1grxuii h6 ms b ity to increase while its acceleration decrn m iu4 s1h6cgpx y286;baid;reases?

  00.11: A certain partiy) hqa9 a4(,yb j1spjtv ,ez1qpl06aucle undergoes erratic motion. At every point in its motion, the direction of the particle’s momentum is ALW9(bypu 1,ay)1vjhls q4q ta6z ae0jp,AYS

  17.14: A block is suspended in the air at the end of a string held by a piaktpi tp80t+s5*yj: q 7pgmk/0 e;rlerson. The person pulls on the string uniformly accelerating the block upward for a short time. During this time, which one of the fokasl yg tk+ 0tmp5ji ;t/q8:er7p *0pillowing 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 ntsqme.aba30 -et force constantly zero on t.qm- s a3b0eathe object?

  13.28: An object is in free fall close to the ground. A person inte r/wn vip07temczsa;*z50.ta rvenes 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 stoppez*t.5avn0a7z rmw0psc t ;ie /d 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 equilibrium has three fornzy:7wf4af mjhicf(t wem;01 )+jq * oces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The m ia *wzqj )fomt7+0;mfw ech 4y(nj:1fagnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons andww loed3v gk;t5x68j ssy2-jy*b(+an a force of 10 newtons can be combine to form a resultant withesky a2n3( ts l6 v8b*jw-w+gjy;d ox5 a magnitude of which of the following

  10.06: Which of the folu 5ks.ja9/ieaed0 m:qlowing statements is most closely associated with Newton’s Thi9ae0i .u/:5sedm aqkjrd Law of Motion?

  95.06: The reaction force does not /)whrse )0(h iyrb30ch afyi4 cancel the action force because:

  14.14: A box rests on the floor4n d3sbmtsquy5u0.ztoa(gu 6 ,1 lpjcuj/h,, of an elevator. The elevator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair 3t1sdu.bqup06jg utsn,/ uzyj4(ohc, 5 a, lmforce to the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls downward through the air with constant speed. eh6 cwcjdv0f:0h3, dsleyy))+*m y zf Which one of the following choices correctly describes the Newton’s Third Law pair force to thyf cy0cdees *hz03+)hmwd,:yfj)lv 6e air resistance acting on the skydiver during the fall?

  06.08: A baseball is thrown by a pitcher with a speed of 35 m/s. The batt.omx2)d0 icmpsb/7ely/d p k- xw:z6verswings and hits the ball. The magnitude of the force that the ball exertsp2md/v )zc.m kb lyswiex:o0/ 6dpx-7 on the bat is always

  11.13: A physics book sits at rest on a :ke 69svsoo; fg nlt7oi,,mq0 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 n,moiq9s6lg: k0; 7evoos ,tfthat the table exerts on the book?

  05.06: The students in a Phgoym7lmz .:ufk 2ai :oml/28hysics 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 graph, what conclusions can the studen u27 /myam:o8 kflo:2gilz.hm ts make?

  99.03: If the net force o+(lrtgl ,i3ck k-m8 pgd hw/(qn an object were doubled while at the same time the mass of the object was halved,thm ,(wpqh/lkgidg8(3 kr-ctl +en the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated unifoj0rxd)kwt+nrm *e2z67 3gnc wsup:o 5rmly from rest to a speed of 20 m/s in 10s. The magnitude of the net force accelerating th 7c:m6wswr2+jnzxn 5 outgpe*3 )krd 0e car is:

  99.05: A tractor-trailer truck is traveling down the road. The maj2e+f0 w/l+ kwgzmhh (ss of the trailer is 4 hew(z 20flmh+gw/j+ ktimes the mass of the tractor. If the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explainsqxezqc 66:x ,x.zau hum: 3osq.9u; nl why large tractor-trailer truck nh xq3,mu ;sx 6z: oq.xcu9:eqaulz.6s generally accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionlessfy-;f v8gk rcz4vfz;i2j-t i4 rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Whv;fkrfgj iiz 2-v44ytzc- f;8 ich statement describes the subsequent motion?

  00.13: An object near the surface of the earth with a we*l:ohn*-6iy pd,g)0t3uzbx rrak z a.ight of 100 newtons is accelerat 6aap*y-bh dxg orz30i :u,r.zn)*lkted at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 12+phhak*-onf c1 enunvn/10 e +00 kg is accelerated from rest by a constant force of 2400 N. What is the speed of cnf p+una-/h0onevnk+1* 1 e hthe car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a rough horsw kc6hhz31bzvi, hof tiz)w7-5q2x+ izontal floor before coming to rest. -2h sh 7 foc1)iwz5bx3th z+q6,iz vkwThe frictional 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 slides 8.0 m across a rough horiz(ji.oo6mp(di ontal floor. dji6i om((po before coming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains )j4d+pt m .ql)rzs)dbat rest on a horizontal surface while a person pushes directly to the right on the box with a d+rp) l)4qd)jz.bsmtforce 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/sd/ 0 qkx 6hyo8trg/g5f accelerates uniformly to rest on a horizontal surface. The block travels a distance of 12.0 m during the slide. Which one t8hgk6 5g/yxqd 0/orf 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 witcjo.xy8v fc-o **x+qeh its brakes locked. It then hits dry pavement and skids to a stop in a distanc cv*.-8jf +cq xyxoo*eed. 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 mbab 6 8w85+nkoiziny+g9xup2j ,w/d h 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 between the tires and the dry row6nxk g+h8ozi8 9ap,u/ d2ibnjby5w +ad 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 slamming on the car's bra,lv7 ew;fvnuwdnju09r d8/lr1k)ba2 kes and skidding to a stop. How far would the car have skidded if it had been traveling twice as fe/ wrnkfu0bln )dw2,lj9vu ;d817 ravast?

  99.39: The driver of an automobile must carefull1wi:cx.jzaul rh5y7;y control each of the following devices. Which of these devices can cause an acceleration ii5c .j:u ywzxl1 ;ar7hn a moving car?
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net force oqy5,xi)lc,y9fk eyu -y a1.iyn a rocket with a weight of 15000 newtons is 24000 newtons. About how much time is needed to increase the rock1.5ic fay y)qiyk9,lyuyxe -,et ’ 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 perq5xqcb:zxj 8f zs4l6 (gp3u*json 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, ransjb zp:*x5lz(83cf j gq4uq6xk the sizes of these three forces exerted on the box.

  02.27: The diagram below shows three roller coaster tr re7x q- x p3.8) fe,mjbwgq5-so*dciwm)z o(yacks of equal length. Assume that on all tracks the roller coaster carts start from rest woy-q)pibo ,7 -x grqe*xjf.zm 3(e8cswm 5 )dat 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 be traveling the fastest at the finish?

  02.28: The diagram below shows three roller coaster trz,*um 09dhl lfc4woq 9y iker/c +;qr*acks of equal length. Assume that on all tracks the roller coaster car9yr0ulm+rdo * z* ,w;fk l9qhecc i/q4ts 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 rollercoaste g5/n).gei7qohw d,t i:ns,zlr cartrolls frictionlessly along the curved track from point Az7)hg.,in:,wendt /lq i5og s 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 50heu4. fzjg 7ysvnn 2q27vva., kg is dragged across the floor by a rope which makes an angle of 300 with the horizontal. Which of the following would be closest toa f vnu4e vsh27vj27n,. ygzq. 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 v(gj4r p, xb6.63smw.kffwt q 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. W,r xqbw6tf(p jw.v3s gmkf4. 6hat 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 horizontal patch of grassj09 wpsme v:,j with a constant speed by applying 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 rve0 msjwjp,9:elations among the various force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crate on a table. Neither is /5i bze4,xuodmoving. Which of the following stu5,eo/bdx 4z iatements concerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as,a/ pfn/xo:z.; q dpqo the sleigh is pulled up a hill with an increasing speed. The crate is not fastened down to the sleigh. What force f,a nx./q;qp d/:poo zis responsible for the crate’s increase in speedup the hill?