99.36: What happens to the inertia of an object when its velocity is doubled?dk l1yo;j*+q z

  02.14: An intrinsic property of matter is one lamh +n; ) 51pq;rkcyothat does not depend on the quantityncmr5a+l oy kp)hq 1;; of matter present. Which of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests)5,m31 st pks 3x6. hn7ryyrlrtm3i sd on the surface of the Earth. Assume the Earth has m. ryxm3thktn5)3rr 1s6p7smily 3,sdass $5.98 \times 10^{24} \; kg$ 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. What is k)b j wokkg360the magnitude of the gravitational forbk0kw )ok3 gj6ce 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+k a-5v/ n80vbwsu dla increase while its acceleration d ka vd/+a5svubn0wl- 8ecreases?

  00.11: A certain particle undergoes erratic motion. At every point pj-)b9hutk:: + kyqs,x5qunt9hw y3 dz5rt1z in its motion, the direction of the particle’s mome19kqdzst rjy9ytw qn- uhxk 5+ p,zh )5:t:3ubntum is ALWAYS

  17.14: A block is suspended in the air at the end of a string held bynk,dkvbwu0n ;t+z+fjm d*2/fub3l9s a person. The person pulls on the string uniformly accelerating the bl u*3d 2,+bz/f9nu ln; s mtkbkv+w0fjdock 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 constantl7z:- qiwaejm 7y zero onaq:j7ew - zi7m the object?

  13.28: An object is in free fall close to the ground. A person interg p. z6r07r9wy64tqjy i0 vxhlvenes and slows the object uniformly to rest. Which one of the following statements must be true about the magnitude of the acceleration7 xq00 zgjy69 rlwhv4 t6ry.ip 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 acceleration from gravity is g.

  98.03: An object in equilibrium has three forces, F1 of 30o dg 6o6x03elk N, F2 of 50 N, and F3 of 70 N, act3xglkoe6 od60 ing on it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and afl7e w7.d:ex lz0q) h82ayxcoyf u2)k force of 10 newtons can be combine to form a resultant :0o hx yykx2d lf)ue77)a. c2l8z eqwfwith a magnitude of which of the following

  10.06: Which of the following0 5vlr3ps: ulv statements is most closely associated with Newton’s Third Law3ll ur pvs0:5v of Motion?

  95.06: The reaction f.sk -c,fwm5)t t5v, p/gqr2ium;qbbsorce does not cancel the action force because:

  14.14: A box rests on the floor of an elevator. The elevator is accelerating uur 8)k lc9ypo4pward. Whcup4)orlky9 8ich 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 downward through the air with constant speed. f.ig8 83mlhrkkoigfk6s p 3z6;zeu56 Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance aug 5pfromzk6 fi 3 ;zl8gk6hk8e 6si.3cting on the skydiver during the fall?

  06.08: A baseball is thrown by a pitcher with a spe1 p-x(wn9 u/dk.lk lg)scml z3 jttt;2ed of 35 m/s. The batterswings and hits the ball. The magnitude of the force that the ball exerts on thj 2pgl 3su dkmwn;lkx(z- )t1tc /l.9te bat is always

  11.13: A physics book sits at rest on a 4:k23wd v,m yfdopq:gtable. On top of the book is a calculator,p: vq y2m k3d4dfgo:w, also at rest. Which one of the following choices is the Newton’s Third Law pair force to the force that the table exerts on the book?

  05.06: The students in a Pql f/s hx:,7mu :qn7vahysics I class were in lab conducting an experiment relfnqxq,:m:ulsv77 a/ h ated 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 at the same timept (8cs;.9ilk gv ib:c the mass of the object was halved,then the acceleration ob;8(9tkic: si cgpv l.f the object is

  96.15: A car whose mass is 150d- cz7* )ppuzkq p,*ub0 kg is accelerated uniformly from rest to a speed of 20 m/s in 10s. The magz*pu)d qb-c u, pzkp*7nitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down theniil05si- : 0zqe0f qx road. The mass of the trailer is 4 times the mass of the tractor. If the traq 5-i e qn:ixl00szf0ictor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following e6ts5n04+hsor,bo zgxtrw/3 principles best explains why large tractor-trailer trucks generally accelerate much mortbto 3shs5en60w x/r, o+g 4zre slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a 2 kilogrwuh/w,z8n f/ y2gxg/m am ball, giving the ball a velm/wg g8nhzw//y2f u x,ocity of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface of the earth with a weight of rhfl76lk9t2x b;n jw 9100 newtons is accelerjl9bhkt6x7;9 2 frn wlated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerate pmx4ma2x;wb6 0u;ybed from rest by a constant force of 2400 N. What is the speed of the car 8.0 s after beginnam0xmp;yew2 b; ubx46ing?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across :)xt5i2 5tfsepozs e* a rough horizontal floor befo :ie)txez p* 5ts2s5ofre coming to rest. The 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 en fyhp b-yqr6;mz;ddf 45c2.)gwg ,k4.0 m/s slides 8.0 m across a rough horizontal floor before coming to rest. The coefficient of frictye ,qw;;y.mc-)dz64fbkf g p2nhg rd5 ion is:

  09.21: A 20.0 kg box remains at rest on a horizohm8n/3 t g4q tn12ovoontal 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 and the surhv 4t3om8/g2oqn n o1tface 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 uniformly to rest on a ho 9.u qtx(9ju 8sw:a-qc r9kyqvrizontal surface. The block travels a distance v8qqy(u9t -qw xrkc9 9. usja: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 at a9hsts: s zl *8dd1+o1x vl3vbl speed v with its brakes locked. It then hits dry pavement and skids td +bl9*dvzvo1xssht 1:8l s3l o 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 br-c9 etrls cas gl4i;.b)7lg4cakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic friction between the tiresctg749a g s)bl ;cl-.ri4el cs 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 slamming on;cbj2bfoq1idz8 q 0 l33,l * vgcoyut- the car's brakes and skidding to a stop. How far would the lbq280l j *g3f3d1uctizo y q-vobc;, car have skidded if it had been traveling twice as fast?

  99.39: The driver of r3lxsq+l ak,3 an automobile must carefully control each of the following device 3llq+a ,r3xsks. Which of these devices 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 newtons is e z .9m,2vupye)zzzt724000 newtons. About how much time is needed to increase the rocket ’ speed fro9p ,zz27m)eztyvuz. em 12 m/s to 36 m/s near the surface of the Earth at takeoff?

  07.21: A box slides to the rsnf6r: : crl:x/qtsx :mze1r,ight across a horizontal floor. A person called Ted exerts a force T to the right on the br:qf,ers/s6z ctlx 1r m:::xnox. 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 sizes of these three forces exerted on the box.

  02.27: The diagram below sho9z/0+l+ wk 8 ea/e;owyuugzj+gr za /ows three roller coaster tracks of equal length. Assume that y+w9z e0oegzj/ a w+krlz ou;u+8/ga/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 be traveling the fastest at the finish?

  02.28: The diagram below shows three rol3a,h42j iiew yi2 ubw6d-vvz1 ler coaster tracks of equal length. Assume that on all tracks the roller coaster carts start froaviv h62e,d zi yw342bui-j1wm 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 cartrorwtf 1jm ff22zaly) gb c-55t7lls frictionlessly along the curved track from point A to point C under the influence of gravity.c1b2mal7 rtj wf-f5f2)5zgyt What would be the direction of the cart's acceleration at point

  02.40: A box with a mass of 50 kg i--jtexo2o lp. go.1xds dragged across the floor by a rope which makes an angle of 300 with the horizontal. Which of the following wox.d- eox2.jogpo -tl1uld 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 rest is pushed against a wall by a 100 074q. 4 2zxgadkhs ykdN 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 tazgk2kqsx4.d4hd0 7 y he block after a time of 1 second?

  05.10: A homeowner pushes a lawn mower across a horcl .)jt/0u2 *y pkmztdizontal patch of grass 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 variou0c t* 2pt)k.ydmz/ljus 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 agains7b.r8q+2 ejqstwn s1r t a crate on a table. Neither is moving. Which of the following statements concerning this sirqq b7+r82 s.n1 sewtjtuation is CORRECT?

  06.15: A crate of toys remains at rest h5( ebc ot:5hak7fz, yf gqz//on a sleigh as the sleigh is pulled up a hill with an increasing speed. The cb, haffoh/zyq 5k(c:tg7z 5e/rate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?