99.36: What happens to the inertia of an object when its velocity is doubled..ll l yd r39i1-o:u,hdut nsr?

  02.14: An intrinsic property of matte xjve0 b vva6/qy23pm3/y9o wgr is one that does not depend on the quantity of matter present. Which of the following propw3vx v2ygp3 //aboj v6my0q e9erties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume tyngjge1jge;:)2l+-m(q j dd j he Earth has mass 2y+g1q j-ljg:md de ejng();j$5.98 \times 10^{24} \; kg$ 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/ck 0c . xff9,rcpdawb9: 0tkf is in free fall near the surface of the Earth. What is the magnitude of the gravitational force acting o dr.fkf9c,bf c9:p0w ac/xk0 tn the earth by the sphere? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’snn+v-ljqv /t 99hh8wq velocity to increase while its acceleration decretwv h/qlv n -j+8h9n9qases?

  00.11: A certain particle undergoes erratic motion. At every point in its motionpw xq* w*(y6 t29xwlsi, the direction of the particle’lxsww p69(2it wx**qy s momentum is ALWAYS

  17.14: A block is suspended in the ai 5bgt*q,qzof /r 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 Law pair force to /q5bgo,qt *fzthe force of the string on the block?

  07.18: In which one of the following situations n*0umedha1) qr4xb - lzu08q5l 6utiqis the net force constantly zero6q0bzqxl)l1 8a 5ein-qhu tdmuru 0*4 on the object?

  13.28: An object is in free fall closepj1w e-y2*8 r xdoksr1fnd (*y to the ground. A person intervenes and slows the object u*sk11p 8d-xe2ywjy r fo*rn(d niformly 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 acceleration from gravity is g.

  98.03: An object in equilibrium ha0fdwub 1tyq 2;.u vp2ps three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitude of the resultant ofF1 and Fy0wp 2;q 1tupv2.bduf 2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can be combine tosv)8 5fq0p, t fnp44g6jcewpq form a resultant with a magnitude of which of the folg e860fn4pp)qp vwc,4tq jfs5lowing

  10.06: Which of the following statements is most closely ashtn/ u/juj7rn; xi 8g)sociated with Newton’s Third Law of Mj; rh7nntgux / jui/8)otion?

  95.06: The reaction force does not cancel tqdx2mlld6wc*u9(3j h he action force because:

  14.14: A box rests on the floor of an elevator. The elevator io;ah/: .- vjvwce4 sups accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair 4p; cveoua jvw/s :h.-force to the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls downward through the air with constant9tg rr8 4riei*znje e:q/+z9e speed. Which one ofn irg:zj9 +eeerq9*8te4 /zi r the following choices correctly describes the Newton’s Third Law pair force to the air resistance acting on the skydiver during the fall?

  06.08: A baseball is thrown by a pitcher with a speed of 35 rns -8og j7dncexmzw,)h g.,* m/s. The batterswings and hits the ball. The magnitude of tj ,w mg7zgxnc.d re8*)sh,-onhe 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 calculaj),p;dh qw x(qtor, also at rest. Which one of the following choices is the Newton’s Third Law pair force to thwdxj ,;p()hqqe force that the table exerts on the book?

  05.06: The students in a Physics I class were inkmd 32f gsmd4:34; mmhd hasg+ lab conducting an experiment related to Newton's Sea43km+ dfdg:s3dmhm4gh2 ; smcond 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 d;8a1jyk. p(;y r9dna-kntkwdoubled while at the same time the mass of the w;d;p. dky8 r ak(tny 1k-9anjobject was halved,then the acceleration of the object is

  96.15: A car whose mass il bt4h6ac ew6(s 1500 kg is accelerated uniformly from rest to a speed of 20 m/s in 10s. The magnitude of the net force accelerating the caw 6ab(te4 hcl6r is:

  99.05: A tractor-trailer truck is traveling down the road. The mass of the tra z .wt;o1f5/h5cfmmshy( v( nsiler is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the trailer applies on the wh .1;vymoc5h n(5mf(fs/ztstractor is

  99.16: Which of the following pr n/gr se0( wtm()3vpq6pb q52lii ez1dinciples best explains why large tractor-trailer trucks generally accelerate much more slowly that m e g q eqi/bivltr s265np0dw((1p)3zautomobiles?

  99.19: A 50 kilogram skater at rest on a frictionless w:02z/ j q gxtk3i5vcdu28fm8:nznci rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement describes the subseq2xw: 88 dnjnczk3i0q:gz/v ti52cm u fuent motion?

  00.13: An object near the surface of the earth with a weight of 100 neq3 rekompf*,k*i2 bm9:l 1 fcuwtons is accelerap:9c1 o2kfk* *miub3meqf ,r lted 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 by a constant wp kz2kky*n 4v0v/2xfforce of 2400 N. What is the speed of the car 8.0 s4/k2f nk0 wvp2kzx v*y after beginning?

  98.32: A 3.0-kg block with initial seck6. m:a7s zspeed 4.0 m/s slides across a rough horizontal floor before coming to rest. The frictional force acting on the block is 3.0 N. How fa .zs7m:ek6a scr does the block slide before coming to rest?

  95.38: A block with initial fisbiuq ftwiu/1+z 1(k,r,w5velocity 4.0 m/s slides 8.0 m across a rough horizontal floor before coming to rest. kutrqiiub ,z/1(i15fwfws,+The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a ho4p1d q7xzs/1 4cqit torizontal 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 surface 1zpx4ds/qoti7q1 ct 4 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 unif a vk8z*ziw-o q;-orq*ormly to rest on a horizontal surface. The block travels a dista; *wziv- rqzqo 8oa*-knce 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 v -o8yk1ve y 5oy2cyh/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 tc 5y8/yhoy1o2-eyk vv ires 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 sxhgl .8ody2c5j.b5 atpeed v with its brakes locked. It then hits dry pavement and skids to a stop in a disol.yjgb5hd 28cx .5a ttanced. 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,dvr)tu ca0n( an emergency stop by slamming on the car's brakes and skidding to a stop. How far would the car have skidded if itdtnvr (0ua, )c had been traveling twice as fast?

  99.39: The driver of an automobile must carefully con,pka3 7r )v:ksd0lkdp ka 5*pptrol each of the following devices. Which of these devices can cause an acceleration in a ml7 a5k avpp 0pkds*3)r:d, kpkoving 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 240n (wsum,zk *k((* xejjz my/v700 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 takeok*v( e7/wzkmzuj(jn, m x( *syff?

  07.21: A box slides to the right across a horizontal floor. A person called 68 jyu28(fg*fd; wq8t7pjepv jyo e8hTed exerts a force T to the right on the box. A person called Mario exerts a force M to the left, w6eh8pv 8 8gf28( 7ejypdtoj w*yqu;fj hich 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 show13w; nqelrok;em +1unt 8i ;5(pshs fw cpt--zs three roller coaster tracks of equal length. Assume that on all tracks the roller coelr5wkzh18e3swf1u-; (qpt ;nm-s tn+; p cio aster 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 bj* g(: 3yuoe5c4ycvh8 eh d8ggiditk9kg: .y2elow shows three roller coaster tracks of equal length. Assume that on all tracks the roller coa.yyyogded 5vgki2ehg :3 h:c 9ikj*g(8ct 8u4ster 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 reach the finish first?

  02.29: Assume the rollercoaster cartrolls frictionlesslje nc-kz0 n;i3y along the curved track from point A to point C under the influence of gravity. What would be the direction of the cart's accez -ni3kje; 0ncleration at point

  02.40: A box with a mass of 50 kg is dr lxylpbxu1+ d6)f(*eh agged across the floor by a rope which makes 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? x6fd1*p) b xul+lyeh(

  04.40: A 6.0 kg block initially at jq 0jy0*jne:r*nu49k 2htypdrest 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:*t hjdpkquer2 n0 nj9y0jy* 4 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 oazrobgwrt-qz)3+zsy 7bw/0 d9 *s qw4f 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 wz bzazsbo*9qqdt30wr 7y)g/s w+-r4 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. Whicsjd/xp iz 9*xo2 vi1w9h of the following statements concerning this situation is COp9wid9 svz/2x oi1x*jRRECT?

  06.15: A crate of toys remains at rest o tfh;o.r xq81in a sleigh as the sleigh is pulled up a hill with an increasing speed. The crate is not fastened down to the sleigh. What fqof th; r1.8xiorce is responsible for the crate’s increase in speedup the hill?