99.36: What happens to the inertia of an)g8.h3 6it5q+9-ykwq cgyiplo+ijd q object when its velocity is doubled?

  02.14: An intrinsic property z w4+xjrpw2y, e63mdoof matter is one that does not depend on the quantity of matter present. Which of the following properties is NOT an intr weo6+ mrpwzd2yxj,34 insic property?

  04.16: A 20 kg boulderqkrm;m6r8 61qi nk, 87vc ugus rests on the surface of the Earth. Assume the Earth has maum 8gsqirr861m 6c,v qnukk 7;ss $5.98 \times 10^{24} \; kg$ 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 neax8rsd dzsr8rsx:1 968cq 9cntr the surface of the Earth. What is the magnitude of the gravitationt :c16ddsxzsrnc9srr x889 8qal 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 increase while its accaqh8w)u9*q arso *c:k 5 pxlx2:+ ldq;qcz1koeleration decrease)5olqxo8 xp:*qk+ch k1 u*a c ;qzw lraqs29d:s?

  00.11: A certain particle undergoes erratic motion. At every point in its motioblyrk,0x6r ie7l92)k n.t c pcn, the direction of the particlekrycc i9xpl nb7 t)2r60 k.,le’s momentum is ALWAYS

  17.14: A block is suspended in the air at the 7y/ 5ddq(z;a54up voj8 kkh azend 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 j5av5q/khzdu; 47opyd8 (zakthe force of the string on the block?

  07.18: In which one of the tttmn:pr xnu);m -r;:following situations is the net force constantly zero on t;r- rxt: ;n)m tnmupt:he object?

  13.28: An object is in free fall close to nagqbo5 9(-0dwp1uwa wfjxufu :qgx+c *65 l: the ground. A person intervenes and slows the object uniformly to rest. Which one of the following statements must be tp1+g -0jxo ww5 gfl5 afq*ca9u qn(:u wux6d:brue 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 equilibriim8r(ck qe.29kv2rfq+ ot) muum has three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitude of the resu 8o.kfq2t 9k( me2v+uimr c)qrltant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can be combin) kbl8pv( )zlnpoy.-nc,mj 16cim6: o;utbqne to form a resultant with a magnitudenm)c,b8-pj:un.c ()l m;zoy lp kn61qot6vbi of which of the following

  10.06: Which of the following statements is mo)/pcih0) bizawpl91 ist closely associated with Newton’s Third c1)il)hib 0zp9wi ap /Law of Motion?

  95.06: The reaction forcec1k. vbh*l:/w voe2;ct c- ej 5hndv1z does not cancel the action force because:

  14.14: A box rests on the floor of an elevator.tsmlo x/-8 cs- The elevator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational force acting on the box-8otx ssl-c m/ by the Earth?

  15.15: A skydiver falls downward through the air with constant speed. Which oq( g g89o6)z4ohpybrone of the following choices correctly describes the Newton’s Third Law pair force to the air reso 9oh6p8qg 4gz)oryb(istance acting on the skydiver during the fall?

  06.08: A baseball is thrown by a pitcher wi6zw-t)u6nyjni 9v ; hl4i6gm ith a speed of 35 m/s. The batterswings and hits the ball. The magnitud-l9vi;n6t6ijmz )gn6 w 4hu yie of the force that the ball exerts on the bat is always

  11.13: A physics book sits at rest on a table. On topw) ) dtutcga40jt/aq i5vrql15 n ow(8: lxn4g 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 f/ al(n4)l4jitv w)dx8 o gqqnuatg0 5w rt15c:orce that the table exerts on the book?

  05.06: The students in a Physics I class werxhg*g +h (d7qk v(n/ y;jzi/rfe in lab conducting an experiment related to Newton's Second Law. The collected data were displayed on the graphigz*( nh/y qd;jgv/( r7hfx+k 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 time the mas6sqfs7 ;mnhbosxnv-4 ).ty,r s of the objef6 4 s x-m7)nvqytrh.b;s,o nsct was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly from res9.zwk.oz2o2n ifc7h o gv:to +t to a speed of 20 m/s in + zof7oo.92t 2kcvz.wg :onih10s. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the rob8cd+8az 4t4vkdzn ; iad. The mass of the trailer is 4 times the mass of n4d8 vbzc;+84 kdaiz tthe tractor. If the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explains why large tra1z/ h3ytn,d boctor-trailer trucks generally accelerate much more slowly thah t/ 1bo3ydn,zt automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a 2 kilogramj)spiwdr 639v ball, giving the ball a veloci3j rp6s9vd)w ity 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 100 newtons r+ h;kux.o9)zqck,m his accek.c,z;uox mrkq9 +)h hlerated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 12hx38yp-m 9 utluv pp3000 kg is accelerated from rest by a constant force of 2mu90up8pv p3hxly-3t400 N. What 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 across a roug2m grp 2n;3 jgg2r/zyth w5hz4h horizontal floor before coming to rest. The frictional force acting on the block is 3.0 N. How far does the blo2/gpw;g jrz zh2t g3r25nm 4hyck slide before coming to rest?

  95.38: A block with initial velocity 4.0 m/s slides 8.0 m ;6ky luawj*: ae fdozxwz0*z:+: 2owu across a rough horizontal floor before coming to rest. The coefficient oofz wdyo u ajk:*u6a2 +:;zw:wexzl0* f friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a person pbihi73;gw9vwe b s5q 6ushes directly to the right on the box with a force of 60N. The coefficient of kinetic friction between the box and the sqs3; i9 7gvwibb5wh6eurface 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/sbazt sz9)sul ca +e/+8mro(e 3 accelerates uniformly to rest on a horizontal surface. The block travels a distance of 12.0 m during the slide. Which one of the following choices best represents the coefficient of kinetic friction o+sl )e83(r/mz9zuab act +sebetween the surface and the block?

  00.21: A car of mass m slides across a patch of ice at a speed v wk d a8+:mafxns/t e7/izjppkl09 h-c+-0j v ecith its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinee ph s a0ac/8jf mp+-0dz -:+ tl7kxj/icven9ktic 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 acr y m1pp*y (xjy4y9 :v3hzu7f *g-zxvsfoss 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 anvzzxfsyy* ( *1j7pg m-3yxh:v f9yup4d 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 stopd(r6kr,k3./ prnylc p by slamming on the car's brakes and skidding to a stop. How far would the car have skidded if it had been travelipr,3rklyk. (6p dcr /nng twice as fast?

  99.39: The driver of an automobile must carefully control ea3qr **k azuq3j9l br*lw4p+dn ch of the following devices. Which of these devices ca3*nzr4w qual d3p9*q+br*j l kn 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 wi bnaunj k. 75bfgrz f*qh)6h84th a weight of 15000 newtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36 m/s nearkja5 hrg z46n*bf qu78h)nf b. the surface of the Earth at takeoff?

  07.21: A box slides to the rightp jtf. tup.jqf4*l 1n) across a horizontal floor. A person called Ted exerts a force T to the right on the * .41u pjjfqt lt.)fpnbox. 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 shows three roller coaster tracks oldrfrw 0np+( 92ap9 t oawy56fs,cqn*f equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and mp 5wlqnrfc tndfrp 9w2*9 +as o60a(,yoves 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 lengt;birpf9lqb- 0t,)fxf h. Assume that on all tracks the rolt; ,-rfi)xbflpf 9 0qbler 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 reach the finish first?

  02.29: Assume the rollercoaster cartrolls frictionlesn0k wu2x9gb pvp2 i/3vsly along the curved track from pointv 2i 0bw2pgv/unk9px3 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 kg is dragged across the fl us2o63 ;5ay. tege 3slwxhbf4oor by a rope which makes an angle of 300 with the horizontal. Which of the following would be closest to the coefficient of kinetic frictta4sx f2o33;l bu.heye 5wsg6 ion 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 aga j4d bz5.cv;ujinst a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the cj.j4vzbu5 d ;coefficient 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 horizontal patc - hd) xxm-epu53eetd0h 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 various forces on the lawn mower. Which of eedx5 pmuh-03t ex)-dthe following relations among the various force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crate on a t0my*hph boy/alob3ra)r5 3 3rable. Neither is moving. Which of the following statements concerning this situatioaya o homr0yl b*p3/rbh 353r)n is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sg9qu chz,gwvhs ,mc 7k .,t2,bleigh 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 spee9cbg ,u.,z,kth7sg 2 cwmhqv,dup the hill?