99.36: What happens to the inertiasgyjp( 8kg47x of an object when its velocity is doubled?

  02.14: An intrinsic property 8 skomyby637 oof matter is one that does not depend on the quantity of matter present. Which of the following propmk6s 7oyoyb38erties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assj v rqcz+-bi4 kq*f(ry4x+x z/ume the Earth has mv44zbkc/xizjr++( fqr-xqy* ass $5.98 \times 10^{24} \; kg$ 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 j:pf-yyw34 rnfree fall near the surface of the Earth. What is the magnitude of the gravitational fy34 r: -npwyjforce 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 udtkj* iyidn,0a hnl7.87d4 k increase while its acceleration y ltk8d77i* ,4jdudkh0.an indecreases?

  00.11: A certain particle un u we9kr7z0gm-9 vjgv2;kg0sodergoes erratic motion. At every point in its motion, the di0o-rk u gze27v vm9sg0gj9wk;rection of the particle’s momentum is ALWAYS

  17.14: A block is suspe5 9q3 gx/ggx+jqyokd+ gcxcng b(,*7g nded in the air 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, whic /x59j,o(d3x*x gc+qgkcgg b +qg 7ygnh 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 n*6 v xpfoq9yf+i0fj* /hap;q yet force constantly zero on the objy i0of+f9p6yq/;* *qhx afjpvect?

  13.28: An object is in free fall close to the g a-dlmb/5fc(j3m-gp eround. 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? fma-lgp m5-ec b3 j(d/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 forcescb 9waxxn d5;jgo439g, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitude of the resultant ofFc 4xd 3n;9aw9 obg5gxj1 and F2 is

  01.07: A force of 6 Newtons andxcena05) 9 zr dwm,30)zsclf w a force of 10 newtons can be combine to form a resultant with a magnitude of which of the followm )f 0w0s9rzdn zc)x, acel5w3ing

  10.06: Which of the follow 23ls1ngk/pki ing statements is most closely associated with Newton’s T3ks2/1i lp kgnhird Law of Motion?

  95.06: The reaction force does not cancel th6mn at++n ;5ziyu9 smuax:hx(e action force because:

  14.14: A box rests on the floor of an elevator. Th:vtdl*w 1rudl f*ul +-e elevator is accelerating upward. Which one of the following choices best represents the Newton’s Third L1d-d*t+ lfv: ulwu l*raw 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. Which oeo dcmek-9a ;1 v+uaiv ad mr50cen;72ne of the following choices correctly describes the Newton’s Tcdo7m+e; ; n2ak1a-e59v riev0du machird Law pair force to the air resistance acting on the skydiver during the fall?

  06.08: A baseball is thrown by a puvx g5kme4fau:f:cf)7 -l4fv elw e))itcher with a speed of 35 m/s. The batterswings and hits the ball. The magnitude of the force that thef4f m)4 fcfuvl7v-ak)5l)w:e: ge xeu ball exerts on the bat is always

  11.13: A physics book sits at resccja(v mj+ c6,t on a 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 that the t+( 6,mcjcajcvable exerts on the book?

  05.06: The students in a Physics I class were in lab conducting an experiment rem7wl- oz xuo /+;+flxvlated to Newton's Second Law. The collected data were displayed on the graph at the right. From thiszu l;+ /fwxmvxl-7 +oo graph, what conclusions can the students make?

  99.03: If the net force on an object were doube w7uoiyx 2s*8led while at the same time the mass of the object was halved,2u7so*wyxe 8ithen the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelvcz/tt3xtq q7:;+l p xerated uniformly from rest to a speed of 20 m/s in 10s. The magnitude of the net force l;37tc/pz:xtq+t xq vaccelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass of the tra)/l:jbmd 3cq9 hf9dmdiler is 4 times the mass of the tractor. If the 9q d cdbhldj9mf:3/m) tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles bestxjklv c9i-0o 05j a(ng explains why large tractor-trailer trucks generally accelerat0l0(n- 5i9cjkvxagjo e much more slowly that automobiles?

  99.19: A 50 kilogram skater atkmx (b. c-tvradu:qkq .dfe5ja :d2,4 rest on a frictionless rink throws a 2 kilogram bal.aed( .j4md:b-a5:kfrk,xudqq c 2tvl, giving the ball a velocity of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surfayr/;;ad7t k lum1tpb- ce of the earth with a weight of 100 newtons is accelerated atktylt ;m1;apbr -7u /d $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg isz5jfl1d v 76ic)wp/ .t+b;uz pjez*nm accelerated from rest by a constant force of 2400 N. What is the speed of th jizcj u pz+vp./)wfbel7d*m;61t 5z ne car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 5umj-i :6w ye;ztsw 6q4.0 m/s slides across a rough horizontal floor before: u6t 6zq- yw;eswi5jm 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 4.0 m/s snq d ax lgv-,(q)pp3dy-v/ h.jlides 8.0 m across a rough horizontal floor before coming to rest. T.)d- gnqlq,j ypadh( -3p/vxvhe coefficient of friction is:

  09.21: A 20.0 kg box remains at rest o 7o9qd*i9xtxz0m b /,muvzt, dn a horizontal surface while a person pushes directly to the right on thezzb,td x, /qv9m 0uxo*tdm9 i7 box with a force 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 zds l/6pgo l7)moving at 8 m/s 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 between the surface az/sgdplo l6 )7nd the block?

  00.21: A car of mass m slides across a patch of ice at a spe3t7er y xf,n hrgwv3*+ed 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 ron t er*f3v g73,r+hywxad 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 it0c/3ywv0ea rfs brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic friction between thecwa3 0er0fvy/ 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 cl-yxe5kco(5 o ar makes an emergency stop by slamming on the car's brakes and skidding to a stop. How far would the car have skidded if it5 x(e5kol-yo c had been traveling twice as fast?

  99.39: The driver of an aut:e us,jzf4zvgm n02q i 0v73doomobile must carefully control each of the following devices. gu43zvqim 0zs ,j2e07o:nd fv 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 24000 nd)q rj6eo+dd 1ewtons. About how much time is needed to increao)jer+1 dd6qdse the rocket ’ 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 person called :d esx7 f*d kva29ucw9Ted exerts a force T to the right on the bo *dxfdw7ve9c2:aus 9kx. 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 a1gfr akzu 67)shows three roller coaster tracks of equal length. Assume that r1z 6af g)ku7aon 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 roller coaster tracks of equal length. Abw;+/ 8rpkqro al6v:m eya3d*i s()fgssume +8ak;va/) 36 p:fwr q(ygmedrils*b othat 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 reach the finish first?

  02.29: Assume the rollercoaster cart,7oer woj3 s8sorm;b2rolls frictionlessly along the curved track from point A to point C under the influence of gravity. What w ,3br;wj essmo87roo 2ould be the direction of the cart's acceleration at point

  02.40: A box with a mass of 50 kg is dragged ala, asq6x s(p7c;fd8qcross 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 mov8,sqladaf; x7 scp(q6 e 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 agains0k:hxdw76rk m-9f p evt a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coep 0kd9x7hfme6 -kw rv:fficient 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 horizontc dbm1ull6 fmc.7yo8.,vc1uaal patch of grass with a constant speed by applying a force1,cuu1vym8cl d7fac6.lbom. 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 relations among the various force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crate d.2motps3nw j k*x /(qon a table. Neither is moving. Which of the following s t 3w(2 */p.mxkqjndostatements concerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is pu c5qdq hlvytt8g /157tlled up a hill with an increasing speed. The5q l/75q tcty t1dvhg8 crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?