99.36: What happens toa,ew-i +pmdr, y9vbptu +1(n7we erl4 the inertia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not depend onsd85 5oyds (zd the quantity of matter present. Which of the following pd odsy5d5 8(szroperties is NOT an intrinsic property?

  04.16: A 20 kg boulder reg.yedb+ /r+os sts on the surface of the Earth. Assume the Earth has massod+ /es+g ryb. $5.98 \times 10^{24} \; kg$ 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 ispyx/ -7 ul ipbf xc4blksy9vjl(82sd/ 5fca8 1 the magnitude of the gravitational force acting on the earth bx5av pl-kb j 7sy8 s9c 8dixf(/lu1cbyl2/p4fy 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 igwsdksf485 na(;2jj9e 6jrszts acceleratioaj98f;sjjgd 4ks( w ezrn5s26n decreases?

  00.11: A certain particle undergoes erratic motion. At every point in its motc():cv yg kf2m8 cp;hpion, the direction of the particle’s momentum is Ahp;(v)m8fy2:gck pc cLWAYS

  17.14: A block is suspended in 1s.bfu/ 8;kj akwx9)sh,jx sw 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, which one of the following choices correctly identifies the Newton’s Third Law pair force to the force of the st/; uxjsf. w8bx9)kak, s1 shwjring on the block?

  07.18: In which one of theh1n*q 6kwgx0r following situations is the net force constantly zero on the nq h r*10kxwg6object?

  13.28: An object is in free fall close q5 wo-v)m szm4to the ground. A person intervenes and slows the object uniformly to restms5o wvz)q- m4. 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 has three forces, F1 of 30 N, F2 ofzg w9pnz9qk k1(9wlm. 50 N, and F3 of 70 N, ackwn(z9k.mg9zl w9qp 1ting on it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons cpxned3ftk,js j* )0i(jep6o6an be combine to form a resultant with a magnitude of wsejf e6(d 6it pk,x 0pn3j)o*jhich of the following

  10.06: Which of the following /bhcrw9 x-0tq 4:)b bylceud5statements is most closely associated with Newton’s Third Law of Mo:bc-rde)txu/ b 5h 09wqblc 4ytion?

  95.06: The reaction force0rs7ww* (msl.weqq 6 y does not cancel the action force because:

  14.14: A box rests on the floor of an elevator. The elevator is accelewr7-y mlz(.hirating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational force actin( wy -zihm.rl7g on the box by the Earth?

  15.15: A skydiver falls downward through the air with cn,;nfo6 ctgix ky)t u a-knr8*3)mkf1onstant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance acting on m*o, ak;fnkt 8rnxcgk 1f n)6)3yt-ui the skydiver during the fall?

  06.08: A baseball is thrown by a- l5k(se/3;2pcksc, uhg0n c/cobg yoyl4ye5 pitcher with a speed of 35 m/s. The batterswings and hits the ball. The magnitucg2o0eulb;skc5cl 5p ey /gc ( n4oh3y,/kys-de of the force that the ball exerts on the bat is always

  11.13: A physics book sits at rest on fad8 enl7;/bca 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 table exerts on tha; bf7d8/el cne book?

  05.06: The students in a Physics I class were in.i9 od0uj vl p5yy1mc, 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 concluvjmd u, pyo9.ci5l y10sions can the students make?

  99.03: If the net force on an object were doubled while at the same time t 2g8t3 ;tj onzawqz*l:he mass of the object was halved,then the w;o3jztngt *qaz82l :acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly from rm2*uglg5)wt z;2b6za 5rq ccqest to a speed of 20 m/s in 10s. The m;l zt25 zma crqqbcg*wu562)gagnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is travelixqy; tx9bu9* bw v.qr3ng down the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accel9u yrtx.wbv ;qb*9xq 3erates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explainszkh /ec3w3ui. u5 2kdy why large tractor-trailer trucks generally accelerate mykhu/i 2 3c k35w.zeuduch more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink t 4ehpj d;so1g88jn)ijhrows a 2 kilogram ball, giving the ball a velocity )jd gj81n;o s4pihj8 eof 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface of xvacb f2-8ibm/; pw(;:du ticthe earth with a weight of 100 newtons is accele: bticudi(a/;mv 8px2 -;fbcwrated 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 res:nu g kbn5 vb1*vjj2zu6o c*vfmk;2ims m-84bt by a constant force g v2 kcsb 8b6jvnv*4imfu5o1 bm;jm-:u zkn2*of 2400 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 rough ho:+iss x0v)0u( wjizg erizontal floor before coming to rest. The frictional force acting on the block is 3.0 N. How far z0 swj (+g)vusi0xi e:does the block slide before coming to rest?

  95.38: A block with initial velocity 4.0 m/s slides 8.0 m acroh1w fv; etrahf ,lj/5 -osq 7;(q 2aw4)dapqubss a rough horizontal floor before coming to );qpw57 f1daa,raob hev hst q;lqj4-fwu(/2 rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal sc; wqo0xsr;44 umyyteo)u 1.eurface while a person pushes directly to the right on the box with a force of 60N. The coefficient of kinetic friction between the boxoeyw0 socq; t;u4 y)m.uexr14 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 rxq5 +j9x:4xjw5cfq g8 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 +5 g5qwqc4xxfj9 r:jxfriction between the surface and the block?

  00.21: A car of mass m slides across a patch of ice at a speed v with its bra0yyfi( b nrka:h )fajo6(.+v wocu;/qkes 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 road is μ wokor (y6 )nifvaaf:bujh+ .0/;(yq c.
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 bra.zqw+jg .df (dphu,k 3kes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of+3zgjd,phw d.k.u q f( 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 mq z/rzkty:30ab w4. :m o)fqrdakes an emergency stop by slamming on the car's brakes and skidding to a stop. How far would the car have skidded if t3wk0 .zr:bfqodzm:/ q4)ray it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully control z52 lq3:37npe a n:j,8pkae mgbvl/rb each of the following devices. Which of these devices can cause an acceleration in a moving car? bb kep/3a:ne8m2a r zn57j,p:vll3 qg
(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 newton;73a-hza ushp)q 08ceemn 4r as. 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 asce84mn)pu e h a7z-;raha03qt takeoff?

  07.21: A box slides to the right across a hori5gi6mv 5npg dxc8 t:3ozontal floor. A person 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, rank the sizes of these three forces exerted on thec nvm xt d6:35gipo58g box.

  02.27: The diagram below shows three roller coaster tracksytrk2m j65, 9eaer;mf of equal length. Assume that on all tracks the roller coaster carts start from rest at t;ay6,5 e9 mtj e2rrkmfhe 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 leng) e uzvtb3s7v8th. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly over the trackv )uz3tvs8 b7es 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 frictionlessly along s w7y 5r5l(s4vxsl1enthe curved track from point A to point C under the influenc5ysx7w1(ves 5nl4lrs e of gravity. What would be the direction of the cart's acceleration at point

  02.40: A box with a mass of9mtokj0u)0byp xrw ujpu,ey -q,+x ; ti-d 9l+ 50 kg is dragged across the floor by a rope which makes an ang-tp;t,ro+9-yy 0 mx9xp )k,u ujiubqd+0wel jle 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?

  04.40: A 6.0 kg bloc,gg4j.qfy -mek initially at rest is pushed against a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.3q,f.m-gg yej4 0 while the 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 lao8x27q ziv/ stwn mower across a horizontal 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 variz2/ot8xi7svq ous 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 movingfl89 7lsl qfv*. Which of the following statements concernins8*v 79ffqlllg this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is pulled up akujw: 1 ;p;vky hill with an increasing speed. The crate is not fastened down to the sleigh. What force is responsible for the crate’s in u; p1:wkv;ykjcrease in speedup the hill?