99.36: What happens to the inertia of an object when i:g+cbpv 7g6mtts velocity is doubled?

  02.14: An intrinsic property of matter is one that does not depend on the jn2 (nhd f(jcc9oe8+vquantity of matter present. Whichc(92+j 8fncndevhj o( of the following properties is NOT an intrinsic property?

  04.16: A 20 kg bouldern -9rc;83 eqen+ lglryc0lj6p/ qa/zx rests on the surface of the Earth. Assume the Earth has ma q6z;/cn r peeyxn ll gjr93a0+l8q-/css $5.98 \times 10^{24} \; kg$ 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 neaa xw.o oeej(+*r the surface of the Earth. What is the magnitude of the gravitational force acting on the earth by the sphe.*+ xwa(eejo ore? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity *;y.v:s0p4ibuv8gg bd j1ty nto increase while its acceleration byydu; p4ib: nvv jg80*t.g1sdecreases?

  00.11: A certain particle undergof9 :l v8o oc:4e:pmirdes erratic motion. At every point in its motion, the direction of the parc:vlr9 d4eomi 8:po f:ticle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string h: gp;da0 vu6iq+nef. deld 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 following6;q.+ uni0v e dpd:gfa 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 stdu 2s ;qhi+/4nx4z i,s g. mzeq4ht6eituations is the net force constantly zero ,n;q hzii6t es/+zt4msedxgqh4u2.4 on the object?

  13.28: An object is in free fall close to thjxl i4w7cturp,iv 8: .e ground. 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? The magnitude of the object’s acceleration is a and the magnitux irc7 ,upv48 .ij:ltwde of the acceleration from gravity is g.

  98.03: An object in equilibrium has three forces, F1 okhs3 5s g;a1mdxji4t)f 30 N, F2 of 50 N, and F3 of 70 N, a4 j3;mk)t dssig 5xha1cting on it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 neh;+pyedro v f+1m.y1nrf/ 8 zzwtons can be combine to form a resultant with a magnitude of whichzd r;ef.yvf z/ y+o1prmh1+n8 of the following

  10.06: Which of the following statemen b7e)o fw8g.4prt s2knts is most closely associated with Newton’s Third Law of Motiono7k g2ts4npe)f.rb w 8?

  95.06: The reaction force doebmrfe5(mq*e3e+b -q e s not cancel the action force because:

  14.14: A box rests on the floor of an elevator. The elevator is accelerat6)qs w6k2clcxhyd d 97ing upward. Which one of the following choices best represents the Newton’s Third Law pair for726kwy hsc9qxcd 6l)dce to the gravitational force acting on the box by the Earth?

  15.15: A skydiver fallqwd ,3p9t;v ibs downward through the air with constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance acting on the skydiver duringi,3b9q v tp;dw the fall?

  06.08: A baseball is thrown by a pitcher with a speed of 35 m/s. The bak(jelk 2(gsv3 tterswings and hits the ball. The magnitude of the force that the ba3 2gsljkkv((ell exerts on the bat is always

  11.13: A physics book sits at rest on a table. On top of s rcd71am2tl c8 qz.c*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 the bms8l.a r7c 1q cdtz2*cook?

  05.06: The students in a Physics I class were in lab conduc( . z-)cek0ozcv,r3 x d kdhyxg2a,uc3ting an experiment related to Newton's Second Law. The colle,x-k(ucveg 2kz 3z 0doh rx)cdyc. a3,cted 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 time thefxc a.bo 5hm4xe*h2ihv49i5n mass of abi .vf95 ocx4hh*x5nh mie 24the object was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformlywy0a4j7kd+wlr) a0; wf3haa f from rest to a speed of 20 m/s in 10s. The magnitude of the net force accelerating 4+af aj0awl7yfdhw 0r3 ka;w) the car is:

  99.05: A tractor-trailer truck is travelingbm/28bn:ui9 awdl 9h ru(ot1s down the road. The mass of the trailer is 4 times the mass of thu i b:8hn dm19tral 9(osb2w/ue tractor. If the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the followi, p .xi0ch v5d5bdiudetfoz4 hu 5-))cng principles best explains why large tractor-trailer trucks generally accelerate much more slowly that auue) z,of x4h5ccpdduitb5)i0h-.v d 5 tomobiles?

  99.19: A 50 kilogram skater at rest on 5j(lk :,y ahbga frictionless rink throws a 2 kilogram ball, giving the (kby:5,ahj glball a velocity 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 x 8k:x gd2c:mmwf) l9enewtons is acceledfx):mmk9: 2wegxc8l rated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated f0hkka w*fyr +vui( y h-c2u47zrom rest by a constant force of 2400 N. What is the speed of the car 8.0 s after bai 4y7w(hy+fvk rz2kcu- 0 hu*eginning?

  98.32: A 3.0-kg block with inito+b;ex) lz3ub ial speed 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 far does the block slide)l3b z;+eoxu b before coming to rest?

  95.38: A block with initial velocity 4.0 m/s slides 8.0 m agl+va 0.ov x 2j0jitu2oq l;5zcross a rough horizontal qugjl0a22;zio5v .o + 0lj vxtfloor before coming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remainsa.b5za v/n9zt d -3xexut;9bp at rest on a horizontal surface while a person pushes directly to the right on the box with a force ofue5a ttx;/. xaz pd9-bvbn3z9 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 moving at 8 m/s accelerates uniformly to rest onhcv (i*3tq*w u a horizontal surface. The block travels a distance of 12.0cht3 iw* *(quv 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 a jh5w 6tg 6)qwuspeed 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 road iqtwj6h )6 ugw5s 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 zmhqz+o8-)n37 sc4ue om2* fsyqoa8w 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 tireqz8n o- y+u)woch38asm4mzoes2*q f 7s 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 mrh.xza84hcmy jwoa4a u (b,.;z )o/nnakes an emergency stop by slamming on the car's brakes and skidding to a stop. How far wbhoa)rmcx 84ahj o ,;4uz/any(z..wnould the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully control each of the followfo3 d4xmso(7u6uri+r1ev pz(ing devices. Which of these devices can cause an acceleration in rf+u4 o oes( 6z1mi3u7 dv(pxra moving car?
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net force on a w rs-/d7)zg-hf 3hwka t3v g,mq 5e;udrocket with 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 near the surface of the Earth at wg,u-z3h/vk 3-d5 t7)aqrmfew s; dhgtakeoff?

  07.21: A box slides to the right across a horizontv9+ycpr4 k ki+al 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 thei+c4 p 9ykrv+k right, rank the sizes of these three forces exerted on the box.

  02.27: The diagram below shows three roller pqfx cw1)p/g 5coaster tracks of equal length. Assume that on all tracks the rollerq15 c xwpfgp)/ 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 -:zkoe(q sob 5tracks of equal length. Assume that on all tracks the roller coaster carts start froe5- o (qzk:obsm 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 g:/0shznjdx4 cartrolls frictionlessly along the curved track from point A to point C under the influence of gravity. What would be the direction of the cart's acceleration /hg sx40 j:zdnat point

  02.40: A box with a mass of 50 kg is dragged across the floor bf j h4ks ;2ulbvaqva4-/a2g;vy 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 m2a4-svuf2 bg ah/ jaqvk4; lv;/s as shown in the diagram?

  04.40: A 6.0 kg block initially at p4r1n20u/ rj nii ru2nrest 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 0.5/ r1nin2r2pun j 0riu40. What is true of the friction acting on the block after a time of 1 second?

  05.10: A homeowner piuk,hz folms 6:8 9)vya kge9(ushes a lawn 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 various forces on the lawn mower. Which of the following9( mgf:y8uki9klza)6s e v,ho 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.jkcqio54i .uvf,r; .g Which of the following statements co5vkfji;g .ou4c rq.,incerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is pulled-oi.hyaokeqn, 3f * /csowd/ 7 up a hill with an increaok3-/ofw nia*e/ysq 7od., hcsing speed. The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?