99.36: What happens to the inertia of an object when its velocity is double xkb.)n1lrcc6 (* n-npi8r rqwd?

  02.14: An intrinsic property 2rwbc.hvwxd +zi7s3:w es;. fof matter is one that does not depend on the quantit w+.fb7w3esv;i c2d: r.xzswhy of matter present. Which of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of thaek1 f0+i wu4mqewbe (9am b*3e Earth. Assume the Earth has mass q9wfke4e1mbe(0+a a bmuwi3* $5.98 \times 10^{24} \; kg$ 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 surfac k 1ue9 5mp3vi*cirh8qe of the Earth. What is the magnitude of the gravitational force acting on the earth by the sphere? The Earth mcqu35ik9v81* emiph rass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to increase while its acceliji k (u0f;ppfxuc8)z 2p.d,weration 2 ixf,p8i )up k0 p(wd.cju;fzdecreases?

  00.11: A certain paru*,p e gq.u*q0 yeyi9eticle undergoes erratic motion. At every point in its motion, the direp *qegu,* 09y yeiqu.ection of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the q xch3 6w-t0ll;crizsj( 1a f4end of a string held by a person. The person pullc4jcxt3 601hw; liqf zl -rsa(s 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 string on the block?

  07.18: In which one of the following situations is the nw7cjw07 2zu lcet force constantly zero on the object0lwc7z 2wujc7 ?

  13.28: An object is in free fall close to the ground cd2 n/.gcth . pg/vyp/y7fnr9. A person intervenes and slows the ordv/cg9/.yt/nfny 7ph g c.p 2bject 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 magnitude of the acceleration from gravity is g.

  98.03: An object in ly+am+x7m x) t4 rh1tpequilibrium has three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting l)41mytx7x+ +t hmp raon it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 n( epxvm;yoz(7z2 gcjcv3*g:kewtons can be combine to form a resultant wkyp j;v(g:m3e2vocxgzz 7 c(*ith a magnitude of which of the following

  10.06: Which of the following statements is most closel9cs,yxk/b)d*gii/ od y associated with Newton’s 9/cxd gy*)isdbo/ ,kiThird Law of Motion?

  95.06: The reaction for4b(w. w erz/eyce does not cancel the action force because:

  14.14: A box rests on the floor of an elevator. The elevator is accelerating upwo on/n 8/ucn:w/+iuho ard. Which one of the following choices b+woi/ n:n uh/onuo8 c/est represents the Newton’s Third Law pair force to the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls dow nycay8x3f,gx 2-xag 1nward 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 sk-fc3n12ag xy xy8g, xaydiver during the fall?

  06.08: A baseball is thrown by a pitcher with a speed of 35 m/s. To b)eb;l1/)d p65mrl7u4pdjusifn(i he batterswings6pj) lindrfm4b ); 1/u u(o7ibsde5pl and hits the ball. The magnitude of the force that the ball exerts on the bat is always

  11.13: A physics book sits at res4;qfxv tr5o /st 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 table exertfrs5 qxv4/ o;ts on the book?

  05.06: The students in a Physics I class were in lab conducting an experimenfnuj;n jo :2pje9ap6:( fq 0crt related to Newton's Second Law. The collected data were displayed on jp f eu 2jo6jr (;napf90n:qc: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 whixmug+htr8/bvq: -ct7 le at the same time the mass o/+qr t gchx8 :v-tm7buf the object was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 ku6 7q0p )u2lwj .dz tsbju+uo*g is accelerated uniformly from rest to a speed of 20 m/s in 10s. The magnitude ofwju2 olb0s)t u ud.p*6uq7zj + the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass of the l jj*tel 8xtnr*3n/ *gtrailer is 4 times the mass of the tractor. If the tractor accelerates forward,*je t*3g8rl*n/nlxt j the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explains why large tractor-trai7pa0 8v ke.73cjsckoller trucks generally accelp ej7v0 .skc83oack7l erate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a fric 4/yzqojl4wvlk/rb e dqc.(6k* d5lk4tionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement describes the subsequentcqrlo/ dkl 4w kd (.yq6 le4*kvb/45jz motion?

  00.13: An object near the surface ov6 -9*1gc5gyvqkmmwlf the earth with a weight of 100 newtons is acceleratmkw *5l-9cvgygm16vq ed at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 g fwg72-krc6 fapw7f 8kg is accelerated from rest by a constant force of 2400 N. What is the speed of the car 8.0 s gar-cf8 g f6w27kw7pfafter beginning?

  98.32: A 3.0-kg block wfp-n k+ qj8 idvl3g2)gith initial 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 bl3gji+8k-)fnlvgp q2d ock slide before coming to rest?

  95.38: A block with initial velocity 4.0 m/s slides 1lqqbc.p 5. dkbps 76g8.0 m across a rough horizontal floor before coming.bppgl.k6sd5bq7 q 1 c to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a hori5tc-lyh, , aadpkv ,t*x2 ,.uf3tztvyzontal surface while a person pushes directly to the right on the box with a force of 60N. The coefficient of kinet,,,c5t.vay v k*atyft 2l, -d3tpzu xhic 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 on a kl-wb-ho)lg a.v 4ad )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 frictiona -dvg4lhk).wb-lo a ) between the surface and the block?

  00.21: A car of mass m slidecux;: ;r nn*tcji*o v;q 4n+z lhb*6lds across 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 q+*n6*x cv j rctbiu; ;on;l4:nz*hdl of kinetic 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 across a papto uy7,ewc. 6tch of ice at a speed v with its brakes locked. It then hits dry pavement and skids to a stop in a distan w7,ye.tocp6uced. 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 an emeryom )zm bzuu34tor0(- gency stop by slamming on the car's brakes and skidding to a stop. How far would the car have sk0-4tymz 3m(z r)buu ooidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefull5hy +e1y5dk5wvy 2cznls 5/vhy control each of the following devices. Which of these devices can cause an accele kvzev/ly52y 5nwcshd1+yh55ration 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 weig7ygu 5ajxn x1*ht of 15000 newtons is 24000 newtons. About how much ti ujxxn17yg *a5me is needed to increase 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 Ted)e0- vr9yi;nvb( vmag exerts a force T to the ribev g;y9 (ni 0mvvra)-ght 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 the box.

  02.27: The diagram below shows three roller coaster tracks of equal lv5jre;nkkl rz;)2*d: obc(c zength. Assume that on all tracks the roller coaster carts start frk; zr5b2n( : ocdev* jkzc;rl)om 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 equa ukn+f+k+j -a c4a uuif0p;e,zl length. Assume that on all tracks the roller coaster carts start from re; k uk,+zpuaja-f4f+nc ui0+ est 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 frictionlessly along the curved trac3 q4.g; x qc:dawuog0nk from point A to point C under the influence of gravity. What would be the direction of the :gn.;d0 qqaxw o ucg43cart's acceleration at point

  02.40: A box with a mass otk cl:wb7m*k0v -xke3ze) 5eyf 50 kg is dragged across the floor by a rope which makes an angle of 300 with the horizontal. Which of the following would be closest to the co)3- l:y7k k*ktb ecewe5 vzmx0efficient 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 block initially at rest is :.mxk1z 8bi sguxvlfj ,p6 e10pushed against a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of static friction is elb.:xs8vj1xmk,guf 1z 06pi 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 patch of grb vtyn 5it2)dsa+8 oc,ass 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 following relations among the various force mag)dtoi v ab825nt+s, cynitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crate on a table. Neither is moving. Which of d)nm8 h 96swvu2wqxe9 the following statements concerning this sd ex v6)899sw nu2wqhmituation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh;bfqrbnsc/l ,ja */0j+ /ehcrkj o5; r as the sleigh is pulled up a hill with an increasing speed. The crate is not fastened down to the sleigh. What force is respfb,c/jjoj/ cr*srrl ; ea/;+0q5bknh onsible for the crate’s increase in speedup the hill?