99.36: What happens to the inertia of an object when its veloci1yz)v: le,tm0ap;bys ty is doubled?

  02.14: An intrinsic property of matter is one that does not depend on the b sb (pln*e2 z/f83eiwq+ dy-bquantity of matter present. Which of the following pbnqe/d+zp8 3*wfs b(iebyl 2-roperties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests q eur (.c1ft2lon the surface of the Earth. Assume the Earth has mass 1fc2 el .ur(tq$5.98 \times 10^{24} \; kg$ 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.)*q rzgz knr4+ 4f2/ *tjrqg(sgxpu, f What is the magnitude of the gravitational force acting on the earth by the sphere? The Earth m fu,tn4xr2g * qgkzprr4)q/s jg(+z*f ass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to increqc3cdsw, 3vc3yw3h, base while its acceleration decr 3s cdbcww,33chv 3,yqeases?

  00.11: A certain particle undergoes erratic moiubu -a3or5 ))zyc6phtion. At every point in its motion, the direction of the particle’s momr )y6aohp)5uu-3b cizentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string he hu/b8vp* 63idv) 4g7kd pqp*b dnef,rld by a person. The person pulls on the string uniformly v,/pu7gk p63 b)bhdnq48v e**pdfri daccelerating 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 net force constantly zero9rg-+) b;*afnxyzmmz:g n pw ( on the obje zynf*:9gbg( m+r)n axzmw;p-ct?

  13.28: An object is in free fall close to the c :pqyl 7j-+jx9tqz t,z.5lapground. 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 thzl-p+cj5t:9,7z q y.x laqpjte 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 f6z6u, t kqwc-borces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. Thtk zqc6wu- 6b,e magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can be colrrt/ca fvg7;0; 7tmd mbine to form a resultant with a magnitude of which ot adv;7/crglt70; mfrf the following

  10.06: Which of the following statements is most closely associate4k(5 :+ x) idvtatlwwkd with Newton’s Third Law of Motioakdv5)k 4t:( +xwlwtin?

  95.06: The reaction force does not cancel the action fo i /rhm o/-8kok uop7;akx16v*b pto5brce because:

  14.14: A box rests on the floor of an elevq(3l mko 2r-pzator. The elevator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravi(q-2r lp z3kmotational force acting on the box by the Earth?

  15.15: A skydiver falls downwareq:1/orga tjua6 c;j; d through the air with constant speed. Which onet aoj16r/;u ;ja: cqge of the following choices correctly describes the Newton’s Third Law pair force to the air resistance acting on the skydiver during the fall?

  06.08: A baseball is thrown by a pitcher with a speed okr* 165;ololj(pziw( 8fwuxrf 35 m/s. The batterswings and hits the ball. The magnituxj k (rif olzw*(pw51r8;o6ulde of the force that the ball exerts on the bat is always

  11.13: A physics book sits at rest on a tablys:hy; sab- s:mc(p ;ce. On top of the book is a calculator, also at rest. Which one of the followihyba; -sc(:s;:smp ycng choices is the Newton’s Third Law pair force to the force that the table exerts on the book?

  05.06: The students in a Physics I class were in lab conductin+1 w 0ad*n:e-amn enjyg an experiment related to Newton's Second Law. The collected data were displayed on the graph at the right. From this : a1y nnm- wed0n+jea*graph, what conclusions can the students make?

  99.03: If the net force on an object were doubled while at the same time t1o3 nyzx ou 1;zjweb7/m5wv-the mass of the object was halved,then the acceleration of t;v 7u1 x/ ztwzby3w-je1mn oo5he object is

  96.15: A car whose mass is 1500 kg is accelerated v 8oboq9d0 k5cr9bd5y uniformly from rest to a speed of 20 m/s in 10s. The magdk dv9cb58 qo0ryb95onitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mas 6no nmnv ;9s+k,si2ulcu ,1yrs of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the trailermir 1nu+yo 9cu lv ns62,nk,s; applies on the tractor is

  99.16: Which of the following principles best explains why large trz:mo v -/1yhr:l2ty (5 mqeannactor-trailer trucks generally accelerate much more slm m/(nqn h 52vtyr: 1eyz-oal:owly that automobiles?

  99.19: A 50 kilogram skater xz,kb-f,ujvi ii*z:ky(xna l ln0g )20-oyp9 at rest on a frictionless rink throws a 2 kilogram ball, givi0x9kl(2ilk-fz-oay*) ,0jgu,n yxn z pbv i: ing the ball 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 we/hzlxhva ,h:2 ight of 100 newtons is accelhv2hhxa :z/, lerated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg i 4uozhfa 8q ;1f+5srhms accelerated from rest by a constant force of 2400 N. What is the speed of the car 8.0 s aftero8 1saf5 m4zr+;h hfqu beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across+ r,p2a)icr d87k kfeq a rough horizontal floor before coming to rest. The frictional force actik)+cri ,edq f7 82rakpng 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 slides 8.0 m au:pi .)y ogoa8cross a rough horizontal floor before coming to rest. The coefficient of fri8i y)u oao:g.pction is:

  09.21: A 20.0 kg box rema vqo2e4:j txu 0pct:-ains at rest on a horizontal surface while a person pushes directly to the right on the:jvqop02cextu: t-a 4 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 moving at 8 m/s accelerates uniformly to rest on a ho:y 1*+bsaakmwc s u7o)rizontal surface. The block travels a distance of 12.0 m during the s 7*s+c ):a1mbskwu yaolide. 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 speed v with its bracmb:1ieuw 0d* iand)3kes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic friction between the tires and thecei :i )b0n1ddwmua 3* 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 patch of iccziq:)3 i05xkjo :klie at a speed v with its brakes locj xk3ciq0io)k:l:z5 i ked. 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 .

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 stop by slamming on the 05b0v 3qrnkwzmu c,qwfk 6 +j+car's brakes and skidding to a stop. Ho 5nq wujq3z,mkcr0f vk+6b0w+w far would the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an k-fn34.dz b vpautomobile must carefully control each of the following devices. Which ofv.dkz-pn3f b4 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 nem6qizv 6r ih o*m1o;b2wtons. 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 takeofhv * o6mi62rzmob ;1qif?

  07.21: A box slides to the ri. ;5)pddwa 2yfb/8ns jrg0f,n gper0yght across a horizontal floor. A person called Ted exerts a force T to the right on thrb,.nfy)e0 y5p 2/jg gr;f0nwad8 ps de 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 length. Assuoo tsks2) 3spff /)b6o-)p6r(suxvu xomh5h: me that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionle(5ooo-:sko sbhv)tu ps/23f rs)6xx)hup6m fssly 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 coastecyq, l xy8)y5o caj+rugw4.w7r tracks of equal length. Assume.yoa8cjyl gr 7w+y5cw)x,4 uq that 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 cartri w93hhtw:c oljev: p1i6vr :sn;o5 i;olls frictionlessly along the curved track from point A to point C under the influence of gravity. Whatws:iotwh in: ;lp 6vo;e:criv1j9 h 53 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 floor bc1htmt. z al)r -l ui5n5z dmgl+0g;;ey a rope which makes an angle of 300 with the horizontal. Which of the following would be closest to the coefficient of kinetic 0ac)m ;+ldg5tg .hitr; l15lmz-uznefriction 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. j ( u/n.3prgaixewe-,3zhkgak1 2ufp -1ooj at rest is pushed against a wall by a 100 N force as shown. Thecoefficient of kinetic friction/aj-z2eg3pjpw 3 .. rx1uan fki,ok u1-h( eog is 0.30 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 *hs qizlp lo,xlp/;:4o/d*iq lawn mower across a horizontal patch of grass with a constant speed by applying a force P. The arrows in the di*qhs o*:qipl ;,opldl//i4x zagram 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 on a table.u r.)xrb:qf)1 r7spn n Neither is moving. Which of the following statements concerning thiss:rnfq )rn7)up .br1x situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is pulled up a q v k.q8i-(yfehill with an increasing speed. The crate is not fastened down to the sleigh. What force is responsible for th8.yeqq-(f vi ke crate’s increase in speedup the hill?