99.36: What happens to the inertia of an object when its veloc 2u(. i6orzdbc:f4nhyity is doubled?

  02.14: An intrinsic property of matter is one that does not depend on tm8x6,;td/i 7dn n5 xh pxr*yzmhe quantity of matter prpm d*/ry7xhnd,t nmz5 ;xx8i6esent. Which of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surbqwcdi 8d 2 q,1 cet;6awk;av9face of the Earth. Assume the Earth has masv ; 8taa q,deb61 qd2i;9cwcwks $5.98 \times 10^{24} \; kg$ 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 is7 kkg4,u(oau( gt6 fat the magnitude of the gravitational force acting on the earth by the sphere? The Earth mass i g6,u (7kgafto4(atk us $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an vl ,n/f;n,x xgjdg.y0p k:.dkobject’s velocity to increase while its acceleration decreases?pxg n/ :k x.0d.,djgfk,y;lnv

  00.11: A certain particle undergoes erratic motion. At every poin +om )wyf1h58d1 k:flm xguuj1t in its motion, t1w oxl)u5 gfhmdj+1my ukf: 18he direction of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end ofx3i +vl +ev9j1jjo(i b a string held by a person. The person pulls on the strijoxib+ v+ l3 9jjvie(1ng 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 situatir 8)fh5a aarz4j0 k+xions is the net force constantly zero on the obj45f8ahx a ja+z irk)r0ect?

  13.28: An object is in free fall close to the ground. A person interv .qfd9; -dbfdo4ysv4k enes and slows the object uniformly to rest. Which one of the following statements must be true about the magnitude of the acceleration of the obje4yvo -9k sfddqdb 4;f.ct 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 th7 fpt6a kvsn* c*6vx/:omu0juree forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitude of the resultant ox/a:mns *v6vuc6jkuf* op0 7tfF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtoa3/phly- yovz*h9 f/us6 0axsl5 .vnhns can be combine to form a resultant with a magnitude of which of the follf/yszl3s65 uhh y a.x*/0lan 9ovph-vowing

  10.06: Which of the following statem.o3( fw0xv7s,nn50 daxrho uk ents is most closely associated with Newton’s Thiwfxa5ro.7(ud n sknh0v03ox ,rd Law of Motion?

  95.06: The reaction force does not cancel the action force becautimwk w*sah . -c6rg nrw1,g/,b4xkf;se:

  14.14: A box rests on the floor of an elevator. The elevye .6;ly;kwc9yy56 pvukq* kv ator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational force acting on the box by the Eac vp5;vyu96l .ky*e;qkyyk 6 wrth?

  15.15: A skydiver falls downward throu7b ;c1jvml l)e ayc+:6iie.ywgh the air with constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair w c:iij a6m lyc1 ;7vebe)+.ylforce to the air resistance acting on the skydiver during the fall?

  06.08: A baseball is thrown by a pitcher with a speed of 35 m/s. The barhu8,e )3x ip 8iwmg*qtterswings and hits the ball. The magnitude of the force tha8qx 3u)hpiw8e *g mir,t the ball exerts on the bat is always

  11.13: A physics book sits at rest on a tael+9awt iyyqq2 p,+o7ble. On top of the book is a calculator, als,twaq p9 y++e7oiylq2o 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 book?

  05.06: The students in a Physics Izth4* g3 3jj+c4lccfxp5 hu, m class were in lab conducting an experiment related to Newton's Second Law. The collected data were displayed on the graph at the right. From tcxt3j,c z +hcm *4p34ju5flhghis graph, what conclusions can the students make?

  99.03: If the net force on an object eyl6k:j5+sw(s dats6 were doubled while at the same time the mass of the object was halved,thk d aessys56:t6wjl+ (en the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accemviz-z t xzh(w /9x(m(lerated uniformly from rest to a speed of (x x/ w-(zvm( tmz9izh20 m/s in 10s. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The v:1im q)dg/hbmass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the trailer applies on the d vhb):q /i1gmtractor is

  99.16: Which of the following principles best explains why large tractor-trailer0)8gusm +r1ct1jv y dv fw;;ff trucks generally accelerate much mor y+0vj;8 )1 frvf1cwtf;mugsd e slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a f:tob l,l5 ka*hrictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/stbaol*5 :khl,. Which statement describes the subsequent motion?

  00.13: An object near the surface of the earth with a weight of 100 newtons muh9z vxp)p9h -4p. niis accel.-xu )4hp hpvp9n mi9zerated 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 rest by a consta ad,9,iz( xlelnt force of il,xa ,9e( lzd2400 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 slide(gsllw3 rhh28s 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 h3w sh(gll2r 8before coming to rest?

  95.38: A block with initial velocity 4.0 m/s ((*k7z+hh-gl e+w0r2 ybskxzk 8apd)nj 1nqh slides 8.0 m across a rough horizontal floor before coming to rest. The coefficient of fric*an 0kqd n(sxeb )1hj7(z r zkyl +kp-hgw82h+tion is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a pe,7,p) s spmawbrson pushes directly to the right on the box with a force of 60Nbpmwss,7, )pa . 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 u rs3ulprh)4(a horizontal surface. The block travels l(4h3 ur u)srpa distance of 12.0 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 speed v with its brake 2d*7cb0 gi 8rsda;e,d :uok)tzgpa(rs locked. It then hits dry pavement and skids to a stop in a distanced. The coefi rr82:,zcegu)d kg;*sd ba ad0(po t7ficient 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 patch of ice at a speed v with its bgdq0+y2qsf zte s:ki*d3p ,5b rakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic friction between theq:istgs ykpef+dq bd*2z3 ,05 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 b8o, ox o1o2s6od-crwwx:/s d y x6y5pdy slamming on the car's brakes and skidding to a stop. How far would the car have skidded if it had been traveling twice as ow/xcx :ps5oroyd,68dd-6os wo1y x2fast?

  99.39: The driver of an automobile must carefully contrc.o abj: k7rs0ah06mqg)js- eol each of the following devices. Which of these devices can caus ar j)hksa70:gceq0so6.jbm-e 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 rockqfpxjw vx ) l(9e-;.+- * 2jpiletuusnet 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 - 9*uuv.we sl);ijenljp-p qx+fx2( t takeoff?

  07.21: A box slides to the right across a horiz2j)*b y+bgpfhm4m(r fh: yav0ontal floor. A person called Ted exerts a force T to the right on the box. A person called Mario exer ) p+hybr :vjfaf04*hmg2 m(ybts 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 b-+dw dnwipad5,u; olc)k*sr o,/lfm; elow shows three roller coaster tracks of equal length. Assume that on all ts;-rlwdlc; f ,aowomd+/ uid5,p*)n kracks 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 showc;rua e i2pqjcq0 7l5*s three roller coaster tracks of equal length. Assume thatcqq ri52jc;ualp7e0* 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 cartrolls frictionlessly alonc+iv 3u1ci+kayt a7hs,)f(ar7o/.y x d v;nnlg the curved track from point A to point C under the influ, r+3i7n/ca+xsvf; (a1u7 vdy.na)toykchli ence of gravity. What 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 floo uld9eas5gj35ei)9;gdz d/ my4am ds- r 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 g ds lz49maed)dy mg ; di9/3eja5u-s5the 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 initwvatg1oyo f9y;za3 fn,4c6 s) ially at rest 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 iyo3o w6 fzy,)aftn41;csv ag9s 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 acros hhsz/9hr (1/j.4l6.dzl (lgqj di tbt+n,j yes a horizontal patch of grass with a constant speed by applying a forceh9dq4n /ldjg,b6lz z/e.i((t+jl1.jh rs y ht 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 yek0f,/ fz w5ox9lah4 - gfx8ta crate on a table. Neither is moving. Which of the following statements conc o wlx fkegz y,t04h59a/fx-f8erning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as th y88jyup i41dne sleigh is pulled up a hill w8 yj4yu1p8di nith an increasing speed. The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?