99.36: What happens to the inertia , alsj:.or6zqv rt )c2of an object when its velocity is doubled?

  02.14: An intrinsic property of mattylp.yy;l/lrz,a(+7 jj fz 7 ezer is one that does not depend on the quantity of matter present. Which of the lly; ly,( r.z7+pfz/j7jzeayfollowing properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the j-5aby7osafyyp9ph:t5z )k; surface of the Earth. Assume the Earth has m5js-:oz)ptafyb9y5ka p ;7hyass $5.98 \times 10^{24} \; kg$ 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 sur4o w*mvp xf9:pface of the Earth. What is the magnitude of the gravitational force a :wmp 94*xvopfcting on the earth by the sphere? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to zv j;l2jzt/+r eojwc6c h 8s+(increase while its accelerationvc (ejcrzz6t 2;o+hl sj/+w8j decreases?

  00.11: A certain particle undergoes erratic motion5;uo8fiso,fmwb*;y2g ju 8g t. At every point in its motion, the directionjo 5 g si;b,mt2*8u ;o8guwfyf of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a strin5 1mo/hynbbe m4+ um5wgd0 (aqg 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 identifiem(o1u/bgd aq 0 +5hbwyn4 5emms the Newton’s Third Law pair force to the force of the string on the block?

  07.18: In which one of the following siou. d2;hfo/nztuations is the net force constantly zero on the obje.;h zodu/n2f oct?

  13.28: An object is in free fall close;g:z2j11 rv jas he;upn ja(-w to the ground. A person intervenes and slows the object uniformly to rest. Which one of the following statements must be true ;(renj-az ; 1s1gvwa h2ujjp: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 c szxix/x.vy,v x-b 54of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magx,cxs-ivxyv.54xz /b nitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can be combine to form a r aa 5+kiu1pc :khb:i2wesultant with a makkc1+a i wb:u a:hp2i5gnitude of which of the following

  10.06: Which of the fold rrjn 4rspd, 5r5g,b-kc 7 65thp)m: 2tqbuexlowing statements is most closely associated with Newton’s Third Law ofrr-tbp55rb, :,gstj2nmude5 ) qrxd7 46 kcph Motion?

  95.06: The reaction force does not cannkfl *6,n;nck88h)nu ,nn telcel the action force because:

  14.14: A box rests on the floor oji)mn -ny6vq(yb jw +5f an elevator. The elevator is accelerating upward. Which one of the follow bymw-(+j5jq)6 nvinying choices best represents the Newton’s Third Law pair force to the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls downward through the air with constant rp4dl s,a*+g7reijl8nqykk p 16hg dl 86 1bh(speed. Which one of the following choi6sl6 87igrk4pp,j e18h1ad nr*l+ gb(yh q kldces 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 pitch9plho2dzo8r ,9v jfx ;lea 5k-lc3ov8er with a speed of 35 m/s. The batterswings and hits the ball. The magnv9llo kf,5x2 c3rla9eoz vh8-o pdj8;itude of the force that the ball exerts on the bat is always

  11.13: A physics book sits mza0b2e 0dl h5q(-yl wfi hn7*at rest on a table. On top of the book is a calculator, also at rest. Which one of 5b0aln2h(m*z heflid-ywq 70 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 i9yltexyn0xju ln7s2 u ;t9n06n a Physics I class were in lab conducting an experiment related to Newton's Second Law. The collected da xt9e7tnsu; u yj00ny296l nlxta were displayed on the graph at the right. From this graph, what conclusions can the students make?

  99.03: If the net force on anx1o ;f 3ii/. av4urr2n tomd0w object were doubled while at the same time the mass of the object was halved,then trio1oirtfna20 md.;wvx/4 u3 he acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformlpeqkxlalasap6o6)+ .:mz 1 6e y from rest to a speed of 20 m/s in 10s. m )a6.l6pxlq zao s6:e1 ea+kpThe magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass80s 5kr* w rcflf(3*h/y fncrf of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the h580*r(s cl kf /nrrfyc wf*3ftrailer applies on the tractor is

  99.16: Which of the fv. ewygnq80kz,ks2t 0ollowing principles best explains why large tractor-trailer trucks generally ac n82zgv0kwt0 k.q,ey scelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throwln3g0 a9ecowb,4 yqt5s a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement describes the ng 3o9,l0t4wy ab5ecqsubsequent motion?

  00.13: An object near the surface of the earth with a weight of 100 newtons 8yjby t8oeu0v q4*u- fis accelerated aoj0u*-8ev btfuy8 q4yt $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated from rest by a constant f4 j,y zg7vkv(wz72gz gorce of 2400 N. What is the speed of the car 8.0 s afvzjk yz(7zw 47,g2 ggvter beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides acrossrmt86m os yh(ukh,2o4 a rough horizontal floor before coming to rest. The frictional forys4h h,m (rm8ou6k2toce acting on the block is 3.0 N. How far does the block slide before coming to rest?

  95.38: A block with initye5nu gc-e:*vial velocity 4.0 m/s slides 8.0 m across a rough horizontal floor before comg5cueyev : *-ning to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal svuw*u m f6hglch77dg;)/6 -hlpr+dz zf rr6h4urface while a person pushes directly to the right 6fc r h dv;-r+7glh 6fdzu*mh up/l7gr 6whz)4on the 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 u wcdx)+f u0j.f9kk6 ofniformly 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 x+6.udf fjkc 90k of)wof 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 brakest0g 3jly u+1 qd;ywts- locked. It then hits dry pavement a luqsgd + 1;-w3j0tyytnd 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 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 brakes kc)govfz37rh5+zo ; d locked. It then hits dry pavemen vc;f 7g)5 z+3oohkrzdt 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 stopyq qg6s22q m +g;icq6v/* zhen by 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 fast? qn6gq;ziv*2 q+c2 hyqg6/mse

  99.39: The driver of an automobile must carefully control each of the followtm4/wla0m*nv)z 3zs i n6xlc7ing devices. Which of these devices can cause an acceleration in a moving cazwncl 4z*xtimm/6)l70 v 3asnr?
(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 isg6w n5iw9y 3sa 24000 newtons. About how much time is needed to gw ys569na3wi 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 t2o:d ukb i2ne;o the right across a horizontal floor. A person called Ted exer odk;ei:b2n2uts 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 the box.

  02.27: The diagram below shows three roller coaster tracks of equal ri76ezka 96zj length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly oaziz k676 re9jver 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 roll:rwnw-s.tlb q,io 3p)er coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly over b:s i)r 3n,pwqwt.l-o 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 c-u5)cxw1wb ar vvy(i4k 4s;c furved track from point A to point C under the influence of gv1c ix)44b wwcfs k5au ry;-v(ravity. What would be the direction of the cart's acceleration at point

  02.40: A box with a mass of 50 kg is dragged aaef6 u,m;v :6ng;b bthcross the floor 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 the box and the floor if mva 6gnt bb,:fh; 6ue;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 pushed agaldc;6 3y yxii w-k4xp/inst a wall by a 100 N force as shown. Thecoefficient of kinetic fr- wlkx;dx6 yi cyi3p4/iction 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 lawn mower acr+bzr)i 4az5fd oss 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 zibz d+5raf4 )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 mo(h z vdws/jp0 58vry*gving. Which of the foll/ z0r jygwvv8 hs*5d(powing statements concerning this situation is CORRECT?

  06.15: A crate of toj3 7e6)qbdb7omjzw4i.o ) mcp ys remains at rest on a sleigh as the sleigh is pulled up a hill with an increasing speed. The crate is not fastened down to the sleigh. What force is responsible for th .d4ej7o p)wz mm7)jb oq6ic3be crate’s increase in speedup the hill?