99.36: What happens to the inertiby,cu: so.)g ya of an object when its velocity is doubled?

  02.14: An intrinsic proper4g:p)*szj(gcf ej/ -q 1e fppity of matter is one that does not depend on the quantity of matter p4zp*fpj-/ ig j: gqs fee)c1p(resent. Which of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surfack(0rajso ,e:md8i +nbe of the Earth. Assume the Earth has mass is m(ajod:+r,0en k8 b$5.98 \times 10^{24} \; kg$ 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 themc2ez75yx y z ee1)b+8gd5v pp surface of the Earth. What is the magnitude1m5ey y8)x+bpv5pde 7 zcze2g of the gravitational force acting 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 i4 n2 qtvr9hcpt )p/h3uncrease while its acceleration decreasn)vtut/hrpp 2934q ch es?

  00.11: A certain particle undergoes erratic motion. At every point in itt8,r(a 0vdwx ls motion, the direction of the particle’ d tw(vr,8al0xs momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string held by a igqdwpj3 6p8 lwbc52r3 .ab x+person. The person pulls on the strinc2 +wibx. r3dj6gawbq lp5p38 g 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 follqvynjj g)ot.x9 zi. 1-owing situations is the net force constantly zero x1 .)g9tvo-.zjnyq ji on the object?

  13.28: An object is in free fall close to the ground. A pn*v/lb*wcn60p :c pi5cp8o pjerson intervenes and slows the object uniformly to rest. Which one of the following statements must be true about the magnitude of the acceleratp/ *p ln8cijwo: 6b0 cpn*v5cpion 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 tlv c)y(bme 5(vhree forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitude of the resultant ofF1b(m elv(yc)v5 and F2 is

  01.07: A force of 6 Newton2 h3b1+rlh dt*m((dfgb z3vpus and a force of 10 newtons can be combine to form a resulta *bhd1gzlb3tpm(3u d(v f r+h2nt with a magnitude of which of the following

  10.06: Which of the following statem seeniv (hgum7st 2 4k5 ,8mp(gckuh:8ents is most closely associated with Newton’s c gus7 ieketh285 8ms(h,pg(km4:uvnThird Law of Motion?

  95.06: The reaction force does not cancey /pbcm 1ucd7f9b 52txl the action force because:

  14.14: A box rests on the floor of an elevator. The ele wpjy+ gl(6x.0k5wh -yac:svd vator is accelerating upward. Which one of the following choices best represents the l dpwcsx6g0ay: jykh.v w+(-5Newton’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 co4eo(7akk(rj)b7ff,x wxd+w5gd hc 3 snstant speed. Which onghddb a4o3ewsjf((k x x5+fcr,7)w7ke 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 air ubqrpg fx ),5ao*28 pitcher with a speed of 35 m/s. The batterswings and hits the ball. The magnitude of the force that the ball exu 8qp2r) fo*xgai5 b,rerts on the bat is always

  11.13: A physics book sits at rest on a table. On top of therwu*:s 9wy (vb *dua1u book is a calculator, also at rest. Which one of the following choices is the Newton’s Third Law pair force to the force thatsuy(9 dw1 u*bv*uwar: the table exerts on the book?

  05.06: The students in a Physics I class were in lab conl2p co mz6-* w;kmes:jducting an experiment related to Newton's Second Law. The collec-p*ez kmw mc 6ol:;js2ted data were displayed on the graph at the right. From this graph, what conclusions can the students make?

  99.03: If the net force oq(2nntlttw62 ya*j9wxy3 c ;ij io 7:tn an object were doubled while at the same time the mass oyj22wy; c*t twt:i(ntan 97 6ilxq3jof the object was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly fohn8r bs*xs( ika ;()from rest to a speed of 20nxao;r(f(s)ib 8k *h s m/s in 10s. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the r;mco *rj zvghjusty0;k6 . ;g4oad. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the trailer arsz4kgygctu 6o* m;h0. j;vj;pplies on the tractor is

  99.16: Which of the following prin pu-dts/)9ff4ilt,bn--)ro v s, dmufciples best explains why large tractor-trailer)s-9v,o ffdn 4 i-)bl-/fru mtdpust, trucks generally accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a fr d*tnb,c-n 0:t0xvymz ictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statem0ct*txd v,0 :-ynznbment describes the subsequent motion?

  00.13: An object near the surface of tv 3pl:oy9jw0l e y;ua,he earth with a weight of 100 newtons is ac,3je0p9:vwayy uoll ;celerated 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 constant p0 yp 9rpc/ nwz44v-yjforce of /0nyj-p rvzc p y94p4w2400 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 slides across a rou,g .nzakrj6l;p16k95s vdxa i i3vg-ggh horizontal floor before coming to rest. The frictional force acting on the block is 3.0 N. How far does the block slide before nixk;a3r, k1a l5.zg-isg jpg9vd6 v6coming to rest?

  95.38: A block with initial velocity 4.0 m/s slides 8.0 m acroh28iocgj a,dy( sf6*sx y bf*8 cy4hf+ss a rough horizontal floor before coming to rest. The coefficienj2b,ihc8+86*hffdyg 4 sfoy(scy xa*t of friction is:

  09.21: A 20.0 kg box remains at remb , mj/- cfe7spq19utst on a horizontal surface while a person pushes directly to the right on the e-mp7s fmtbc/q19,u jbox 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 o ole+n. 4sv/3itzbux+n a horizontal surface. The block travels a distance of 12.0 m during the slide. Which one of the f/blx+i eu z+s4tovn .3ollowing 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 witbf, c- ka*mph5h its brakes locked. It then hits dry p a,*b-k5mfh cpavement 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 mass of 2m, it would have skidded a distance of

  00.22: A car of mass m slides across a bywx;q 8u6 *r- emk3.bu0udhbpatch of ice at a speed v with its brakes locked. It then hits dry paveu kb yue8*b w. rdxm-0qb;u6h3ment 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)n3ho,4c w c xyeag8m. the car's brakes and skidding to gcc n w4,. oe8xyha3m)a stop. How far would the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully cv-tlmb:twrj j 8 )n:2dontrol each of the following devices. Which of -n lwjttv)b:mjrd 28: 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 newtonst,ye ng/n40hi is 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36 m/s nearehnyn,g04 i/ t the surface of the Earth at takeoff?

  07.21: A box slides to the right across a horizon(tqp0x 4e8+ is i 6onv6qngkv+tal 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 the right, rank the sizes of these three forces exerted x6pgq+iv n8e6 ov i04 q(tks+non the box.

  02.27: The diagram bezi 0,uiwl, +v1jgpu wx2r*/ xilow shows three roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start fromjwviu0x,lgr,*+ ui/wp zx i21 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 s y2x 6m+d2cptgma8h 1nhows three roller coaster tracks of equal length. Assume that on all tracks the roller coaste6t1am+x2n dcg8 2y hmpr 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 cae*nsxh yz7:n- rtrolls frictionlessly along the curved track from point A to point C under the influence of gravity. What y7:xe n*-snzh would be the direction of the cart's acceleration at point

  02.40: A box with a mass of 50 kg is dragged acrd(5r f6txauf hm+q die7y5c/4oss 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 ki axuf /fmi5 q6dthr(c4y7 ed+5netic 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 pushed against a wall by a 100 N f/a/fehmqnsp4 ja+ d)7 orce as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of static friction is 0.50. What is true of th4pm//e) j h+dsnf qa7ae friction acting on the block after a time of 1 second?

  05.10: A homeowner pushes a lawn mower across a horizontal patoo 4 sntlk+h5/yhx* b/ch of grass with a constant speed by applying a force P. The arrows in the diagram correctly indicate oyl5*x/+ n tkbs4h/hothe 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 crateq* bnbk p;t *r4q(bz(i on a table. Neither is moving. Which of the following statements concerning this situatii qb;kbb4p(qr ztn( **on is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleig +kw7*2p5tf( gh cddivh is pulled up a hill with an increasing speed. The crate is not fastened c7g wp(i k*fv2hdd+t5 down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?