99.36: What happens to the ix 4gqv:/ ; *sf,aldjqlnertia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is la ,xb0:3yp czygxx (1one that does not depend on the quantity of matter present. Which of the following properties is NOT an intrinsic pr,(31cxgy y:bap0l zxxoperty?

  04.16: A 20 kg boulder rests on the su(n,k)5ckbro p+-14z ytrzjw(fe j v .zrface of the Earth. Assume the Earth has mazw jy(n5z4 ,ebt)+r zjof1kpc- rv .(kss $5.98 \times 10^{24} \; kg$ 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 fssw (wh0w/r,kw lgdr*u)5wm w;yec (tx-j6q 1all near the surface of the Earth. What is the magnitude of the gravitational force acting on the eacwg)/wysw*s (,5xq1r0 jmh(wdt r6- ;lw ek wurth by the sphere? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to increase while itsm9oy1oq-4zey ngk+u- acceleration decr1zy kgq- 9mne-y4+ooueases?

  00.11: A certain particle undergoes erratic motion. At every point in its motmpr+xh4 5x7sz.u, ykb i6d9i oion, the directionkrxdp 9yms6+. 4uzi,bh5i7 xo of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at thee;+lhoda jr5x /ii, /x end of a string 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 correcd;l,a/x5/ij ieho r+xtly 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 consta+xpp- h /*alk l(lr/rgntly zeroglpx/+ r hp* -ll/kra( on the object?

  13.28: An object is in free fall close to the ground. A person iwvdff q5h./yj20(gm 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 o5h0f2(fd/g vmq .wyijbject 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 fo23eh p5muiq2q rces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitude of the rqi3eqph2m 2 u5esultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 nenpz:k8 9xmc( bk(h4tb ibz(i*wtons can be combine to form a resultant with a magnitude of which of bbchtz9kpmi*k (:n( (zb8x4 ithe following

  10.06: Which of the following statements icky( t0zt55,caz ouf 2s most closely associated with Newton’s Third Lz552a0fuok,t(y ct zc aw of Motion?

  95.06: The reaction force does ,lvyf (qons+mo 89* yiseo90kb6kc4w not cancel the action force because:

  14.14: A box rests on the floor of an elevator. The elevator hl- uqjz,8m7yz1 fb* bis accelerating upward. Which one of the following choices best represents the Newton’s Third Law pa ,qlfm7yh zu 1b8zbj*-ir force to the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls downward through the air with constank 6ik5ysp6ow3a6a(.: abgh qo t speed. Which one of the following choicaasak k yi6oh6wqob(g.53 6p:es correctly describes the Newton’s Third Law pair force to the air resistance acting on the skydiver during the fall?

  06.08: A baseball iscy) o ,6zg,listxtd ,,1 4bsfr thrown by a pitcher with a speed of 35 m/s. The batterswings and hits the ball. The magnitude of the force that the ball exerzd1 y b,)ssgx4fitoc,,l t,6rts on the bat is always

  11.13: A physics book t4t5qj ck (/je rdrck7z1u/dmti72* qsits at rest 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 Lak4d7 cd( jkqtqjc m*r1/ue7i 5/ rtt2zw pair force to the force that the table exerts on the book?

  05.06: The students in a Phfbtt h9h3u3ajc2xfk0i4t4 4q ysics I class were in lab conducting an experiment related to Newton's Second Law. The collected data were displayed on the i4b jft 4hxh0u qt43 c3akf9t2graph at the right. From this graph, what conclusions can the students make?

  99.03: If the net force on an obje jr670x3:u xcu wtfvuz2*nl0 f6q gd5tct were doubled while at the same time the massu0:7f3 x0wu ug rtv5j*xn6dtl26qzc f of the object was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg 4ulth1j(u r jgz spx 1.tj.le8lxm6,4 ucu68m is accelerated uniformly from rest to a speed of 20 m/s in 10s( ljh e16 m.xguxu.jjttu 4c88slm6l1zpru ,4 . The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling,f xsbnu-sy3omh3n7l4or4uebyx , ; 2 down the road. The mass of the trailer is 4 times the mass of the tractor. If the tracto4;o7y-nh2sb,3 34uron,yelms xbf uxr accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explains why large trac ++yky;*hi xsstor-trailer trucks generally accelerate much more slowly that ai+yy h+x ss*;kutomobiles?

  99.19: A 50 kilogram skater at rest on a frictionlex xm q:5xg.c wdx):hnw2 lb/.xss rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement describes the subseqxxn.xlhg) 5:d mx wxq:.b/w2cuent motion?

  00.13: An object near the surface of the earth with a weigbnhb e:,s*5,yc s.7l on0b2ufe:ifl c ht of 100 newtons is acceleran7fu sch2: cfb,5e.,yb:sb0o le inl*ted at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated )xrjv; ,9oz0qa lcq9ummx8:l from rest by a constant force of 2400 N. What is the speed of the car 8.0 s after beginningx8;r0 m,jzmalu) : xqq9lvco9?

  98.32: A 3.0-kg block with initial speed 4.0 m/s s w4p9a/rdki9xat m z55lides across a rough horizontal floor before coming to rest.54zi/t 9ma a9w5kpdxr The frictional force acting 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 across :b*8fpt9fe avb6ddx) a rough horizontal floor before coming to rest. Theebf*8tx 9pd )vf a:bd6 coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface wh mct5fp mk/22)wxuuw vhr0r72 37qjhy ile a person pushes directly to the right on the box with a force of 60N. The coefficient of kinetic friction between the box and t3w7 y2v/xhrtfhw 2 uc5m0u72q)pkmr jhe 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 uniformlyccncup +bwyibd3d.a/ p;9/ 0l to rest on a horizontal surface. The block travels a distance of l 3bpyncw.c9 / 0au;+d cpdib/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 acrond v9hr7pnz+ 8lr*q 6,n ejwi8ss 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 of kinetic friction between the tires and the dry r86 *8vwlhnn9ne r qi,dpjz7+ 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 ay9l j*egoznnda qhlk7/s*q+28 )8cp ncross a patch of ice at a speed v with its brakes locked. It then hits dry pavement an*cg e8a2hdqk qpjl *9+ 8l7zysn )o/nnd 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 slav9 2p tyxs 2w-4jaz+ejmming on the car's brakes and skidding to a stop. H -9t2 +exjz4psayj v2wow far would the car have skidded if it had been traveling twice as fast?

  99.39: The driver ofehvw- +8 gs; );e +4fq2jdpalhw8eokl5ikf c1 an automobile must carefully control each of the following devices. Which of these devices can cause 8;p we v ;l2 ksh f afeicol1)+w8kh5djg+q4e-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 newtonsi a;v3pr pc,n3d /qg ;laq 7c/*fh8i ,i.dpshr 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 d8.;ii7;qn*acg3hfp pq,hri /s, d p3vl/c artakeoff?

  07.21: A box slides to the righ-4m;1 cxljffga -bgmq3 w)ct* 3(mkayt across a horizontal floor. A person called Ted exerts a force T to the rigam -jmwk c g14-;xlg3m* )yb(a3tcffqht 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 length. Assuxs 98 /3p-vufwlq glh0me that on all tracks the roller coaster carts start from rest at the same elevation and m0 h8xvpgqu3fw lsl-9/ oves 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 coast*kob;zs 6dt5w/et6f m- kkao )er tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly over th6)*t/e-ta ; smkzbofk5wkd6 oe 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 f : lm;9ta*wauqzs2)ko rictionlessly along the curved track from point A to point C :;k*a) uowaz q 9stlm2under the influence 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 floorzt)jsezl5*31prlv sh l*tx3. 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 a 250 newton force on the rope is required to move the lzh5s*l.e*)j 3vtlzpxrt1s 3 crate at a constant speed of 20 m/s as shown in the diagram?

  04.40: A 6.0 kg block initially at rest is7zfwi* (0//urcf4 okrvk0megz qn:4s pushed against a wall by a 100 N force as shown. Thecoefficient of kinetic friction is m4w:nf7*ur0ek zi /4rsc0/zf qk ov( g0.30 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 pushp/ep.s( km4caek vl-:es a lawn mower across a horizontal patch of grass with a constvak-eekm4 p/sc (l p.:ant 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 magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans a9 lmcyb / be :4u/yp)pco3jcy9gainst a crate on a table. Neither is moving. Which of the follow/lyb) 9uo9yppj/ec 3myccb4 :ing statements concerning this situation is CORRECT?

  06.15: A crate of toys remains wl 2mqs/3gz0vf lxr61 at rest on a sleigh as the sleigh is pulled up a hi1qg 2mf3xsvlwz6 lr/ 0ll with 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?