99.36: What happens to tl 3nir72wzk9gpy x.y 5he inertia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not dependvvd3) mmfbfo31 cn 25v on the quantity o15vo)mmf23v bn f3cv df matter present. Which of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earl c093r7q,zmuyc if.oth. Assume the Earth has masc7cri.lf9, quoy 0mz3s $5.98 \times 10^{24} \; kg$ 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 isp6 nwsvp5b 87t the ma8 v6bsptwpn57gnitude 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 for3bc1lorc z)h7 an object’s velocity to increase while its acceleration decreal zr ch)o173bcses?

  00.11: A certain particle u4am 3p,2. ecm) 9inyhhgwho -andergoes erratic motion. At every point in its motion, the direction of the particle’s momen mgi-ymah9h2heo4c)a wp 3n.,tum is ALWAYS

  17.14: A block is suspended in+c2rbnu-6bw)1v f lnw the air at the 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 - bw rnnulwbv)1 6fc+2the 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 cons4:5 o;q 2kbo hhbngca6tantly zero on 6h ob5cq;ago2 hb:n4 kthe object?

  13.28: An object is in free fall close to the ground. A person intervenes k6e+nfxkov,at31j8 (bb p,bt and slows the object uniformly to rest. Which one of the following statements must be true about the magnitude of the acceleration of1e p+6kb3f, obk v8n(,xta tjb 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 of 30 N, F2 ofb/k d7r)ioi 0lq 1qif/ 50 N, and F3 of 70 N, acting on it. The qoiidb/f 0r /i7)1l qkmagnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons andw,tr,4fd sw2 t a force of 10 newtons can be combine to form a resultant with,f,t wt42rswd a magnitude of which of the following

  10.06: Which of the following statements is most closely assoo-v35k i eyn82ysul)mciated with Newton’s Third Law of Mo-sykn5i83ev2oy) mu ltion?

  95.06: The reaction force does not cancel the action force becaq,4 vn f-ia3x ;a;t,d6ghdmtruse:

  14.14: A box rests on the floor of an elevator. The elevator is.p b 8:cqtq;cy accelerating upwarqc 8t.yq;:cpbd. 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 Earth?

  15.15: A skydiver falls downward through + sk9nx:3rwvur 77pncthe air with constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance acting ov7u:rnr+ k3 79wncp sxn the skydiver during the fall?

  06.08: A baseball is thrown by a pitcher with a speed of vm;d3h s+zfvnhp;:e+ 35 m/s. The batterswings and hits the ball. The magnitude of the foz;vp+f;: h3en+dhsmv rce that the ball exerts on the bat is always

  11.13: A physics book sits at r.u p: n qxi0vkp:2jmq, (j:tgtest 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 Law pair force to the force that the table exerts on the booktk(ngip ,0xmqujqt j2p. ::v :?

  05.06: The students in a Physicsc,gv)/k1 t mlp I class were in lab conducting an experiment related to ,tpk1v/)lg cm Newton's Second Law. The collected data were displayed on the graph at the right. From this graph, what conclusions can the students make?

  99.03: If the net force on an object were doubled while at the same ev(wcbtqs0(px ne +)+time the mass of the object was halved,then the acceleration of twt)pnxsbee0v(c +q+ ( he object is

  96.15: A car whose mass is 1500 kg is accelerated unifor ,( mbu2ium4fbmly from rest to a speed of 20 m/s in 10s. The magnitude of the net force accelerating the2m(m bui, f4bu car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass of the trfxw,-+ow wb w-+mhl9ch3 *s8s myxu /railer is 4 times the mass of the tractor. If the tractor accelerates forward, the w o,*+b8msfmy suc-w /hl+ h3-xrw9xwforce that the trailer applies on the tractor is

  99.16: Which of the following principles best explains why large tractor-trai1r-a6/ dozpgr*8gq oeler trucks gene/d - o61qg*o epr8rgazrally accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest s1kr:i epx2wi-q)3qx h,5lc j on a frictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 he-lx q2 jkri: xwqci )sp35,1m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface of the earth -h7tjfuz ct+:y*/j jon97c kawith a weight of 100 newtons is accj*tc ho7fykuj n/+z:7c-jt a 9elerated 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 forceco;tst krll9;(t/a x9 f2 gqe j:qq2i- of 2400 N. What is the speed oft;sqaqro 9;t2 gc ft/: ij9-(elqk2xl the car 8.0 s after beginning?

  98.32: A 3.0-kg block with init9,rk ol wggb4)ial speed 4.0 m/s slides across a rough horizontal floor before coming to rest. The frictional force acti4r k)gb, o9wlgng 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- o4h bo,qd2vs 8.0 m across a rough horizontal floor before coming to rest. The coefficient of fb2 v-dqoh4, soriction is:

  09.21: A 20.0 kg box r; aojk:32ku 8:hgin pjemains at rest on a horizontal surface while a person pushes directly to the rigik2:nkpj g ajo;3 8u:hht on 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 initiam9.yf2hgz xa /g ;um0wlly moving at 8 m/s accelerates uniformly 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 theygzxwf m20 m;.ga9u/ h coefficient of kinetic friction between the surface and the block?

  00.21: A car of mass m slides across a patch of ia1qic*8* gp v+cwy *oace 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 t*ig *1+p*cvyca o8a wqhe 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 ot( .mbc81w5ee9,gc xmk js+oof ice at a speed v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient ebc8 sewt.,xm5 jocg19m+k( oof 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 carsprce+n mp6v,ypx 358 makes an emergency stop by slamming on the car's brakes and skidding to a stop. Hove,+56 r p mcp8nxpsy3w far would the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully control each of the followings sho tb52qus (fz* yk.(ys+0f devices. Which k* f5soq y+y .zss0(s 2fhu(tbof 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 lmz8( dj2( k3wde6zedwith a weight of 15000 newtons is 24000 newtons. About how much time is needed z (dmeldze3(jw826kd to 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 to the right across a horizontal p 7vtml(9 e/8 mytayy8floor. 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. Giveetp m9(8ml7ty 8/avyyn 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 equafsx kk.lr )+b7l length. Assume that on all tracks the roller coxkl7s.f bkr+)aster 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 shows three roller coaster tracks of w/ol7gc8.ahbequal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly over the tra8whb a g/l.o7ccks 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 c3 xjo)bul/ubu:;df/ gurved track from point bgd;fx3 lb/ u j):uo/uA to point C under 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 thi op0q.u.qr9rcm 3 :hae 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 a 250 newton force on the :0a. 3m.u rqq rpochi9rope 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 againkecyn .k9:x; wa fqh8;st a wall by a 100 N force as shown. Thecoefficient :kqx9w h.k8a cn e;yf;of kinetic friction 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 lo,+ e unpgp*ujm/9u9f awn mower across 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 nec9fou/g+pu*mn9p,eu j essarily 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. Neither is moviq/jd0llf k.*8(rcff zl p(o8w4n+ kzfng. Which of the following statements concerning this sitf+z(z ocp/840 rjq kldf fw*8.(lkn fluation is CORRECT?

  06.15: A crate of toys remains at rr2900 ssgn)eq(twcko est 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 the crate’s i ct)2q ews0kgo rn90(sncrease in speedup the hill?