99.36: What happens to the inertia of an yo-be h+ce9 gt+m(-cee8rv2 y object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that1xh4vyb) t q+o does not depend on the quantity of matter present. Which of the follow1)xh+y4 tvobq ing properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. ss *o,2-r ryrdi9r :cinip31lAssume the Earth has massni23c*rs :r o91y, l-disrrip $5.98 \times 10^{24} \; kg$ 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 krnd.rsc.r+5 surface of the Earth. What is the magnitude of the gravitationk.rn c5 +rd.rsal 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 increase while its acceleratior/nveq,p(pk - z :4bi(my9 kwsn : v( /(krpiwk4pm9 nqs,y- bzedecreases?

  00.11: A certain particle undergoes erratic motion. At every point in its c :gnchro01r5fc:t 2u bwj2gc hk.6*nmotion, the direction of the partict wuh*6nrgc5bn.rj1:c22cc 0 : foghkle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string held by a person. 2 595 e : sosf4cciuzjqf9hy,hThe person pulls on the string 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 cj5sfz95eco 4h yu,2 q:sfih9on the block?

  07.18: In which one of the following situations is the net force con;hb rzrok/k:: stantly zero ho:; bzrk r:k/on the object?

  13.28: An object is in free fall close 5 hu ek6ck2*(eocem( qlll67 tto the ground. A person 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 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 gra c5ke*l to((l62e leu6khm7qcvity is g.

  98.03: An object in equilibrium has t+w nqm l/*t5c 8gkgnr8hree forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on itw/ckgnt 8nr *8g lq+5m. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force t3 ropqibw1; .of 10 newtons can be combine to form a resultant with a mt;i1qr pb3.woagnitude of which of the following

  10.06: Which of the following stz9yd sh8g-r7yp- mr 3fatements is most closely associated with Newton’s Third Law of Moti-gm ph 8y9r -yrdsf73zon?

  95.06: The reaction forceotbdy d1wfmj s(/8zo.:.s zl, does not cancel the action force because:

  14.14: A box rests on the floor of an elevator. The elevator is acceler:yudzil wm 9sl:7krbne+6.iub-6mz e/xwg0 6ating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational force actinrs ku:m 0wwx6: 6g.n6l ib-umyzz/dl 7+ eieb9g on the box by the Earth?

  15.15: A skydiver falls downward through th5qgwrngzc5(p:6 n ..buw :sgwe air with constant speed. Which one of the following choices correctly describes the Newton’s Thp g5 nbz( ggn5:wwqcwu..6s: rird Law pair force 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. q. .rx5momn,dkw 3. .r )jsytf 9bakv6 The batterswings and hits the ball. The magnitude of the force that the ball exerktryor9mmv) k6..df3bqa.w.js,n 5 x ts on the bat is always

  11.13: A physics book sits at rest on a t0 ev2orixuh,1alq(gii/8:hrable. On top of the book is a calculator, also at rest. Which o2:1i hgv8ilqh ,/rx0u eo(arine 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 I class were i/4bie30+mp +b rj1vk8 q gt6h vxd:boin lab conducting an experiment related to Newton's Second Law. The collected data were displayed on the graph at the right. k ij vp0ov6iqbbm+8x :hd3+tr4 /ebg1From this graph, what conclusions can the students make?

  99.03: If the net force on an object were doubled whilw9c29zq-8lyed5ih 4 b 54gxdvcv9y jce at the same time the mass of the object was halved,then the acceleration of the -9v5jd gxv852bce9w ih44cl9qyzdcyobject is

  96.15: A car whose mass is 1500 kg *pndg ndh2h2: is accelerated uniformly from rest to a speed of 20 m/s in 10s. The magnitude ogh 22ndh:p*nd f the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down 1sk4x e v3mruv,/qys+the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates/,3skruesvy1 x mv 4+q forward, the force that the trailer applies on the tractor is

  99.16: Which of the foll2obx nk)hrh19 owing principles best explains why large tractor-trailer trucks generally accelera)r29nhxo 1kbh te much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink 1vcynrnu z+)mw)jid)0 e)j. sthrows a 2 kilogram ball, giving the ball a velsni0y+.e )) 1n mdwz ruj)j)cvocity of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object neahjx 82mt (3ox /va38rn)ttbdur the surface of the earth with a weight of 100 newtons is accelerated ) brtd tumo32j x (ha8t/83xnvat $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated from rest by a l( sc: a9dl+t* d4osn3/lhig uv7a n9lconstant force of 2400 N. What is the speed of the car 8.0 s after beginnlh:9a9 nogi l73a (lt4cl*+d/uss vdn ing?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a rough horiz8s5h w3xs )t(sup7ktgontal floor before coming to rest. The frictional force acting on the block is 3.0 N. How far does the block slide before coming to rest?ssxt7t 8 3sk gph)(w5u

  95.38: A block with initial vel8vz2hvxrk nu6,g k/g,ocity 4.0 m/s slides 8.0 m across a rough horizontal floor before coming to rest. The coeff, unx2 r8vghv6z,/kg kicient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a person p (7fxgzn* )ojdushes directly to the right on (nfo*j g7dz )xthe 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 uniformm59hyk6w + e5bzl6owa ly to rest on a horizontal surface. The l6z5mkh6 +y5we wab9o block travels a 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 shaf) h2eks04vhn1 t a.peed v with its brakes locked. It then hits dry pavement0)va fhh2.4nhsa e1 tk 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 patch of ice ;f)f*6 jztimaat a speed v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic frictioitf*m ;a fj)z6n 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 ayg+h ci9q)l7qz+(r son emergency stop by slamming on the car's brakes and skidding to a stop. How far wour7l y9 csq (q+ih+ozg)ld 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 b( yfbj,kwv7k:bpi8 4following devices. Which of these devices can cause bkpb,fw:j biy8(7vk4 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 newtl//;8htmvu y 8cyaaym7.dr+ pons 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 Ea 8rp au8l/a 7vym.;my t/hdyc+rth at takeoff?

  07.21: A box slides to the right across a horizontal floor. A person ca,c dd0r l 9 o8/yii 0xdva1m:dpv4.ypvlled 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 ddc yyv9im0lp0 xvd /pv.8r:4 o,iad1exerted on the box.

  02.27: The diagram below shows three roller coaster trr vspvlxg0. 8)acks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly over the tracks to .vlgsr v8x)p0 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 belowf5qk us abqong 310-c2 shows three roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves nqausq1c 3 o5f gbk-02frictionlessly 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 ca brvm,s(6/ evabouq/g. b.io 0rtrolls frictionlessly along the curved track /sbb ,u(/b ri.vo6q mo0a.evgfrom point A 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 the floor by a rope wh+02jyigp9fy b o h80 q.7ut;rmft/g olich makes an angle of 300jqy;. i8/fub0o72tglf 09gorm+ pyth 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 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 agai:,in 0wuvtk)wnst a wall by a 100 N force as shown. Thecoefficient of kinetic friction is ,i wu n):wkv0t0.30 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 pusmsmel4cm)43 d0s(th w hes a lawn 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 necessarily the magnitudes of the various forces on the lawn mower. Which of the following relatiocw s(t4hd4 mm0l e3m)sns among the various force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a cr.+-dmayrx fqy4 qge6.;t1 bz hate on a table. Neither is moving. Which of the following statextghfyezy dm bq;.q+64 . r-1aments concerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleip0mv0 z7qx u0ngh as the sleigh is pulled up a hill with an increasing speed. The crate is not fastened down tox00nzu0 pq7mv the sleigh. What force is responsible for the crate’s increase in speedup the hill?