99.36: What happens to the inertia of an8m yth ,azj5kt1g anf;2+5 prc x9p(pj object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not depend on the quant ji,r1chrbut13jk1x y 0vts9, ,p3tj eity of matter present. Whictc t3pv1e x93u h0ri,jbsjk1 y, r1jt,h of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume q*aqkmo,c;kai++m w (ft a1hc i(z, 3hthe Earth has massmt,iiqkq;h1h+cmo(*wk z3 + a f(ac,a $5.98 \times 10^{24} \; kg$ 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 fallln(:3yvbd axf8tm*. l near the surface of the Earth. What is the magnitude of the gravitational force acting on the earth by thex myan.fvbd8 (l3tl* : sphere? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s vel5-f2l b j n9(hsh.3kswx u:zzvocity to increase while its acceleration decreaseswu (v5 ln.xhjzhz -s 93bkf2:s?

  00.11: A certain particle undervfj1swso2r.-2 4jms wgoes erratic motion. At every point in its motion, the dv w1w2 m2ss.sjo-4frjirection of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string held by a person. fd0+:wno2: y5 xuwj bw5nfnq7 The person pulls on the string uniformly accelerating the5uwnjbno5 :2:+ndf7 wwqx yf0 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 following situations is the neqo5/py3 u3rs89r )ycvz:/vr r-iaur i t force constantly zero on qiizvuvr9r:cyrr)3/u-8 /3soay 5p rthe object?

  13.28: An object is in free fall close to (b2xs fw;2ek sthe ground. A person intervenes and slows the object uniformly tows;2ebs f(xk 2 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 gravity is g.

  98.03: An object in equilibrieaz7 , 0b)x 3kj5 2su6zbcrxcjum has three forces, F1 of 30 N, F2 of 50 N, and F3 of sj )ka0uzx 572be,ccb 6r3xjz 70 N, acting on it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newga1,9uvg.pe jqq:m9c) i x 1gxtons can be combine to form a resultant wm1:,uq9ipx1. j )cx q9ggegavith a magnitude of which of the following

  10.06: Which of the following statements is most clos(g /6/w 447xzc0psy hxsxoxde ely associated with Newton’s Thi6xxoy/ 074zhgpe ( cwdx/xs s4rd Law of Motion?

  95.06: The reaction force does not cancel the actioneq d +pm/qs; e9 w,)yp+3gdgkl force because:

  14.14: A box rests on the floor of an elevator. The elevator is4kre tou 1phocc2/r0 * accelerating upward. Which one of the following choiceurhe2krtc * p1oo c/40s 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 ai4j w zr98stplx;nc /i,r with constant speed. Which one of the follsj;,p ilx4z c8t 9/nwrowing 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 a pitcher wi1 tstsrz*vyaj8cf2 r)o9 :j7xth a speed of 35 m/s. The batterswings and hits the ball. The magnitude of the force that the ball exerts on the bat is always)azt*8cs 1jvo2y tj r97xfs:r

  11.13: A physics book sits at rest on a table. On top of the book is a calcul .gwefz.ry f 0dta54; j.tvi6k9ojkb0ator, also at rest. Which one of the following choi jbgyvjteofr .9df6. 0 0k5twzki;4a .ces 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 ha b7a0yie91iclass were in lab conducting an experiment related to Newton's Second Law. The cobae7i9i 1hya0 llected 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 doubledw r.yw ps;fr*q:scu;h1)xji fu,n0 o* while at the same time the mass of the object was hpcj hs0 snx . *y;rqw*,i)w:;u1ufof ralved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated unim-an)io smpr 63 81b:eod+wvn n,qh0m formly from rest to a speed o1mq,s:w -)0 +dbaeinhnp 6r o n38momvf 20 m/s in 10s. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The0(7pweugi8 9;tkt n7 (lf tikm mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the forcmf07g(it n;p8 te7i9 k(t ukwle that the trailer applies on the tractor is

  99.16: Which of the following principles best explar1- m,+) kbvq)roshr ains why large tractor-trailer trucks generally accelerate much more1qr )+rsh) a,bkmrov - slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a) jt0+n f y38 t)fimwh8xmj:bnav6/rj 2 kilogram ball, giving the ballvn t3 h)bf/mj8x wj)+mj0ty68 i:r fan a velocity of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface of the earth with a weight of 100 newtons is t33y7qlommt j-a kivu2 a0p76acceleratqo3a2 -mu77at ivpym63l 0j kted 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 force s0xj -,t9jy f/l7pffsof 2400 N. What is the speed of the car 8.0 s after beginf7pxjftls- y fj,/90s ning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slid5y q/6zflrtd; vzk/b: vptp7:1.g fsoes across a rough horizontal floor before coming to rest. The frictional force acting on the block is 3.0 N. How z ffo bv61.vrp7 y/; :/dkzqtpgtl:s5far does the block slide before coming to rest?

  95.38: A block with initial velocita 2wuf :drnkuwq1(d,hf*s8 k/y 4.0 m/s slides 8.0 m across a rough horizontal floor before coming to rest. The coeffiuh d 2/81kfw:*n,uw qd rs(kafcient of friction is:

  09.21: A 20.0 kg box remains at rest on a2r r6l l3mpm+w horizontal surface while a person pushes directly to the right on the box with a force of 60N. The coefficient of kineticl3mw2l 6 rr+mp 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 7x5vxas) m7a2rdabq( uniformly to rest on a horizontal surfar2m5x d(s 7qa va)b7xace. The 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 speed v m78f7cdc w292 l) t2av lxjs(+f1ge wga3smc zwith its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficiea28s ml21dc2awcjf flc7 ) w+tgvg3 zxs7(m 9ent 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 brakndq/sr)qw g6 w67r6b des locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kin6bd6)r/w r7qdsq 6w ngetic 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 /6dx5ej)0odolk m g;h emergency stop by slamming on the car's brakes and skidding to a stop. Howd koo;g/)0xhem5j6 dl far would the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully contrw-oq+ yjb5qkh)j i rkt5(-i ee(n0(z wol each of the following devices. Which of)-ibn ree((+jw5zq(k w5-h k yqo0ijt 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 newtons is 24000 nef ;5ad)buk hr0wtons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36 m/s near tuab h;5k)fr0dhe surface of the Earth at takeoff?

  07.21: A box slides to the right across a horizontal floor. A person called bgt( mn0) yy4jTed exerts a force T to the right on the box. A person called Mario exerts gy4( j)mnb t0ya 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 threcwt jt f.7* 8,b*ewpfdd 2jrs(e roller coaster tracks of equal length. Assume 7 .8 d*w*tej,ff(d2jw rcp stbthat on all tracks the roller coaster 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 equal lengthq94;qgpc5gmnn/; sh8y nikw 1 . Assume that on all tracks the ro;i;nqsnwgn5/ gy9 q 1m48pckh ller coaster 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 cartrolls frictionlessly along the curved trac hi5c;,:euyi+yx rwo:k from point A to point C under the influence of gravity. What would b,xi:i ec5 ;woy+:hr uye 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 ropedn: oig,*w*jdyf6t r9 which makes an angle of 300 with the horizontal. Which of the following would be closest to the coefficient ofj6dr *,dn 9of* yiwtg: 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 againstdz6i mx.6spgtp e )9d1 a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of static friction is 0.50. What i gd6 )mppi196te.dzx ss true of the friction acting on the block after a time of 1 second?

  05.10: A homeowner pushes a lawn mc5s4:dlfe j .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 m:csjf .e4 mdl5ower. 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. Neith7r7vm h;lrvziy bws c,qa*6.-er is moving. Which of the following statements concerning this situati c vsr-i;7wz7qrb m ,la6*vyh.on is CORRECT?

  06.15: A crate of toys remains at rest o/ 6cad bc .qsfy+e-n-bn a sleigh as the sleigh is pulled up a hill with an increasing speed. The crate i + .ndaycbq/efs c--b6s not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?