99.36: What happens to the inertia of an obje v1 2azcucxk(8ct when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not depend on th nhqxw)4go5l*e quantity of matter preo n4*wghl5)xqsent. Which of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume tahax0. dw,uvjb r,e5;he Earth has masj 5b.a xv0awdh, ;u,ers $5.98 \times 10^{24} \; kg$ 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 fagbut+o+- 8uwu4 d*nzpll near the surface of the Earth. What is the magnitude of the gravitational force actingd+u8*gpzun- wout+4b 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 acceleratixjt fq/c)2 /dkon decref/ tdcq2 xk)/jases?

  00.11: A certain particle undergoes erratic motion. At every poinec0 x +bb2r5s m*ozn:kt in its motion, the direction of the particle’s momentum is :*2 xn5m0c+ebs z brokALWAYS

  17.14: A block is suspended in the axl jbi) s++g(c5 ynio+ir at the end of a string held by a person. The person pulls on the string uniformly accelerating the blockn5ylcs+i g+ o+b(j)ix 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 is48yks(j 31zz dlxn/lv the net force constantly zero/zv nk(s 1j3yxd4 lz8l on the object?

  13.28: An object is in free fall close to the ground. A person intervsg e) y4dmq,(ik7o/ ri+f:hkd enes and slows the object uniformlyrok(ki)sdd,+ qh:y7/e4fg im 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 gravity is g.

  98.03: An object in equilibrium has three forcesmucl ;bda-t zudv:0h4*ej4r /z) yo2t, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitude of the resultant oztja0;z)ceoyu 24 l d:duv*t h/r-bm4fF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can be combine to fo y.13zx+zsk ujrm a resultant with a magnitude of which of the followingxu yzz3sk 1.+j

  10.06: Which of the following statements is most closely associ;r* p.kkhl/ w)3 kgwmlated with Newton’s Third Lag)lrhkw k l; w/p.3m*kw of Motion?

  95.06: The reaction force does not cancel the action forc k/kw qo5xo2an+z +*ofe because:

  14.14: A box rests on the floor of an elwu l ;kl-;rgx8evator. The elevator is accelerating upward. Which one of the following choices be k u8;wgr;ll-xst 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 th s k1-0n wljv-p5dxri7e air with constant speed. Which one of the following choices correctly ds0r5wj-- 1v p7lkidnxescribes the Newton’s Third Law pair force to the air resistance acting on the skydiver during the fall?

  06.08: A baseball is throc ).i yosta/+hwo w1 4.ifdrz-wn by a pitcher with a speed of 35 m/s. The batterswings and hits the ball. The magnitude of the force that cw-y1.fi/dw ozr. a4+ iso)htthe ball exerts on the bat is always

  11.13: A physics book sits at rest on a table. On top of the book is 2oe km t:ckk;.a calculator, also at rest. Which one of the following choices is the Newton’s Third Law pair force to th k kt:okc.e;2me force that the table exerts on the book?

  05.06: The students in a Physics I class were in lab conducting an exj apqpq9 .y79k 1s*ed:6jbpaq periment related to Newton's Second Law. The collesy 76 qkq1ba *d.ppqp:j9jae9cted 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 time the m5oi7yyg4*4+i) y:oibhdd s plass of the object was halved,then the accelerat*7:bg+pyi)ohios d4 4 ylidy5 ion of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly from rest to4m*onb eso :a6 a speed of 20 m/s in 10s. The magnitude of the nee:46ban os o*mt force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the roadz:l64pac nxqc6) if8zr0cl i4. The mass of the trailer is 4 times the mass of the tc xz)p0i4i8can: qlz6l4rfc6 ractor. If the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explains why layab 0v6ma9qt*rge tractor-trailer trucks generally accelerate much more slowly that automobil9vaa b6qt y*m0es?

  99.19: A 50 kilogram skater at rest on a frictionless rinwgud: +ifmb) 8k throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement describes the subsequent moti+gmd )fbw8:uion?

  00.13: An object near the surface of uua h1ish857q the earth with a weight of 100 newtons is accelera175huiqh8 us ated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg ozm9)njdgw6 .is accelerated from rest by a constant force of 2400 N. What o md gwn)j.96zis 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 roujxyajr hh ussj8:y d,w-ulz;*5l(s01 gh horizontal floor be50 jll:dy8r;zjh- awsshsjyxu,u (*1fore coming to rest. 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 8.8nx-( s ka/l-szud0r l0 m across a rough horizontal floor before coming to rest. The cn-( slxz0dl/- sr8 aukoefficient of friction is:

  09.21: A 20.0 kg box remains at rest on 4vz(6 oj t8nplnoe96lyu 1b4 ma horizontal surface while a person pushes directly to the right on the box with a force of 60N. ljy1 6n8l46e 4otnoz (9bvp muThe 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 atq+;+ ge 00sw-kwulf,ms1q)lecp ivpy m *i/)u 8 m/s accelerates uniformly to rest on a horizontal surface. The block travels a distance of 12.0 m during the slide.s)yk, w/f-)+*q+u1 ;euweppcqm0sm vi ig l0l 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 with its bw de.v(j+(fl9fagr8o rakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic friction (dvo9ffr.g+( 8 aweljbetween 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 wit+v.t 3m z)c -yf)tpvm+amb,dn h its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of ki+ t- dmv),zv t.nf3+cmbm)aypnetic 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 emeawh.8 gr*yce (rgency stop by slamming on the car's brakes and skidding to a stop. How .agw(8cehy r*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 fo:n8.ufm *3f,qi4izzjg (qyeb0 kiml :llowing devices. Which of these devices can cause an acceleif umfi43i*,g:ql:k.z8 zeqnjbym0 (ration in a moving car?
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net force on a2s8;u ei34apmo5r7w 1n jy 9+nb zcmda rocket with a weight of 15000 newtons 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 takeoff?b4753en pj1yi2o8ua ; w+crz md9s mna

  07.21: A box slides to the right across a horizontal floor. A person called Ti hr98e(r8d.iu gd x 8tf17rsved 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 acceleratesih8ufrr t xeg7i( drvds98.18 to the right, rank the sizes of these three forces exerted on the box.

  02.27: The diagram belowgl qr: vb fzf2t7 ib3y)s8:(qs shows three roller coaster tracks of equal length. Assume that on all tracks the roller coaster cartsyfbq73q:gf vs28tsi) :bzl(r 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 coasqd p4 w0l)w+;ef;dgc ster tracks of equal length. Assume that on all tracks the roller coaster cdq ;c+4 )0sldwwpf;g earts 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 al(9tdp62f4ytlkmsk 5sm 1ip l6ong the curved track from point A to point C under the influence of gravity. What wo 6i5s1ly6kk92p tpdmf(4lt msuld 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 r5cr sg n3csyx5 x8.x7cc/sa t(ope which makes an angle of 300 with the horizontal. Which of the following would be closest to the coefficient of kinetic friction between the bc/gsc7cn.x yrxs5(8sx5c t a3 ox 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 uu7l.mx7 t c+jv9ko 36l(ken zforce as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of static friction is 0.50. What is true of the friction acting on thk llcxo37 u7. n(ujez 9v+mtk6e block after a time of 1 second?

  05.10: A homeowner pushes a lawn mower across a horizontal patch of grass winn2n++v r 4y r ddzox+h9xux,)th a constant speed by applying a force P. The arrows in the diagram correctly indicate the directions but not necessav+x) r ,4n2zu+non9rd+xx hd yrily 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 again -s cozt0ynf2r0jt*7j(yyqeykm(3( q st a crate on a table. Neither is moving. Which of the following statements concereysc(o(t*0qr k- 2jyzj f ty(q70y3 nmning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a zdj0 j)5z id.t-g )hmvsleigh as the sleigh is pulled up a hill with an increasing speed. The crate is not 5ith)gjd 0.zz-m j)vd fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?