99.36: What happens to the inertia o c,0r )iu ./y4mltqimdr cl2/of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does mhr/h8d jifn+g4out7/k*-uouonn 53,fiju4 not depend on the quantity of /4/7hti rjhn*8fu3 u5i o,u +fg4nmodk ju- onmatter present. Which of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume the Earth has mj t6r(uolrtgn: k2 3xm+i.)epass 6jr3mgtp 2 (u.k: eo+x)intrl $5.98 \times 10^{24} \; kg$ 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 is f(ud( j1u4j: yvee;puthe magnitudj (ejf(4upuv:1 eu dy;e 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 for an object’s velocity cuapxbiu tcatj9f.x4 789 a48i5b.ic to increase while its acceleration decuaj 447c9 f 9 capiix8iu.tc a85t.bxbreases?

  00.11: A certain particle undergoes erratic motion. At every point in its motion. i a h-8tq.dda8x*ibkxl5h,q, the direction of the particl,5b8kx.. 8tiq dxa-h*diqh ale’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string held by a person.kysuu f-,f6kb (9qu h: The person pulls on the string uniformly accelerating the block upward for a short time. fyu9uk:,6-bh(f kq su 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 iwc hc+0sge h89s the net force constantly zero on thech08 ce9+hswg object?

  13.28: An object is in free fall cl z;hrlaqi 6smjz(/,4wose to the ground. A person intervenes and slows the object uniformly to rest. Which one of the following statemh 4qswz/6 ,l(z ;mirjaents 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 forces, F1 of 30 N, F2 of 50 N)3zmbfr ,6 yjj, and F3 of 70 N, acting on it. The magnitude of the result6mjbj,3fy ) rzant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can be combiner;idi pi/*3 noexp*xj66p3c g to form a resultant with a magnitude of which of the following*ixox jnr* d/ cpgp3e6;6ip3i

  10.06: Which of the following statements is most closely asso7bmqa7t/ubces m 6s 53ciated with Newton’7s em /m5abt76uq 3bscs Third Law of Motion?

  95.06: The reaction force does noh qx2p-x/a(fnt cancel the action force because:

  14.14: A box rests on the floor of an elevator.nin4y. j 7;jcd(j:cc 1q3bnix h4vhw2 The elevator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational force ac .i4cjxw3n7dc( 2:jqv;n j1hybi n4 chting on the box by the Earth?

  15.15: A skydiver falls downward through the air with constant speed. Whi1r hlh,nhcb:31/nvk6bzh n .zch one of the following choices correctly describes the Newh1/ nnn v1k 3z.,lzr:6cbhh bhton’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 with a speed of 35 mm10- p00xg; 4 idkxl;apqa e3mgb2oxh/s. The batterswings and hits the ball. The magnitude of the force that the ball exerts on thexlxkq2;;o-x dppig3hmama00b4e g0 1 bat is always

  11.13: A physics book sits at afzf(o( mzt(fix,ngn8 (fr fh,05 3y mrest on a table. On top of the book is a calculator, also at rest. Which one of the following choic5rx(zf(n,(,( m0fzi 3yo agf8ftfmhn es 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 qgs2s zzy )lb8zg-* a2ht:n hd1/k au6class were in lab conducting an experiment related to Newton's Second Law. The collected data were displayed on the graph at the ri/n8 sk:ab)azgz lsh- z1*6tdyugh 22qght. From this graph, what conclusions can the students make?

  99.03: If the net force on an object were doun;hrr/w .eoynz15j c2v )gl+gbled while at the same time the mass of the object was halved,then the acceleration of the object i;w+oe2.gy )5jrr1/v c glhnzns

  96.15: A car whose mass is 1500 kg is accelerated uniforuqi4ucr ir;3-mly from rest to a speed ouc3 qur4-ri; if 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 rorkem6d8 4uud5ad. The mass of the trailer is 4 times the mass o ur8ukde4d6m5f the tractor. If the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explains whprjds uc 5j:et58 1ya/y large tractor-trailer trucks generally accelerate much more slowly thdj /a5jet5:pc 8ys1 urat automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless-ozs7.q 6pw)y;nmp ol rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s.6zyws 7no)o lpm-qp;. Which statement describes the subsequent motion?

  00.13: An object near the surface of th ai3jpjmb9; g5e earth with a weight of 100 newtons is accelera p;bm3i5j jg9ated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg i92c2. de;u. hwdyr zops accelerated from rest by a constant force of 2400 N. What is the speed of the ca;u 2..y2edocpdr9 zwhr 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed a/yfv:xia-d1 4.0 m/s slides across a rough horizontal floor before coming to rest. The frictional force acting on the block is 3.0 N. How far does the block slidev 1ix:/-yfaa d before coming to rest?

  95.38: A block with initial velocity 4.0 m/s slide f6,p;+h 6s:llimtc ens 8.0 m across a rough horizonta imtp n:l6ehf6,;c+sll floor before coming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on.qtl / a:h6mtl c3oq)j3m 1pvr a horizontal surface while a person pushes directlqpjamo ml3.16h)rvt : tc3/ lqy to the right 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 initially moving at 8 m/s accelerates u z 2-e,vd2kz9)qoijfkniformly to rest on a horizontal surface. The block travels a distance of 12.0 m during the slide. Which one of the following choices k2kqozz2) v ed,-9ijfbest represents the coefficient of kinetic friction between the surface and the block?

  00.21: A car of mass m slides otln/q9 4zc2b across 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 cocl2z b9q4o /ntefficient 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 sqs1t,61-r hedv.y w njlides across a patch of ice at a speed v with its brakes locked. It t,1r1 j6v.q-dhsnweyt hen hits dry pavement 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 speed of 2v, it would have skidded a distance of

  04.32: he driver of a car makes an emergency stop b o6xrt1fd 3g.ty slamming on the car's brakes and skidding to a stop. How fa 1frd6xt.got3 r would the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully con6k9g;5d v1n tyauonb 1trol each of the following devices. Which of these devices can cause an acceleration in a m d1oab159n6yvt ;g unkoving 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 negcm )m,,33dos fxq3 ki-x 9gdiwtons is 24000 newtons. Ab )xkmds3i9m 3d3-xg c,i q,fogout 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?

  07.21: A box slides to the ricoqd l;8w58x nght across a horizontal floor. A person called Ted exerts a force T to the right olwq 8 8cnx5d;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 coas 0atdi5fhxb3a/t-rf- ter tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlesslbt dr-t5-h3a0 x/fia fy 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 threstjh fam7v8a. f;;wvq tdb f05og/3y 5e roller coaster tracks of equal length. Assume that on all wfv; 7o. a s 0vhdbq5 /m3y8tft5f;agjtracks 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 reach the finish first?

  02.29: Assume the rollercoaster cartrolls frictionlessly along the curvilo -wfq*e52 fs-n da9ed track from point A to point C under the influence of gravity. What would be the direction of the f o95-lqwa*d nfis2e-cart's acceleration at point

  02.40: A box with a 1n-vmc o2z38rvze 1g emass of 50 kg is dragged across the 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 rope is required to move the crate at a constant speed of 20 m/s as shown v 2o-gem81cr3zvez1n in the diagram?

  04.40: A 6.0 kg block initially at rest is pushed against a wall byqo2u enbsui9 y)/2 joeh-g2x;xu5 g5 q a 100 N force as g u)5 e2sxb9uqjou2 yegno/i x-qh2; 5shown. Thecoefficient 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 puz+xk:/l 6ccxvshes a lawn mower across a horizontal patch of grass with a constant speed by applying lvx:/xzck+ 6ca 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 against a crate on a table. Neither is moving. Which22:bi(eyd tqtwax87c 60fs:(cj+9gkmfthgm of the following statements concef6e(g 97 +0(gycf:w:sdtbmcqmkxa2tjti h 28rning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is pulled(x.hgsbjz30z.owg *ufl n3 m, up a hill with an incz3.l oh 3 b0mxzu(s .gfgwjn,*reasing speed. The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?