99.36: What happens to 7.-(5 01v(5l tgiq caxchdlnwzc w6zhthe inertia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not depend on3s3xcjf qhdv f:/m;x3 the quantity of matter present. Which of the following properties is NOT an intrinsic 3hcx fdf3sx m3: jvq;/property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume the Earth hawo 6.vndt,b 95r jmr*ks mass r 9nwjv6.bk5tom ,*d r $5.98 \times 10^{24} \; kg$ 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 surfa)u kyov5pvhotuk9/ u y;,1pv +ce of the Earth. What is the magnitude of the gravitational force acting on the eary9v,;kk p/t5uvo+1uu p)yvoh th by the sphere? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to increa iafr j/k(c;q5og.b j.se while its acceleration d rfka/jqi.b .5jgo; (cecreases?

  00.11: A certain particle undv x 9husn-c9pgb-w51q g.:sv 97rwcp iergoes erratic motion. At every point in its motion, the direction of the particle’s moment1-:.c59gp ib9pwn 9gs qhu swc-v7 vrxum is ALWAYS

  17.14: A block is suspended in the air at the end vzu /5r1 zkipw:md s;a, /9s.w p:zadaof a string held by a person. The person pulls on the sz;m5z:/ar1vdp /ks pzw sa:da. ui,9w tring 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 on the block?

  07.18: In which one of t1 ok p v(q-cih/okra56he following situations is the net force constantly zero ok1 6 oqkr(op5acivh/-n the object?

  13.28: An object is in free fall close to the ground. A person i9yqmk1 mun*xwy6 1 ek+ntervenes 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 m uwke+61m1kq xyny9*the magnitude of the acceleration from gravity is g.

  98.03: An object in equili9t; heangwm7v;2 2y-dsgazd-brium has three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on de-2gzh a;g y7m;sn9twd2v -ait. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force o;13. il w3zy ca-tisvdj5cq)uf 10 newtons can be combine to form a resultant with a magnitude of which of thu3qzs a1cl;y-ji5t i w).3c dve following

  10.06: Which of the following statements is most closely asso(ejsxp.f lcq z9ja,7- ciated with Newton’s Third Law of 7, fl9jceszqjax.p- (Motion?

  95.06: The reaction force doesy5c50x c f f3znnr1sxb e;9ty, not cancel the action force because:

  14.14: A box rests on the floor of an elevator. The elevator is accelerating*skyz +zsg.2h upward. Which one of the following choices best represent.k2gsyz+s hz *s 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 jt is1h :ps42bthe air with constant speed. Which one of the following choices ci 1 2pbtj4ssh:orrectly 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 wi q (-hrog2fml.th a speed of 35 m/s. The batterswings and hits the ball. The magnitude of the force that the ball.2 rohgfl-(m q exerts on the bat is always

  11.13: A physics book sits at rest on a table. On bk.dftba2 8p3r j 8es3u+eik0top of the book is a calculator, also at rest. Which one of the following choices is the Newton’s Third Law pai.ts + 88p b3 jbfuiek3a2e0drkr force to the force that the table exerts on the book?

  05.06: The students in a 5yi*8gh;o c d m0f9 ljcd(46ruxbnwp ua2i39rPhysics I class were in lab conducting an experiment related to Newton's Second Law. The col lij8c;dd(a5u9r36iy*hmgxw 4c20b ofr up9 nlected data were displayed on the graph at the right. From this graph, what conclusions can the students make?

  99.03: If the net forco 9owzo(5w kn fl ,4x,lq(:o) 43ilr,gpumxx le on an object were doubled while at the same time the mass of the object was halved,then the acceleration of the owmo4r kqo,zo34 ,(gu ilxl p)(x nlx:95fl wo,bject is

  96.15: A car whose mas1w3 wod 5 mz+kri76svb 1+e8g hu1xhjos is 1500 kg is accelerated uniformly from rest to a speed of 20 m/s in 10s. The magnitude of the gdmo+i5j1 71 wor hhvewx6kbu8z s +31net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass of tj(p;ss:tviija ub;3x;;x 2o whe trailer is 4 times th2bipt;sw:ixj (;x3uova;;s je mass of the tractor. If the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the followin:w ,-0o36h udibsjiomg principles best explains why large tractor-trailer trucks generally accelerate much more slowly that automou,b-6ojwo0im i :d3hsbiles?

  99.19: A 50 kilogram skater at rest on a frictionl6 vq dgdw,e 1vy)ehg+7sh3n.kess rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement describes the subsequent mo3+d.6 hk geh7vdyw sg,e vn1)qtion?

  00.13: An object near the surface ofg( k/r(3my /ep wkrzv5 the earth with a weight of 100 newtons is accelerated am/3kkr/ep (5zgyr (wv t $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated from resg n2n4j3qw m.dt by a constant force of 2400 N. What is the speed of the car 8.0 s after beginninq njmndg34 w.2g?

  98.32: A 3.0-kg block with initia4)om zfvt q+jd e42a7al speed 4.0 m/s slides across a rough horizontal floot7ev)q mzadfjo4a24 + r 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?

  95.38: A block with initial velocity 4.0 m/s slides 8.0 m across aqs6b7wjs e h0nhs3:+a rough horizontal floor before coming to rest. The coefficq h+ :3e0wahs jnsbs76ient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a per4 2hru rwqr/t-gf6l4ison pushes directly to the right on the box with a force of 60N. The coefficient of kinetic friction between the bo6gfwq-t/r 4rl2urih4 x 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 m wi8kt0+ll0f/4 * dkmo xdwi6koving at 8 m/s accelerates uniformly to rest on a horizontal surface. Thetidmfw*k xi+d8 lk06lw/k 4o0 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 a0vy6d qt6i8wspeed v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic friction between the tires and the dry road is qiy6d8 avt60w μ .
If the car had a mass of 2m, it would have skidded a distance of

  00.22: A car of mass m slides acros9azmd ibu u(da49e*9r s 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 coefficient of kin *r( 9udaae9zd94ui mbetic 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 bh*k/uvy t, 7vfy slamming on the car's brakes and skidding to a stop.* /v yktf7,huv How far would the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile muq o t:/yq(1uqost carefully control each of the following devices. Whitqqq o :yu(/o1ch of 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 newtoxm;o)nln64wf ns is 24000 newtons. About how much time is needed to increase the rocket ’ speed ffnnomxlw 6; )4rom 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 floor. Asu9z l vn4(85n yc2sdg 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. Given that there is friction f and the box accelerates to the right, rank the sizes of these three fons89yzs42 (gl5d cu nvrces exerted on the box.

  02.27: The diagram below sh3o.sf7j7urtedla ,4 8n0 hmz nows three roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same ele.hos8en370 tj4 7u m rdlza,fnvation 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 s hv94iwj0po*t2 hf:y chows 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 frictionl09jhh4t:i yw *2fovp cessly 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 friclbx clu j.1.:xh .fi(btionlessly along the curved track from point A to point C under the influence of gravity. What wol (ib hxjl.1x:fb.u.c uld 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 ;y)mp c3hsa f/r:u mv2which makes an angle of 300 with the horizontal. Which of the following would be closest to the caf y)p:cmur32m vsh; /oefficient 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 against a wall by amelk4+ 7n+ 0zrsca /(rusi xl( 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while theszax (/u r+(l7lc+snrm k4i0e 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 lawn mower across a 5f*q6 juhz*vdo;i3v3den ga1gl 5stzu u(d( -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 relations among the various force magnitudes, We5jnd5(t uvs6qz3 ;d di-*(g3v1glau*z of uh, f, N, P is CORRECT?

  06.14: A book leans agpyhs+blyd *l58c-0ttqs )pe+-eg o- yainst a crate on a table. Neither is moving. Which of the following statements cdblt5htq c-opy0-ey++g )8p el-s*y soncerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is pt7hgvjp9f q be-py8,*a5( bc uulled up a hill with an increasing speed. The crate is not fastened do* ,(gu98-tavy c qj57hfpbbp ewn to the sleigh. What force is responsible for the crate’s increase in speedup the hill?