99.36: What happens to the inerb78f1vjo5r zdl;0 cgn tia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one thav-g paxp4( uv9t does not depend on the quantity of matter present. Which of the following properties i(p p -vg9uvxa4s NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the st ); psvcx/vk:(1 ohxgurface of the Earth. Assume the Earth has mass :h gt/;xs1kv cvop)(x $5.98 \times 10^{24} \; kg$ 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,sz2f:otf3yco1o5 z h fall near the surface of the Earth. What is the magnitude of the gravitational force acting on the earth by the sphere? The Earth m osooh13cy,2zzf: t5fass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity k 3lkaocnuq ;y/z24 *vto increase while its acceleration decreacn4 3lzku qo/a2;ykv*ses?

  00.11: A certain particle undera.q0/9 u kxqvdgoes erratic motion. At every point in its motion, the dirv0/xauq .q9d kection of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the ent:a;ty6 xs3(pu q8bn yd of a string held by a person. The 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 xun 38pba6q :t(s yty;to the force of the string on the block?

  07.18: In which one of the follonjwx-uiayjw;m,0 t * cl70fcott-26hwing situations is the net force constantly zero on the ol, -0jyt72wjcn6c0 uaxf*;h -t m iwotbject?

  13.28: An object is in free fall clohx xr*5ibpt 7u5eo*2g se to the ground. A person intervenes and slows the object uniformly to rest. Which one of the following statements must be true about the magnitude oh p tuix52b7g*ex5r*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 equi1dibt5-k m g)flibrium has three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting ok m)tfb-1g di5n it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons cv6x 2+h ic;gqh yveao/w*8 fepq k;f:4an be combine to form a result: ;y /fcwhq;*vqgh fvak x8oe4p+2 6ieant with a magnitude of which of the following

  10.06: Which of the following statements is most closel b)0p )/2d4 vpwsuo0ka ciby9ey associated with Newton’s Third Law of Motiupka)e b/iw)0pv co yd2bs904 on?

  95.06: The reaction force does not cancel the action force h. 1xhu+eek*f because:

  14.14: A box rests on the floor of an elevator. The elevator is acceleratio5* nc.qbeca/m rbi5mw. p73nng upward. Which one of5pow a.7qmn*/imc.e3bb5 n cr the following choices 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 air;d4(y w:ept0ewvj ,gp with constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance actingey :ppejv (4 d0t;wgw, on the skydiver during the fall?

  06.08: A baseball is thrown by a pitcher with a speed of 35 m/s. b m3h0 v8iim1l5ro;vk The batterswings and hits the ball. The magnitude of the force that the ball exr l35v18ikm0o ibv;m herts on the bat is always

  11.13: A physics book sitsx /wr,x //jcf+( iculc at rest on a table. On top of the book is a calculator, also at rest. Which one of the following choices is the Newton’s Third Law pair force to the force that the table exerts /ci (l+c/wx r /xujfc,on the book?

  05.06: The students in a Physicslt,wo 0 pmdf4z* q;9fr I class were in lab conducting an experiment related to Newton's Second Law. The collected data were displayed on the graph atl;dfq9ofptr *0m ,z4 w the right. From this graph, what conclusions can the students make?

  99.03: If the net force on an objekoj2*uud2 olw ,qunt8*l4r(m ct were doubled while at the same time the mass of the olk,8o4 uj u*nt2d(qum l* 2wrobject was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerateogwo(1mc 9f dv:,d8t wd uniformly from rest to a speed of 20 m/s in 10s. The magnim1f8t w,dd9( gwcoov :tude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mk+n z4b q/;mclass of the trailer is 4 times the mass of the tractor. If the tractor a/mz4;cnbl +qk ccelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explains why larg/b5 wr)xj fwl.e tractor-trailer trucks ge) lf5wxbrw./j nerally accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a fr)r.q* r:uwnt eo 8aw xu*a1hq9ictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10 8ewt9r1oa qhn *ux.:q rwua)*.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface of the earth with a weigtbuz( c hjblasv*7x46 o)2h w/ht of 100 newtons is accelerated ab v62bz jut(wh/)cohla4 x*7s 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 rest by a consy+tti7b2r3q4 oftxmbh * +b9h tant force of 2400 N. What is the speed of the car 8.0 b 2ih+ oq4 hrb9t3xtmy bf+t*7s after beginning?

  98.32: A 3.0-kg block (qq(fs0ts,m*to6zeo with initial speed 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 f,em*s o(o0zq6 sf tqt(ar does the block slide before coming to rest?

  95.38: A block with initial velocity 4.0 m/s slides 8.0 m across a rough horizoc8)q1 .z7tewes xgyt .ntal floor before coming to s1zgct 8)etx. 7ew.q yrest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a quu* u 4*a1h5ybgf*oz*ik f)fperson pushes directly to the right on the box with a force of 60N. The coefficient of kinetic frict 4ui*ba hkqyu ff*)fz*o5u1g*ion 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 uniformly to r4 vfzh/m* .vytest on a horizontal surface. The block travels a dihmz/.v f4vty *stance 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 with-mebih; -5t(eudskz1 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 μ . h 1 sume-d;e5(tz bik-
If the car had a mass of 2m, it would have skidded a distance of

  00.22: A car of mass m slides ac0bool*hw fz a7o,e+4 )mifqe:ross 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 coefwffbeela 0zmo: q4h7)io,o *+ficient 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 by s vigoeee gk5nl ;0;:6meq10 kglamming on the car's brakes and skidding to a stop. How far would thg0e5e1m ; eenk;0o6 lqg vig:ke car have skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully control each of t ae+wd gk/sta. a:a8z9lz8bi7 he following devices. Which of these deviceie/+7azw.sbz:tg9 8 lkaad8 a s 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 drq 1 c(3vtnf-mzh.- su;n7bb24000 newtons. Avrbh1. ;s3u7 -tbcf -qnnzmd(bout 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 right across a horizonta33e to.l*:wnyn5r-p qu+ j fayl floor. A 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. G-ua5o typf3n: yn*q3+wl re.j iven 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 coaster tvuru27-+phgxwo +htymi n:k:h;+wq5 racks of equal length. Assume that on all tracks the roller coaster carts start from rest at tp ktm-u2: +gy+q w:hn; ho i+u7hvrwx5he 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 lengt fjade5x : apga)4xg86h. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly over the x86g aef4xaj)5gda:p 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 frictionless7u h,*-w)2 e4munjf(zpmcepk ly along the curved track from point A to point C under the influence of gravity. Whappum-wkh74n z , 2fmeej(u)c* t would be the direction of the cart's acceleration at point

  02.40: A box with a mass of u4 piuj63xsm0 g5fv(a50 kg is dragged across the floor by a rope which makes an angle of 300 with the horizontal. Wh0uuxf 6 jv4pmsg a5i(3ich 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 yueuwz y-r3n -m3xb:+ pushed against a wall by a 100 N force as shown. Thecoefficient o3z nym-eb+u: -w3xyruf 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 pushes a lawn mowerw12 fnx : hk 1mrc3.8i.2p es/uagjqbr across a horizontal patch of grass with a constant speed by applying a force P. The arrows in the diagram correct ufagpcw x.n 1srqk8:ej1m2i3b r./2hly 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 aq8tdb l:whfl 0/eqg47 crate on a table. Neither is moving. Which of the following statements concerning thislw 8t f:ghe lqd74q0b/ situation is CORRECT?

  06.15: A crate of toys remain g/zsn7y.vtd r9g+ k(is at rest on a sleigh as the sleigh is pulled up a hill with an increasing speed. The crate is not fastene 9rn vs zgk/(y.+gdit7d down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?