99.36: What happens to the inertia of an object when its o +j;l g3l/vivvelocity is doubled?

  02.14: An intrinsic property of matter is one that does not depend on the quanj3xb8q0sa j0f6hp/ a5 tmiip 1tity of matter present. Which of the following properties is NOT an intrm /16s 0atap3jiq p0x f5ijh8binsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Ass4-*njgnd 0 z9 lcwdj-bume the Earth has man- 0zj-4b wcd d9g*jlnss $5.98 \times 10^{24} \; kg$ 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. Whaa 2pyd5w .w)bat is the magnitude of the gravit) day.w25w apbational 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 :d9x3(f brffb)y8tfkobject’s velocity to increase while its acceleration (f 3by9ftx:fd f)b8krdecreases?

  00.11: A certain particle undergoes erratlewak)oi)lh)7i plf o,(t t43r;+t .o u9ozkcic motion. At every point in its motion, the dio+a ; o 3 llro(fcw4ptuihttk9)).oi7)k e,lzrection of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end o pp(jsq,8z:w0;bb0f )ca2znue -pqd mesc;b4 f a string held by a person. The person pulls on the string uniformly 8, ;m0cbq ze-j esp2 )abupqdz4f :p;(cs b0nwaccelerating 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 the following situations is the nek4r,vu jygf:vkw35 /jt force constantly zero /vg ku5:j,4yr kwvfj3on the object?

  13.28: An object is in free fall closl*hvsn(xo e (+4zurw*6/e m ije 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 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 accelerat(xol+(wj nhzv*s eu m4i *r6/eion from gravity is g.

  98.03: An object in equilibr 1h. icxgw9tn)zkm0 a,ium has three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. ).9hcxt1gnmz0i ak w,The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can be combine to form s,0o5 ;:kd2u:owd gjx pzcd3o a resultant with a magnitude of which of th3d j :uw 5 2ozgox;ps0dc:okd,e following

  10.06: Which of the following statements is mo85g m 5jrj 1rffku6ne+st closely associated with Newton’s T 5kfr fjmju g5e18n6r+hird Law of Motion?

  95.06: The reaction force does not cancel thi;wj.b l2z0hgc7ph ,fe action force because:

  14.14: A box rests on the floor of an elevator. The e-tcvnr5zouz:0 zgw vqo;((, jlevator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational f-oqv n c,( rt0:zjwo5vzzu(g ;orce acting on the box by the Earth?

  15.15: A skydiver falls downward through the air with cons0 juc6/gb gdy3tant speed. Which one of the followu06g d cjg3/ybing 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 s; rlbxf:u wayr6 30-mpitcher with a speed of 35 m/s. The batterswings and hits the ball. The magnitude of the force that the ball rs6m0auw3l;f ybr -:xexerts on the bat is always

  11.13: A physics book sits at rest on a table. On01: q xvx** u(jtddfulnw i,9f 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 on t0xwi f*:9lqf,1d ud(*vjtn xuhe book?

  05.06: The students in a Physics I class were in lab conducting an experimhmn/.bgug29 x2iv+mu4 nj 0eqrc ,xs-ent related to Newton's Second Law. The collected data were displayed on the graph at the right. From this graph, what co s,qn-0 4i2bhu+x.uv /2jen x9mg rmgcnclusions can the students make?

  99.03: If the net force on an object were doubled ngsk bb/(8ts 1while at the same time the mass of the object was halved,then the acceleration g 1b( n8/ktssbof the object is

  96.15: A car whose mass is 1500 kg is accelerate1l*v 0dnln9xsd uniformly from rest to a speed of 20 m/s in 10s. The ma*90 vsdl1nn lxgnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass of thelh6k;8gesv ts8 gwhct8 +j,0t trailer is 4 time8cklh tw8+sgg st v0;ehj6t8, s the mass of 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 why large tractor-traq5-/i dth vw; 7zz+rkjiler trucks generd+ ;7j5/w-ivkqtz zhrally accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at+ l8:iaavvn0nh 9sy3l rest on a frictionless rink throws a 2 kilogram ball, giving the ball a velocity o3h +8vnay l0svnia9l: f 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the se/w)a ynxfily f8*1pqw3t *+surface of the earth with a weight of 100 newtons is accel8f+3w x1/*yt)fls* aqn p ywieerated 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 re xx2 yl/ngp4f0st by a constant force of 2400 N. What is the spenlf0x 2x4gy p/ed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/r/rbts4) p+flo :*y q m4mpjg/s slides across a rough horizontal floor before coming to restf mgsyo4bqpm:r/*l + /rt4j p). 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/)y9*xj gfaz f:s slides 8.0 m across a rough horizontal floor before coming to rest. The coefficient of friction ifaxz*y):fg9j s:

  09.21: A 20.0 kg box remains at rest on u*m,787a:nhfp 9ispu. kxbo ta horizontal surface while a person pushes direc87pb*sp ut7ni mfkao,u .9 xh:tly 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 uniformly to rest on)fr086n dt 1o,m w6elchz3h ah a horizontal surface. The block travels a distance of 12.0 m during the slide. Which one of the fo6 w hnh 0ma6rfz13,)doet8lhcllowing choices best represents the coefficient of kinetic friction between the surface and the block?

  00.21: A car of mass m slides acrosk5tn9 dd8m7ebx psh6) 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 kinetic friction between the tires and t9sk76p8m hn5dtb)x e dhe 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 icee2l4j n l qi:mii8-9kl at a speed 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 ron: 9liim ill42j8ek -qad is μ .

If the car had a speed of 2v, it would have skidded a distance of

  04.32: he driver of a carqv1lxb(5o * jh makes an emergency stop by slamming on the car's brakes and skidding to a stop. How far would the car have skidded if it had ( 1o*qxjhb5l vbeen traveling twice as fast?

  99.39: The driver of anv im1ww0nb0up 6edi7g.9j9 vi automobile must carefully control each of the following devices. Which of the9760v ng0vwp9.mi i duij e1bwse 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 58kr; p)czt9j1glkfi newtons. About how much time is needed to increase the rocket ’ speed from k;1l)z k5ci8jrg 9tfp12 m/s to 36 m/s near the surface of the Earth at takeoff?

  07.21: A box slides r1qd wl6nz-vuxm a8l61u:5i n to the right across a horizontal floor. A person called Ted exerts a force T to the right on the box. A person called Mario exerti6q5l11m6n uuavlnw r:8- dx zs 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 coasteragmjp99.t /p i tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlesm. 9jpa9i tpg/sly 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 eqa1 imxj:nws+ptzvhz i-(,i+-ual length. Assume that on all tracks the roller coaster carts sta :az(j-z +vnspih1,w tiim+- xrt 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 frictio/r 2uszpas ,*knlessly along the curved track from point A to point C under the inf,2*u/r skazsp luence of gravity. What would be the direction of the cart's acceleration at point

  02.40: A box with a mass of 50abs(flq jsi7qd vge4+ 3,n5/ii r+vy7 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 require3+j/eqr(yfi+775qd4, b gslsa invv id 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 against4qim)6i7f g 5q gwaxpah(.ki 3 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 is true of the friction acting on the block after a ti)73a( 5hi mwk6f ipq4gxia qg.me of 1 second?

  05.10: A homeowner pushes a lawn mower across a horizonta( ep/4twd7mkr6)l n4o *cela el 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 m4m (n)kl46elr7dp w*/eacoe t agnitudes 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. Neithe( n9x;sw hun/td)ns6(v oap; wr is moving. Which of the following sta6nn) w osa9;v( xu(hst/;dpwntements concerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as t,sim7tvm a7 yzcs;u5v7 sd9 a4he sleigh is pulled up a hill with an increa5d9 smza 7si4svv77 ;m cut,aysing speed. The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?