A cyclist travels at a coo9qj:lb0ttt 3nstant speed of $22.0 \mathrm{~km} / \mathrm{hr}$ except for a 20 minute stop. The cyclists average speed was $17.5 \mathrm{~km} / \mathrm{hr}$. How far did the cyclist travel?

  Rank the magnitudes of the amm/8)-aqagg tni)d :b01r xjqv; owa8 verage acceleration during the ten second interval.

  Rank the magnitudes of the maximum velocity achieved during thn l7.*b ,9jmt2 utsbsje ten second interval.7 9.l2bbts u j,ns*tmj

  Rank the magnitudes of the distance traveled duringdb ef np,,i p(9g5e6vunr be66 the ten second interval.

  A crude approximation is thatvke of /f5f:oa:(2ezoq9 vzy)7e0fay the Earth travels in a circular orbit about the Sun at constant sfk:25ve( ea:0fqf fvoza y )ooe97z y/peed, at a distance of $150,000,000 \mathrm{~km}$ from the Sun. Which of the following is the closest for the acceleration of the Earth in this orbit?

  A child is sliding out of control with sw n714q 5*zpc vfrgm*velocity $v_{\mathrm{c}}$ across a frozen lake. He runs head-on into another child, initially at rest, with 3 times the mass of the first child, who holds on so that the two now slide together. What is the velocity of the couple after the collision?

  An ice skater can rotate about a vertical axis with an angular velmzy x6jt,)*,eg (mki vocity $\omega_{0}$ by holding her arms straight out. She can then pull in her arms close to her body so that her angular velocity changes to $2 \omega_{0}$, without the application of any external torque. What is the ratio of her final rotational kinetic energy to her initial rotational kinetic energy?

  When a block of wood with a weight ju- ss ipia96-of $30 \mathrm{~N}$ is completely submerged under water the buoyant force on the block of wood from the water is $50 \mathrm{~N}$. When the block is released it floats at the
surface. What fraction of the block will then be visible above the surface of the water when the block is floating?

  A spring has an equilibrium length of 2.0 meters and a sn04kf6 g 7a5ja8hx0 nt ckh0kwpring constant of 10 newtons/meter. Alic8hna 0k6 0 gw07t x5njfhkc4kae is pulling on one end of the spring with a force of 3.0 newtons. Bob is pulling on the opposite end of the spring with a force of 3.0 newtons, in the opposite direction. What is the resulting length of the spring?

  Which of the following changes will result in an increase in thex6it 5*h 3fc8 v*ciioc 69ekka period of a sim* ok 8v iaicifc65t3*ex6 9ckhple pendulum?

  A large metal cylindrical cup m ghta 6q,:bq7floats in a rectangular tub half-filled with water. The tap is placed over the cup and turned on, releasing water at a constant rate. Eventually the cup sinks to the bottom and is completely submerged. Wh t7,6mqga hb:qich of the following five graphs could represent the water level in the sink as a function of time?

  You are given a large collection of identic *n.i35 mb.w 7tg6llvo9ulrzval heavy balls and lightweight rods. When two balls are placed at the ends of one rod ..vlutw i m*n l6b9vzg5l7o 3rand interact through their mutual gravitational attraction (as is shown on the left), the compressive force in the rod is $F$. Next, three balls and three rods are placed at the vertexes and edges of an equilateral triangle (as is shown on the right). What is the compressive force in each rod in the latter case?

  The apparatus in the diagram consists of a sol66pxmqu 0n .d+sw i7hlid cylinder of radius $1 \mathrm{~cm}$ attached at the center to two disks of radius $2 \mathrm{~cm}$. It is placed on a surface where it can roll, but will not slip. A thread is wound around the central cylinder. When the thread is pulled at the angle $\theta=90^{\circ}$ to the horizontal (directly up), the apparatus rolls to the right. Which below is the largest value of $\theta$ for which it will not roll to the right when pulling on the thread?

  You have 5 different strings with weights tied at various point jmyckii47q4 cs7tmpl) au1 8et3kl2+ , all hanging from the ceiling, and reaching down to the floor. The string is released at the top, allowing the weights to fall. Which one will create a regcjq ci )7u 8a4klt7+yme21s kpm4ilt3ular, uniform beating sound as the weights hit the floor?

  A vertical mass-spring oscillator is 8 dwz3hs hld -de:i)zga-j16i displaced $2.0 \mathrm{~cm}$ from equilibrium. The $100 \mathrm{~g}$ mass passes through the equilibrium point with a speed of $0.75 \mathrm{~m} / \mathrm{s}$. What is the spring constant of the spring?

  What magnitude force does Jonathan need to exert on the physics book to keep thfgz,xv./wu4 1lgxu ,;bn -kix e rope k-xx,1bxgg wvz./fl 4ui;u,n from slipping?

  Jonathan applies a normal force that is h4 fx-gbmhs 31just enough to keep the rope from slipping. Becky makes a small jump, barely leaving contact with the floor of the box. Upon landing on the box, the force of the impact causes the rope to start slipping from Jonathans hand. At what speed does the box smash into the g fmx3h bghs41-round? Assume Jonathans normal force does not change.

  A block of mass $m=3.0 \mathrm{~kg}$ slides down one ramp, and then up a second ramp. The coefficient of kinetic friction between the block and each ramp is $\mu_{\mathrm{k}}=0.40$. The block begins at a height $\mathrm{h}_{1}=1.0 \mathrm{~m}$ above the horizontal. Both ramps are at a $30^{\circ}$ incline above the horizontal. To what height above the horizontal does the block rise on the second ramp?

  After how much time will 0.mcy, kc(ub ithe particle first return to the origin?

  What is the maximum distance between the pai4x ovw ee//pr*d 8t:jrticle and the origin?

  An engineer is given a fixed yiu+p+2p b4tby l3 sl55 gkf6ai( b2ihvolume $V_{m}$ of metal with which to construct a spherical pressure vessel. Interestingly, assuming the vessel has thin walls and is always pressurized to near its bursting point, the amount of gas the vessel can contain, $n$ (measured in moles), does not depend on the radius $r$ of the vessel; instead it depends only on $V_{m}$ (measured in $\mathrm{m}^{3}$ ), the temperature $T$ (measured in $\mathrm{K}$ ), the ideal gas constant $R$ (measured in $\mathrm{J} /(\mathrm{K} \cdot \mathrm{mol})$ ), and the
tensile strength of the metal $\sigma$ (measured in $\mathrm{N} / \mathrm{m}^{2}$ ). Which of the following gives $n$ in terms of these parameters?

  This graph depicts the torque output of a hypothetical gasolineg1 /w3ki 8c, pt;u swd5dzv kb.bcs/p. engine as a function of rotation frequency. The engine is incawubckdss / 5d ;bk,i8z3tvp ./c1.g pwpable of running outside of the graphed range.


At what engine RPM (revolutions per minute) does the engine produce maximum power?

  A particle is launched from the surface of a uniform, stationary spherekry / uob/tk,uno*3 /ical planet at an angle to the vertical. The particle travels in the absence of air resistance and eventually falls back onto the planet. Spaceman Fred describes the path of the particle as a parabola using the laws of projectile motion. Spacewoman Kate recalls from Keplers laws thao3/uo,y*b u k/ enr/tkt every bound orbit
around a point mass is an ellipse (or circle), and that the gravitation due to a uniform sphere is identical to that of a point mass. Which of the following best explains the discrepancy?

  A turntable is supported on a Teflon ring of inner ra56mxn (vzp6m ppb.+bg 0koae1dius $R$ and outer radius $R+\sigma(\sigma << R)$, as shown in the diagram. To rotate the turntable at a constant rate, power must be supplied to overcome friction. The manufacturer of the turntable wishes to reduce the power required without changing the rotation rate, the weight of the turntable, or the coefficient of friction of the Teflon surface. Engineers propose two solutions: increasing the width of the bearing (increasing $\sigma$ ), or increasing the radius (increasing $R$ ). What are the effects of these proposed changes?

  A hollow cylinder with a very thin wall (like a tod66pww;o;7+ eh,rv- (zfm ssai k pue7ilet paper tube) and a block are placee ,+o6p d uh6ipz;skvfa(w7;e7 -rsw md at rest at the top of a plane with inclination $\theta$ above the horizontal. The cylinder rolls down the plane without slipping and the block slides down the plane; it is found that both objects reach the bottom of the plane simultaneously. What is the coefficient of kinetic friction between the block and the plane?