99.36: What happens to the inertia of aq/ox1zt vv3a -n object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not 1j4e75cpb xz: u7 s -mwxghhj+depend on the quantity of matter present. Which of the following properties is NOT an intrinsic z+c g:bmhux -eph4x7j1s57jwproperty?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume the Eagyv ob 65l r.hu5lk6*brth has mass 6v55*rl yubbh kg.6 ol$5.98 \times 10^{24} \; kg$ 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 ta p .0yqau -xgwr0o7-the Earth. What is the magnitude of the gravitational force acting on the earth ba wax yqro.p7u0t- -g0y the sphere? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an objectxwfei0u /ug70kot0u:f0t 3 dt’s velocity to increase while its acceleratiou x03f0ei0t: to/7ktw udgf0u n decreases?

  00.11: A certain particle un7 rah9sxg5.nu,a) apsdergoes erratic motion. At every point in its motion, the directionn7sag .aspx r9 5hu)a, of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string held by a persa )pdzmjumjb/.kq/-+ on. The person pulls on the string uniformly accelerating the block upward for a short time. During .dkj b/ua+m/m -)q zpjthis 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 nvt2+f - 0h )tij(xkskhet force constantly zero on thei(-)+vt2sjkhk0 fh xt object?

  13.28: An object is in free fall close to the ground. A person intervenes and ,4*2 xs c;qzmr(0oaw a9mfptbelu00u 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 wqupx40;azsma c*02u(,rt me 0lb9foof 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 ojh+x*0ksu*(6vg zz5 q6( fawmxc )jsr3 v2uiqf 50 N, and F3 of 70 N, acti2*6rjw xvshq z(zvk0+ a jm( qcsx3u*f )g5ui6ng on it. 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 tou )gs9d9bccx 1b2 i9pl form a resultant with a magnitude of which of the followi99ud b xipccs1) lgb29ng

  10.06: Which of the following statements ijm(: h3 m/iepm3tos5,kawx f obym(-4 s most closely associated with Newton’s Third Lxawm(o:smmt3,f-mo 3b / ypj ki4(h5e aw of Motion?

  95.06: The reaction force does notoy+er7 vu/g1 1s* gynl cancel the action force because:

  14.14: A box rests oncklev (-n+gn b*p9 -km the floor of an elevator. The elevator is accelerating upwar*k+(l- bp gncn e-9mvkd. Which one of 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 with constant speed. Which e)h0m3 tfft3gone of the following choices correctly describes the Newton’s Thir33 gtetfhfm) 0d Law pair force to the air resistance acting on the skydiver during the fall?

  06.08: A baseball is thrown by a pitcher witp1e/lq9 /pz i cfe*-pxh a speed of 35 m/s. The batterswings and hits9q1c p*eplx- z/ fip/e the ball. The magnitude of the force that the ball exerts on the bat is always

  11.13: A physics book sits at rest on a table. On top of the book is6bmc6;d3d ,13i5fttpo f horv a calculator, also at rest. Which one of the following choices is the Newton’s Third i6bt 3 o pcd,hm1 d;rt6f5v3ofLaw pair force to the force that the table exerts on the book?

  05.06: The students tu.v(v 6dqc6i in a Physics I class were in lab conducting an experiment related to Newton's Second Law. The collected data were displayed on the graph at the right. From this graph, what conclu6tuv.iv6( qdcsions can the students make?

  99.03: If the net force on an object were doubled while at the same time tf9m) c9uav) qghe mass of the objecv ) c9afm)9ugqt was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly froh 50r xhpe6o l2 tpm+b+j7ygk/m rest to a speed of 20 m/s in 10s. Th5x h+/ol+epg6r mktpb02yh7j e magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass of tcpvkm(g 0b3v)he trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the forbm)0 gk(vpc3vce that the trailer applies on the tractor is

  99.16: Which of the followink1tuirkf -iv3 (*o ,veyv23wtg principles best explains why large tractor-trailer trucks generally accelerate much more slowly that automobilev ye-(2fvwu kikt r3ti1ov3,*s?

  99.19: A 50 kilogram skater at rest n0i;lt3vh3ue on a frictionless rink throws a 2 kilogram ball, giving the ball a velochin ;vtu30e3lity of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface of the earth with a weight of 100 n ch r)5 *ub;zbdbg xd2(mn7s a)ipm*j5ewtons is accelerzb7br*i)25;dxhmms )pjunb agd 5 c*(ated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass 5nv7 yiubi es+z82j(p is 1200 kg is accelerated from rest by a constant force of 2400 N. What is the speed of the ij+ i yp8n7eb sv5u2(zcar 8.0 s after beginning?

  98.32: A 3.0-kg block with initial spe. b7kmmpi9i6 ted 4.0 m/s slides across a rough horizontal floor before coming to rest. The frictional force acting on tbimmi6k9.7 tp he 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 acr d 5:m:ksiz5:d h:fuw n,sr+ln8ffk:g oss a rough horizontal floor before coming to rest. The coefficient of friction muks5,f:hrf n+i:w5: dk :f ln8d gzs:is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface whi 2x67w(dy3 pn7usaobv le a person pushes directly to the right on the box with a force of 60N. The coefficient 3 2(x 67 b7pnsvouyawdof 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 initialcle;zpz od l75h mil1ui/.l63 ly moving at 8 m/s accelerates uniformly to rest on a horizontal surface. The block travels a distance l7zhmc56lzu;dloi .epl i 31/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 spq7+pltbqjrbi8f1 ve: wwik;,4;e k3need v with its brakes locked. It then hits dry pavement and skids to a stop in a distance4qfwwn+b73kp 1ei r;ilq,b;je 8 vt k:d. The coefficient 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 slides across a patch of ice at a jfth0e .(hw6dc28 a anspeed v with its brakes locked. It then hits dry pavement and skids to a stop in a dis(6c.w0jfen2ha t dah8tanced. 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 ske 3cw-tw- y1.ce/jrztop by slamming on the car's brakes and skidding to a stop. How far would the car have skidded if it had been traveling twice as fa-wrejz c/.c1tk 3-w yest?

  99.39: The driver of an automobux j q x0c +ohs37fr;,heg2go*ile must carefully control each of the following r+x 3oh qfh*uoj c0,g7sgx2e;devices. Which 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 w4mtnq/ qqkt/bj2j b*( eight of 15000 newtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36 m/s near the surface of the Eartb/qnk *j4b(tj 2mqt/q h at takeoff?

  07.21: A box slides to the right across a horizontal n12hcr rb6 5sefloor. A person called Ted exer5 rr 6ebs21nchts 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 forces exerted on the box.

  02.27: The diagram below shows three roller coaster trackw dv.6uz ju -,(0hs froc kv,y+; ptjn-al2yo8s of equal length. Assume that on all tracks the roojnzu f-.aj;hcd,- 2+8,60vvl (yr wostkyup ller 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 be traveling the fastest at the finish?

  02.28: The diagram below shows three ro,-3u rmt0swz mller coaster tracks of equal length. Assume that on all tracks the r-3rmsuwmz, t0 oller 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 curved track cm7ol m7 bk+)mjxm+8s from point A to point C under the influence of gravity. What would be the direction of the cart's acceleratiom) + jx+8mbks7ml7c mon at point

  02.40: A box with a mass of 5.g .v,c l)mu:) q2ztq x*/a tcunh1yys0 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 2cv:nt1ga/ qql *yc)hxs.) yu .2,utmz50 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 pushedma/sw 8 tu lk,c.*i9xj against a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 ilkxw,.a8c9/u* jsm twhile 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 mower across a horizontal patch of grass with 80 e hxyes0lrti2nx*, 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 forces*, he 8ix2l n0ytxr0e magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crate on a table. Neither is moving. Wujt1w(bkv7ln . -0 ulj4 vpn+h;tt*tthich of the following statements concerning this situation 0t+l(ttu*v; j7v-nbklup nw1 ttj.h4is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is pulledd4pb8ltdd sa 2 vhle+1wbr3:8 up a hill with an increasing speed. The crate is not fastenedhs:da38 +l pr14 tvb2edld8w b down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?