99.36: What happens to thz)gix4)oru/qj06l .sjm( ciydg6y4x *c otb7 e inertia of an object when its velocity is doubled?

  02.14: An intrinsic property of maw+u *2 rrq5-sb 4hari6lvwhf 8tter is one that does not depend on the quantity of matter present. Which of the following p42+r5h-6aqrilb * w 8fur wshvroperties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the sk8vk b h,r:ajv:xc6r. e(ay+z t(3;mts o; tuourface of the Earth. Assume the Earth has masu sy (mzht.:a,;t6or j:(cb a8xev r3;to+kvks $5.98 \times 10^{24} \; kg$ 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 Eartq 3c,tcsx9x ,th. What is the magnitude of the gravitational force acting on the earth by the sphere? The Earth masc, t t3xxqsc9,s is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for aoo4cu f;6og:the3s b4 n object’s velocity to increase while its acceleratiotb 4g e4u63fo chos:;on decreases?

  00.11: A certain particle undergoes erratic motion. At every poin,uw y0qqbh1 0x:fh,ejt in its motionb ,qjxqh:hfue ,w0 01y, the direction of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the enu9 dsvz0 hvg nh55o*+sd 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,u0svs5+dv h gz 9h5n*o 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 th41 m e);+fia+ibjlolu e following situations is the net force constantly zero on the objeifa elmiuo++ b;4j l)1ct?

  13.28: An object is in4 9gvfwn w/*9xje7)feqy yr r* free fall close 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 accele/ffe * jwxn*v4yeq9 )g9 ry7wrration 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 equilibrium has three forces, F1 of 3xc2*djz pb (q/2td . bts+ik1o0 N, F2 of 50 N, and F3 of 70 N, ab+ q/pio2s *xdk(d bc2jtt .z1cting 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 to form ah:gox s tk4y 2ls7wleo e6u4xd9(2rs5 resuxru2esh 9kle2dsoylg467:4sw xt( o5 ltant with a magnitude of which of the following

  10.06: Which of the following sta -flrp *l(t)elmkikj ;+3 iw4itements is most closely associated with Newton’s Third L3*wr l p(ji)4m+l ltk;-iikfeaw of Motion?

  95.06: The reaction force does not cancel the action force becau 5qhjzrh) dqceb, 3+r h5i0+hmse:

  14.14: A box rests on the flox+o+f ab . clmm5ql*-gor of an elevator. The elevator is accelerating upward. Which one ofof-*.x +ac+ gl5qmlbm 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 spe gp rml0jdzij 85kslj7pu/ n6 -mgy8.gd7sw:8ed. Which one of the following choices correctly describes the Newtong j75ps:swigd 0.8uryz6 l8d 7/8lkm pmjjn-g’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 with a speed of 35 m/s. The bat(hifc) 4r6wuk terswings and hits the ball. The magnitude of the force tha6) hi4kuw(c frt the ball exerts on the bat is always

  11.13: A physics book sits at rev/u so7 )4y8 dcjly75s kr:glest on a table. On top of the book is a calculator, also at rest. Which kyr 7y l/ ol547js8d:)cveu gsone of the following choices is the Newton’s Third Law pair force to the force that the table exerts on the book?

  05.06: The students in a Physics I class were in lzdy ;g6r. 6mqe* l)pawxpr);oab conducting an experiment related to Newton's Second Law. The collected data were displayed on the graph at the right. From this gq.y rxpao;dlr );ezpw*m6)g6 raph, what conclusions can the students make?

  99.03: If the net force on an object were doubled whild04 spto d+iuklldy 7iq9t351e at the same time the mass of the oddi1+ku49osdt y t 0qil57lp3bject was halved,then the acceleration of the object is

  96.15: A car whose mab, qvtfww))1eydw 5 m,ss is 1500 kg is accelerated uniformly from rest to a speed of 20 m/s in 10s. The magnitude of the net mvy, etd5w fwwqb1),) force accelerating the car is:

  99.05: A tractor-trailer truck is traveling dow)ss7yzjf2qy12- : /zxrwfy aqn the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force that therz1y jfq7wfa-/x2yz s 2:q ys) trailer applies on the tractor is

  99.16: Which of the following principles best explains why large tra el:/j0v cxpx6ctor-trailer trucks generally accelerate much moreejp/ 0lvcxx: 6 slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a fricd ,qvp,46ez8ljju : gitionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement describes the subsequent mop,46vj gelju,iz:qd 8tion?

  00.13: An object near the surface of the earth with a weigi7*ieytf 1ob rrpn:d x(:-qm3 ht of 100 newtons is accelerated at7-iqnp r yof3bmxrte :d1*(:i $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated from9um -.5g s,der5uria a5k4xau rest by a constant force of 2400 N. -aa5u54ruu.gx5 a,erkds m9 iWhat is the speed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a rough horizontak91/mvn;a qunl 9uvq 1ak;/ nmnfloor 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 a rbk8d.wkkqql7: )fo:;kickc6 ough horizontal fl kk:k7kb .d8cf;lciqk):qwo 6 oor before coming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at ry/yq 7 xc/2fppbei sy3*1y+ lpest on a horizontal surface while a person pushes directly to the right on the box with a force of 60N. The coefficient of kinetic friction betwee p pxef7i/y1bq */2spy yc+3yln 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 un jo yu2peij(lx85pyfzyi)a 2log 5xw/c,*:r0 iformly to rest on a horizontal surface. The block travels a distance of 12.0 m during the slide. Which one of the following choices best represents the coefficuigo)wfli5:2aco y rxe20 (8p*x5 j lyz /y,jpient of kinetic friction between the surface and the block?

  00.21: A car of mass m sliu seoshwkeb, 7/ :/d8udes across 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 coeffis kb:,/ehe/8uuod sw 7cient 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 afk i-j1zn6s9og+c5 ns/ au;69lgrw vat a speed v with its brakes locked. It then hits drkic-nfw6;un9 sv/oaaz6 51g9g +j slry pavement and skids to a stop in a distanced. 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 stop by bxfe 8 )rgq5kakw3mr,cq 49*lslamming on the car's brakes and skidding to a stop. How far would the car have skidded if it hwel3 g,q8rkc9 qm f5bk) 4x*raad been traveling twice as fast?

  99.39: The driver of an automobile must carefully control each of the followi jv;et:47yqcnng devices. Which of these qve4t jcn:y7; 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 n0monvk4sh /yn,kcm v90z jk)/ ewtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36 m/4omh km/0ky )cvn n/,k09vzsjs near the surface of the Earth at takeoff?

  07.21: A box slides to the righ5zmafi i 8n)4p-v(ci u4 lzfk-t across a horizontal 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. 5vz zmi(lkp -f4an4-8ufc) i iGiven 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 tracks al+24uf qs ;tpzij:j6ou05isof equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevis4qa6u su:0;ol j jt+zf25ip ation 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 -)1s6yueejvc length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly over the tracks to the finu6-sv eey1jc) ish.
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 rollercokl h5 m) bim6*/nuigt8aster cartrolls frictionlessly along the curved track from point A to point C under the influence of gravity. What would be the direction of the cart's accel6m8 n hi ug5b)*itkm/leration at point

  02.40: A box with a mass of 50 kg is t3usdp/bn 4s/(:x .jj snhfx/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 reqhnsptf/4x( .s/:xudj3 bsn j /uired 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 at88bx rhn,xezj (g44 jpuky19t rest is pushed against a wall by a 100 N force as shownyhrt4,xj 89z 1e (ngjpb4 uk8x. 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 time of 1 second?

  05.10: A homeowner pushes a lawn mower across a horizontal patch of grass bgp 6spt(a g 1bp,3bj)gq9m5awith a constant speed by applying a force P. The arrows in the diagram correctbgga s ,btppap6q3jb15(m)9g ly 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 a crate on a table. Neither is moving. Which w fk mz/jnj84 c6jx/3gof the following statements concerning this situatio 3j jnfmw8jx/kc4gz6/ n is CORRECT?

  06.15: A crate of toys remains 5b wkfwl 1 t)fcel)a4,at rest on a sleigh as the sleigh is pulled up a hill with an increasing speed. The crate is not fastened down to the sleigh. What force is responsible for the crwe ltfc)a)5 k,1f4lbw ate’s increase in speedup the hill?