99.36: What happens to the inertia of anjwpsn31g;bebj. wl p s)*.p v2)dzk(n object when its velocity is doubled?

  02.14: An intrinsic property of matter is one eop ue ,1y14mithat does not depend on the quantity of matter present. Which of the following properties is NO,4uo me pi1y1eT an intrinsic property?

  04.16: A 20 kg boulde*z8dkdmev(2 gr rests on the surface of the Earth. Assume the Earth has mase* k8mvzdd2g(s $5.98 \times 10^{24} \; kg$ 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 (s cqh*u f9*aj/i9edq hia 74knear the surface of the Earth. What is the magnitude of the gravitational force acting on the earthade 94 *u c*fkj aqshi9/7(iqh by the sphere? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to increase while its accelepeh+.j/ xx6zzg +9ad(xgcq9p/c4ro pration de+chz(o6ea.xx/9 pdz gpr+/9p gj4qcxcreases?

  00.11: A certain particle undergoes erratic motion. At every point ino/14 1 osfc7xh/ofo3u5 gabdg its motion, the direction oh3o f/b5duc1xs4oa goo f7/1gf the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string held by a pem*zdvp t9mx.9 guf3v .nu ,w4erson. The person pulls on the string uniformly accelerating the block upward for a short t.pdw*f.4nm guz,xte vu3m9v 9ime. 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 si m(h axmv.-6lmqz0oj46e 6 sxqtuations is the net force constantly zero on the object-e. sh 0mm (vx66aqx zloj6mq4?

  13.28: An object is in free fall close to the ground.yo48i7ii8mg/vfvqg( ct5+dw A person intervenes and slows the object uniformly to rest. Which one of the following svf/ tggq(845i +iiwmc v8d 7oytatements 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 acceleration from gravity is g.

  98.03: An object in equl :bosp1r. f- p(y2(k (jpopnkilibrium has three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitude of the resultant fpl :kbos2rp.1p((k(jnoy- p ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can)x5ehuuni1b u9 /y/qg0b zvg qk+1m4a be combine to form a resultant with a magnitude of which of the folloz41hba)1+ guvq9x ui nkmu5e/0 / gyqbwing

  10.06: Which of the following statements is most closely associated with 7jef*13dko/ qxav v7.pk+ zg aNewton’s Third Law of Motioa jk+z1p7xd .a/g *3voqe7fkvn?

  95.06: The reaction fe8j:wb pay dk.i0 .fr5);sh reorce does not cancel the action force because:

  14.14: A box rests on the floor of an elevator. The elevator is acceleratiy- d(otlx+giem47ua82ha v2 d ng upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational eg8 o24amvd(u tly-7i xhd a2+force acting on the box by the Earth?

  15.15: A skydiver falls downward tsjvx0ra,m9 9c.i jk x.hrough the air with constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance acting on the skydiveraxj. svc99j.0xmr, ki during the fall?

  06.08: A baseball is throw+xn5vece .oj. f;ur patz4* 8jn by a pitcher with a speed of 35 m/s. The batterswings and hits the ball. The magnitude of the force that the ball ;4na*et .8+cpev5 juox .rjzf exerts on the bat is always

  11.13: A physics book sits at rest ojuo;mpjto aikd 350h9 m+rzwpt-4 ;x9n 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 ttm kwja;-9 4+o03p 5pr9jdimo; xuz htable exerts on the book?

  05.06: The students in a Pw5 esw6 b/lo+zhysics 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 conclusions can thezbol5/ w6ws +e students make?

  99.03: If the net force on an object were doubled while at the same ti+h(7dl qrr 0ou6ogtu9me the mass 9+lrt0(du6oho q u7rg of the object was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly 4/sd r3fh7lp2p d9hxnpjb(2 g from rest to a speed of 20 m/s in 10s. The magnitude of the net forcelrps2d3bjh p/7fg9px dh2n 4 ( accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass of the r4+ 40 prll2krm hwzc+trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the trahzrw4 c plr+l4r0+mk2 iler applies on the tractor is

  99.16: Which of the following principles best explains why lah9zlq3( 3ijgdrge tractor-trailer trucks generally accelerate much more slowly that g3 zi3dqhlj 9(automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a 2 kilog:7bipk2c*91 pvrof d*wcae56syr1 k xram ball, giving the ball a velocity of 10.0 m/s.ox7* 61rk2iyk*dfaeb9r1cp p wc5:sv Which statement describes the subsequent motion?

  00.13: An object near the surface of the earth with a weight of6bctdtgh: yg0p :7n 14 +mnuln 100 newtons is accelerated at tmb0lp7u 1n 46y+g: n t:gdhnc$4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated from rest by ap5p ab3g/rl, z constant force of 2400 N. What is the speed of the car 8.0r ,pa/zb3l5gp s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slidtghgs r1* i9hxb42j +9 w;yc-gy )ofbzes across a rough horizontal floor before coming to rest. The frictional force acting on the block is 3.0 N. How far does the block slide before com t-+4br*cjfgb;ho) xg9gz2y91 h yiswing to rest?

  95.38: A block with initial velocity 4.0/k n8:by:qu)ojo( gjp m/s slides 8.0 m across a rough horizontal floor before coming to rest. The cb/y8jp o ngk :uj):oq(oefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a hor9:k xqds xgm6( sg(tepg f*1,jizontal surface while a person pushes directly to the right o9dq*pkg(m,:s xex1t gfs(6j g n 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 z6x1,y,mfz3*vg krb u4 + qtmcuniformly to rest on a horizontal surface. The block travels a distance of 12.0 m during the slide. Whzrx 6utm,+z*y, ck 34 vq1mfbgich 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 ;m*vqjrbof f6q0 4sh 9rya9c +its brakes locked. It then hits dry pavement and skids to a stop in a distanced.+o*vf0cjrh9f 4 bqy9 qm;r6as 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;7i ck.mo sc*yy*: ges 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 the dry road is μ .o*7yc:.sk*m gy ; ecis

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

  04.32: he driver of a car ma1pc7 z9ohjiq, kes 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 been traveling twice as f,qpi7 cz9hj1 oast?

  99.39: The driver of an automof/3pps* rlid ))gs6jfbile must carefully control each of the following devices. Which of these devicf p /l*gd6)) s3rsipfjes 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 rocka ky,.,j+*vx ye c,gzwet with a weight 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 surfagey yj.avck* z,,w+ x,ce of the Earth at takeoff?

  07.21: A box slides to the right across a hr0bij8uu y/f -orizontal floor. A person called Ted exerts a force T to the right o ru0 u8/bfjiy-n 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 tracks of equalxl3ua yx 6dc:y75ro/cq/ di1v length. Assume that on all tracks the roller coaster cart1rvo7 /y/a3 i:ydcuq6ld x5cx s 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 thred qwnfq66oa+ia; c f(5e roller coaster tracks of equal length. Assume that on all tracks the rolcqf; 6a( 5 io6d+nfawqler 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 6e5n 5j;2vofvwh6+ n w;orngffrictionlessly along the curved track from point A to point C under the influenchvo jn6+o56 gen f2frw; v;w5ne of gravity. What would be the direction of the cart's acceleration at point

  02.40: A box with a mass of 50 kg is dragged across thecf1 gl54;djntzs m;y (-)xkv v floor by a rope which makes an angle of 300 with the horizzsjygc(f 5 l1 ;4)mv-nvx;tdkontal. 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 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 pushed against a wall by a 100 q.z6a;qab y d7s60leie(sfh 7 N force as shown. Thecoeffic7sf hd q6 as76yl;0eb(azeiq .ient 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 patc jcc-pju//z-pdk t+ ,fh of grass with a constant speed by applying a force P. The arrows in the diagj//zcutfcj p k,p-+ -dram 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 force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans again)73*2 rjifos 38cp*ldwe gq ibst a crate on a table. Neither is moving. Which of the followpdqe37g *ci)f3jls*2o wb ir 8ing statements concerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a r5e ):yxpz rp5 0,cksdeptufje2r8+ 7sleigh as the sleigh is pulled up a hill with an increasing speed. The crate is not fastened5ey0x , )ejscuprrf:k7rd z8tp +5p2e down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?