99.36: What happens to the inertia of an object when its velocity is doublaa0* p jia,cw: bk(p5ued?

  02.14: An intrinsic propzi7r 1dcfbjji8,6xy 76qfq6perty of matter is one that does not depend on the quantity of7jfp q 16,iq6dz r6xyc8ifbj7 matter present. Which of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume the Earth has7x d1 -myjrznl57 3 xcm,e; c17jnpbqy mass y1;qn3 j 7ny x1xdm re7 75l-mjbzc,pc$5.98 \times 10^{24} \; kg$ 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 oik j -ih.kng-: .et:y1xr2s3 tqlnb. of the Earth. What is the magnitude of the gravitatioj-nr1eq:h32. kbyt.g x i.oslin:t-knal 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 object’s velocity to increasy8w(t lv 8m pz.e5aq5ne while its acceleratiow vp( ym8z85neqal5.tn decreases?

  00.11: A certain particle undergoes erratic motion. Ai ilgaq.-xe-ie:y/7f wwf* o;t every point in its motion, the direction of the particle’s momen xiw -g. of7/yeqwi-*f:leia ;tum is ALWAYS

  17.14: A block is suspended in the air at the end of a sthh 3dph3yp td 1p(l4f2ring held by a person. The person pulls on the string uniformly accelerayth23h lh(dfd p4p 3p1ting 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 s .h ; dn*sda/u3+jufdiituations is the net force constantly zero on theid/n*;fs. u+j3h uda d object?

  13.28: An object is in free fall ctus5s y;i c89)xn5c)7pq- n wqg wqcc;lose 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 peru8;c; qc9p 5cww -s)insq75q ytgxn)cson? The magnitude of the object’s acceleration is a and the magnitude of the acceleration from gravity is g.

  98.03: An object in eqf.0z10gg: jhrm 5u fkeara4 w9uilibrium has three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magfa01gmwr rezf9: aj0 4.k5 hugnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons andh o.x ,.)h f;yrhvf7in a force of 10 newtons can be combine to form a resultant with a magnitudenfh.f iv,)o h.xy7hr; of which of the following

  10.06: Which of the following statements is myoa2enavbc)71 n5 cna/h9tn)ost closely associated with Newton’s Third Law of Mon)a/a 9na ehc57ocn1v yt)2nbtion?

  95.06: The reaction force does not cancel thr+yb8+zk94 edh o(ovd e action force because:

  14.14: A box rests on the floor of ,j os8s/oemv. h*qlchs*x 9j4an elevator. The elevator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational fq chh8**m9,s/ jsx 4vejso. olorce acting on the box by the Earth?

  15.15: A skydiver falls downward through the air witha.0 d 4w( so9mkan1 l1ivagw;s constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance acting on the skydiver d4o1nl(aa;1am.9ws dvgk0 wi s uring the fall?

  06.08: A baseball is thrown by a pitcher with a speed of 35 tw(ben8qhw/enfy 88(m/s. The batterswings and hits the ball. The magnitude of the force that the ball exerts on the batt (8 (qen8b8f y/nwehw is always

  11.13: A physics book sits at rest on a table. On top of the book is a calculat rfyjl7sgsqs fe. r6 qcam ;e9l9+94q.or, 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 t 7fj.r+aee y9qf cl9rgs9m6ls;. sq4qhe book?

  05.06: The students in a Physics I class were in lab cobe38 fr4yvlg3 ed +-.y(egt) 1fiwmdv nducting an experiment related to Newton's Second Law. The collected data r f1tf 8 eyi)3d+v (dy4g-lw3ebegm.vwere displayed on the graph at the right. From this graph, what conclusions can the students make?

  99.03: If the net force on an object were doubled j)s wz3 z/p 8z0kp:jrwwhile at the same time the mass of the object was halved,then the acceleration 3jjs:p)/w8z wz k0rpzof the object is

  96.15: A car whose mass is 1500 kg is acceledrqc- gh mo i8de,+iw-yx97y1rated uniformly from rest to a speed of 20 m/s in,x1i -wy8-d9 h mc7eq+gd iryo 10s. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass of th8eb5k+q (xa fp wr4a3s z,gcq6e trailer is 4 times the mass of the tractor. If the tractor acceq f(gc erp548 azw+a6xb q3s,klerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explains whywp,c qmig*+: 62 pv)g snvraf9gpuao+4k 34mh large tractor-trailer trucks genkp62 wa,43:rf* cu9+v+gm)q4snomg igh appverally accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at restk7jzhs o+v-r,y xf1q :m yq*0a1;g jlh on a frictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.1mvf, 0hjayoj skg+ xy*7q;: zhr-q1l0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface of the earth with a weight of 100 r,: i58tocp mkkp*1gz newtons is accelerac1kkr5 mo:8t*pzig p,ted at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accel-on6w6q 9qq :ri q.qnserated from rest by a constant force of 2n6.qwqn qq: o-qirs9 6400 N. What 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 hor h):r4wif5ix rizontal floor before coming to rest. The frictional force acting on the block is 3.0 N. How far does th ):xii5 hr4rfwe block slide before coming to rest?

  95.38: A block with initial velocity 4.0 m/s slides 8.0 8g- n9ybg46 q 5f5pv+reizpqfm across a rough horizontal floor before comiz nq8-efr 4gv6pb g59pyiqf +5ng to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horiz:hud3 x:nrew),0y 0rkio0 a auontal surface while a person pushes directly to the right on the box with a force of 60N. The coefficient of kineti3eor):i 0 h r,0ax:yuuwkan0 dc 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 o6fj8quv: .yf74v md k+p2dlmhn a horizontal surface. The block travels a distance of 12.0 m during the slide. Which one of the following choices best represents the coefficient of ki+ fu f2vdm7mlj4yh8d6k: vp. qnetic friction between the surface and the block?

  00.21: A car of mass m slides across a patch of ice at a k(f h*lx yhh:2speed v with its brakes locked. It then hits dry pavement and skids to a stop in a distak(hhy xh2*f:lnced. 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 acrossxo6 r( dmp4 -nfxs/q1 /m3jisr a patch of ice at a speed v with its brakes locked. i/ox 3 nqm6mrjpf d1rx4(-s/sIt 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 .

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-mls f(hw38 ekxy(x6hi cv*,y slamming on the car's brakes and skidding to a stop. How far would the car have skidded if it had be kyl-6*shwyf,h (x3evm8 xc(ien traveling twice as fast?

  99.39: The driver ofbvhp ja9b0 jf9sp4*)c an automobile must carefully control each of the following devices. Which of these devices can cause an acceleration in ahbp)9 a9j vb cjp*40sf 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 2(x+6 )pjpkm3 ryka7ubaz u.o newtons is 24000 newtons. About how much time is needebrxz2ukm) k p(y.3jp67ua ao+d to increase the rocket ’ speed from 12 m/s to 36 m/s near the surface of the Earth at takeoff?

  07.21: A box slides to the right across a horizontal f, t90:lkv;ogcbtdg *c loor. 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. Given that thgc0gtv;,c: bd k9lt o*ere 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 shgf4(z x;9 vbtgt.vn-hows three roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at theng-x .9; 4vhtftbv (zg 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 znihw**op iecu; ;x1/46mb rkshows three roller coaster tracks of equal length. Assume that on all traco*z i kmrwnh1*;bei4u /cp 6;xks the roller 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 tran1*;- qo do3 8kn4oknsfy zc5gck from point A to point C under the inf5 gk81n o dkn;yn4oc*q3o-zsfluence of gravity. What would be the direction of the cart's acceleration at point

  02.40: A box with a mass of 50 kg isi /0nmfibr0vfh nv38q+; zv u) 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 required to move the crate at a constant speed f)0r3;v /fm q uv+i0nn h8zvbiof 20 m/s as shown in the diagram?

  04.40: A 6.0 kg block initially at rbomug7p h;f,0- n0rwa51o cxyest is pushed against 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 tia0bp g0n5w17 x-oo hu;cry, fmme of 1 second?

  05.10: A homeowner push 81m demuo;d)gr/z 4fhes a lawn mower across a horizontal 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 magnitudes of the various forces on the lawn mower. Which of t8 emm/orz4) u;g dhf1dhe following relations among the various force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans ag wq,yj:vmfw 77ainst a crate on a table. Neither is moving. Which of the following statements concern7wjmvfwy : 7,qing this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as : mskp b1pwo6/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 crate’s incres6:p /wk1po bmase in speedup the hill?