99.36: What happens to the i 4*mniukmk qom497nb tr(i.2knertia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one tbn*o.i mpu-ha-g 0icxu:3/ lyhat does not depend on the quantity of matter present. Which of the following properties is NOT an intr.-nlhxbi:u3p/ -m *o cgau0iyinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume the Eart .:g6x vc4i+4f hcoxzuh has mass:g4o + f ix.ch4c6uzxv $5.98 \times 10^{24} \; kg$ 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: ftgu3*oaj: vm2a7ss Earth. What is the magnitude of the gravitational force acting on the earth by the sphere? The Earth mass is msuv t2: jsf7agoa :3*$5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to increase while its acceleric2.btb y /y+fmmm*v+ation decrease.mvb cmi/2*mb++fyy ts?

  00.11: A certain partic4kg+pw.o c iiq+wj..*phn*ocle undergoes erratic motion. At every point in its motion, the direc4w. +hip woiqg+c.* pjno *.kction of the particle’s momentum is ALWAYS

  17.14: A block is suspendezlk 8j.dzhure;r)3 ; uh p3j(hd in the air at the end 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, which one of the following choices correctly identifies the Newton’s Third Law pair force to ther) hkjjz3uh3.ld h;;zu(r8ep force of the string on the block?

  07.18: In which one of the following situations is the net force constantly o9q1 ydj xgf )2,gdyheh 8z62zzero on9d 2x)gefy,2hg qod z1jhz y86 the object?

  13.28: An object is in free fall close to the ground. A person 8dqoke/8*b-qym ks ,iintervenes and slows the object uniformly to rest. Which one of /k8 i,-ymesq odqk8*bthe following statements 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 equilibrium has three foz i0/v x2cotl,rces, F1 of 30 N, F2 of 50 N, and F3 ov0tcl/i2x,z of 70 N, acting on it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and aoq j/v7l0ri:u force of 10 newtons can be combine to form a resultan rvo7/lij:qu0t with a magnitude of which of the following

  10.06: Which of the following statements is most closelykw5lo1cdi7yg tu k zo38 )e1w5 associated with Newton’s Third La3 w z81oyu1 k 5tei)odgckw7l5w of Motion?

  95.06: The reaction force does not canc.uo52b micjvxx0w v*2)m /pxdel the action force because:

  14.14: A box rests on the floor of an elevator. The ele;;ge+ uw+getqvator is accelerating upward. Which one of the following choices best represents the Newtonweg;et q++g ;u’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 hkmljv:wy30, m k*pq+ed. Which one of the following choices cor:k0ql ykjhm*,3p mw+ vrectly describes the Newton’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 bp+gy dog- 3dr.y-x- agatterswings and hits thxg +y3p--oadry .d-gg e ball. The magnitude of the force that the ball exerts on the bat is always

  11.13: A physics book sits at restst5: gq 8)1) rmgthjli on 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 8ltsmg)1thq )j5i:rg that the table exerts on the book?

  05.06: The students in a Physics I class were in lr 3)wtaav ;8yxab conducting an experiment related to Newton's Second L)va8t xw yr;a3aw. The collected data were 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 whij rl f( mqvb)bum(1r99le at the same time the mass of the obj(9l1v rmfrbq9m(bj) u ect was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is acceleratede n p ryqlmjm 9-21g*x7/eiy(t uniformly from rest to a speed of 20 m/s in 10s. The magnitude of the n 1mj/p7e9ml*-ti2 yx e(q ngryet force accelerating the car is:

  99.05: A tractor-trailer truck is traveling.:awtp/t:k gm down the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward,g :apt kwt/:.m the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explains why large tkx7 k;vm,1ac7nf -sq v,8uwj iractor-trailer trucks generally accelerate much more slowly that a, vcaq j;iuw fs 8vm7kxn-k7,1utomobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink tkc /mr c;(geb)hrows a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement /g)c m(;ckber describes the subsequent motion?

  00.13: An object near the surfacg;iy5 he0+ aiz6e7xxw e of the earth with a weight of 100 newtons is accelerat i7xa+zw ;x6ee i5gy0hed at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200p sxhz p(h4(9y kg is accelerated from rest by a constant force of 2400 N. What is the speed of the car 8.z pys9(4h(h px0 s after beginning?

  98.32: A 3.0-kg block with initial speen (jy..bozu sfzrc k7ok+ ;;g+l 3n.ndd 4.0 m/s slides across a rough horizontal floor before coming to rest. The frictional force3k zcrdouyfo.7g .l;bjknz + ns( +.n; 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 acrosswi9) 2gpk9gw ,lly 7ua a rough horizontal floor before coming to rest. The coefficient of pw)ik 9ug72l yw lga9,friction is:

  09.21: A 20.0 kg box remains at rest on af8ek21r*p se qi2ofq 1, a-kzs horizontal surface while a person pushes directly to the right on the box with a force of ,osi 8e kf11q ea* 22r-pkfsqz60N. 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 initiau*deqt0*j5 eglly moving at 8 m/s accelerates uniformly to rest on a horizontal surface. The block travels a distance of 12.0 m during the slide. Whichegeq0j*d5 ut * 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 its brak jyfeo6gq,:r+ es locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic friction e,+ 6qfgy: jorbetween 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 spe nb0;q( g5 5zmgc9wy:kkg ,snped v with its brakes locked. It then hits dry pavement and skids to a stop in a di5bz0k:n(gmqgpkw 9n;g ,cy5s stanced. 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 slamming on the car'ssz61ntx6-d ubh 5lv8 ldm6;j y brakes and skidding to a stop. How far would the car havey6s8ml61lh jzt65 b -d ;uxdvn skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully control each of the t7;7a rkxn6wn t9+z ukfollowing devices. Which of these devices can ca6nawkt x;ktr 7zn79u+ use 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 newtons is 2400(1ymgt 4g,e 1o ;v1y1idxxqd v2dba2r0 newtons. About how much time is needed to increase the rocketi2 yvd(x r1 dbgd14o1a yt,g2eqv1m; x ’ 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 horizonl z4:aqilj , s-.c3htqtal 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. Given that there is friction f and the box accelerates to the right, rank the sizqsz4,cj ah.:ll-t 3 iqes of these three forces exerted on the box.

  02.27: The diagram below shows three roup pngr r1d*/*ller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rrg*np*p ur1 d/est 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 roller coaster tracks of equal length. Assu5fq elt6cz / s-req9q(/f 3wfbfw:+z mme that on all tracks the roller coaster carts start from res9er qfqbf(f/zstm3 w: -wc ez6lq+f/5t 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 carty*e; ddw-xj*f rolls frictionlessly along the curved track from point Ax; f*wjdy de*- to point C under the influence 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 the floor +uguub ydlmi- g3m+9( m(df-l 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 spu3u(d+f9g-(g lm iumy bdl-m+eed of 20 m/s as shown in the diagram?

  04.40: A 6.0 kg block initially at rest is kc,s6(fo4 cr:d-7u kbh g0fhkpushed 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 time of 1 second? 4kg 6- kus dbco rh,(hcf7k0f:

  05.10: A homeowner pushes a lawn q/mp(qiy3b;5 rz8 uo wce ks,5mower across a horizontal patch of grass with a constant speed by applying a force P. The arrows i5m; i3(br w,ypz/ou5sk8qqcen 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 force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against40p:uw lo+6 rnpa.ulg a crate on a table. Neither is moving. Which of the following statements concernilr+np06owal 4gu:pu .ng this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is i6dl i/.3j)s 7 ozyp5r u eh1o9tjz:gcpulled up a hill with an increasing speed. The crate is not fastened down to the sleigh. What force is responsible for the crate’sj hgr o sy.c1)zjio673 :t5/l9 ziduep increase in speedup the hill?