99.36: What happens to the inertia of an object when its velocizlak* xxdf 8rv4b4a s;/t 2it;ty is doubled?

  02.14: An intrinsic property of matter is one that does not depend on thex.isd*svk p0b7yk9x9 quantity of mat bxi 09xp97k y*sks.vdter 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 thelp )tdywk) )z7cw y7fe(-:juf Earth has mass 7fe(d7p:-j)zc t wfyyl )w)ku $5.98 \times 10^{24} \; kg$ 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 s(,o .gv ygulft8eww:5i*ui0 surface of the Earth. What is the magnitude of the gravitational force acting on the earth by the sphere? The Earth mass isvugwi 5yf8(tw.si*ge,:0 ol u $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to762t,*toi* ja7yfzc pzc5lj x increase while its acceleration decreases? tpc27 *z5jzo txai*cy7 6lf,j

  00.11: A certain particle undergoes erroh)e *a4e;dty;y bx)w atic motion. At every point in its motion, the direction of the partxb ;eo4)yye;* tda)w hicle’s momentum is ALWAYS

  17.14: A block is suspended in the airfd,ryz6t3h0z 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 3z0yf h6zdrt,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 net forceps3 2 qt+ujxe,ixt.2oa 4g zw8- ra4fj constantly zero,2p itre-uxtjx+f4a3 s84 q2 .jozgw a on the object?

  13.28: An object is in free fall close to the ground. A pers*t ff*i0j6v(qben mo6 on 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 person? The magnitude of the object’s acceleration is a and the magnitude ofqbfo6*vt 6j( f*0mnei the acceleration from gravity is g.

  98.03: An object in equilibrium has three forces, F1 )p1(qed snjp0 f::oafof 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitude of the resultod:: es(pqfp)01fja nant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can be como j/)uf6 fl6stbine to form a resultant with a magnitudlfj6to 6ufs) /e of which of the following

  10.06: Which of the following statements is most closel,myi 7;qv)p 9l 1nph9lt 0chaoy associated with Newton’s Third Law ohq ln)cph,y7p imv91tl;0a 9of Motion?

  95.06: The reaction force does vivtesk8lg+ 7v4n eg )8uh76qnot cancel the action force because:

  14.14: A box rests on ti-dml4fmn ,l4fm n cp28sz5h0he floor of an elevator. The elevator is accelerating upward. Which one of the following choices best mm480cnz fmf,d lsnpi2 4hl5- 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 sz zjm7gp dxy)u i+6n7n:c:t ;vpeed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance acting on the skydiver during tz)cd;t u ixy7z76njn:+ :mvgphe fall?

  06.08: A baseball is thrown by a pitcher with a speed of 3f2*iu)h (ia s7k7ucbk5 m/s. The batterswings and hits the ball. The m)sku7aik b*i 72f (uhcagnitude of the force that the ball exerts on the bat is always

  11.13: A physics book sits at rest onddxtl2k 3 5t,0yadbw- a table. On top of the book is a calculator, also at rest. Whly0dtd 2, dk-a x35tbwich one 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 lab co;y+agqg*y xpxsc p(3 9nducting an experiment related sy3ypxxqa(*+g 9p cg; to Newton's Second Law. 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 while at the same t t.e 8kmr-,n pb:avtd0ime the mass ont,-v ted b:kap80mr.f the object was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is o /7q f6q:cqdlaccelerated uniformly from rest to a speed of 20 m/s in 10s. The magnitude of the net force accelerating the car i coqfq :/7l6qds:

  99.05: A tractor-trailer truck is traveling down the road. The mass ohai ;viv -gd9n-, ;gbff the trailer is 4 times the mass of the tractor. If the tract b-i v9,dag f;in;ghv-or accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the i( lbs)tgh;o2n1noh l*h7wwm* sb76 e following principles best explains why large tractor-trailer trucks generally accelerate much more sll*wn*)s;1 2hbmhootsb6n e g7iw 7(lhowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a 2 kil7,l2obq:pab/dvi h85 +,kjn g *slszxogram ball, giving the ball a velocity of 10.0 m/s. Which statement describes the subsequent k h+o8*agibsxl v7n,qj52:p/z bsdl,motion?

  00.13: An object near the surface of the earth with a weight of 100 newtohqlpls 3fe.9 6ns is accelerat6l.3elfhq p s9ed at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass isw.vn0nwzs 6u::gb i. z 1200 kg is accelerated from rest by a constant force of 2400 N. What is the speed of the car 8.0 s after beginbu.:gi6 v:0 zz.wnw snning?

  98.32: A 3.0-kg block with initial spwjmam +jv1v6*m3isg9eed 4.0 m/s slides across a rough horizontal floor before coming to rest. The frictional force acting on the block is 3.0 N. How far does the1jsim69amj+ 3vm* vgw block slide before coming to rest?

  95.38: A block with initial velocity 4.0 m/s slides 8.0 mg5 gzuvc +xzmc/jzwhey /518 7 across a rough horizontalce8zv /c5w5yug1/jz+ mhx7gz floor before coming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal su6 0f5u xemjl2krface while a person pushes directly to the right on the box with a force of 60N.x0jml6 eu5fk2 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 uniformly to rest o,nu v9sh0 j*y3;dmfy gn a horizontal surface. The block travels a distance3;y,*sf 9 v0 hgmydjun 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 speed v with its braks :f3-tu;u5;; kdt;zcs s ozfdes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic friction between-t s;dz35ck;f:uod; f zsu s;t 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 j-,6qvwb,- mqdbw.bao ;i ia)slides 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 coefficient of kineticba mw6aibj. )i-wq,q; bd v,o- 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'hts)e1 g(*f: y7vckxav (kx+ * -wglhws brakes akw g khs)yxe*c1w*f7 tx+ v:(hv(-g land skidding to a stop. How far would the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an automobilj4wul oe*i ya25h1*jf e must carefully control each of the following devices. Which of these devices can cause an acceleraauloj1f 25wji e4h* y*tion in a moving car?
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net force on a r:5 t,,(+ mceye9l;l, zj jjqvvmje 2uiocket with a weight of 15000 newtons is 24000 newtons. About how much time is needed to ij, ml +vjj m,lu;9j q2e: 5vyz(,ceitencrease 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 thyxhg7n+*hg: refc- ;2ks hwq ;4eo8qd e right across a horizontal floor. A person called Ted exerts a force T to the right on the he+2;;wegx qc yg7nqso*r4 h-8: kd fhbox. 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 loj;x:q5 7hxnl2ilex jz)s 7- roller coaster tracks of equal length. Assume that on all tracks the rolljx7:znilo7x5 lel q ;)-h 2jxser 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 roller coaster tracks of equ9a2 :xc m/jisnb bb2j)al length. Assume that on all tracks the roller coaster carts start from rest at the same elevcnj i9 j :s/m2)abxbb2ation 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 frikg bkl 4/zc1t6o e*j*kctionlessly along the curved track from point A to poitc ojz ke k4k1*l*6bg/nt 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 by a rope which mri+g4() o(d,v 5m4cgxut b sqpakes an angle of 300 with the hor g,(vmbtcug qxp4do)4i(+ s5 rizontal. 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 100zj *y.sqndk9/ 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 fri*dq/.s9 zy nkjction acting on the block after a time of 1 second?

  05.10: A homeowner pushes a lawn mower across a horizontal poi:p(bb w* (kpatch 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 the following relations among the various force magnitudes, (:kbboppw i(* W, f, N, P is CORRECT?

  06.14: A book leans against a crate on a twvdc-9( zr84i ,7 vdqtlroci2able. Neither is moving. Which of the following statements concerning this situation is CORREd9d ctl2-v( ,4cz7rwivo rq8iCT?

  06.15: A crate of toys remains atsu 0mvs 5-(e1nh 2jx-brvwf3w rest on a sleigh as the sleigh is pulled up a hill with an increasing speed. The crate is not fastened d25hfe0v3 jbwx1rwvn-(- ssum own to the sleigh. What force is responsible for the crate’s increase in speedup the hill?