99.36: What happens to the inertia of an object when itmaf9s(iy1i4jlq5 y uj + h1:oks velocity is doubled?

  02.14: An intrinsic property of matter hpn2vne76l5mis one that does not depend on the quantity of matter present. Which of the following properties n56pne vml27his NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface ofgq*;d7qzog60kg nl1) 8 pzagx the Earth. Assume the Earth has m ndzg gg68 l)7g;paozq0 q*kx1ass $5.98 \times 10^{24} \; kg$ 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 Earth. ke3 nl*r64kss What is the magnitude of the gravitational force acting on the r3kksse ln *46earth 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 itiigl*z 5,la2kjgy80ndg-v)v s accelerationn0ki*8zv,-5ai gggyldvjl) 2 decreases?

  00.11: A certain particle underi kd3v gjqd0d-v c cu71o51:jrgoes erratic motion. At every point in its motion, the direction of 7ckuro3i 51gqv:dcd -jdvj10the particle’s momentum is ALWAYS

  17.14: A block is sut p:dpm3sxpi8 (9x wr9spended in the air at the end of a string held by a person. The person pulls on the string uniformly a 9wmxp: ipd8s9xr(pt3ccelerating 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 fvl/o6rozn /x46i0x3qsz ;e r of the following situations is the net force constantly zero on tho;r/ r 6efn/ xlqs4i63xozzv0 e object?

  13.28: An object is in free fall close to the ground. A perso3 sw vuaumk49geaw:09 n intervenes and slows the object uniformly to rest. Which one of the following state9 kasuveuwg3:am 904 wments 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 eqjaj4yb: q 9ty*uilibrium has three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting onat9q *jb4yjy: it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a qnc+o6 j+ax )p0oii( pforce of 10 newtons can be combine to form a result (xj+ipp+0n cao6i )qoant with a magnitude of which of the following

  10.06: Which of the following statemenkha3rs op.k703w lgd:g7ch5y/9 qizz ts is most closely associated with Newton’s Third Law io5cs7ghz.0:7whl 3 kyzq k rga/9 pd3of Motion?

  95.06: The reaction force does not cancel the action fta/pyg67/mq ho,o/*)kfmvpv zs: jq37 /rf p xorce because:

  14.14: A box rests on the flooqfkuctvhgr:-j,pd 3jn +2 )(n r of an elevator. The elevator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitatikt f3 2n, +njcvgqu r-(h)dj:ponal force acting on the box by the Earth?

  15.15: A skydiver falls downward through the air with con98 wi0 acs:n.ummb, aqstant speed. Which onem 9ia as,.w8mn:qbu0c of the following choices correctly 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 battbowj g.:xq*z77pag;y jevs bi 5) gs.0erswings and hits the ball. The magnitude of the force th*: gz0og5)xj.jg77 saw s q.;pbbyievat the ball exerts on the bat is always

  11.13: A physics book sits at rest on a t1d9gg gi +l iye7xh8yf8f5w;y able. 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 th;+7lgiy5d8h8yi 91 yfe fwgxg e table exerts on the book?

  05.06: The students in a Physics I class were in lab conducting an exper7eoi (eqnfhbw w.8 rw: s+y //2ua1mxkiment related to Newton's Second Law. The collected data were displayed on the graph at the right.wxrebs:72 a f/w1+m8k( i.qnuw eh/y o From this graph, what conclusions can the students make?

  99.03: If the net force on an object were doubled whilex.q8;*,qmg mhs+:p cf7o djnb at the same time the mass;qb h7n.d* opf:qsc+mxgm, j8 of the object was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly from rest toe+qomfa9 u t1 2tn owjpk )(8afb6zy03 a speed of 20 m/s in 10sanqzo)t m( +8f k 6wtyu2f13eaj9p bo0. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass of z 1/m nxz/v xgo09-ia o8ox,gzthe trailer is 4 times the mass of the tractor. If the/imonxvzzoa1x 9,x/z g-g 80o tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best exvitr of 2 * .5 v2lethla bm)4hqpt+0+psj(0vwplains why large tractor-trailer trucks generally accelerate much more slowly that automobiles?q2t)w l0vvb(taoe0h irfs 4lh2mp.tp*++ 5v j

  99.19: A 50 kilogram skater wx1jg4, ln cy:at rest on a frictionless rink throws a 2 kilogram ball, giving th1n y 4:jcxglw,e ball a velocity of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near t3ge vmuskq+, + 54qx/nzc.kp mhe surface of the earth with a weight of 100 newtons is accelerated qu .c3/vmkx+,4 ez kq 5npgms+at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated from rest by a constant (qgo;lk /1 4,a arlg.0dzchx ilsp1;oforce of 2400 N. What is the speed of the car 8.0 s afl.; ;1 hc1g dogr/o0, 4lsazix(l kapqter beginning?

  98.32: A 3.0-kg block wip2m krj,f,dbx y0 1w,qth initial speed 4.0 m/s slides across a rough horizontal floor before coming to rest. The frictional force acting on the0p,m qyx,2,1bd jfwr k 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 rough h e3qnot:3 fyrzz1tqmqq+37c ;orizontal floor before coming to rest. The cz3zm c oyqqq3+rftt1n : 7;3eqoefficient of friction is:

  09.21: A 20.0 kg box remains +0zvad5vv w8m at rest on a horizontal surface while a person pushes directly to the riz08vvdvm 5w+aght on 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 accelvcchyzz g .;+0erates uniformly to rest on a horizontal surface. The block travels a distance of 0.g+c;h vzzyc12.0 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 w.,k :tnou mkycpojxmv + +,j7:ith its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic frictikmxnp: 7:y , k .v+juc+ojo,mton 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 at a sa *4dhi-55olya p (vclpeed v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic friction bet-p 5hya5cloa4vid(*l ween 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 gl706wde9hg 5gkspng 82v 5pi;8zsolon the car's brakes and skidding to a stop. How far would the car have skidded if it had been traveling twi865ih8p5gks n vplg7o; g209we sdzglce as fast?

  99.39: The driver of an automobile msq6- yd z+vgmawz t(,+ l7lt+pust carefully control each of the following devices. Which of these devices can cause an accz( +-6dw+tzsvt7+mqa p l,yl geleration 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 24000 newtons2bkzom/ y+/ ys. About how much time is needed to increase the rocket ’ speed froo+ /2bmsy ykz/m 12 m/s to 36 m/s near the surface of the Earth at takeoff?

  07.21: A box slides to the right across :uhen w,p-s):hkc +l xa horizontal floor. A person called Ted exerts a force T to thes lx)n-h+u:w pk ,h:ce 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 sizes of these three forces exerted on the box.

  02.27: The diagram below shows three roller coaster tracks of equal length.c /yd, 02bs w,+-gfp vaxz.w:dglula3 Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly over the tracdxspg /,0+ lu2fgl b,da.:wzy a -c3wvks 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 rol 7pqd5,o0. ielh bbc;avlr,n ,ler coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the samedl.; v, qr ohai,50npbb el,c7 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 frictionlesb/z;ohcc u( *1stfre8 g31 mwxsly along the curved track from point A to point C under the influe; 1e rh81/bu*(tmcfog3wc xs znce 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 draggedc b90bxadw4nzt 15gdgx87px 5 across the floor by a rope which makes an angle of 300 with the horizontal. Which of the followtz g g98bc75pxa dnx4b01xd 5wing 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 dyhj1j261d3z a do8uoy6r; cxrest 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 ofu8 2jr dd jc6zd 31ao16x;ohyy the friction acting on the block after a time of 1 second?

  05.10: A homeowner pushes a law+n-w7/9 e(/mcj4bdvg(pbnmib yq o/xn 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 the following relations among the vario7v( qmx/mgb njb/ +p- c/nobeywd 49(ius force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crate on a tablrxr z xcn0 ;),ja*j0plu2 xc-6. fvwxee. Neither is moving. Which of the following statements concerning this situativ;p x .nrr)zfe-ca0 w2lx6x,u 0*jjc xon is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleip,co2(sd0s ;f6 oq/i8 lwbqmwgh is pulled up a hill with an increasing speed. The crate is not fas,2fd6qscp/(lwosombi 0w8 q;tened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?