99.36: What happens cdbrnb9c vn d, u ,1wnhul-1-r53vcj: to the inertia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is pld.tljj v34x ,oz5/ bone that does not depend on the quantity of matter present. Which of the following properties is NO jz ,/.x4tljp5vlo db3T an intrinsic property?

  04.16: A 20 kg boulder rests o lu9.g s(yvy*k (iq,h6mbfb .wo4 f7atn the surface of the Earth. Assume the Earth has mass y ku7f9b6v w,b.*(.sf(iyma 4hgqlot $5.98 \times 10^{24} \; kg$ 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. What is xi15,5ktotnc bacwg3 f xko1+z1-hr9the magnitude of the gravitational force ac1gn bf539z1k5oah tck x rwcix-+t,o1ting 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 increas44d-sjz ,xz ato g3k0re while its acceleration decreases03azr -4 s,d4xtkj ozg?

  00.11: A certain particle undergoes erratic motion. At every point in its fpuaee*8dzv o.0.rk(3s ge i6motion, the direction of the particle’s momen63.ei0.e zaks8repovdu g * (ftum is ALWAYS

  17.14: A block is suspended in the air at the end of a string held by a persse 4x.k l)4q+9 /sa eag8yacdnon. 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 g/k ce8qxy 9+elsa)4an4.asd Law pair force to the force of the string on the block?

  07.18: In which one of the following si mu2qz:nb.q2 u:q zwv goo/)qe63u9mjtuations is the net force constantly zeroevqu3q q2jb uwn)z.m:uz2o 69qgo: /m on the object?

  13.28: An object is in free fall close 5zxkz : ixo5i9to the ground. A person intervenes and slows the object uniformly to rest. Which one of the following statements must be true abixzo5: 9xk 5ziout 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 ft-bx,9ll yvx62l,+bem / avc oorces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitude of the resultax t-,mc x+/ll ole6y bv,b9av2nt ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 n 2/jw3u i+3xa(wa)jpda;e:f +iv c werewtons can be combine to form a resultant with a mava: ;j 3awex+e /2a ci(j)w3+fidr wpugnitude of which of the following

  10.06: Which of the following st icev8.ds--rzyl/gu kij 74;h atements is most closely associated with Newton’s Third Law of Motion?.ruj c l7vi;-dhiskz/ -8ye4g

  95.06: The reaction force does not cancel the action force beca mg g)l0,o v+2z,v4yehef n)rdma r25guse:

  14.14: A box rests on the floor of an elevatorex5un y-m3hi3 q+5kby. The elevator is accelerating upward. Which one of the following choices best represents the Newton’s Third Luh5b-i5ynq +m3y e3xkaw pair force to the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls downward through the air /da *+9xkpat :hb( 1gfl pud+iwith constant speed. Which one of the following choices correctly describeahxb++id9l f1ap(*p/gtk: ud s 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. Thek9a / yaax5zsv//.yno batterswings and hits the ball. The magnitude of the force that t o/.aa9y anyk// v5xszhe ball exerts on the bat is always

  11.13: A physics book sits at rest on ax qfb+(2dd yv8tv7 7rcn8vw3 m 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 table exerts o t82q7 b(cfrmw3yv+ dxv8v n7dn the book?

  05.06: The students in a Physi s *wrxy1l4x(x,e4 kj clt4k6dcs 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 the students make? , ekj4 txxyk1 x*rslw4d6 c4(l

  99.03: If the net force on an object were doubled while at the same time the; he2qxyq( y5fptv 5-l/3x tal mass of the object was halpv /at l-xf2e53;y( yxql hqt5ved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly from rest to *egwb-p /mv9,- mxeqoa speed of 20 mo p/q -b9ee, xwv-*gmm/s in 10s. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. Thqsh ;wity*po0* ai w 9)j0erf9e mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward,e9f 0rwaiih0y*9 *;tw p qojs) the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explains why lan6o 4z2corlsv +6wwt)rge tractor-trailer trucks generally accelerate much morlo)wo46w+t svz6nc r2e slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a 2z1f0 tr8 nlx3 3r;hze, tdyjx47cfen, kilogram ball, giving the bal x ye; 18zn7n3 e0x,jrzr3hcf4dtftl,l a velocity of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface of the earth wqq9l53swe mxo*n +(o with a weight of 100 newtons is acoxm+q*l3qwew(9 sn5 ocelerated 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 cohl9t2 u69pk 9a awu o0on8z)emnstant force of 2400 N. What is the speed omw eunpz0la o9o)8 ak9uht926f the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides acrocfrbh s7/za sc k5)u5-ss 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 hs /cb5fukr5)s c7za-coming to rest?

  95.38: A block with initial vtf b( 0-k,ophwz((icxelocity 4.0 m/s slides 8.0 m across a rough horizontal floor before coming to rest. The coefficient of fr (( 0xtpohckzb,-fwi( iction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a pers59uf7-fwzbxn r hqd)9on pushes directly to the right on the box with a 9x 5b zdf)-7nw h9fruqforce 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 accelerat b5a :os7w*,: pz o4sd -cpll0*apzdghes uniformly to rest on a horizontal surface. The block travels a distance of5 :pa: p7soa,0dc-wz*4 h zg*pbo lsld 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 slf24u g c9ri 3ng)qza9qides across a patch of ice at a speed v with its brakes locked. It then hits dry pavement and skids to a rcgz3 qn99iguq f42)astop in a distanced. 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 uq-*jdi46;vfxb7fo qacross a patch of ice at a speed v with its brakes locked. It then hits dry pavement and sk fuv ; -xqqbdf*46ji7oids 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 s 3:qgz/z tvabyn7;5t gtop by slamming on the car's brakes and skidding to a stop. How far would the car have skidded if it had be 7 nay;3tvbtg:g5/qzzen traveling twice as fast?

  99.39: The driver of an automobile must cj siftxay1+1,jtk*p ) arefully control each of the following devices. Which of these devices can cause an acceleration in a moving *,t pt )aksf+i y11jjxcar?
(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 new)t1p2j re timon*u5 g9tons. About how much time is needed to increase the rocket ’ speed from 1te)ni pgm utj9512*ro2 m/s to 36 m/s near the surface of the Earth at takeoff?

  07.21: A box slides to ioyewrdpj wvs3rf( (6;0g )t-58r9qazkb jj-the right across a horizontal floor. A person called Ted exerts a force T to the right on the box. A i vwozyg-efjd;65jr b9ra- )(t8sqr3 0wj(p kperson 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 tri2e/ /g mf h gdl;gmi +xxoli:x-*,6boacks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly over the tracks to the gmml+6bh xof/x l-,de; oii2 :*i/xggfinish.
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 belumiddrf9(: ezhf f-s+ws 9+0mow shows three roller coaster tracks of equal length. Assume that on all tracks the rollefi m +zw+ ff9d(dms9eh0r-s :ur 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 rollercoastb7j;.k5lrzco/ jn 7kber cartrolls frictionlessly along the curved track from point A to point C under the influence of gravity. What would be the dj/cb blkn j;5z7k.r7o irection of the cart's acceleration at point

  02.40: A box with a mass of 50 kg is dragged across the floor by acyak -he0q/t, 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 crq-ekc/, tah y0ate 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 againstvphz8yhe+f ip3rn*v27yt 2 h3 a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the cor 2 8tep7izn3yv3hf 2yhvp h*+efficient 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 patch of grass 4v an5:qhkyo3 tlgfhi 9 0c8e5with a constant speed by applying a force P. The arrows in the diagram correctly indicate the directions bnoh5 vc 5 :agl930qtyikeh4f8 ut 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 against a crate on a table. Neither is moving. j 6wgi7* w0kyuzqv qhz,f* d)lk70 ,quWhich of the following statemenkwuq*wzlqk ij00 y)7huqv,,d 6g*f7zts concerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sle,mm:aa2klbkfr, 4p ij6y9:xo igh as the sleigh is pulled up a hill with an increasing speed. The crate is not fastened down to the sleigh. What fof:ap yok, : kjb6a,l9ir24mxmrce is responsible for the crate’s increase in speedup the hill?