99.36: What happens to the inertia of an object when e+b zhp(z*c12qv p .k8cql3gs its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not witoaq;2 w 0ra*wr+o; depend on the quantity of matter present. Which of the following propertieo+;0 o;wrqwi* t2waras is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume the Earth hatxsc4g3+t 9an s mass xstg3 tcan4+9 $5.98 \times 10^{24} \; kg$ 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 isr-*e)kwn 4 rkz the magnitude of the gravitatio4rz-ken kw)r*nal 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 to13l jeycoc a2m6bf;3((vjdxk increase while its acceleration decre c mye3d a(ok1fcbj32(jx;v l6ases?

  00.11: A certain particle undergoes erratic motion. At every point in its motiorde is 3u2i,8ln, the direction of the di2rlue8 ,si3 particle’s momentum is ALWAYS

  17.14: A block is suspended in the ak8k:t3 x /lohair 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 ohl/38kat xk :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 follow) efua v68+uwn.opmjwm )f 0l2ing situations is the net force constantly zero on the objectoj)wfn 0e. f2va8m)mu u wlp+6?

  13.28: An object is in free falih7uxz7vt08:9wg wmh g+- b6v)ncvrgl close 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 accelerationv +6wvgg8vhbr7g9t 0:xm7-w ihcz u)n 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 equilibri.yfmr*z+ ado ( cof91gum has three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnit( 1z9yoa+df*mof.rc gude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can be combine :v. :onlqls,wto form a resultant with a magnitude of which of the follw :n:.olqs,vl owing

  10.06: Which of the following statements is most closely associatxr 71r: kzhvv;i 2ebq7ed with Newton’s Third Law of Motrv ; 1zhx eb2:7rqvk7iion?

  95.06: The reaction force does not cancel the a xye o icz4gloa*9-2a9 vswk/4ction force because:

  14.14: A box rests on the floor of an elevator. Tm;028vwvbw d1:a kg wjhe elevator is accelerating upward. Which one of the foljva 02mdv:8; kwwbgw1 lowing choices best 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 speed. Whici *k(,q7je w2bft wwq;h one of the following choices cob;2f tq i*wqj,(ew7kwrrectly 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 sp) /q;joxvwxd1)rvla k7i* rhz91 vc/beed of 35 m/s. The batterswings and hr7cjl91ov b) /ih* ); dxavkvx/r1qwz its the ball. The magnitude of the force that the ball exerts on the bat is always

  11.13: A physics book sitst (bb( puke(n(ib-e+ 219m5rbzyu uya at rest 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 that the table exerts b ab1b-t rmp(y(( 9b5ueunz2(eiyu+k on the book?

  05.06: The students in a Physics I class were in lab+ 8f4 fw zv ;7dn1jg88go)frrhbfdw:g 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 canfwzgfw:o7 gb8f8)4f+d8vrjn h d 1;rg the students make?

  99.03: If the net force on an object were doubled while u/su/clm /5fk2w i:hx at the same time the mass of /m w5uh /kul i:x/s2cfthe object was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accaq 24m*fcz i ui7:iqg0elerated uniformly from rest to a speed of 20 m/s0im4gfu*iazq2q: c7 i in 10s. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down tdw4.w)*3mx rk*ekrz) clh:/fs g(c pthe road. The mass of the trailer is 4 times the mass of the tractx /(z ekg*wch))* l. 4sfm kwrc:trd3por. If the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best ex ;(t5 vt.botwgkb)nm+plains why large tractor-trailer trucks generally acceler 5bot)g+tvm ;wt .kb(nate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink 6n ww8jbr) +y(y)idmk throws a 2 kilogram ball, giving the ball a velocity o(imrydy )6)8wb wjn+kf 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface of the earth with a we 3(xm dif 2uzs:tp6h:jight of 100 newtons is accelerated at id: s:jm6zt(3h fuxp2 $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated from rest by a constant f:bj9iekgis ;3 orce of 2400 N. What is the speed of the car 8.0 s af 3ijig9:s;ebkter beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides ac tfy)bqfj6x4pek .*l 8ross a rough horizontal floor before coming to rest. The frictional force acting on the block is 3.0 N. How far does thepfb) *y.tx4 6l8kjqf e block slide before coming to rest?

  95.38: A block with initial velocity 4.0 mtc6h,p8 cow,z /s slides 8.0 m across a rough horizontal floor befo,6p wz8 th,ccore coming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface 4 +z b-xntkhx 7crrbu+2po s*0-;t ecywhile a person pushes directly to the right on the box with a +r-4-es k7txpo bhuzcx0*;t r+yc2n bforce 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 accelerates uniformly to rest on a horb 6v z(pp 6(+6k rcq,2qnpzsgbizontal surface. The block travels a distance of 12.0 m during the slide. Which one of the follow66g+ v(c qsqnp(,6zprp2k b zbing 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 ap,rhghe,1or 8 speed v with its brakes locked. It then hits dry p,1opg e r8,hhravement 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 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 sp,a04( g(bd arfngzeee /.rx:ueed v with its brakesaxe ragb,gfzd .0ne:e( u(r/ 4 locked. It 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 mp6jxlirjht 4 dli 9j5r813z s2akes an emergency stop by slamming on the car's brakes and skidding to a8 jz4i36xirsh1dr5l j9t2ljp stop. How far would the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully coq x2*fz-sz9vqvyz - g,ntrol each of the following devices. Which of these devices can cause aq,-zvqgz s *fzv9y-2xn 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 newj*vxh/ sm* 7rwtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed fro/mw* j7h* sxvrm 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 floovkn*6wn3q srft0i++k r. 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 larg*+svn+t r3wqk f0ik n6e 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 saad34pu9def -38ckl fhows three roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevati-adfc3 apd el8ku934fon 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 showscyz-9vb)j, lq three roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts sty9cjlq)b z, v-art 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 friction; 1ams2ae ,-q*c-9scr ar qujelessly along the curved track from point A to point C under the influence of gracrs *ear,q-a9u;- 2a1m e jsqcvity. What would be the direction of the cart's acceleration at point

  02.40: A box with a mass*sth.9: 5nkfdsx 3hib of 50 kg is 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 coeftid s3h bn*:f 5ks9hx.ficient 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 av a f(v5.r.dlm 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 afd..l a vr(5mvfter a time of 1 second?

  05.10: A homeowner pushes a4g4eu9ky4 yrt ir,y)t 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 the following relations among t9r yy)eig4ttr4uk ,4yhe various force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crate on a table. Neither is moving. Wh4( bxug.zpktiw5m/v q 4q/ )apich of the fo/(x4q tv)/wika z.p 4bu5pmq gllowing statements concerning this situation is CORRECT?

  06.15: A crate of toys remains at rest fepefk1x9.xnbm) y - .on a sleigh as the sleigh is pulled up a hill with an increasing speed. The crate is not fastened down to the sleigh. pbknfy..f e19)-exmxWhat force is responsible for the crate’s increase in speedup the hill?