99.36: What happens to the inertia of an objecb2en3 yah*z 3bt when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not depend on thwr0 /sp(a v1 yg yho41w;da )qpyckj/0e quantity of matter presewcr a k/y/oa0;pv j(1ws)04 dypq1hygnt. Which of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume the Eaqfoi*ti- 3( hfrth has maso-*ti (ffhi3 qs $5.98 \times 10^{24} \; kg$ 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 Eazf8 y-1 s)r+p;p-comcub ug:e rth. What is the magnitude of the gravitational force acting on the earth by the spherby e+:r- fz po)smc81 u;p-ugce? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an *vttasec ck.fd53 (q+object’s velocity to increase while its acceleration detf3+d sk( ect.acv5 q*creases?

  00.11: A certain particlep7q0mv q iji69 undergoes erratic motion. At every point in its motion, the direction of the p q67qj9impv 0iarticle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a -l)8,h 8 zeskuyh kw5wstring held by a person. The person pulls on the string uniformly accelerating the block upward for a hwk uwe8k z- 8,hy5)slshort 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 of the following situations is the net force constantly zu1v+y* /xxw 4tdfsx rg2y7s)l ero on the object? u yd*427/rywxs+ x)vg stfxl1

  13.28: An object is in free fall cj7 n3)5/ya m+a gaeawwlose 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 acceleration of the object as +7wa3 gaaey)w/jm na5 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 forces, F1 of 30 N, F2 y (7/3dbj dfhjof 50 N, and F3 of 70 N, acting on it. The fbjhyj7/( 3dd magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force ofp.4xsdn.,z8 epm lk2c 10 newtons can be combine to form a resultant with a magnitude of which of thd.k zl mcnp.pes28x, 4e following

  10.06: Which of the following statements is most closely associatex84t cidqu(,hn kt 1)t0,bz ypd with Newton’s Thirdki8tdhct,z0 xb )tu q 4npy1,( Law of Motion?

  95.06: The reaction force does not cancel the action fa:t.ygf*ddf,v* ad3 0wixuukt c)+ m *orce because:

  14.14: A box rests oc1;ja*d-joh zn the floor of an elevator. The elevator is accelerating upward. Which one of the followinj 1choa;- dz*jg 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 t,rj74rn)u c2cp p +lxjhe air with constant speed. Which one of the following cho, curjrn7 +pp42cj )xlices 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.vjbjg 4hs:mk68q)-+ za 0qhuz The batterswings an6:q- 8h vku +a)jh jz40gqbszmd hits the ball. The magnitude of the force that the ball exerts on the bat is always

  11.13: A physics book sits at rest on a table. On top of the book is ;h esmz o(kwdjh ;bhh.7)+s -ma calculator, also at rest. Which one of the following choices is the Newton’s Thiw;zkdj7h(.sh)me- hm;sb+ o hrd Law pair force to the force that the table exerts on the book?

  05.06: The students in a P.7 +ce jvgmu.chysics I class were in lab conducting an experiment related to Nec . +j.mcue7vgwton'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 onzlomk 1e d*zoz ukawq 23z1j8k+9o+zzik4u *1 an object were doubled while at the same time the mass of the obk uk**2 dw11z o418m ea z zuo3zq+9+zokizjklject was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly from rest to bsi d7gj1,. 8pye0d las1 uy8sa speed of 20 m/s in 10s. The magnitude of the net force acc i .e0y pu,ld7gds y181bsj8aselerating the car is:

  99.05: A tractor-trailer truck is traveling down th v l:vee;fiite1b:-2 j 2lxk6te road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the trailer applies on thi2 e 12v:;vbeke -xfj6 :little tractor is

  99.16: Which of the following principles best explains why largt 8sk kiv, ,fs-fm--lcul9v6ce tractor-trailer trucks gvmfs6fki,u -8c-9 kvstl-c l,enerally accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skateduukk + d8,s-cr at rest on a frictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0k-k u sd+cud8, m/s. Which statement describes the subsequent motion?

  00.13: An object near the itvv1 j,z0,wqsurface of the earth with a weight of 100 newtons is accelerated av w,qvzj, it01t $4\;m/s^{2}$ . 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,( *dplxbp uh:orce of 2400 N. What is thp hlxp,b:du (*e speed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with rqwvw ,kai5j x+p.5s :initial speed 4.0 m/s slides across a rough horizontal floor before coming to rest. The frictional force acting ona5rqx.wpkj:v,5w si + 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 0znuo3 xp*+ip slides 8.0 m across a rough horizontal floor before coming to rest. The coefficient of fricuon+0i xpp*3ztion is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a person push yd+( ln7ex5+ve r:tk,y )lchpes directly to the right on the box with a force of 60N. The coekey+t re x, y5lc:dnvph+(l)7fficient 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 tdhbvk4 bp3b )tvz :,2io rest on a horizontal surface. The block travels a distance of 12.0 m during the slide. Whic)2 ht: ,pzvbkv3ibd4bh 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 ddq w2/rpc2.ro;bj9q ice at a speed v with its brakes locked. d9pd qwqr/ r.;c2job2 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 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 speed v withx p(-ba42uekt its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kineti-tkp(2 u4ebxac 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 emergen l4th;ydmxf+r.wd1t t ; uo;p-cy stop by slamming on the car's brakes and skidding to a stop. How far would the car have skidded if +ld1-tp ;m;turwdf;yt4h x.oit had been traveling twice as fast?

  99.39: The driver of an automobilej,yub)y *j,jexz4r) i must carefully control each of the following devices. Which of these devices)ire yxj *4zuj,b j),y can cause 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 156skmyw; r9-x rb.*yuu000 newtons is 24000 newtons. About how much time is needed to increase the rocket ’ sr -mux*6 yskbrw.9yu;peed 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 alf 9u wjr*y f;avl5k,jq;/rm ( horizontal 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 ;f k *;wulra(,vj 5flm/jq9yrhalf 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 s;x9luw/ (piew l*4jud *k hz1vhows three roller coaster tracks of equal length. Assume that on all tracks the roller cx9p*kidwv(* ehulzj4 l1 u/ ;woaster 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 ty9vy msd5t7e6yjc k,;racks 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 tjd97mevs6c t ,y yky;5he 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 frictionlessly along the ca b qnc3hz0v73d pfa ln,)t+t-urved track from point A to point C under the influence of gravitp)l +nb tn3z-hd3a7cvf q,t0 ay. What would be the direction of the cart's acceleration at point

  02.40: A box with a mass of 50 kg is dragged acr3ods+t1l2p8r/2glp l jx1eoqw nce+ 1oss the floor by a rope which makes an angle of 300 le3o+c plx 2/1w gp1r8q2lo1s d+j net 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 speed of 20 m/s as shown in the diagram?

  04.40: A 6.0 kg block initially at at/ zznmt7t8:kjf7q5;xsq 2 f rest is pushed against a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.;7m f52txzs :nq8q/ tzk7 tafj30 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?

  05.10: A homeowner pushes a lawn mower across a horizontal patch n-e24qu arm. gof 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.gu2e-4 q rman various force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crate on a table. Neinaz;of a 7cg;ilhs9;. onau5)ther is moving. Which of the following statements concerning this siaf5 .7zal uc;s9;na)o ng o;hituation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh7qvj c ;e ro,g(:zjv3qe) (ht4q+ xqub as the sleigh is pulled up a hill with an ine 3v;o zb+7cjjxg(: rqtq4qh( q,)ve ucreasing speed. The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?