99.36: What happens t.xvz3 rj2/+rxs /t wlwo the inertia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one wqred swvb h-68 p,1ik)2kf(p that does not depend on the quantity of matterph8k(d12 qw)sreiwb,6 k -pvf 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 the Earthi3et.c2 h4 bd7bl2rq-uf)qyc has massh2y bq3q iu2bcr.)l c4etd7-f $5.98 \times 10^{24} \; kg$ 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 icd9m3 0(7/ ktm gqfjmln free fall near the surface of the Earth. What is the magnitude of the gravitational force acting on the earth by the s9kt /mqm0dgf 7j3mlc (phere? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velm;i;p tj rm(+)ejynf: /uqa9cocity to increase while its acceleration decreases?+n )rj(me9jpmt;yq: cua ;i/f

  00.11: A certain particle undzy+vp8oul5t1; hs1ox cd24gj 0 3f fsoergoes erratic motion. At every point in its motion,31 yffptcj o+u8doz2 5hvos;x0 sl14g the direction of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string held by -t1)drpf1xau3 rmaq do. xar,+u3sd8 a person. 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 Law pair force to the force of the s131r+drxpo,u).ar s-fax mqu8d 3t d atring on the block?

  07.18: In which one of the following situaq j4,q xfg:(jx6k he(ctions is the net force constantly zero on the obfq cj(x :4,jqg hk6(xeject?

  13.28: An object is in free fall close to the ground. A person iex6r hui2x 0,gntervenes and slows the object uniformly to rest. Which one of the following statements must be true about the magnitude of the acceleration of the objecteh2 x6ir, 0uxg 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 h:5i.gge p6((vp1yu0zx ltqdl :u2 gnforces, F1 of 30 N, F2 of 50 N, and F3 of 70qv65 en:ulg(u1p pihgdx zl(y:02g t . N, acting on it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can be combine to t0v2-niwg j:r form a resultant with a magnitude of which of the follor2j:g-ni0t w vwing

  10.06: Which of the following statements :w av n:6 jrvo+h+opd9is most closely associated with Newton’s Third Law of Motionp:v9+a v: ronohjd6w+?

  95.06: The reaction force does not cancel the actiof .qo3is/menmjxn 72 + lfs*m.n force because:

  14.14: A box rests on the floor of an elevator. The eleva4rw *6jh3l7ds) atz x9p+tan pd,l3petor is accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational for z+d9w,la 33l easn6) *tpj4p7x pthrdce acting on the box by the Earth?

  15.15: A skydiver falls downward throu 5ar()0r+* 2tcapza9mlnu3zugizh9 r gh the air with constant speed. Which one of the following choices correcmc 29ai0zrgu)+htul(znra5zp r 9a3 *tly describes the Newton’s Third Law pair force to the air resistance acting on the skydiver during the fall?

  06.08: A baseball is thrownqpe x1g*h ;62gnq i;gy by a pitcher with a speed of 35 m/s. The batterswings and hits the ball. The magnitude of the force that the ball exerts on the 1ygpng*ehx2q;;g6 qi bat is always

  11.13: A physics book sits at rest 5buez(s; we m92 np9ocon a table. On top of the book is a calculator, also at rescweb99pmnu;oez2( 5s t. Which 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 Ph;m( :xdgn60q) keyx gnysics 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 cd; gex0k nnxm):y6g q(onclusions can the students make?

  99.03: If the net force kh2 )pa+;*zu)dlhsuv on an object were doubled while at the same time the mass of the object wasa*2p;u z hvk h)sul)d+ halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 r xhveyvh dsg2*d .hh )9fnpa75d--8l kg is accelerated uniformly from rest to a speed of 20 m/s in 10s. T2frvh7 5ddx phhy hg. d)*s nl-a9-8vehe magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass of the t yld7ef.4 s8tprailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the traep7ty.s 4lf 8diler applies on the tractor is

  99.16: Which of the following principles best explains why larg( 3t9jka krjm3dfj y7+e tractor-trailer trucks generally ayk3a 9j dfmt+rj7k(3j ccelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a a : jp6:dpzjyz9frq ;52 kilogram ball, giving the ball a velocity of 10.0 m/s. Which stjjpa6zzyf 9:qrd ;:p5 atement describes the subsequent motion?

  00.13: An object near the surface of the earth with a weight of 100 newto+qjy3r8 rvv 5ons is a vyo jr83q5+rvccelerated 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 res-:kg 45-c jei*v tuhyj4q1wpgt by a constant force of 2400 N. What is the spg54 ipk*1w -y uj:h4q-cvtgejeed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial */f l+qu2wy whxp ovcj v4j( f.r7a7a*//vs fgspeed 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 fa aa/q ( focf7x.wg4l* wur/f7/y*j pv2hvjvs+r does the block slide before coming to rest?

  95.38: A block with initial ve qs 46+)ywcecb3wr;hx7onl/ flocity 4.0 m/s slides 8.0 m across a rough horizontal floor befo y hwwo3/qb4rc;cfl7n) xs+6 ere coming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface whi2doaxlpld7 +4pm 5c 2ple a person pushes directly to the right on the box with a force of 60N. The coefficient of kinetic friction between the box and th +pa2pcd 5xp72omd ll4e 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 initizrkcbv ;(kau :d47 rub-s,ih5ally moving at 8 m/s accelerates uniformly to rest on a horizontal surface. The block travels a distance of 12.0 m during the slide. Which one of the following choices best represents the coefficient of kinetic frictia cuh7 -r5bvurzsi b:kk,(d;4on between the surface and the block?

  00.21: A car of mass m slides you(g: dp*opd* woi j-/fd /6yacross 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 kinetic friction betweenwf*pyd:/o6do*o/idy g- p(ju 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 with*0sz: ymtgn2 r its brakes locked. It then hits dry pavement and skids to a stop in a dz2nty:gms *0ristanced. 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 makeshm y5 d7zd8ktw w)4an( an emergency stop by slamming on the car's brakes and skidding to a stop. d tw857mz wd)ha(4ynk How far would the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an autp8unu f h 2294uwcesc6omobile must carefully control each of the following devices. Which of t c6fups98cw22 u4hu nehese devices 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 15000 gwv) xn,lw4buy0 h/i,yo8x/dku7r 0g newtons is 24000 newtons. About how much time is needed to increase the roc/yig0 u x,w u,)b/0yh4 rdvg owxlk7n8ket ’ speed from 12 m/s to 36 m/s near the surface of the Earth at takeoff?

  07.21: A box slides to the right acrosd j3612fer,88mzoi xa p bwjr:s a 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, wopjbdwx 6iz 38ra:em 2 fr1j,8hich 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 .tn/ sp6gzj,avy 4eg )coaster tracks 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 tt/,nsv ez46gy.a) pjghe 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 rollerwlwao) d3dlaxdu3a.t .-,ia: coaster tracks of equal length. Assume that on all tracks the roller coaster carts st.ta dd,a:d3- .wuli )lwxo3aaart 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 zigwbbinb(1. kq8,s ;g8ff6icartrolls frictionlessly along the curved track from point A to point C unf qzb ,6ni(8sb1 g.;gikwif 8bder 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 ropek+cwm/d27 3o-be oxw n which makes anomc3b oe2/w-7d w+kxn 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 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 waltuz5q0pd tj23yl neqvz7 p603l by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coeffi3zuld50v3nz276pjtypq0te qcient 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 v wbr9d.v4byc zf t*h75rv.s5of 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 amo5vzv 4*v9 h.bs fbty.57drr cwng the various force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crate on a table. Neither is awpn/-e cs 3i6vk3;kx moving. Which of the following statements concerning this situa36w k /i3c-pvnae ;kxstion is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleighyk 6+yde-.q 6niu 8gm 3d5pfiq is pulled up a hill with an increasing speed. The crate is not fastened down tou.dyq-y d6mp3ii6qn k85 +fg e the sleigh. What force is responsible for the crate’s increase in speedup the hill?