99.36: What happens to the ineq+/k *lod05xy9rax i xkt f g*d;as/x/rtia of an object when its velocity is doubled?

  02.14: An intrinsic property h0(s*6kcixs2 r0frz 0vcs mw/of matter is one that does not depend on the quantity of matter present. Which of the following properties is NOT an 6sm shc (0w sc/vizxrr0*kf02 intrinsic property?

  04.16: A 20 kg boulder rests on t31;cih u9m/gsrv mg; rhe surface of the Earth. Assume the Earth has mash;9g s1ur;m m/vgic3 rs $5.98 \times 10^{24} \; kg$ 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 fall2otuac0t+ 6vy/ e hu8a near the surface of the Earth. What is the magnitude of the gravitational force acting on the earth by the sphere? The Earth mass is te6u uoya 082tc/ ha+v $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to increase while it+ae 5(brw i7zzs acceleration decre z5bia7(zr+ ewases?

  00.11: A certain particle undergoes erratic motion. At every point in itj/9y( a ab72s7cl hnhas motion, the direction of the particle’s momentum is ALy7l c(a2hb sna79/ hajWAYS

  17.14: A block is suspended in the air at the end of a stri;brqrzc8tw8 3 ng held by 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 stringc tzb88q;w r3r on the block?

  07.18: In which one of the :zbgz)yk;9ais *( bed following situations is the net force constantly zero on theds :yk)z9b;ea(biz g* object?

  13.28: An object is in free fanr5d(f/o1p rdl;tncq8; ly :r ll close to the ground. A person intervenes and slows the object uniformly to rest. Which one of the follo8r n:n5dc( rl/1;dr;qofptl ywing statements 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 equilibrium has three forces, F1 of 30 N, F2 of 5mz6 1khuxn7 t1 *mdzs)0 N, and F3 of 70 N, acting on it. The magnitude of the resultant ofF1 and F2 imd*1 km)szxh1u7 6 ntzs

  01.07: A force of 6 Newtons and a fu3u( t,njm 5bl-6wzsk+v7 mk4wlw sg2orce of 10 newtons can be combine to form a resultant with a magnitude of which of thg lmk6sv4 u z (swju35ml+-,bwnw7t2ke following

  10.06: Which of the following statements is most closely associated with e0)s7)pexvio ) 5cfj9yms7b fNewton’s Third Law ofic)spse b ef o50v7y)xfm79)j Motion?

  95.06: The reaction force does not cancel the action force becaur .kl ica4npr*8sye7-se:

  14.14: A box rests on the floor .tig t-0d95 s lgn8qnbof an elevator. The elevator is accelerating upward. Which one of the following choices best re9t gqbl8 dig -tn.0ns5presents 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 chl9 xf4ymte*t ac-xs f.no:.pa7 2tu 9onstant speed. Which one of the following choices correctly 9pft 9at2x t.ho4:a fmu-c*lys .exn7describes 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 aa(mar ow3ft0 4 speed of 35 m/s. The batterswiaw ro 4ft(03amngs and 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 bo 9mxlh wx2ehsee8+.o v7o*9 xcfi0z-s ok 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 on the boc s ohx 0fo -esilxmv.99ze*w+8x2h7eok?

  05.06: The students in a Physics I class were in lab conducting an expeobfil 2*:hg 3 7*jemydriment related to Newton's Second Law. The collected data were displayed on the graph at the right. From this graph, what conclusions cgb el2m7dfjo*i:3 hy*an the students make?

  99.03: If the net force on an object were doubled while at the same time thh 9c3eln 1e0v(/ qop1o0yy tbhe mass of the object was halved,then the acceleratioc(hh0e9 oyp 3v/enql11 ty0bo n of the object is

  96.15: A car whose mdxv(g,k6 ji ;utfs4,4 :baym xass is 1500 kg is accelerated uniformly from rest to a speed of 20 m/s in 10s. The magnitude of the net forcxj(k4yg,4b,miautx:v f; 6 sde accelerating the car is:

  99.05: A tractor-trailer truc*mwue3 9min;kn2 f8hp m7/t a frgu-*jk is traveling down the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the traile te3kn a uj**f g/7mmr9f;28wp -mhniur applies on the tractor is

  99.16: Which of the fo2 ymr9;olsxl g 4b+r2ellowing principles best explains why large tractor-trailer tx2 rbm l2gl9 o+r;e4ysrucks generally accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictivqx+, q x70jxq36iial pqeydp1**av/ onless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement describes the suqqd1 aqx,v/plix vj*pi+ * 0qy3 7x6eabsequent motion?

  00.13: An object near the surface of the earth with a weight of 10vnw1p n6t/kt2,mziod ogh 1+mk /f* y+0 newtons is accelerated g +io 1 f+n1t/o6kzt mn*/,kyp2w vmhdat $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated from rest by *aodj3 9+sifxw 6 9cnua constant force of 2400 N. Wha x una9i oj396+*wcfsdt is the speed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a roughe,pv(ker ul 6. horizontal floor before coming to rest. The frictional force actingel ,u.6v kre(p on 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 slid/k mfc4j.qy xnq7e3x +0q-xgk es 8.0 m across a rough horizontal -.q7gyqfjqx0 xne3+c xk/ 4mkfloor before coming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rea v7cc-dtxqe7q 4hpn3 eu.:b0 st on a horizontal surface while a person pushes directly to the right on the box with 3-ee.4n q 7vxacdu0:cqptbh7 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 accelerates uniformly to res,5x 00 r1ihja5l3rvipbs/r ew t 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 friction betwe/w1absiej,rv lx55i p3 rrh0 0en the surface and the block?

  00.21: A car of mass m slides across a patch of ice at a speed v with ig*o2+rvd y vlzw7m)4its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic friction betwe+dgroyv*2)mv zil7 w4en 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 wl5 l*ii h9/xv .q5j sgni4.tzjith its brakes locked. It then hits dry pavement atl*/ji.g4jvq x9 5s5h. nilzind 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 makes an emergency stop by slaj : qwrbso,n5fmj tup8+j;l5;mming on the car's brakes and skidding to a stop. How far would tso58m jn rf,t j;jl :w5p+q;ubhe car have skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefulqfd2w tr(k j jp42l/i.ly control each of the following devices. Which of these devices can /2fj2 d4(tlr .i jqwkpcause 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 1500zdf :rhja4l6*0 newtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36 m/s near the surfac4rld6 f h*z:aje of the Earth at takeoff?

  07.21: A box slides to the right across a horizontal floor. A person called Ted *hb ,u4qbe /dxx(kj1yi g2 yq+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 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 t/(k2hgq bxeq,xb yyd *1j+4iuhe box.

  02.27: The diagram below shows t//xozxm x9iqaq 1pkd 7:/kd2a hree roller 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 the f xx/ x/d2oa/dz:qk7q 9map1 ikinish.
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 tracks of equal lengthzmalstd.mst b*awzeyc zk1;/ 25o(m0+ +jwn0. Assume that on all tr2m; y0 mansjb 5zww/k(soadml z01*etcz.++ tacks the roller 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 rollercoaster cartrolls frictionoet 3da tcw0ar8(dlszej9.;rv( au3y03ec5 n lessly along the curved track from point A to point C u(aes e;lyt8 03 ca 9oazcr0w nved3u(.t5j3rdnder 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 fyo3 rqopb:-n7p m.z2+y: .csr;vdh nqloor by a 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 thpy rq:. ; s.3 ynohzc7 mq:v2dnr-bop+e 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 initialwue7g.8- hon64.o a bhp:gxeoly at rest 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. Whgxa 8e.g- ophbwh.:on e 7u64oat 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 g4oh mo / tt)1t+t4trgnrass 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 ag tt )1tm h/4too4tnr+mong the various force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crate on a table. Neither is movinz1jv km 265-o7oo,z 9x ayqochg. Which of the following statements concerning this situation is CORRECT?qxj hcyz5omvo62 k17oa,9z- o

  06.15: A crate of toys r mwkr5c2/- h,v*. xjyjei*eus emains at rest on a sleigh as the sleigh is pulled up a hill with an increasing speed. The crate is not fastened down to the sleigh. 2r-uc 5,he.wx*/kjj im*vsy eWhat force is responsible for the crate’s increase in speedup the hill?