99.36: What happens to the iner/jub5r n.zi7 snuw6y, tia of an object when its velocity is doubled?

  02.14: An intrinsic property of mattri(b .mun 7j*ter is one that does not depend on the quantity of matter present. Which7 mi*.n(r ujtb of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Eartx-m a41jok xlasp gf6z5 268uwh. Assume the Earth has ma8xsza2j1u6pgfkam x-54 wol6ss $5.98 \times 10^{24} \; kg$ 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 t1)tu kj o6xq u9juq0tx1y.5pthe magnitude of the gra0 1jxt9kp6tqu1ut)yoq 5jxu .vitational 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 to increase while itsdav0gm,5cnd u-3de v- acceleration decreases-evdd 0u-,d5cm nag3v ?

  00.11: A certain particle undergoes erratic motion. At everybzt94eu/aq :al it,m 4 point in its motion, the direction of the particle’s momentum is ALq:a,4a b4 ltem9iu z/tWAYS

  17.14: A block is suspended in the air at the end of a string held by de vm5ns 9p-e: nc8ve7a person. The perso5 :svn8ee9- npvecd7m n 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 string on the block?

  07.18: In which one of the following situations is the net force constantly zeroti 4uv7y k1n.w onnvu 7wti4yk. 1 the object?

  13.28: An object is in free falki.-v8j 7mjgt3n9jcn l close to the ground. A person intervenes and slows the object uniformly to rest. Which one of the ijvg n8j93j7c -nmtk. following 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 50 N, an f- 7+raahia.6jvxbcoi2g2b.d F3 of 70 N, acting on it. The magnitude of xg..+i6ba r hi fa o72vc-b2jathe resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons ccx*84qfp wi zekc;t44ohckq2:. t4dju;7fu zan be combine to form a resultant with a magnitude of f*zqf dck:zq4.ui4 c4w4;; 8htetkx27pjcouwhich of the following

  10.06: Which of the following 7eg3a amjr,*qkz3t*g statements is most closely associated with Newton’sr 7zk 3,*a*3mggteaqj Third Law of Motion?

  95.06: The reaction force doqay/1xh3kjg22m j* qe pl6d c:es not cancel the action force because:

  14.14: A box rests on the floor of an elevator. The ele (y/ot-vs(oy .e(afp xvator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational force acting on the box by the (ts(o f(a ype./vx yo-Earth?

  15.15: A skydiver falls downward through the air with constant spee oxswym.wq(n6f6yz94d. Which one of the following choices correctly describes the x6z4n69( w y sf.mqyowNewton’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 speedaik. q9qb*2raxx 42ullb.:wb of 35 m/s. The batterswings and hits the ball. The magnitude of ..wla2kxuqil4x bb*: q a9 rb2the force that the ball exerts on the bat is always

  11.13: A physics book sits a.j o 8ljbxd+bvdlb2*.z / c+dut rest on a table. On top of the book is a calculator, also at rest. Which one o. +8udj.*bvc2 d+jlzblxo db /f 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 Physics I class were i yjnp9um)y 83pn lab conducting an experiment related to Newton's Sec p9nyuy3)p8mjond 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 on an object were doubled whilefdi /(r 8r4xge at the same time the mass of the rd8fig(/re x4object was halved,then the acceleration of the object is

  96.15: A car whose mashvl,z y.)ifq uyw7(v (s is 1500 kg is accelerated uniformly from rest to a speed of 20 m/s in 10s. The magnitude of the net force accelerating tuyyqvlv)f, iw.( h 7(zhe car is:

  99.05: A tractor-trailer truck is traveling down th 1 8,km)2 hm0 ;pcyujb*izhqzge 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 the tracth21pm ; uzhmq0 8ckz, bi*)jygor is

  99.16: Which of the following prt j7s/m(v e3u8 .wyxlbinciples best explains why large tractor-trailer trucm3b jve/x.8 t7w( ylsuks generally accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at0em;f.oycqko fj001k6nmz 6iq- vyr)/n4 uzr rest on a frictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/cozmk6k 4nyuqqr 0-)0;e/ oyzifmj0n.v r61 fs. Which statement describes the subsequent motion?

  00.13: An object near the surface of the earth with a weight of 100 newt+1pc8su sukzle rh* we4:r-:m ons is arkswl:h4u*s-+r: epu8 e 1mzcccelerated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kgspilzd h -aq2k3bc417 is accelerated from rest by a constant force of 2400 N. What is the sb2c -pq31adkz4 i7h lspeed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides acros.ke9zngjr8 x)ywvr / )go,p s1s a rough horizontal floo9r)p/ezw1 ,nkov.s) gy8xr g jr before coming to rest. The frictional force acting 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 slides 8.0 m acro6(i)dd:cq(h zmr r8o oss a rough horizontal floor before coming to rest. The coefficient o8 hrimzr d:qd)oo c6((f friction is:

  09.21: A 20.0 kg box remains at rest on aluafr xiow.u*4.t,jum0b 63 u horizontal surface while a person pushes directly to the right on the box with a force of 60N. The coefficient of kinetic friction between the box and ub .tuj0ixw6u mo4*u3.l rfa,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 unif 8jnrhb;o.e8vn3lp n9ha-, kmormly 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-e8;ma9rnnhv,8h nklp3.o jb represents the coefficient of kinetic friction between the surface and the block?

  00.21: A car of mass m slides across +h fdlp*eu g zc9k15nh;g+q6sa 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 betwegc1dz*lkgf6 h 5+;q nus+h p9een 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 its braket9oie - gvf(e5s 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 eevt9g i-of(5 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 slamming on tz 5ten6de v.x l)z)yx,he car's brakes and skidding to a stop. How far would the car have skidded if it had been traxx,. n6v ze)lyet)5d zveling twice as fast?

  99.39: The driver of an automobile must carefully cont7g8d:ri9 q6 nvft(iyqrol each of the following devices. Which of these devices can cause an acceleyqg9n( r6:8tq idvi7f ration 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 newtons is 240007bj3i(-zx hq x0ubv+a newtons. Abouzxxvq i+jubh 0(ab -37t how much time is needed to increase the rocket ’ 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 across a horizontal floor. A per, i2u2+ob:9pekb7 o.6r2excfo knebhson 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 large ekck22.b o2xf7u pn:re6h+eib o, 9 obas 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 tracks of+f 1fm4il jdr5h7o vs c 9qh7d+ph1:rf equal length. Assume that on all tracks the roller coaster carts start fromvr fi9sdjm71cl1 hf:+ qh fhd+5pr7 4o 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)wn e(jq18bo 2q7ao2ygpuhda07 4qxx coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and mov )neo42(7 a2xhq wg7y1qbuja0 x8qdopes 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 frictionlessly along the cur41u l osegkt5(7a ov+kved track from point A to point C under the influence of gravity. What would be the directioa5s4lgu1vk+7 ( ooetk n of the cart's acceleration at point

  02.40: A box with a mass of 50 kg iqdfxbfmfjwn, 3e/r1 :1/fj /es 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 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 constanf/frxq1 ,f 1jf:/3ebwn/ medjt speed of 20 m/s as shown in the diagram?

  04.40: A 6.0 kg block initiall- 1h6zgw0xqvpohm33x gx(8xfi8wr3 l w-v ou3 y at rest is pushed against a wall by a 100 N force as shown. Thecoefficient of kq6o3- pxgwr 8 3f x31w 0xg xmhvvu8l(z3woih-inetic friction is 0.30 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 across5wq9xgh;i r(ex6s al* 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 necessg5;e6a *il sxqw9h(rx arily 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. Which of theq(t-tnema8 :zcji , 9z following statements concerning this situat(,8iz:t-n 9zct jea mqion is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is pull5bw xi;ny;pnj55t; bped up a hill with an increasing speed. The crate is not fastened bp;;5yxjwt n 5p 5bi;ndown to the sleigh. What force is responsible for the crate’s increase in speedup the hill?