99.36: What happens to the inertia of an object when its velocity i2jz r*fhq*vxphx47 v8j-ria* s doubled?

  02.14: An intrinsic property ob 15p0-.lmczqljgde4 f matter is one that does not depend on the quantity of matter present. Which of the following properties is NOT an intrinsic prl ce.15q0lzpg4dj m-boperty?

  04.16: A 20 kg boulder rests on the surfae;f0o0j 7gf 5*fhxh7 oju8b tft ;l4jjce of the Earth. Assume the Earth has massj7ofuoj0h fe;4 tl fx0 t8* jjgh;bf75 $5.98 \times 10^{24} \; kg$ 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 spher2rrsir ,tb (sj+l7zs, e is in free fall near the surface of the Earth. What is the magnitude of the gravitational force acting on the earth by the sphere? The Eart,ls (sszr t,2jb+r7rih mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to incrg8kahb)nae9j, : ,npf ease while its acceleration d)n,8 bkpfj :,ae g9hanecreases?

  00.11: A certain particle undergn: .xj.ai emny+d+ nv*oes erratic motion. At every point in its motion, the direction of the particle’s moment*i .x +yev:nd.n jnam+um is ALWAYS

  17.14: A block is suspended in the air at the end of a string held by a pe:s85+ocizvrk8 kxk*m z :l e- 7g9stkcrson. The person pulls on the string uniformly accelerating the block upward for a short time. During this time, which one of the following choices correctlyk rc 5 k zs8cix:kgtz9-+8:ml*eov k7s 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 constao,u3sswgl 1fm/m .a :lntly zero on the object?3u: lgls1,saommw/ f.

  13.28: An object is in free fall close d2 7f rae)w4)vm/d8z:osks gnto 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 it is being stopped by the person? The magnitude of the object’s a)sk4we f/sdz7 vmr2ado8:n)gcceleration is a and the magnitude of the acceleration from gravity is g.

  98.03: An object in equilibrium has three2 y8pbptb5lnkqla*4- *lm vy. forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitude of the resultanya*ll8 2p. t-mb5*kvbnlp 4yqt ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 (r k:m9qvex l *(h0e6oiuta4nnewtons can be combine to form a resultant(l0*:m 94ut nxehokqi(ev6 r a with a magnitude of which of the following

  10.06: Which of the followingoz7+ vmd9n rfn5 hu43i statements is most closely associated with Newton’s Third Law in39+o 5nrz dh4v 7mufof Motion?

  95.06: The reaction force does not canciuzirh69 vc32 el the action force because:

  14.14: A box rests on the floor of an elevator. Tq. ra lho9ek* 2y7ic0ehe elevator is accelerating upward. Which oneq9 cr2i7eek*ha0. o yl of the following 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 sprprg ktf/36 f ,l1:r9awp4 i gwqk*i9zeed. Which one of the follorp ww 9k/tfk3f4 6ir,q*rz 91igl:gp awing choices 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 of5eo,o k4zeh- atd4x5e 35 m/s. The batterswings and hits the ball. The magnitude of the force that the ball exerts on the bat is alo4xeo,k 5- det z5e4ahways

  11.13: A physics book sits at rest on a table. On top of the book is a cc2tcxmp b*r47i7i)/t jwij / walculator, also at rest. Which one of the following choices is the Newton’s Third Law pair force to the foictt4 / w 7/pi)w7rcm *xij2bjrce that the table exerts on the book?

  05.06: The students in a Physics I class were in lab conducting an experim,ebx m31do2bzpyr9 o. ent related to Newton's Second Law. The collected data were displayed on the graph at the right. From this graph, what conclusior2 93obyo d,bxepmz.1ns can the students make?

  99.03: If the net force on an object were doubled w ;g,l rpc01jpcawlhj(9/h3p -erqzx4 hile at the same time the mass of the object was halv 9;phw jqp -,xl cr(zpl0ar/hg 1c3je4ed,then the acceleration of the object is

  96.15: A car whose mass is d9n;rpt 4gd; lq3s/tz1500 kg is accelerated uniformly from rest to a speed of 20 m/s in 10s. The magnitude of the net forc;d4t;pqd9z/nst rg 3le accelerating the car is:

  99.05: A tractor-trailer truh tl jo0ciz4))ff-lb)4t fpt 9ck is traveling down the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward4pft)h ol4b l0tcz )) 9-tijff, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explains why large tractorfhxc:n :zwq:fr+wt o5j e* xck+ v,48n-trailer trucks gfr:*eqnv: :8 c hj znc4k o,w5f++wxtxenerally accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictz2*q5 hro3w.jww7q;h gbw n)bionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m;*qoh hww wb5zrq2)3wg bnj7 ./s. Which statement describes the subsequent motion?

  00.13: An object near the surf-cl8f oixd0uxcu:)w9et(v 0c2pnq /oace of the earth with a weight of 100 newtons is accelx8q 9: td cx(2) up0nufwcc-vi0eo ol/erated 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 +h9c h/hgfy) nq 2oo5lrest by a constant force of 2400 N. What is the speed of the car 8.0 s after be2o+5ofh)n/lh q hc yg9ginning?

  98.32: A 3.0-kg block trmz6/(l*m3,)ouz; m qb a5q i9vfgxvwith initial speed 4.0 m/s slides across a rough horizontal floor before coming to rest. The frictional force acti;q rmi5vm*vz/ 3,)uqatgbm6 ozf l( 9xng 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 sl1cryd p/p)u -eides 8.0 m across a rough horizontal floor before coming to rest. The ceu1 r-y d)/pcpoefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal sury opw;4ijh2h m yp7n-5cf)g9 aface while a person pushes directly to the right on the box with a force of 60N. The coefficient m ;5o7ijhycyw2n4p 9gphf -)a 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 accelre*zwtwor.7gil0sn + jp8 seg71pu(,52 yuag erates uniformly to rest on a horizontal surface. The block tra j0 p(. nrp7l8,+wiezgurt7e 2oag yg *s51swuvels a distance of 12.0 m during the slide. Which 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 ice at a spr 9c2 5jy7pk /sl6tnomeed v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficso25p6y/k j mnrlc9t7ient 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 ;ovt 08ou7j hwspeed v with its brakes locked. It then hits dry pavement and skids to ;8uw0otov 7hja 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 cawe; /at)u/2 zv9rzq per makes an emergency stop by slamming on the car's brakes and skidding to ee2r z )t/aqup;/9wzv a 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 control each of kw ry q4w7yyjc()kb5,the following devices. Which of these devices can y(ckqjkb4 y)w7 ,ywr 5cause 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 x3 ,/rh2himkjc d1xs( with a weight of 15000 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 surface of the Ear(d , x/hr1chi2x kjm3sth at takeoff?

  07.21: A box slides to thh-qqb2xjn /0m e right across 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 x 2n -/qbj0mqhleft, 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 the box.

  02.27: The diagram below -s7fw* y+sxmtc) 7n meshows three roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves f 7+xm7ss)* nt-wcmye 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 twl4 yn:hla3t: racks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frich :4wtly3 nl:ationlessly 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 frink sprlm,7xk4 +8oc4k/cj:4 sag+px1 dp y;csctionlessly along the curved track from point A to point C under the influence of gr:p4ypc+cs+mk/g k4p8j1a7 x 4kls cxnsd o ,r;avity. What would be the direction of the cart's acceleration at point

  02.40: A box with a mass ol v7) 16zc:dvtkvr2 lgf 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 coefficient of kinetic friction between the box and the floor if a 250 newton force on the v: lcvzg7d )k2t1rl6vrope 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 resfxh(p0uf 91 ggt is pushed against a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of static fxggu 0 91(ffphriction is 0.50. What is true of the friction acting on the block after a time of 1 second?

  05.10: A homeowner pus(p7q zoi3-6w fw-m;efvk*n j jhes a 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 the various finz q mwwvjp3-f7j kf*o-(6e;orce magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans again+gg l qrst2ib)j,y *)9nuzs k2st a crate on a table. Neither is moving. Which of the followin9kbgzl)j2 rsg+2sn)t i, y*qu g statements concerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is pulled up alw8 r6wn; 5xna hill with an increasing speed. The crate is not fastened down to the sleighwn 8an56wrlx; . What force is responsible for the crate’s increase in speedup the hill?