99.36: What happens to the inertia of an,pezqmokh44 65ux mx* object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does n595,3/z iqy9nywcyj dc zo5f rot depend on the quantity of matter present. Which of the followini59z3d j ,nwcc9yyrfoz 5y5 q/g properties is NOT an intrinsic property?

  04.16: A 20 kg boulder sd j1ti86ri fh u1kz8+rests on the surface of the Earth. Assume the Earth has makdzi8ur 8t11h+fi sj 6ss $5.98 \times 10^{24} \; kg$ 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((9jr devf nnnga7k d7r74(ao free fall near the surface of the Earth. What is the magnitude of the gravitational force acting on the earth by the sphere? Thgan7rjnnde7a( (or4fk (d97ve Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’c bvjhfcd(adm0l +z.wc* e404s velocity to increase while its acceleration de0 l 4v+d abw(cj c0.*zfmcehd4creases?

  00.11: A certain particle underk 5/a-/k u/rqxxi3 zwbaqie:vc)c0 49r r m)wygoes erratic motion. At every point in its motion, the direction of the particle’s momx9/3qra wbyri a c4mq:)r )//zki-5c k0xwvu eentum is ALWAYS

  17.14: A block is suspended in the air max7sr ., g+p3 lvb)2bbkhsni6dmt.;at the end of a string held by a person. The person pulls on the string uniformlytp ib2a+x) ,vrns..7 m 3gblbk;h6dms 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 f2atozk65 rer0t5cgdh)jvp* 4 ollowing situations is the net force constantly zero on the zeg25v*5 6r0hkjr)tt 4cpdaoobject?

  13.28: An object is in free fall close to the ground. cvz-fe m2 i5/s/gqp( kA 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? T vp2s/f(mq- /kzigec5he 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, and r3 xp5gi (9:g tpnrx,eF3 of 70 N, actixt5 pn(,x:prggi9e3rng on it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtoixq8kx/ nw f *--ey*ojns can be combine to form a resultant with a magnixj 8yf --wn*/ *eqkoixtude of which of the following

  10.06: Which of the following statements is most closelyn 6koxry(1z um1 id:7q associated with Newton’s Third Law of Motionk1nx7idyrm6:uqz o1 (?

  95.06: The reaction force does not cancelkux 74dx07qevq9xu t, the action force because:

  14.14: A box rests on th w*n.u6l-aemap45 hkf e floor of an elevator. The elevator is accelerating upward. Whikp*e hnf5 l wamu6-a.4ch one 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 cons/cpwwtd r e.-4tant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance pw4ted- wrc/.acting on the skydiver during the fall?

  06.08: A baseball is thrown badm-z8e3 +g xfy a pitcher with a speed of 35 m/s. The batterswingzm+e8 xfda3-gs 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 w h k vnl;8y:u53nyk)etable. On top of the book is a calculator, also at rest. Which one of the following choices is the Newton’s Third Law pair for)h5 y eu;nykk3n v8lw:ce to the force that the table exerts on the book?

  05.06: The students in a Physics I class were in lab condx-anb6 x6yxh8g o0o 2cgg+2houcting an experiment related to Newton's Second Law. The collected data were displayed on the graph at the right. Fro2 cxo hgg60xa+- nho28xygob6m this graph, what conclusions can the students make?

  99.03: If the net force on ankmfftc av::uw6oifb 4 o(*(r5 e9uxi- object were doubled while at the same time the mass of the object was halved,to fto5 *ui :(:i(e4xcu6k -mfw 9rbafvhen the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly from rest to a mu9)y n9o1 oolspeed of 20 m/s in 10s. The m9 yno 1o9ol)muagnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling d dfewo v5+kb w+w*s2i v5,d3cbown the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force t,5+iw w bdfbowes2v*ckvd 35+hat the trailer applies on the tractor is

  99.16: Which of the following principles best expld 0,t9sel d2pyains why large tractor-trailer trucks generally acsdyd92 p ,l0tecelerate much more slowly that automobiles?

  99.19: A 50 kilogram sdwynfa4.le4aha n)d9 p77;n 4:lup ci kater at rest on a frictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.e.yl7w p)faa: d p4ch4;undn 74nal9i 0 m/s. Which statement describes the subsequent motion?

  00.13: An object near fkyy-3vohd-ym. c ze:v* pl70the surface of the earth with a weight of 100 newtons is accelera:m 0vz -ehyv 37y*c-klodpfy.ted 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 rest 6pa: +-ol k y8fst+aj9x(ehhm0kl9nht(nw:t by a constant force of 240atxf+-nkpsmjh9l e8+ ha6t y(( 09 o:khlntw:0 N. What 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 acm8tla13r lw9eross a rough horizontal floor before coming teml893 lrwta1o 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 4u 9lmoil2an t:.jrl;*.0 m/s slides 8.0 m across a rough horizontal floor before coming to rest. The coefficient *ua jlo;.9t2:l imrlnof friction is:

  09.21: A 20.0 kg box remains at rest,70wx6s cdqau+q w 1ot on a horizontal surface while a person pushes directly to the right on the box with a force of 60N. The coefficient of kineticcuwt d7,w+1 x 60sqqoa 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 rest on a horil(szl5 ayo1:l/ ;c bsgzontal suz /(:y5as;sbg1lo cllrface. 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 between the surface and the block?

  00.21: A car of mass m slides across a patch of ice at a speed v 5fo3tkoo*,asg hqi* /with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic friction between the tires and t*a /5,s*oo itqo3k hfghe 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 wh28hv v n*5+pd2f-w4:we aa rvj fesf*ith its brakes 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 μ2*+af4h-waph 8*j eefw2 v 5vvf:snrd .

If the car had a speed of 2v, it would have skidded a distance of

  04.32: he driver of a car makes h;fr1mu7vu6k an emergency stop by slamming on the car's brakes and skidding to a stop. How far would the car have svr k 617fuhu;mkidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully control1 uvbu 8q0bd;cf7 +ijeb7cc /h each of the following devices. Which of these dev/; cf+v0qi7c uecb d7u1jh8bbices 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 jn44jq gqa6.h15000 newtons is 24000 newtons. About how much time is4q6nag4j hjq. 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 persmj i w*h)cv h, 4jmm.-a2s0ardon called Ted exerts a force T to the right on the box. A person mjid,jv c0*- w)mm2a4rsa h.hcalled 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 the box.

  02.27: The diagram below shows three roller coaster tracks of equal lengtht4gh,l2vp11/le jn l d. Assume that on all tracks the roller coaster carts start from rest at the same elevation and move41,en pljvd g12/ltl hs 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 tracp(v 4ja7 1dh6xtzmem0r(ju.3 r* bmbiks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevati0 zj3bmhp d6viur7t4e ( r.mxj (amb*1on 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 rollercoas ewu-zv)9grm1ter cartrolls frictionlessly along the curved track from point A to point C under the influence of gravity. What wou19mvu-wze g) rld 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 d8q-ccir4w p ikcd,eq,85qm 63 c0 upwa rope which makes an angle of 300 qm4qwi8u8p-c5i w36d0 r ckdcq ,, cep 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 wall by w6s nnic s0ukof94.a (a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coeffici.k4n(0fs cuwas o9 n6ient 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 acrossh-) jz9qh 9x tl6stub-. ;ueou a horizontal patch of grass with a constant speed by applying a force P. The arrows in the diagram correctly indicate the dt xu-q-u tlob)h.9;z9eu 6 sjhirections but not necessarily 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. Neitheo3oo-v k8rzw :f5 3qswr is moving. Which of the fo-fkz3:s row 8v5 qowo3llowing statements concerning this situation is CORRECT?

  06.15: A crate of toys re7b-+t wg pkco6mains 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. What force is responsible for the crate’s increase in speedup the hill?+obwp- k7c g6t