99.36: What happens to the inertia of an object when its /+m9alfy p ,pmvelocity is doubled?

  02.14: An intrinsic property of matter zcw+ t n5ffj+ )/9ti)rklrp cgv-v+*wis one that does not depend on the quantity of matter present. Which of the following properties is NOT an intrinsic pro*n/fv c tz+wvi59+ cp+) -w )fgtjklrrperty?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume the E afk5:0 ny7vitarth has mass fyat75:0 i kvn$5.98 \times 10^{24} \; kg$ 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 i.dku0fcvc, 2j 8 1 oc+dx-wrshqm7m k8s 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 Earth o.v udxw,m0ck-2 qjc8s7m khdrcf1+ 8 mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s v q8/sf-(va gegelocity to increase while its acceleration dqg-8a (vsg ef/ecreases?

  00.11: A certain particle undergoes erratic motio -twnd:seen vgoe:2/hywe2a+e,o2d : n. At every point in its motion, the direction of the particle’s momentum is Agd2ey ,+on: e-:t2av2s e/ed hwoe wn:LWAYS

  17.14: A block is suspended in the air at the end of a cul6b51whw z1s7v c8qstring held by a person. The person pulls on the string uniformly accelerating the block upwaq5wc 61h1zbu87scwlv rd 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 constan 0d x83uwsc8, jpbz9kwtly zero on c39wzb08dwus8,k xj pthe object?

  13.28: An object is in free fall close to the ground. A person intervenp gksmok (3-9res 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? The9gso3kprk( m- 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 vfm16l ( zg ;grpn9 jm60txg/vN, and F3 of 70 N, acting on m(lg tg0 rnvvj66/mzxpg19 ; fit. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can be xvkbk+0zn w11combine to form a resultant with a magnitude of which of the follozw1nk b+x 01kvwing

  10.06: Which of the following statements is most closely associated withw *qo;hs 9oz-x Newton’s Third Law of Motiwshoq * -xo;z9on?

  95.06: The reaction force does not cancel the action /mvoc1b5f qa:pr-:f4y cdgs 7force because:

  14.14: A box rests on the floor of dum3yhg;,lp/ cx 8h,can elevator. The elevator is accelerating upward. Which one of the following choices best repr hu dxh/,,gcc8l;py3mesents 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 speed. + e+rnjbqt:-r(5 q 5dni)5hnugivos- Which one n+:+j)r5 thgqvd q ioi-5benus(r5 n- of the following 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 of 35h h o- oh;c2f(gcr57wm k0lxp( m/s. The batterswings and hits the ball. The 75o(c(f;hlprh0x2mw k -gohc magnitude of the force that the ball exerts on the bat is always

  11.13: A physics book sits at rest onm0 ttfkv c2,cnrb7 g*: a table. On top of the book is a calculator, also at rest. Which one of the following choices is the Newton’s Third Law pair force to thek:f ncr*tt2 v70b,gcm force that the table exerts on the book?

  05.06: The students in a Physics I class were in lab conducting an expemlbb/k,v w) e4n06xs v9qb4xbriment related to Newton's Second Law. The collected data were displayed on the graph at the right. Fr0 wbx /vn4bxvemq ,b96s lkb)4om this graph, what conclusions can the students make?

  99.03: If the net force on rqnty a8-j.k(+v xuiy 4-eoyead vv3y-d s,-)an object were doubled while at the same time the mass o -iov q )rnd-8+yj3svaad uv4et,(yx.ey -y-kf the object was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated unifo:;et 6p uht x)0cia4pwrmly from rest to a speed of 20 m/s in 10s. Thea: tp)0;pwutx4e ich6 magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road.ui )n3i2+cdxvv)i0 ;if,gfjl The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the tra,n0 cugvffij;3d vxii)+)l2i iler applies on the tractor is

  99.16: Which of the following principles best explains w 6u6f6j pyqm*wnyq 3m/g/zf o)hy large tractor-trailer trucks generally accelerate much more slowly that automobileyoqpz3ffn6yw*j 6m/)6 g/ mqus?

  99.19: A 50 kilogram s*(uw/jdqf.hq-8zjq g0a zqd - kater at rest on a frictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement describwag.djqz 0uq-f h -*q d8(zq/jes the subsequent motion?

  00.13: An object near the surface of the earth with a weight of 100 newtotxtq1t n+-f(gw y-f6s21bib lns is accelerated-t f +t(l2y16nqgb f1sibtx -w at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass 1 d8jt(jzeyf:is 1200 kg is accelerated from rest by a constant force of 2400 N. What is the speed of t8z(j fj:e d1ythe car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s sliejwyr 0i ;hu)-des across a rough horizontal floor before coming to rest. The frictional force acting o; uijr w)-y0hen 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 slide2*5zctyoh/ kg s 8.0 m across a rough horizontal floor beforec2 5g*hoyzt /k coming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface whileqj5g-/l sbupy;1k+u k;u5 j(ycl w: uo a person pushes directly to the right on the box with a force of 60N. The coeffi lqpu/by u1l;kjs5k-ow5u (uy+cg; j:cient 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 rest on a ho8sh sp1jsm 0/brizontal surface. The block travels a distance of 12.0 m during the slide. Which one of the following choices best represent 1s08shsmb/ jps the coefficient of kinetic friction between the surface and the block?

  00.21: A car of mass m slides across a patch ofv)f ;d9b fja(n43ir ilkuy,-n 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 frictiy9(vflr3 iifdau- 4k;,)jbnnon 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 speed v c1p8+8y, *eevq7 0coldvahxz with its brakes lozdv0apx7 8 ,8*lhqcyv+e 1ecocked. 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 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 t(r8irjf(qhz(94kwn emergency stop by slamming on the car's brakes and skidding to a stop. How far would the car have skidded if it had beenr(j(9r4z(t i8 k qwnfh traveling twice as fast?

  99.39: The driver of an automobile muk j9j6.ru vd +3:tna*qew(0nfi3x qnsst carefully control each of the following devices. Which of these devi(ks nxvqu jj*a :+ifnder630.9twq 3nces 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 ww0t1 4v niy( 2xrpa/xgith 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 nev(/ygn2w1irp t0a4x x ar the surface of the Earth at takeoff?

  07.21: A box slides to the right across a horizontal floor. epltr9i w0 :wp3/l *phA person 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 as the force T. Given that there is friction f and the box accelerates to the right, rank the sizes of these three ip0 r9ppwl: lhtw*e3/ forces exerted on the box.

  02.27: The diagram below shows three roller9hbs69vq 7z ri coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessl 67zbr9h9isqvy 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 by6p ne/dy :h;.q 9-2cmlynzyjelow shows three roller coaster tracks of equal length. Assume that on all tracks the roller coas 6mq l-z9ynp y.h y/d;y:cnj2eter 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 cartrozgqfwn95-bfvm hpx6b- */q g( lls frictionlessly along the curved track from point A to point C under the influence of gravity. What would be the direction of the cart's acceb5n( qp6 w fq/zgg*m-bxh9-vfleration at point

  02.40: A box with a mass of 50 kg is dragged across the floor by a rope whicfjq w ar /57zo:sl4al9of(2 ybh 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 constant speed of 20 m/s as show5lobf9 2aw jf/4qys(zrl:7 oan in the diagram?

  04.40: A 6.0 kg block initially at rest is pushed agai8zgyk w6fb:,e31 g rflnst 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. What is true of the friction acting on the13:8fg f6wel kzbgy, r block after a time of 1 second?

  05.10: A homeowner pushes a lawn mower across a horibfkm( p)g ra 7*wh jh.fg5depyg-8 35xzontal patch of grass with a constant speed by applying a force P. The arrpm7 fr gfy3e8hpw*.gag bjhxd )(55-kows 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 force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crate on a tabx7 hj88nt/:i q03yteot sh:zule. Neither is moving. Which of the following statements con 3hz/it0qsu8:yjxh:tne78t o cerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleig*ee5o lcrr.*gr n2jq5eg .snlz s/q15h is pulled up a hill with an increasing speed. The crate is not fastened down to the sleigh..er2s5 e*z5j1o/ l*rg.seqlrn q n 5cg What force is responsible for the crate’s increase in speedup the hill?