99.36: What happens to the inm (zbccptff+ i 4v13n2ertia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter idf z(3r m4.nkis one that does not depend on the quantity of matter present. Which of the following properties k d4f .mzi(rn3is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of t)ill,vc.e( fe71nmsbbg/ ie3 a:pnex2s k 1b 8he Earth. Assume the Earth has ma3bifl /mv(i g.e nac7pb e)s1:1 eblnxs 28,kess $5.98 \times 10^{24} \; kg$ 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 surf)i0r amu0 95)-0dyjbqwlrb yd ace of the Earth. What is the magnitude of i 00b9lmrd0 )qw j-a)dyybu5rthe gravitational 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’r4ggy a; qq.u30mju ,as velocity to increase while its acceleratioaqg,qay 30; .4urjmgu n decreases?

  00.11: A certain particle undergoes err.nq;(vkbb mp-uuh 78z atic motion. At every point in its motion, the direction of the partkpbn; ( h78uqzb-vm.uicle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the e0el dy7xxm5 )xg cx::rnd of a string 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 px leyc0xr) 7gd: x:x5mair force to the force of the string on the block?

  07.18: In which one of the following sitfi 32o8imsm :lphgjoh jk(f2h4382t juations is the net force constantly zero on the object?m: khgp3 2 ifo24h8jt 2oj38lmfs(hij

  13.28: An object is inmc3a( q wr0*mo free fall close to the ground. A person intervenes and slowmw(q0a*3co m rs 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 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, F2i;ow:8st6zrw uy -2hs of 50 N, and F3 of 70 N, acting on it. The magnitude of the resultaz: 8suyr hwtis6; 2-ownt ofF1 and F2 is

  01.07: A force of 6 Newt:q b9fg6b6 *j ifnllrx:b3u 1mons and a force of 10 newtons can be combine to form a resultant with a magnitude of which offb:fl:jb l*inbug616rx m3q9 the following

  10.06: Which of the following statements is most cyiq4nt r,2.*e fo ofu7losely associated with Newton’s Third Law o. etq*2nf74 iu ,foryof Motion?

  95.06: The reaction force does not cancel the action force becausepcw6fz lh+ (lgg 9m.smsp. :q0:

  14.14: A box rests on the floor of an elevatp am,)pek3sj )ny;8sror. The elevator 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 boxpsej;8,)3m)pasy k r n by the Earth?

  15.15: A skydiver falls downward through the air witht9zjkb07 py+.it zi.s)qcm 7u constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance acting on the skydiver during the kq. i)+ 9bis7ttzy70j.zpu mcfall?

  06.08: A baseball is thrown by a pitcher with a speed of 35 m/s. The qr3dh8cvq9s(qs9 5 (gn /etaabatterswings and hits the ball. The magnitude of the force that the ball exerts qnsvg9a (r83q(d5c aqts/9 ehon the bat is always

  11.13: A physics book srm3aut;qoh+30w guuu 7m* t8mits at rest on 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 the force that the*03uum mah ;3gtw om+tru 7u8q table exerts on the book?

  05.06: The students in a Physics I class were in lab conducting an experiment re8c-55xtsch u z9-d,z jrp;a tqlated to Newton's Second Law. The collected data were displayed on the graph at the right. From this graph, what c,-t 8sq-9r upz5dthac5zx ;jconclusions can the students make?

  99.03: If the net force on an object were doubled while at the same time thes(q przpsm g k/3ut;32 mass of the object was halved,then tsr3zg/k s;pq (u32m pthe acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly from rest to a sp ;b2bgkgy 9un)h cw,5nxvl 1)ff2yb*geed of 20 m/s in 10s. The magnituwy 5fhn1bug)k b)vggx9 y,* l2fc;n2b de of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass of the t.ens)qn edg z 17j1ut6:lo+sk 7w. dslrailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the trailer al+d)end.k.oug sz1t7:sl6s7j e1nwq pplies on the tractor is

  99.16: Which of the following prinvdgc.q njgq:l -z16m u zxl7*./mo3ug kfl1+yciples best explains why large tractor-trailer trucks dm- 6.okl gf*zv +711/ljgul:cq.3gnumzyq xgenerally accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater atr; .(g.jv p y:yy8tvfo rest on a frictionless rink throws a 2 kilogram ball, giving the ball a velocity of(r. y8ygp.j;ovy : tvf 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface a:yf pli79qekf-5uu (of the earth with a weight of 100 newtons is accelerated atu y9 lk-fqp:i5f(a eu7 $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelera.r:xx 5 tr9cpvted from rest by a constant force of 2400 N. What is the speed of the car 8.0 s after beginning? cv:x.xtr59 pr

  98.32: A 3.0-kg block with initial spep.+o l f)iu-zped 4.0 m/s slides across a rough horizontal floor before coming to rest. The frictional force acting on the block is 3.0 N. How far does the block slide before coming to res up)f.li -zo+pt?

  95.38: A block with initial velocity 4.0 m/s slideslybrm gz4:n g(n b .-t0hn,zb1 8.0 m across a rough horizontal floor before coming to rest. The coefficient of fric 4gr,tgln-bbh.1ny0(b m:z zntion is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a perso8qi6obkjv2bw 1fa2e5 n pushes directly to the right on the box with a force of 60N. The coefficient of kinetic friction8i2b5wvo 62a bkfe1qj 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 acceleratx/v(f)9wpf biaz: cs;es uniformly to rest on a horizontal surface. The block travels a distance of 12.0 m during the slidf:zw(xc fv9 p/b;)s iae. 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 with its brakd19h)01lu m uv 6bqu0q:;wl 7sgfun ikes locked. It then hits dry pavement and skids to a stop in a distanced. The coeffilfw9:i6u 0 ugmh dqq0sl7uu1 v1k;)bncient 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 ic4w lcxv- dr (n. cez3,leff9h*e at a speed v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The cc rv dxzf9ll3(nwe, e.h 4*f-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 ste/b.dt 9p sgg+z4 q:9 w:ixbjgop by slamming on the car's brakes and skidding to a stop. How far would thdbg+g b. sgt9eqij94w:z x:p/e car have skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully ykdzlg8cu) 8v8m: vzv (ufg1) 4zuu 3kcontrol each of the following devices. Which of these devices can cause an accelerat)f4zlmuvu3u8(y 8 k :u81gdvz kvgz)c ion in a moving car?
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net force on)1zlgs v- zf9j a rocket 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 Earth at-zvls f9) jg1z takeoff?

  07.21: A box slides to doe j-*cgmz8ju) e 1ew9.d8 fqthe 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 left, which is half as large as the force T. Give.* dg)ujj-de o8 eeqcwf98m1z n 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 efq : y2ra0x5hgqual length. Assume that on all t:f5 0ry 2gqaxhracks 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 be traveling the fastest at the finish?

  02.28: The diagram below shows three roller coast: rsxx/p83b lt,-rsiger tracks of equal length. Assume that on all tracks the roller coaster carts start f: g/stx ,8r- 3brplsxirom 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 frictionlessly along the1w; 4zr 6jlnny curved track from po164zyn ;lrjw nint A to point C under 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 aw damyx(j 0hs;9o3 l)dcross 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 o; a()x 3s dyjlwd09mhfriction 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 agains;:.n8qt*vqwltp8z-h ck-h p pt a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of static frictiz p c.ptqhvq-*pn:w ;t-8kl h8on 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 across a hor gg.gs81mcq9+wtfv0c 5ylh2jr - t:abizontal patch of grass with a constant speed by applying a for9rygsagw5cqm 0.1:tg2v- lf +hc j8 tbce 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 force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans againm+,c 5df1csfb fcbb 2wr.u2 k7st a crate on a table. Neither is moving. Which of the following statements concerning this situation is CORRECT?2wmb 5+1 .kdcb, cfrbcffs7 2u

  06.15: A crate of toys remains at rest on a sleigh as t(gv*hg8- ke+sbx0j w,cu w3wbhe sleigh is pulled up a hill b0*ce(ukg w +xh,ws j -bv3w8gwith 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?