99.36: What happens to the inertia of arc97uind. /(72mxtadyl kbqe f x5i9+n object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not depend nr)z2he).zb z on the quantity of matter preser ). zn)b2ehzznt. Which of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surf-qf p 45mwuc5 qo9n m*ob2d4zxace of the Earth. Assume the Earth has massx4o9bwpdm4co u5 2 zm-q*nfq5 $5.98 \times 10^{24} \; kg$ 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 q+ i:vgmpwn9/is the magnitude of the gravitational fopvmg wn/+i:9 qrce 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 v)2swes uwr1sa fmx-f/i. q-/e elocity to increase while its acceleration decreasess-am/wi2-/xes1 ewus. q rff)?

  00.11: A certain particle undergoes erratiz0c-ojp1gso 8na0 1 dic motion. At every point in its motion-aj 0181cso g0onpidz, the direction of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string xmqt 66 mt 46*pogt;veheld by a person. The pe6mq p oe;t6v4 ttgx*6mrson 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 constantlyzq m.ueq/(/p(y ( vjpw zero on the oqz(jv .p (wemyqu//p(bject?

  13.28: An object is in free fall close to the ground. A person g 1,e0xebmqz jk4(xii)c1 , yeintervenes 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 acceleration is a and the magnitude of the (g1,mj,ze0ek4xe y bci 1)xiqacceleration from gravity is g.

  98.03: An object in equilibr2.:tk gl5b ccnium has three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting5nb g:tcck2 l. on it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 /unj88tj9 05xb l5ydlus,q s snewtons can be combine to form a resultant with a magnitude ofu , ny b9dsq/ lss8l5xj08u5jt which of the following

  10.06: Which of the following st0d-*9c ro7u j)7rjpo rhswr j3atements is most closely associated with Newton’s Third La377*o p c owd0j )sjh9j-rrrurw of Motion?

  95.06: The reaction force does not cancel the action fohrh**-bc 6wfs bg : b1anw6n(frce because:

  14.14: A box rests on the floor of an elevator. The elevagp( tqiy3 i8fo*5/uowps8lt7 tor is accelerating upward. Which *8/it3( 7p qpswlyt5uogif8oone 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 wim q0wo-zw 6ut.th constant speed. Which one of the following choices correctly describes-zwot 06.qwmu 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 s:q urjx h yh+2h:h qd1--/cfpwpeed of 35 m/s. The batterswings and hits the ball. The:hfw-q-x2hduy:q ch +/ r p1jh magnitude of the force that the ball exerts on the bat is always

  11.13: A physics book sits at rest on a table. On top of the book is a calculal20a/p8 iyspc9pf h.1 nrh.hotor, also at rest. Which one of the following choices is the Newton’s Third Law pair force to the force that t12h oy/h8h90 .pcipans .rpfl he table exerts on the book?

  05.06: The students in a Physics I class were 0+j rts8tzw3 f8wgoa4in lab conducting an experiment related to Newton's Second Law. The collected data were displayed on the graph at the right. From this graph, what conclusions can the stuj twzr0twa8os8+4 fg 3dents make?

  99.03: If the net forpig:fg);(0uh8ya o ucfe)7c c ce on an object were doubled while at the same time the mass of the object was halved,then the y0pu 8h(cc)i7 goafe;c):g f uacceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly fr bp1kq;30lb0amw pcs 8om rest to a speed of 20 m/s in 10s. The magnitude of the net forccap l;8 pm1qs3wk 0b0be accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mac2m4z06ifsh ya0mpwzi.;od ,ss of the trailer is 4 times the mass of the tractor. If the tractor accelerates forwwfdm z0m6s ;2ich4ziapy.,0 oard, the force that the trailer applies on the tractor is

  99.16: Which of the following principles betsc3vyoyw /x0/jc 2-dst explains why large tractor-trailer trucks generally accelerate much more slowly that a/ v/d-wt2j0xs3yoyc c utomobiles?

  99.19: A 50 kilogram skater at rest on a fric kt7bkkosvo ,gs-bn8.1a+we; tionless rink throws a 2 kilogram ball, giving the ball a velocity of 1vbk 87-s ob ,woktng+e ka.1;s0.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface of the earth with a weil7pa5 b o(wi+wd+p;gaght of 100 newtons is accelerate;+pbpwa57o+ la iwd(gd at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is ac lg,:o,(7r cjb 8d1cdt4trj qvcelerated from rest by a constant force of 2400 N. What is the speed of the car:cb4jtdj7l qtvc(, r8, 1d ogr 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a6r-a v u2ma1mk0kfox; rough horizontal floor before coming to rest. The fmfako rva 61;um 0x2-krictional 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 velocityqk-n(kv+ s.yz 4.0 m/s slides 8.0 m across a rough horizontal floor bn.kqyk- sz(+ vefore coming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a person pusjam6 r:roj*94 *xhupnhes directly to the right on the box with a force of 60N. The coefficient of kinetic friction between the box and thr mjpjau9:nhro* 4 *6xe 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 h1;zr;cj q ev mv/4 ccs6u/g5jffe:h;to rest on a horizontal surface. Tv4;jgef/ q6s/cc ce;h1r mv 5j:zfu;hhe 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 sc 3hdy on(/q1c7ks pzk4 :ps:patch of ice at a speed v with its brakes s/3 : (ns1khqzd4 ypcs:ckpo7locked. 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 mass of 2m, it would have skidded a distance of

  00.22: A car of mass m slides across a patch omhr ozhu0 j /43ucgdid7q sim.1r47 z-f 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 between the tires and the dry r 7140c mzdu-r7mgj o z4rus3.hh iq/dioad 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 stop w;c1uowlbq4f(a -q fdx.+ppb mp(;i-by slamming on the car's brakes and skiddinqu( -o1.bwi4l pmfpqcd(+;f-b p xw; ag to 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 oz+jsjg m ik 2bzj1o:up5(0irlx :y0c 7f the following devices. Which of these devices can cause an acceleration in a movzclsi:mj51k 0p20b j+ru zyj(io:7xging car?
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net force on a rocket with aw(r-, ; *rddp (w.rk xr)oochds-ij2 t weight of 15000 newtons is 24000 newtons. About how much time is needed to increase the rocket x- ddcdhp2. rj-ro(wikr*,)ro ;st (w’ 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 horizontalasf1kt0 ;aomy 2w ba x+zp-c; q/g+2bu 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. Given that there is friction f and the box accelerates to the right, rank the sizes of these three forces exerted on+k;fsab+/ t ug-p2zoabaqmw;10y xc2 the box.

  02.27: The diagram bel3(ydzpr )7ss-t k2nr3zwt/vwow shows 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 frictionlessly over thew / (s-tr k 3dzwp)rznsv3ty72 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 tracks of equal lengjy*z hef ;aqtl (/l-pz ,0+ppoth. Assume that on all tracks the roller coaster carts start from rest at the same elevation and movesyept 0pz j* f qllh;(+oz,ap-/ 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 roller(a8k-rb hw4b3y6h cftcoaster cartrolls frictionlessly along the curved track from point A to point C under the influence of gravitybab8 k(36ywr4tf c hh-. What would 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 a rope whicut6 l 1rd 27 wui(o5rcwxo,4vch makes a(c uvrut7 d52co r1wi4wx,l6on 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 shown in the diagram?

  04.40: A 6.0 kg block initially at rest is pushed against a wall by a 100.tsfzl0)sv uvia0 v.7 N force as shown. Thecoe)stv0zi v.0sl. fuva 7fficient of kinetic 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 *18f:arlku ws.pwx)p 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 ma w* . a8pp)xkwsfu:l1rgnitudes 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 f 0f(uwzo)kw bzj*.8lof the following statements concerning th8wo z. fflw z)0kb(*juis situation is CORRECT?

  06.15: A crate of toys remains at r- ei1 cwk io,vzyj80r9est 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 force8wv yze1kc,i9irj- 0o is responsible for the crate’s increase in speedup the hill?