99.36: What happens to the i*b5jhu:.xw ycnertia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not depec2 j4vg -6ghjjnd on the quantity of matter present. Which of the following properties i2g-4hj j6 vcjgs NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the sgra z)gwi-(-iurface of the Earth. Assume the Earth has miaw-zg-rig ) (ass $5.98 \times 10^{24} \; kg$ 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 the66w ya6xrb7.fin;tc)kw r3 vq Earth. What is the magnitude of the gravitational force acting on the earth by the sphere? The Ear6cf;a w67q tyrrk 6v x).bn3iwth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for o1f1ustaxi0o-mn+,an l. h(p an object’s velocity to increase while its acceleratiota 0+n-h(uxlnoip ,11 sam of.n decreases?

  00.11: A certain particle undkb7x)0+7 4vxebh fdrgergoes erratic motion. At every point in its motion, the direction of the particl +gevbkd 7xfx)70hr4b e’s momentum is ALWAYS

  17.14: A block is susp;3 pa,+v/v)tx uv76rvxzlt txended in the air at the end 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 pair force to)3/avvtzxx rv,6lxt upt +;7v the force of the string on the block?

  07.18: In which one of the following situations i-4d+wyi0f4 ey zvr/fjm l*i3d zo6s(ys the net force constantly zero on the objw/d4mzefv6 i-4ry sf +id l(3y0* ojyzect?

  13.28: An object is in free f wfe5)ces3-2gpkbm lh0w 6nm4 all close to 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 obj6hskw-c 2 mne0 5lwfg4m3)e bpect’s acceleration is a and the magnitude of the acceleration from gravity is g.

  98.03: An object in equilibrium has throa(xxa4 qii ,ya). .fuee forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitu 4uxfoqa).a,xiy i. a(de of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons bour y:4oula25pf13lcan be combine to form a resultant with a magnitude of which of the folloou4lrp 2 3o15la yu:bfwing

  10.06: Which of the following statements yq1mp+/q5 go ze8c +eais most closely associated with Newton’s e p yaq/1ome5+cgqz8+ Third Law of Motion?

  95.06: The reaction force does not cancel the action force because:8ytr)b66ra xw

  14.14: A box rests on the floor of an elevator. The elevator is acce gz2ez s ntn94 :kzg;gnu-:/cblerating upward. Which one of the following choices best repres :zkcg 4ns2;/eu -gnzg zn:9tbents 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 constandqp5ev18pn64/w ga-bd9 l. nqhysb-oqp8 p v)t speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to tb1q.b/a 8 p 9se)4 -pqny qv-lpodh8pdn 65gvwhe air resistance acting on the skydiver during the fall?

  06.08: A baseball is thrown b0 (,lshirsii/o (8h mmy a pitcher with a speed of 35 m/s. The batterswings and hits the ball. The magnitude of the force that the ball/l(irsih8( ,s0moi hm exerts on the bat is always

  11.13: A physics book sits at rest on a table. On top of the b*q/lhi s ts-aa-(h7dj 2fy ;weook 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 table exh ed sh*ata/ j(-y iw-f2s;l7qerts on the book?

  05.06: The students in ahla8caa11+ 7n hw7tf c Physics I class were in lab conducting an experiment related to Newton's Second Law. The collected data were displayed on the graph at the riac hn77f18c1al + tawhght. From this graph, what conclusions can the students make?

  99.03: If the net forcenp+j6l vd jjhqvw+2tx6 r52(j+jcg +r- uepf 8 on an object were doubled while at the same time the mass of the object was halvr+pt 8-g+vw56dhj2 +n+2pxvjrlfucqj( ej j6ed,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated :(reolutq - ;idr,3l uuniformly from rest to a speed of 20 m/s in 10s. The magnitude of the net force acceleraioq r u:e,lltd3-ru( ;ting the car is:

  99.05: A tractor-trailer truck is traveling down0s7tvk 6yiu n5 0,(imey-q flw the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force that m056w,n7(-k tfyu i vqel0i ysthe trailer applies on the tractor is

  99.16: Which of the following principle ;; b1s 7z5xhxw(nixfis best explains why large tractor-trailer trucks generally accelerate5x;wn; xs(bxfii z7h1 much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a 2 ki mo2p n-aqur (hf78ct;logram ball, giving the ball a velocity of 10.0 m/s. Whi ;h- uq7(no2 a8mtprcfch statement describes the subsequent motion?

  00.13: An object near the surface of tjvi-9 ew.,v hkvug a(h(;b c/ehe earth with a weight of 100 newtons is accelerated evh-chw ;bve/ v9j,i(g (u k.aat $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated from rest by ajbc p+*nvc fh 3;d/mymkpu -:: constant force of 2400 N. What is the speed of thep fuk*:-/+ hndjm3bmycp:;cv car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a rough hoz4 uka3u(l a5cg)2avbrizontal floor before coming to rest. The frictional force acting on the block is 3.0 N. How far does the block slklv3g5uzuba 4 c2) (aaide before coming to rest?

  95.38: A block with initial velocity 4.0 m/s slidlag : 5l151rcdu8sy q46p uzqwes 8.0 m across a rough horizontal floor before coming 1zrdgs1y u8alcw55uq 4pq 6l:to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest tv)b4h8d; ,kozoidd9 on a horizontal surface while a person pushes directly to the right on the box with, ) i dhktbo489zd;dvo a force of 60N. The coefficient 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 m/ rscd*8jyh:c, (qkc 1wulkr3oving at 8 m/s accelerates uniformly to rest on a horizontal surface. The block travels a distance of 12.0 m during the slide. Which one of the following choices best represents the coefficient of kineticck 3rycdhq k/jrs(*l:8 u,w1c friction between the surface and the block?

  00.21: A car of mass m slides across a patch of ice at a speed vv+x 7tfrea(ev32p milc6 j4r; with its brakes locked. It then hits dry pavement and skids jev(6c4 t3 ;a epilvrr +7mx2fto 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 of ice at5 ps42x(;up was6w dzr 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 road6rsw wp(5z2uap ;x 4ds 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 by slamming on tnu(5*5g ozjckhe car's brakes and skidding to a stop. How far would the car have skidded if it had been z5 5cj gunok*(traveling twice as fast?

  99.39: The driver of an-t)anq ud 6z,r automobile must carefully control each of the following devices. Which of these devices can cause an acceleration in tzrnu6 -)aq d,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 15000 newtons is 24000 m(x u gz2iaf(5newtons. About how muxu(52mi faz (gch time is 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(+1.uhi - xsfhdkc xey:oj y.qi d7zw*)am0*y right across a horizontal floor. A person called Ted exert.ho)q(hkumdf:.xde 1cyj x 7i -s*zy* wa+yi0s 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 the box.

  02.27: The diagram below shows three roller coaster tracks of equaljrjxt)3ir +b3 avt2 ,fq1ka4 q length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly over the tracks to thr+bxj 3ak4t 1f)rq 2j 3q,itave 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 behii qz7 k)xdicy6hx *a/z1e),low shows three roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elqc,hiadi /k )zx)e*i1 yhz76xevation 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 frictiog/ fznzzo 0n/0nlessly along the curved track from point A to point C under the influence of gravity. What would be the direction of the cart'zzg o/n00n/zf s acceleration at point

  02.40: A box with a mass y / k19 r-aew;mfxpzq)7fse)9r ziof6of 50 kg is dragged across the floor by a rope which makes an angle of 300 wi9eyk 9-fz/ i6 xwf)r q pmro)7ezsf1a;th 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 initiald cx j0zw*qw gd;26b,qly at rest is pushed against a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of swdz 0,cqbj*xw qg6; 2dtatic 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 a (n+tv pm6jxte 6;t 5lhslq+j9cross 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 matln; s6 jm(+vxl 9qe+t6tjhp5gnitudes 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; b .d2qi4i7tu5zldwu a table. Neither is moving. Which of the following statements concerningdbw7du ;ui .l5qit2 z4 this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as theg. 1mqmlmm47gko2 bm-/ ,frih sleigh is pulled up a hill with an increasing speed. The crate is not fastened down to -b.qrglg,1 f2h o4m7mmkm/ im the sleigh. What force is responsible for the crate’s increase in speedup the hill?