99.36: What happens to the inertia of an object when its velocitynm;oc h) xxbq;j -e,qf,s)t. e is doubled?

  02.14: An intrinsic pry(/ x hyo6nlj;+xbh b 9/b2e yexbio .le+:e4zoperty of matter is one that does not depend on the quantity of matter present. Which of the following properties is NOT an intrinsic property?2h;ylh+zybo:jei(o /bn +.lb/ey6 9b x4ee xx

  04.16: A 20 kg boulder rgtc.29 9enle rests on the surface of the Earth. Assume the Earth has m9gtl2c9e ern.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 surfavuds*p(z3t(m 5ex()k1jaoyz ce of the Earth. What is the magnitude of the gravitatk som)vj(y zd(*p(ut3xze51 a ional 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’s velocity to increase while its avi + eh+ rv()8hulns3dcceleration hh+8 v+ne isd(r l)v3udecreases?

  00.11: A certain particle undergoes erratic motion. At every poidv x/(y rva7b3nt in its motion, the directionvdbv7(y3a /x r of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string held by a persobh sdv8*x no9/n. The person pulls on the string uniformly accelerating the bl vos9hd*8b/n xock 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 5-r :wk iw6boh: guw6mforce constantly zero on twou 6rib :m-ww5:hk g6he object?

  13.28: An object is in free fs rc**wv gi:m l.j9d3aall 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 object’s acceleration is a and the magnitude of the acceleration from*vri3 jld:9 *.wmcgsa gravity is g.

  98.03: An object in equilibrium has three forces, F1 of 30 N, F2 of 50 N, and F3ye/47ey6 , a wk2su)mxj*aiaa of 70 N, acting on it. The magna a6ji7yya*xkse u)mwe/a,4 2itude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force(lgvf3es /f+6rm tnn3 of 10 newtons can be combine to form a resultant with a magnitude of which of the fosgve nlf/(33mt r +n6fllowing

  10.06: Which of the following state7ldy vlg;c /nr+ju77 iments is most closely associated with Newton’s Third Law of Motiong/j 7;ny7u7l rc+divl?

  95.06: The reaction force does not cancel tll:xcpyr(i1sq) 1 y h;he action force because:

  14.14: A box rests on the floor of an elevator. The elevator is acceleratij yg*t8 0xtr5//ho heong upward. Which one of the following *8hh/ 0oetjot g/5yrxchoices 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 constant speed. Which 8r o7 byz5a(ddz:5 xcefl8 ubu7)5lodone of the following choices correctly describes the Newton’s Third Law5 dxlbf5:7r8duub7dco) az lze5y(8o pair force to the air resistance acting on the skydiver during the fall?

  06.08: A baseball is throu.lilo 4 d;w;nwn by a pitcher with a speed of 35 m/s. The batterswi;.oln4d l; wuings 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 table. On top of the book i:2 tngy -ymn x;02qppis 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 exerts 0:yq t2p g-mn ;yxnip2on the book?

  05.06: The students in a Physics I class were i/o:m)d:(bt qqq uxv2m n lab conducting an experiment related to Newton's Second Law.m :xoubd)vqq t(2q:m/ The collected data were displayed on the graph at the right. From this graph, what conclusions can the students make?

  99.03: If the net force on an object were doubq8a/ t:wv+xff led while at the same time the mass of the object wxv+: tqfwf8a /as halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg isk jj9nf6v1lz(96)djw8apjv wg 95n ys:x2xxh accelerated uniformly from rest to a speed of 20 m/s in 10s. The magnitude of the net f x(vpjg9xhkwlj:s6196xjvnw8n jf a9 5d2zy) orce accelerating the car is:

  99.05: A tractor-trailer truck is travbvul+8uk p5ta4yr5cob;b +; leling down the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates for4+bul 55b+ocatu; b rl k8v;pyward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explains why largeutzp5w r*4;c/f cjv/y tractor-trailer trucks generally accelerate much more slow/v/ t fyjzrw*;5pucc4ly that automobiles?

  99.19: A 50 kilogram s fo qyf66)ziv+4 i1enukater at rest on a frictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10ofiey4i6)6z v 1u nfq+.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface of the earth witfz* 4 c j8cxy82 rekf/rcz3 (rpvv5;srh a weight of 100 newtons is acccx/r;p5 (rzz c8f38 4j srerv*kv2cfyelerated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated a 7ld 0mehqdh()px; e;from rest by a constant force of 2400 N. What is t e;l(h07e)phaqx; ddm he speed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across ao 55he( iaij6b 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 reei a(i 5hbo5j6st?

  95.38: A block with initial vex7ci +xk;u6ek e+- n dtzn)+*ot;kgdplocity 4.0 m/s slides 8.0 m across a rough horizontal floor before coming to rest. The coefficient of ke7+;kxx - epgzd+o6i k*)u;ctn+d tnfriction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface whi r7hr7eaud -:dle a person pushes directly to the right on the box with a force of 60N. The coefficient of kinetic friction between the box and the surfah:ra d 7r-ude7ce 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 +mq eyqz- 33lhrest 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 kinetic fric e3ql +3hz-ymqtion between the surface and the block?

  00.21: A car of mass m slides acr25i/4lcpl.)d b i uibtoss a patch of ice at a speed v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coe /.bi )lip5b4ctliu 2dfficient 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 at a a . zkboh2 ;3p rlp32fxzn0m4yspeed v with its brakes locked. It then hits dry pavement and skid.n4po h2akb03 r yfzzm ;x3lp2s 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 emergency s n4e*)qnk6+.xm z j5dlourr6etop by slamming on the car's brakes and skidding to a stop. How far would the car h mjn)keuo4nd 5 66zrxle.+*qrave skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully control each of the foll a vj.irs+bd6muz7-o yte 421/xcu e.cowing devices. Which of these device j4r2zde-usm6 oei b1.u/7c+va. cxy ts 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 15000 newtons ;fiy fcgt(a 3 ii,2d //uy6lesis 24000 newtons. About how much time is needed to increase the roiis,;fc y/f ey di2 l(au36/tgcket ’ 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 0f yf1pa.v en1across a horizontal floor. A person called Ted exerts a force T to the right on the box.na . 0pffe1y1v 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 rol .v 6 )l.wsn*vg.ldi sxc939pkcahti *ler coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and movxcvwsvk6*.9 3 cisali)n9 d* lh.gpt. es 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 tracstrs t,ip95z,ks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictptr i,9ssz,t5ionlessly 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 t pcoi* m-gt./zf-q+e-oc8 mm vhe curved track from point A to point C under the influence of gravity. Wha-oo*c mv8c-t+ iq.-mz/ep gfmt 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,on*e o mnc -k/j589voyg-vvc which makes an angle of 300 with the horizontal. Which of the following would be closesko * yo5ecvc-gj9nm8ov-v/n, t 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 N fr bu -i+mb02. h3 hh / a;oookrep:(c)/xkbtrporce 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 the block after a time of 1 second? ma/+x : o(thob )rkh-o3i/pbh2cu;e. rk rb0p

  05.10: A homeowner pushes a lawn mower across a hor.t , )xs;b5vf wgcnd4qcd)0haizontal patch of grass with a constant speed by applying a force P. The arrows in the diagram correctly indicate the directions but not necessafx hdw ,q 5.dvbc0n;)4tg )csarily 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. Neither is moving. Which ofpt5+:wznz2 fz the following statements concerning this situation is COt+zpz:fn52 zw RRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is pull41i)7 /2ercgh kmrqn yed up a hill with an increasing speed. The crate is not fastened down to the sleigh. What force is respon crm 2re/y) h7nigk1q4sible for the crate’s increase in speedup the hill?