99.36: What happens to the inertia of an object when its veloci ex21o m/6kuetty is doubled?

  02.14: An intrinsic property of matter is one tha4 x2wsuw n1,ipt does not depend on the quantity of matter present. Which of the following properties is NOT an intrinsic p4 wux in,w1sp2roperty?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume th/tb1rpa9h /jce Earth has mass t/ca r /19jhbp $5.98 \times 10^{24} \; kg$ 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 il,.unj:a gj 4ls in free fall near the surface of the Earth. What is the magnitude of the gravitational force acting on the earth by,.l ngau:lj j4 the sphere? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible9 pg 1jql7onsy +j:1ns for an object’s velocity to increase while its acceleration dec9gj7l q ny1oj1ps+: snreases?

  00.11: A certain particle undergoes erratic motion. At every point in its moti9kjg. h ht)3qo1t6:gqt6 g2 u xs-rigron, the direction of tx.tq r2rgqh96g) hi1j:g6t3t ou- gkshe particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string held txoue/ ki828qby a person. The person pulls on the stuox/k28 t8qei ring 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 nanv nri,j vx6g8ymy( :sm,83oet force constantly zero on the objecn smm( 6yoj,8:3,n 8i gavvxryt?

  13.28: An object is in frj4up ;w,yzv 0dee fall close to the ground. A person intervenes and slows the object uniformly to rest. Which one of the following statem04; , uwvyzdjpents 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 ; x/ /doo(myla30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitude of /a(ymdxl o /;othe resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can be com4n5i ajl3faf0 0kqt3mbine to form a result3ilt5fka3m0 qn a 04jfant with a magnitude of which of the following

  10.06: Which of the following statemeq x5(z0h,t3bujuvrd/e* j ,a knts is most closely associated with Newton’s Third Law of Moea 5 j *tx(u/zbhu,0drqjk3v, tion?

  95.06: The reaction force does not cancel the action f;/xap vru +4fworce because:

  14.14: A box rests on the floor of an elevator. The elevator is accelu- 3rt hlfdcjly*pj1g *b /5f4r3oee+ erating upward. Which one of the following choices besjpc4e- retg*lr* fbjhu51fy+/o3dl3t represents the Newton’s Third Law pair force to the gravitational force acting on the box by the Earth?

  15.15: A skydiver faqde;c2 li)ai7 lls downward through the air with constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resi q aci7l);die2stance acting on the skydiver during the fall?

  06.08: A baseball is thrown by a pitcher w88 q7 s74ujlfga3yk pcq)vq+qith a speed of 35 m/s. The batterswings and hits the ball. The magnitude of the force that the b)4 qclgq7q8 3yua kj8vsq7+pfall exerts on the bat is always

  11.13: A physics book sits at rest on a table. On topk0w;h juy q y 80o7 44,mzrlmqvz21ykw of the book is a calculator, also at rest.1,mzmy qk; 4ko w2wy0ylzqvu48jr h70 Which one of the following choices is the Newton’s Third Law pair force to the force that the table exerts on the book?

  05.06: The students in a Physics I class we8) omdq-9iwikoba hzx di8 9f0 gld405re in lab conducting an experiment related to Newton's Second Law. The collecl9 5dhid0 ax 8igfo0m8k9o wbd)4iz-qted 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 doubled while at the same time the m;u dy:wvvo j 978gfqc q2,2qsuass of the objectw2; uu,sdy7vq 28qjoc9: gvfq was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg icv e (rfudb4;imj5g ,0s accelerated uniformly from rest to a speed of 20 m/s in 10s. The magnitude of the net force accelerating te; vbjg4 f5,rdu(c0imhe car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass of the bv a)hm ( gosenbh:*fzv h5h4gji2*/4trailer is 4 times the mass of the trachv v zm f/e(g*)5j2bna*bhiso :hgh4 4tor. If the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles hbt9i)ltwa2c3 +0rojbest explains why large tractor-trailer trucks generally ach+br o39)cwti aj20tlcelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a 2 kilogram dk8vzx*lij7 6ball, giving the ball a velocity of 10.0 m/s. Which statement describes the ji*lzkd76x8v subsequent motion?

  00.13: An object near the surface of the earth with a weight of 100 newtons is b;w:kc6d,sy irq5p0d acceleratedw:dqbc50 y sdrki;, p6 at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is acceleb8cz4 ry.xxmp5sfg*- rated from rest by a constant force of 2400 N. What is t54f8m- *xcz ybs gx.rphe speed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4 /k4qbk3 ij6ij.0 m/s slides across a rough horizontal floor before coming to rest. The frictional force acting on qjjb 4 k/ki36ithe block is 3.0 N. How far does the block slide before coming to rest?

  95.38: A block with initial h/r:/l klwhder7 (va 9velocity 4.0 m/s slides 8.0 m across a rough horizontal floor before coming to rest. The coeff9 hr:/ l(/wlrke adv7hicient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a person axt;: qk7 5diqpushes directly to the right on the box with a force of 60N. The coefficient of kinetic fric;ai75xdqt kq:tion 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/2ryw bfuykeb: 52c8q*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 kinetic friction between the suue2 2fy wb5bcy*:8krq rface and the block?

  00.21: A car of mass m slides across a patch of x*2vspf xwz i vi/2.6gice at a speed v with its brakes lock.v2s*vxzpi/f wigx62 ed. 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 of zj5o6tqdpuz5dg, apt4qy g9:8)nf- a ice at a speed v with its brakes locked. It then hits dryzz:dut,d 45ao 8q-qf6jy5ta g gpp)n9 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 emergency stop by sl8 6 ahz/a06f wn ef3/cq o6 ug:pv/auj/qkn(mnamming on the car's brakes and skidding to a stop. How far would the c 6quf/ovqf/ag0an:/p6n(ku 63jw ch/en8 zam ar have skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully control each of the follom(chmdvk9w 55 wing devices. Which of these devices can cwv 95mkmhd c5(ause an acceleration in a moving car?
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net force on ay*ym x ui, o-1bpb-*dm 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 ta* ym,- xp*1mboub- ydikeoff?

  07.21: A box slides to the right across a horizontal floor. A person callf 5cd3jyf o,y7o*bkp;kug s*,ed 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 foroy7o *ck 5;*p gsj,3u bfy,dkfces exerted on the box.

  02.27: The diagram below shows three roller coastei .y u m6.vcj-4mouh,fr tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same ele u-yc .iv4jh,ou6f.mm vation 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 coaster tra1:h7 uit2y1m g)f iuyuse2dnp-8ai 7 vcks of equal length. Assume that on all tracks the roller coaster carts start fromuv7 -iui fi82hd 1 y7y:sptuna1)2meg 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 cartro6+;q xywmj yw;si7 o tvgvo e.bxo6n;amg(6,8lls frictionlessly along the curved track from point A to point C under the influence of gravity. What would be the direction vmny.6y jw; go68w, t+q;xgs(ieab;6oov7m x 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 which mclwr ,34n4egu6eo c d7akes 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/eec wldu7grn4c46 o3,s as shown in the diagram?

  04.40: A 6.0 kg block init dz+9q)n9gq pseq.n 3pially 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 static friction is 0.50. What is true of the friction acting on the block after a time of 1 second?z pe )q9d9nspgqn .+q3

  05.10: A homeowner pushes a lawn mower across a horizontal ph f ;(:mciu2tkkj+j:b atch of grass with a constant speed by applying a force P. The arrows in the diagram correctly indicate the directions but not necessarily the magnitudes ofh:ck m:2kjj ;t( bi+fu 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 of thek vxd(7/,6i 1odjbz iv following statements concerning this situation is COR,ikd(jvzidv x 16o7b/RECT?

  06.15: A crate of toys remains at rest on a 7d*wghu (/ue7hjc yu,sleigh as the sleigh is pulled up a hill with an increasing speed. The crate is not facdye7*/7h wu, (ugujhstened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?