99.36: What happens to the inertia of an object w hj 6j7gqj,wf/hen its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not depend on the quan ks)q0u nn0c)rtity of matter present. Which of the following properti )q0crs)0unn kes is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. gdhk 07-e o/weaw 3:lsv-8 jmcAssume the Earth has masva o: --0d/m kl8ecshgwej7w3 s $5.98 \times 10^{24} \; kg$ 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 fa ,/if-h;blqj t.hp q(cll near the surface of the Earth. What is the magnqfj(b c qh/- .plt,ih;itude of the gravitational force acting on the earth by the sphere? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible foh fpj jay;/drq+scu,8y 5 us;5r an object’s velocity to increase while its acceleration duyj,5yqsua 8;+ 5pfhr scd;/ jecreases?

  00.11: A certain particle undergoes erratic motion. At every point in l)j.0ooqtlo 0 its motion, the direction of the particle’so q0)lojtol0. momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string held by a per3xvdb1j i6z) o8n(-y,w ea /i.fwcaalson. 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 the force of the sj3 1zn-vfxal w( iweb 8ocd,)a6/y.aitring on the block?

  07.18: In which one of the following situations is the net force constaq2 e,-lq+johu*oa vboptw8 -)ntly zero o 2h o,qqoj-)ealvu - +bwpto8*n the object?

  13.28: An object is in free fall close co p1rr mbvq3u6.1sl(c ico 3yxut8-7to 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 mcu.6 3ry8osio(q7- uccvl1 rt1b x3pacceleration 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, F2 pxdharto7 d.2qc0if g 5n;/w/ of 50 N, and F3 of 70 N, acti.d0acp7f h xq;2w /n5 d/togring on it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 zkhv0:6 x2m xa(,-oo8uyu uo xnewtons can be combine to form a resultant with a magnitude of which of the fol u(x-2,o :ay8o vuhom6 xz0kuxlowing

  10.06: Which of the following statements is mny( c;k6 vu35nm21r: yox:i eeij+pt host closely associated with Newton’s Third Law of Mot n1(x mr k + uhc5yony3ivt62jiep;e::ion?

  95.06: The reaction force does nj62tg 6bgwmj ; /jdt i.vyt*x7ot cancel the action force because:

  14.14: A box rests on the floor of an elevat lyteb+3a:: bvoa61o u+v :wfwor. The elevator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the v1uav w3l b: e+6oyot:+fb:aw gravitational force acting on the box by the Earth?

  15.15: A skydiver falls downward through the air withc)c-)ebey0 guvp+ ha vqdh 8k6cr00-p constant speed. Which one of the following choices correctly describes the New c0p+y b v)p-vger-hed h068ckcuq)a0ton’s Third Law pair force to the air resistance acting on the skydiver during the fall?

  06.08: A baseball is thrown zwzu11:aoonq (rcx62 by a pitcher with a speed of 35 m/s. The batterswings and hits the ball. The magnitude of the force that the ball exerts on the b: wxa2n11o6q( rcuzz oat is always

  11.13: A physics book sits at rest on a table. On top of the book is a 9dx8b h.rhlh( calculator, also at rest. Which one of the followinhb.h(rld89 xhg 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 Physicupf00o kdev :9s I class were in 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 students mak dk9:0 p0foueve?

  99.03: If the net force on an objfw o u:x(nv)j.ect were doubled while at the same time the mass of the object was halved,then the acceleration of the object x): un(wof.jvis

  96.15: A car whose mass is 1500 k)mv+0cd3 wv -ip mw)zkpe.bb :g is accelerated uniformly from rest to a speed of 20 m/s in 10s. The magmvbwm-cibp3p .0e d+): k )zvwnitude of the net force accelerating the car is:

  99.05: A tractor-trailer tmtgy1d;nlw*js8 f. bj+r 0v+( er(xgjruck is traveling down the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the trailer applies on 0jl 1vjrgw jf(e+d +s (.g8nm*yxbt;r the tractor is

  99.16: Which of the following principles best explains cvit rfm/d(:*faqa8*why large tractor-trailer trucks generally acceleraf*c8/ iaqf m*r dv(ta:te much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a fr4*i9ea 6xs nvsictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement ds*v9x e4 an6siescribes the subsequent motion?

  00.13: An object near the surface of the earth with a weightj. jlnr ao nk*6z 5,,eiksrb3+ of 100 newtons is accel ra,ri*5.6 k+e j3znn lko,bsjerated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is ace*9 rth;)ylsogde lp* 4t8 kp,celerated from rest by a constant force of 2400 N. What is the speed*he r,ts;gt e oplk8 )4*ld9yp of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with3;inclrq.0v+rsr-e yosng 7 ha 2qx 6grv6f*1 initial speed 4.0 m/s slides across a rough horizontal floor before coming to rest. The frictional force acting on the block xyhrrvcg l;.7q21rg636e v0 saqn +sfior-*n is 3.0 N. How far does the block slide before coming to rest?

  95.38: A block with initial velocity 4.0 m/s slides 8.0 m across a rougz)ofwu-- vfm:g , +yzsh horizontal floor before coming to rest. The coe-zwovy) f-z+ mg:, usffficient of friction is:

  09.21: A 20.0 kg box remains at re 9v0w huz.adl4st on a horizontal surface while a person pushes directly to the right on the box with a force of 60N. The coefficient of kinetic friction betweenl0.9z u aw4hvd 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 accelerates uniformly to rest on a hor) opkzn :q)h/sizontal 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 surface and the block?o) hkznqp/:)s

  00.21: A car of mass m slides acggd1 o 45qp/3- tmqtwaross 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 coefficient of kinetic friction between theqg 1ptmadw4-gqt/ 3o 5 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)eg(i l) gaenv6 opbc.;+jy+4kvd3ca speed v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coeffi ;)iv+nj)(3 veadp g.ce+6boay gck4l cient 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 slamming o1 3tzu7 s+9qesjt(u cwn the car's brakes and skidding to a stop. How far would the car have skidded if it had been tratqez 3cwt97u1 s j(s+uveling twice as fast?

  99.39: The driver of an auth g3-wdxyh4 3yomobile must carefully control each of the following devices. Which of these devices can causehg- 3yx3 yd4wh 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 is 24000nft/ md9kxud e)g+f*4 newtons. About how much time )x+/g9n4 fdmd *ktf ueis 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 right across a horizontal floor. A pe7 :2zsp ,w qlj6 ;ewtcafep8v0rson called Ted exerts a force T to the right on the box. A person called Mario exerts a forq6cts:;7za e2w80 ,evpfj wplce 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 b26pe1wnpncv ; uv k.-jelow shows three roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same e;cnvp peuk-w6 jnv1 2.levation 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 rot/bd8 iz mkktjc.:i.p p(5xc/ller coaster tracks of equal length. Assume that on all tracks the roller coai i.tkk(p:jtpc.xb 5 / 8z/mcdster 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 reach the finish first?

  02.29: Assume the rollercoaster cartrolls frictionlessly along the y(jthagh;ln /)0g ) yo2f w2 blb+.sjacurved track from point A to point C under the influence of gravity. What would be the direction o 2y))y fhgls/ao.btaw; 0b(jj+2 gnlhf the cart's acceleration at point

  02.40: A box with a mass of 50 kg is dragg mk*(i0inskw rym/v,5ed across 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 friction between the box and the floor if a 2vs*5k rni,m(mwk/y i 050 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 im7 e4 lbu 6l)j-t5:nfxshf1 lis pushed against a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of static frictis6:tun 4-jf7 llhf5 )elmixb1 on 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 horizontal pyd9im .gd)+ uzatch 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 of the various forces on the law+.gu) ddziym 9n mower. Which of the following relations among the various force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans agaicbox;qlq- . 15 .4y1ajncpdff nst a crate on a table. Neither is moving. Which of the following statements concerning this situation is CORRECT? o l1nf 5cqdjb c;4pfxy..-q 1a

  06.15: A crate of toys remains at rest on a sleighd90z o dr:8 k5owzogq2 as the sleigh is pulled up a hill with an increasing spee8z0 roz: okqogd5w9d2d. The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?