99.36: What happens to the iner+ d 3jekk:a4i)tyxu 2vtia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not depend on the x) p(9k g(sb4jj4nodoquantity of matpn)4j ksd9o(b(4 jxogter present. Which of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of thb) m: f xc(7cpawe19h3kj uet/vh(mh -e Earth. Assume the Earth has massp:7wvm1e k) fth je3u9hmh(a-/ x( cbc $5.98 \times 10^{24} \; kg$ 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 t* 9.fatizd:br he surface of the Earth. What is thef.*:r ziadt 9b magnitude 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 for an object’s velociti; tzg 9;6xppxy-ekg/y to increase while its acceleration decr69ey p-p;xz/;gtig xk eases?

  00.11: A certain particle undergoes erratic motion. At every popi5:fxf ;vuv) dlqk/i*sa+*ge,kd u ;int in its motion, the direction of the parq;i+gl,xup f ukfvks5 )*d /e;*d v:iaticle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of 2 gxgd ;vkl1p ( /e+pfc-kpyr6a 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 the force of the string on the blox+ ekr(;ypp/d p2 16- lcvgkgfck?

  07.18: In which one of the following situations is the net force constanp1) eq(nm(f-l+j ezt:wru8v/d g f og2tly zero on the objff/ozwq pdt:+ g1er- m ) 2ju(vg(n8leect?

  13.28: An object is ikpzn /+c2,2h1 n ba*q 7dhazfxwn+0ljn free fall close to the ground. A person intervenes and slows the object uniformly to rewn1h l2a7k* 0+b,n fn/hqd+zcjpzx2ast. 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 gravity is g.

  98.03: An object in equilibrium has three forces, F1 of 30 N, F2 of 50 N, and t--dg: ws,b7b 9ejml bg*:fo pF3 of 70 N, acting on it. The magnitud swgbj7f9,bt:d- e o*mpb-l:ge of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtoh m m.tr-b h3bme:5*qgns and a force of 10 newtons can be combine to form a resultant bg .qhmmrt eh5b3-m*:with a magnitude of which of the following

  10.06: Which of the following statements is most closely associated with Newtog wk;u+,fw r.1b-huh j1f8c qwn’s Third Law of1fh kgb.jfwrhq+ c8w1-,uw ;u Motion?

  95.06: The reaction force does not cancel the action force becabluzhaj+k;wn d5g xo8d3: (j1: 0lk ymuse:

  14.14: A box rests on the floor of an elevator. The elevator v/c.. vl/w)zl) s (opkx y9itpis accelerating upward. Which o/pvvo lzl(.) wxt/pi)sk 9cy .ne 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 with0 u7mqz6+bl3:g,*tzjwwi l sf constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance acting on the skydiver during the fall?6* m3:qujfg+ t,lzs0izw7bw l

  06.08: A baseball is thrown by a pitcher with a speed of 35 m/s r;2 2u/teufn,jnyof-8ti.ia . The batterswings and hits the ball. The ma inuij ftto 2n.,feu;/- 8rya2gnitude of the force that the ball exerts on the bat is always

  11.13: A physics book sits at rest on a table. On de1 a60 kbuf/htop of the book 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 tablf60a/b ed1 khue exerts on the book?

  05.06: The students in a Physics I class 7ifdd2xps6zbn8q6 x) were in lab conducting an experiment related to Newton'sbx72n i6x qfz8sp)d6d Second Law. 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 doubledk-,;tgg3:,u/or n0uioc- 0oa glbaos while at the same time the mass of the object wo ng0aku-3ta bo soi/,;lgc0o-g:r, uas halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly fromtr8d ck, swj-4 rest to a speed of 20 m/s in 10s. The magnitude of the net force acceleratingw jrdct4k, -s8 the car is:

  99.05: A tractor-trailer truck is traveling db (k5tnup5yx-(vwl +down the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerat+p xb(wl5u(y nv-t5kdes forward, the force that the trailer applies on the tractor is

  99.16: Which of the following princip:fc-wba ckdv8zv2 +lby* +tq(les best explains why large tractor-trailer trucks generally accelerate m* lv +fbwct+(y avqk-8:zd2cbuch more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a ),veilgj0lrk-wr i :52 kilogram ball, giv )l wi gle5:-jk,rri0ving the ball a velocity of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface of the earth with a weight of 100 newtona1 l.uv 8( ra/qzzdlp,s is accelerated avzzpl 1ua ,q(a l8.d/rt $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 lo0x eyx mnl5ut,1(7xkg is accelerated from rest by a constant force of 2400 N. What is the speed of the car 8l7m,loux xe(0nx t51y .0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a rough h1hz2tc:ebs4x r -ol)borizontal floor before coming tsb c- l2e)1 xzhbr4to:o rest. The frictional 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 veloc:kog5, b- v h.xtfn8etity 4.0 m/s slides 8.0 m across a rough horizontal flooh - 5ftkb8g,xvt:eo. nr before coming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizo/3hcq(o cw), i wpq+mcntal surface while a person pushes directly to the right on th(co i3mwcq)+ /h, qwpce box with 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 moving at 8 m/s acbke+;20rqwb9 6;/2rj2 ednujoab ekvcelerates uniformly to rest on a horizonta/rwoq+nj9jb2r k6e; d bv2e ka0u 2be;l 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?

  00.21: A car of mass m slides acrossz l,66*gzhcoyw m*0c48 xxnf 6jh)eqz a patch of ice at a speed v with its brakes locked. It then hits dry pavement and skids to a stop inyh8cw0qcnglez4 *zfxxj,h*6m z) 66o 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 af; ,w gy/rh:y fs:)z jw/y7pjo patch of ice at a speed v with its brakes l wyysg/fow:7 / ,jy;frzph:)jocked. 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 speed of 2v, it would have skidded a distance of

  04.32: he driver of a car makes an emergency stop by slamming on the car'ora9d d+9t3shgo 8b7cs brakes and skidding to a stop. How 38dhd9astrog c9+ 7obfar would the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully control eac10tyh 6g t2kfwzg 8xk*e 1/crsh of the following kw cg6t8krxzh fe01s/1 2gty*devices. Which of these devices 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 )hpq4+ x9xy4 uo1.wscft3crh 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 surfaceo).uhc+4 qys3 xp9ht w1xfr4c of the Earth at takeoff?

  07.21: A box slides toh.r7rxd( uj. un,d7v e the right across a horizontal 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 frx,u7ej (dvnrud7 .h. riction 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 zs/c q:i6f cpoc.(5v d-i6b-g : jnvwfequal length. Assume that on all tracks the roller coaster carts start from ref6po jqigwfv-n :(c s:ib6 /c.cv-d 5zst 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 be traveling the fastest at the finish?

  02.28: The diagram below shows three roller coaster tracks of equal length. As m,6vopp-/b mtsume that on all tracks the roller coaster carts b 6 t/-vpmmo,pstart 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 curved trmv;o jv zq3n9x)(o9u f*wa5ko77ia lp ack from px)m n7liojvo9;3akq vz*(97pauf5 wooint A to point C under the influence of gravity. 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 floo78 ;yq2zrjqe mr 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 250 nqjyqez;7 2m8rewton 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 pushet hx/+t rn23 tkm3;atvd 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 n/;tt3 3 +2maxrthtkv second?

  05.10: A homeowner pushes a lagm13+ qz 9pvag.qx2oawn mower across a horizontal patch of grass with aazx9qp.3 +1ga vmqg 2o 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 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 mo6fqr0yp(q hhem 9+sz0*krtn-ving. Which of the following statemenh0k*p (eq +m609 yr qs-tzrfnhts concerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh qz2ls0bycbpo.y/c2/ is pulled up a hill with an increasing speed. The crate is not fastened down to the sles/02zocy / lyb.p2b cqigh. What force is responsible for the crate’s increase in speedup the hill?