99.36: What happens to the inertia of an object when its velocity isyepw)a .(vmnn*- cz .f doubled?

  02.14: An intrinsic property of matter is one that dob-ztmkxxw w6 li1:8-ett x,9v*hnor c x7(l5 oes not depend on the quantity of mal *lex5o7t t(vi nxz,rxob-6w:c-8t 1 9mhxwktter present. Which of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the e;h 8q+;)t 0hu )gjjla1imsb lEarth. Assume the Earth has massmj);ehbs u g0la+81 qt) ;lhji $5.98 \times 10^{24} \; kg$ 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 * 0:w+z c (tco0niijkuis in free fall near the surface of the Earth. What is the magnitude +0wz nc0ui (co:kti*jof 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 velocity to j8d,+gzfeejz *b;)x brc +(bsincrease while its acceleration decre;)(z j,csbrx ++gbebdfj ez*8ases?

  00.11: A certain particle undergoes erratic motion. At every poi flj0t9hu v6p +cv6 o97zbrlr+nt in its motion, the direction of jpv6 t0r b+h9 ollz7fv69rc+uthe particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a strins:vynb g1fw+7v)w ber cupp 3,:1erl2g held by a person. The person pulls on the string uniformly acceleratinyvl,e): :7e3bcvr1s+w2 fupgprb n1wg 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 od;0/ey9cz+- oq ,* drnjwz gjrf the following situations is the net force constantly zero on th/r,c yr d 0j z-doqj9w+*egzn;e object?

  13.28: An object is in free fall close tgsban s33)it5w a 5qlxr+8q,z hg.,ito 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 magnit ga8q.iax ngl5hzi5+ ,s3tq,)3r wbstude of the acceleration from gravity is g.

  98.03: An object in equilibrium has three forces, F1 of 6+jbh 7xynhg( l*zd2t30 N, F2 of 50 N, and F3 ofb y7 zn+*xjhg(6tdl2 h 70 N, acting on it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtoyb ou.2g9+, eh udwiy*ns can be combine to form a resultant with a magnitude of whg92 *db. uy+ eo,uywhiich of the following

  10.06: Which of the following statements is most closx.s)1(e)ugsto f(x wcely associated with Newton’s Third Law of M)og ( suetw)1(fx .scxotion?

  95.06: The reaction force does not cannx(y0v l/* f1dgdp4 facel the action force because:

  14.14: A box rests on the floor of ancb1 d;w 9qs1qq elevator. The elevator is accelerating upward. Whicqw1 1; dqc9qsbh one 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 tqqmkg5-uk9 4ynf6o )2h wcp-v hrough the air with 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 hp62qv k4-u95 o ymc)k-fnwgqduring the fall?

  06.08: A baseball is thrown by a pitcher with a speed of 35 m/s. The batterswaeks)7.dl sldp: w :tpj +o4/yings and hits the ball. The magnitude of the force that the ball exerts on ts4 j7e:o:d/akdpy+l .s tlpw)he bat is always

  11.13: A physics book sits at rest on a table.3 ,;8r/c1xsak vgdez f On top of the book is a calculator, also at rest.sgxc/,av81k;redz3f 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 c.tvokbyyets*7,1 bj 5/g+ 8 pxychd4blass were in lab conducting an experiment related to Newet.jby,/5o1gv+y7bdx ht s *8bk yp4cton's 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 doub8g 8pav8/5ocperpy 2f led while at the same time the mass of the objec2 5rp8 /8ypav8c egpfot was halved,then the acceleration of the object is

  96.15: A car whose mass isbfar+ sxms-) arrbi/:i h0n2 0 1500 kg is accelerated uniformly from rest to a speedabs i+/x-n af:0r2 )b0isrhmr of 20 m/s in 10s. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailesnkyf ig4 vk/3)p/obkwa,c 01r truck 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 tra / )i 1a,kgck wkbs4/3yn0povfiler applies on the tractor is

  99.16: Which of the following principles best explains why large tractor-tr :e hw s-0zaz 4u+;nw+xy5yoflailer trucks generally accelerate slhxezy5na0-wf o :u4+ zy+;wmuch more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictizt(voc9q/,/ :g6jttg ht ;lpronless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement describes the subsequz/ l,6vh (jqg :c 9ttr;pttog/ent motion?

  00.13: An object nea58u o 7.e fmuvoqpq52zr the surface of the earth with a weight of 100 newtons is acce vo725fpmo.que5 qz8ulerated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated f,hhax*ays5,t1 3ig pe rom rest by a constant force of 2400 N. What is the speed of the car 8.0 s after begint,1x*35 sea ghhayi,pning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a rough horizwes2b2*3qse dontal floor before coming to rest. The frictional force2wq3 d* bese2s acting on the block is 3.0 N. How far does the block slide before coming to rest?

  95.38: A block with a,x-0kro n whi8udi ;piom,/:initial velocity 4.0 m/s slides 8.0 m across a rough horizontal floor befor8 ;n,io,xmwd: hk -0o iapuri/e coming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a person pusyr j1zs0j0er7hes direcr701yzs0e jrjtly to the right on the 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 2mjat06g cra8 moving 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 follojtg02rm6aa8 cwing choices best represents the coefficient of kinetic friction between the surface and the block?

  00.21: A car of mass m slides eflww.w .8 sit9 o)o+nacross a patch of ice at a speed v with its brakes locked. It then hits dry pavemeo8. .wwt+ wn)iflose9 nt 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 ice ak:bimlw;b n91zr: c to,6 de4 8v u/uhg9sswx0t a speed v with its brakes locked.8d 9mil :v;9ur1z0uww esk4b , sh/bx:c6ngot 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 makkz5b-*fcgh7.eab(1q*lvpiv es an emergency stop by slamming on the car's brakes and skidding to a stop. How far would thbb* 1q pze-l7f5kigv*cah(.ve car have skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully control each of the following wl4f,bn ./sycqof4-i5 lg/+aowp1 iz devices. Which of these devices can cause an accz /nf4 l,c.o-/oap 5i1yfsqw 4gb+ liweleration 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 2400p cn5z1zm,0ng20 xr ;va+obt v0 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36 m/s t+zzn g a2mp1;x0b,n vo5cv0rnear the surface of the Earth at takeoff?

  07.21: A box slides to the right across a horizontal floor. A person 89 2qnqljo4vmerq-4ztb sr 5 /called Ted exerts a force T to the right on the box. A person called Mario exerts a force M to the left, whic-v4e2 ob9z8 s4lqrrt m5/nqqjh 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 th/emxo*kj*ek8 04uoxl ree roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest a *k/0oe*e xm8 4ujkolxt 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 coasterxnh9/e py)tvkz),muyah rat ;1+te 1: tracks of equal length. Assume that on all tracks the roller coaster carts stt/1 a,9t vya)nrxkheh:)py; mte u1 +zart 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 cart hx:vc vzaglp/n8.t,3 rolls frictionlessly along the curved track from point A to point C under the influence of gravity. Whc 8v3g.xan/vh zpl: t,at would be the direction of the cart's acceleration at point

  02.40: A box with a maspz8f l2wu/s)rp6 y) nss of 50 kg is dragged 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 250 newton force on the rope is required to move the crate at a constant speed of 20 m/s as shown p)r ps2zu f86sywn) l/in the diagram?

  04.40: A 6.0 kg block initially at rest is pushed xpueithn:hb /h02p7 s u,c57j9br 1fuagainst a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 wbf1s0e7c h7j:upx/ hu i 5pbn9hr2 ,uthile the coefficient of static 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 pq.uc tn3adkx e;,4q6a lawn mower across 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 magnitudes opu,. ;q346aqxtecd nk f 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 ofzm g/a:; 2cnqa the following statements concerningzca:;g qma/2n this situation is CORRECT?

  06.15: A crate of toys relgfvfow5ag:;+fy) v; mains at rest on a sleigh as the sleigh is pulled up a hill with an increasing speed. The cratvy l :vof;g 5g)+f;fawe is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?