99.36: What happens to the inertia of an object when its velocity is doubled?upb5f5y3-tkp

  02.14: An intrinsic property of matter is one that does not depend o t 95n8oyyatm:/p, cx.li9k4(essgg yn the quantity of m ygy:5ekm n8.st otls99xgc( y,a4/ipatter present. Which of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rj 9*b grh4hrpa;+ij)vests on the surface of the Earth. Assume the Earth has mass 4apjhvr;h +ji9)gr*b $5.98 \times 10^{24} \; kg$ 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 issc zw,kvslhu19. k/ )i in free fall near the surface of the Earth. What is the magnitude of the gravitational fo.kusi / 1)wv,lzshk9 crce 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 toqiv 5 x/6d; 2szn.xgll increase while its acceleration decxld2nig /. l5qxs6;vzreases?

  00.11: A certain particle unde +b.rcx3;mhinva/ f b.rgoes erratic motion. At every point in its motion, the dif.ihn +3;.cr/abbm vxrection of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string held bgeyeaj ()z ony f 4.0km+dht:3y a person. The per. aftky3 :m +o hn4ged(0ejz)yson 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 block?

  07.18: In which one of the following situation 1 im68qeen*ebe /(4baziwr3ks is the net force constantly zero4ek (qe8e1w r*z3b6a /einim b on the object?

  13.28: An object is in free fall close to the ground. A perrf 4;o5kwpi sp,i a3j5son intervenes and slows the objec5 5,k4isjpa i3wofrp;t 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 gravity is g.

  98.03: An object in equilibrium has t sf7r0vgp(st *hree forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it.vtfrp s0s*(7 g The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can be comf/4l5n dc eya/o d)3+(xon pfbm5:hqjbine to form a resultant with a magnitude of w:a+bc ln/ (x/yq4oeff3h d 5j)pn5dmohich of the following

  10.06: Which of the following statements is most c)b: uty5up,k.pk 6i zblosely associated with Newton’s T5u:6 t k)p .bizkbpuy,hird Law of Motion?

  95.06: The reaction force do;zbpx,-v o(q ke3 dmr(es not cancel the action force because:

  14.14: A box rests on the floor of an elevator. The elevathsy8 f*2a2kvt iip4;nor is accelerating upward. Which 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?i* sk82; ftviyp2h4 na

  15.15: A skydiver falls downward through the air with constant speed. l +l u- h,kssfk ci5of1+0hoz(*ed o5u Which one of the following choices correctly describes the New 1cs ,ohhz0f- l5+ukfsi5u*e+ lo(okdton’s Third Law pair force to the air resistance acting on the skydiver during the fall?

  06.08: A baseball is thrown by a pitcher with a speed of 35 m/uw y..xp*-b d,gw7f yxt8wt f.s. The batterswings and hits the ball. The magnitude of the .xf-.,by8w yt*p xwgud fw 7t.force that the ball exerts on the bat is always

  11.13: A physics book sits at rest on a table. 6j42f-4db bbb,tx,ghf.eczdOn top 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 table exerts on the be xd -d4tgffb,2c6.zhbj4 b,book?

  05.06: The students in a Physics I cla6llebfrz u*0im g:/ 33wmur*bss 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 gra3*rmze wrlbu/ g* 0 ui:m3lb6fph, what conclusions can the students make?

  99.03: If the net force on an object were d0tby(vq c*ari,w6r +qq 7jrf :vg7( enoubled while at the same time the mass of the object was halved,then thytgrv *qrrwq,e 6f0 b7a7(v(cn j:qi+e acceleration of the object is

  96.15: A car whose mass is 1500 kg is aq:u * y+d+sgi jkqwsi 4/vz4hn:6i+ ojccelerated uniformly from rest to a speed of 20 m/s in 10s. The magnitude ofy:wj4+4ovn6:ihi+jq zd / i us sk*gq+ the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass of the trpy vsz2pn 1)fu6woo*)n*,f 7o 5nm xbfailer is 4 times the mass of the tractor. If the tractor accelerates forward, the n 2yzsfmf*5)nwp * p1u7bo x6)onvf,oforce that the trailer applies on the tractor is

  99.16: Which of the following principles best explainsz1 :xn v.esu3e sho ).ys 5mn moz-5-8jnxyel9 why large tractor-trailer trucks generally accelerate much more slowly thasl ejzmxeon5 1mh v 8ux 9-oyzs:3s .en5.ny)-t automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a 2 kilogrambk4 oup8ztp2 ) ball, givinto8 bk2 zp4p)ug 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)jm ye7 yl;ar8v*h vg. with a weight of 100 newtons is acceleratedevr y )mhvl.yjg;a8 7* at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is +zd9-dkxd )lru a1m w)1200 kg is accelerated from rest by a constant force of 2400 N. What is the speed of tzdlddu+)a 9k )1wx m-rhe car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial 8v f m5t.qsg;mspeed 4.0 m/s slides across a rough horizontal floor before coming to rest. The frictional force acting on the block is 3.0 N8v q.m;msf tg5. 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 rough n e1:4x4 s2fd 8ist*xycntj.fhorizontal floor before coming to rest. The coefficient on1 fx2yc4e8 d:stf4sjitx.n*f friction is:

  09.21: A 20.0 kg box remains at rest on a horizontalkr,mz,c*ui7,v.zq dx surface while a person pushes directly to the right on the box with a force of 60N. The coefficient of kinetic fric,z*m i q. ,rvz7,uxcdktion 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 + .fnfnvk/4ozsk4u3qaccelerates uniformly to rest on a horizontal surface. The block travels a distance of 12.0 m ./ nuv4nsozk3kq4ff+ 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 slidew5l.u*lcl.0o* icu nls across a patch of ice at a speed v with its brakes l0.l n o*l *uwclluci5.ocked. 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 kjd.bxz;n o46s i (hg6m slides across a patch of ice at a speed v with its brakes l4 xgdjkn(.sh6 o;z ib6ocked. 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 ft/z* wr.oc5cn3yuhv jy -3 d-stop by slamming on the car's brakes and skidding to a stop. How far would the car have skidded if 3o3fcywnh-tcyr/.zv ud *5 j -it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully control each of thrsh72gl+:ay+ ufw+dy 1ta t2de following devices. Which of these devices can cause an t2+yt++fsdg7la:1a2 y hr dwu 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 go)77vk3gqxujxj9 7e weight of 15000 newtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 3g7quo 7xev3kgx j 7)j96 m/s near the surface of the Earth at takeoff?

  07.21: A box slides to the right across a horizontal floor. A;8cfacldaq bc/.6+e 3z (tg2bu2 ylsv 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 frictzgclbcs;e tf6ul(va/ 2b23 .y8 cad q+ion 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 equal length. Asss:tzf6 t yi+ l-,+xnbwume that on all6+-wit,bns y zxt:f+l tracks the roller coaster 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 be traveling the fastest at the finish?

  02.28: The diagram below shows three rolle7em*qb/ qn,i6/c ed jvr coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly over the tracks to the finish.6eq qm/bd7 v,e/ijc*n
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 rollerco 1cb3edq4msl 7aster cartrolls frictionlessly along the curved track from point A to point C under the influence of gravity. What would be the direction of the cart's accelecb73 mes1lq4 dration at point

  02.40: A box with a mass of 50 kg is dragged across the floor by qlww0kf*d 7b6m.g(u va rope which makes an angle of 300 with the horizontal. Which of the following wouk6b7v qlu0f*d(gm . wwld 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 in the diagram?

  04.40: A 6.0 kg block initially at rest is pushed against a wall by a 100 N 8yu0 33* .nf0mvc hlce:h.qjsjy .rs l46tg jxforce as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of static friction is 0.slug. smjxc43lq f0hjjvhy e8 *r03c. 6.:tyn50. What is true of the friction acting on the block after a time of 1 second?

  05.10: A homeowner pushes a lawn mowerph7wt bkg-+h 2ycjy3q,)*euk 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 of the various forces on the lawn mower. Which of the following relations among the various force magnitwhp*t-2c )ey,yk +g kub7jq3h udes, W, f, N, P is CORRECT?

  06.14: A book leans againsk*)y h zxt ()-y9mbfq4bxw9p *ihq qf6t a crate on a table. Neither is moving. Which of the following statements concerninq- (hiwyhbt4*6pxff9 q)q) mb* k9xyzg this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh ,o9g/-c 2mnta sooy o*as the sleigh is pulled up a hill with an increasing speed. The crate is not fastened down to the sleigh. What fa o ,oo/mt2csg9-*noyorce is responsible for the crate’s increase in speedup the hill?