99.36: What happens to the inertqj5uv(zge6l4 lcu* ,x ia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not depend owb7y)-e xe/j;jfo+o cn the quantity of matter present. Which of the ;eyfo7oxj )e/ +j-bcw following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests onq.a5;k chwqvy:o,gyh9gn7 y1 the surface of the Earth. Assume the Earth has mass nowg7y.;av q 5:g9 1hyq,ychk$5.98 \times 10^{24} \; kg$ 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 the surfac10zf;dt).4 nkr lf nkle of the Earth. What is the magnitude of the gravitational force rln0t) kfd .l4z1;nkfacting 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 vel;bzlcmsa- cpq7j.uo6qu2:v 7 t. z6v.4 yjsruocity to increase while its acceleratios4c au6.:j6b7u .-rz7vyq 2zqo.mls cj utp;vn decreases?

  00.11: A certain particle undergoes erratic moti5.x w)q sajfex g;k()ion. At every point in its motion, the direxx g(wa.f s5j) )i;kqection of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end o ( 2ehhs3s0fycpv,i/x f a 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 identi0s fy2is h/xvpc(,3ehfies 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 net force constatq6/ay eoztm) 92 0yaoso2a 3ec69jfzntly zero9easeo62jtmz90aqy c 2 a6t3yoo/)z f on the object?

  13.28: An object is in free fall close to the ground. A person in4g 6h p4+zmojknv 3w9btervenes 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 magni3k o4z wvhb9g+p 6mn4jtude of the acceleration from gravity is g.

  98.03: An object in equilibrium has three forces, F1 of 30 N, F2 sp e0sg*l vt;9+-:,vvyf ctuhof 50 N, and F3 of 70 N, ac*eyh0tg,clv+p;vf-9 uvt s:s ting on it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and0odl8u+nf x p61zil1d a force of 10 newtons can be combine to form a resultant with a magnitufuolx+86 0zd indpl1 1de of which of the following

  10.06: Which of the follp 8,, 9q /dm7rjrnoarr/qco8jkall 7;owing statements is most closely associated with Newton’s Third kqj mnad a;rqjr/r9lo 78 ,cr78lo/p, Law of Motion?

  95.06: The reaction force does not cancel the act2 )xh q(xzac;zrfz ohk182i;oion force because:

  14.14: A box rests on the floor of an elevator. The elevaipzrl 44liqr,/p:8 rx6kml3 oyh9b6d z*qjd,tor is accelerating upward. Which one of the following choices best represents thrr/pohdml j6izq,4ql4z 9 :*rpkl,3 8bixy6de 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 airg x0y 7,:bdk2yptj4x9ggbtr 4 xh;f+t with constant speed. Which one of the following choices correctly describexry+g,xbt g:fb4kydtt;jh p079g4 2xs the Newton’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/s. The battersww2m ue7ixro3*35a etgings and hits the ball. The magnitude of t r3 w*iu7maxeoegt35 2he force that the ball exerts on the bat is always

  11.13: A physics book sits at rest on a table. On top of the book is a calculat1h b. )+ xvx6 4dwcmqjk.v6vapor, also at rest. Which one of the following choices is the Newton’s Third Law pair force .14jvk qx wm+ap b.cvvd6 xh)6to the force that the table exerts on the book?

  05.06: The students in a Physics I class were in lamle8l l:hc0ape6 ezg6a5 :m *bb conducting an experiment related to Newton's Second Law. The collected data were displayed on the graph at :ecm6 lg6p*ll:a eb z5e0mah8 the right. From this graph, what conclusions can the students make?

  99.03: If the net force on an object were doubled while at,7eojh,z1 wa k the same time the mass of the o,w o7zh1jk ,eabject was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is acceleratedkbv9lv5em06 -f+6rhac ie*yl uniformly from rest to a speed of 20 m/s ikiblvv-6 aye+rc5h 0 le9f*m6n 10s. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is tr):la 6eno1dfk aveling down the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates 6dnf:o)1lae kforward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explains why large tractor-i:mspnwt+ 84i trailer trucks gei4t:sm p8w ni+nerally accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a t4uuz1jtg2d: * hvd6y2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement describes the subsequent motiont24u: ht6z*j vg udy1d?

  00.13: An object near the surface ofw5trm kny6+zfu1 aw61 the earth with a weight of 100 newtons is accelera6k6a5 1mnwfz1ytwr u+ted at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated fromzg c 5 p,2 yub)-j7sd4hecy6om rest by a constant force of 2400 N. Wh7 ,2cy5 )zm-uyh6c bjos pg4deat is the speed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with inmf)n ,i5ql4u xitial speed 4.0 m/s slides across a rough horizontal floor before coming to rest. The frictx 5n4qufim) l,ional 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 velocity 4.0 mabq23 (fkf-s m/s slides 8.0 m across a rough horizontal floor before coming to b2mqs3f f-k a(rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surfag,q sn o/lz-9sce while a person pushes directly to the r /-q ols9,sgznight 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 moving at ukp w s 42moaub65l1*w8 m/s accelerates uniformly to rest on a horizontal surface. The block traveau m1usbk*2o l65w 4wpls 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 mass5uz5;zp gsmf z0cz +m; m slides across a patch of ice at a speed v with its brakes locked. It then hicgzs5uz mm+ fp0 ;;5zzts 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 abtrta;1 3 ip4mcross a patch of ice at a speed v with its brakest4; ritm pba31 locked. 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 stopnu *s zo.zve*baz8d3w2jn1 i gz+st+vi l78;m by slamming on the car's brakes and skidding to a stop. How far w*3m+;zn 8t2* szja8iznuo 7.izdvg+b s1lve would the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully control each of the fo + js :*k9-fzdy-2 id h d;f*u7mrjshud3raiv1llowing devices. Which of these devices can cause an acceleration in afh2 kzhuvjsds3r9df7i-jd;ruim1*dy * a -:+ moving car?
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net force on a rocket withdvj5whs 2k rv3as30v- a weight of 15000 newtons is 24000 newtons. About how much time is needed to increase the rocket ’ spe3vs-v 230 kaws5vjrdhed 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 person ca*:lx6- nzga:sbsp*;.uxoiai lled Ted exerts a force Tl.nug z:oix*xpsa6;*i b: -as 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 forces exerted on the box.

  02.27: The diagram below shows three roller coaster c ij7l c2e6hxcj8u; d)p is+24ze6a pvtracks of equal length. Assume that on all tracksahiuc x+p6 i6j)4;jdc vcp22ze7 8sl e 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 bele,shk dhq6 rrs+(q7lfo 1gy8 6ow shows three roller 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 efd,66+7h1q8okrgl sh(qysr .
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 rollercoasm t:xolva34ouxm66c3 a :0wxster 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 acceleration o4ax u:xl 6xmw6vost:mc3a03 at point

  02.40: A box with a mass of 50 kg is dragged acr 4cr ak:0d7le qc5n3s /9xrvitoss the floor by a rope which makes an angle of 300 with the horizontal. Which of the following would be closest to the coefficientnqe4v0rd3c cr a7x i k/:l9ts5 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 1006;dyb* xhkncb. z( *up N force as shown. Thecoefficient of kinetic friction is 0.30 wh*k;( yb hp.6 cubdx*nzile 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 p gq(c4jyc d) *;zj8zsk9u2cau ushes a lawn mower across a horizontal patch of grass with a constant speed by applying a force P. Tczc9dy84 cqj) ;2g*(kj auu zshe 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 s6c org 2eloag.5au6:a table. Neither is moving. Which of the followi6l a5gougs:croa.26 eng statements concerning this situation is CORRECT?

  06.15: A crate of toy:df,ln k-kw/ ks remains at rest on a sleigh as the sleigh is pulled up a hill with an incrk:k fnd,k/ -wleasing speed. The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?