99.36: What happens to the inertia of anbgrsw3x+cm ;n8r7(ge c5 lfy+ object when its velocity is doubled?

  02.14: An intrinsic propertyy(6w w8c,eak x of matter is one that does not depend on the quantity of matter present. Which of the followi8eycaw (k wx6,ng properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of thej m3iflsx y+x-e7p8w-mhy )u2 Earth. Assume the Earth has mass l-u7ixwfmps-2yxjh yem83) +$5.98 \times 10^{24} \; kg$ 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 f)zkyn, +t:pc pree fall near the surface of the Earth. What is the magnitude of the gnk)pcp:tz+,y ravitational 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 increase while in- ud ym:qos-kz2/ccw8hd17nts acceleratio:dn-zsco1umy-7q/nkh8 2c dwn decreases?

  00.11: A certain particle undergoes erratic motion. At every point i/fc4r-iim9x sx(+ bjk n its motion, the direction of the part9i+x xm( j-ci/r 4bskficle’s momentum is ALWAYS

  17.14: A block is suspended in the air at j9g + g+h0pynxea*w 0l1ud 0tithe end of a string held by a person. The person pulls on the string uniformly accelerating the +yd0 gngipu t1 e0a0x+9wlj*hblock 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 situations is the net force consioc3n)v *w ne:iqt +(atantly zero* :nanec3+o (i wtq)vi on the object?

  13.28: An object is in free fall cloo8..btdulnm6 o;z 4 pdse to the ground. A person intervenes and slows the object uniformly to rest. Which one of the following statements must be true about th.;uz8 dd p .nltoo6b4me 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, 1zj 6jqm omg8/and F3 of 70 N, acting on it. The magnitude of the resultant ofF1 a/ozm j18q6 mjgnd F2 is

  01.07: A force of 6 Ne.rvcd xc6jni+ 8bb emk:3j-, nwtons and a force of 10 newtons can be combine to form a rrn-v+j e38c xk b: ,6cdm.binjesultant with a magnitude of which of the following

  10.06: Which of the following statements is most closeljp9 q*ba )rdm7y associated with Newton’s Third Law o a 7jrpq9*dm)bf Motion?

  95.06: The reaction force defbi 60 oldi9*)mp4 onoes not cancel the action force because:

  14.14: A box rests on the floor of an elevator. The elevator i6ab4w*w6qt-kn8 4p vfwr x/tnfpz-s5 s accelerating upward. Which one of the following choices best represents the pfw8kt p-4 fq-w 6tb /54*znrsvxa6nw Newton’s Third Law pair force to the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls dot8/y 6x ,z/ncgqn i.ykwnward through 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 during the qnyg/y,6iz/tx kc.8 n fall?

  06.08: A baseball is thrown by a pitcher with a spe3ci/n0l 0bpqjegk :)e*4 my aled of 35 m/s. The batterswings and hits the bal)/e3lb :l4y 0ngqa0cpe*jimkl. The magnitude of the 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 bbw8 ,/djym*hif b))uis a calculator, also at rest. Which one odjf* m yw, /bi))hbbu8f 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 class : cerz j ljnsi(2m5+( .ui-ohgwere in lab conducting an experiment reum 5-2(nr .zh+ oi(gji clsj:elated to Newton'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 doubled while at the same time the myyc5:wf ar)vs a;*/6g+ 1zkf*-gn szdq4fqou ass of 4z)*fvosdysrcfnag ;-*a ykq 5:q u/6fwg+z 1the object was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated unifo3pf) lx h5-.yqkdom+w rmly from rest to a speed of 20 m/s in 10s. The magnitude of the y35 kl+qho dw) p.xmf-net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the roasn a.njcn)y8n9 9yqk i ;vg(l.d. The mass of the trailer is 4 times the mass nysac8 (kgin .yv9.qnlj n9 );of the tractor. If the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explains why large tractorx/ 6o uiw638qev)k far-trailer trucks gene / i3fu)6evka8w6 qorxrally accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rew.itdj8*jywd0 +c -wd ,yo m;pst on a frictionless rink throws a 2 kilogram ball, giving the ball a velocity of ojtcww,8;y0m+d iw pyj.d*-d10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface of t68o gyk mr2h8ohe earth with a weight of 100 newtons is accelera26g oky orm8h8ted at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is 3v5urdtab0z w6 ria.1r om57 uaccelerated from rest by a constant force of 2400 N. What is the speed of the car 8.0 s after beginnu1z7ib d6t.uorrw a r0 v53am5ing?

  98.32: A 3.0-kg block with initial speed 4.0 m/vnp.*p g zz4 z ,0w6nufavg)f,/pw rl/s slides across a rough horizontal floor before coming to rest. The frictional force acting on the block iwz a /gn0rv z,n,/p.*lfpfpv )w6uz4gs 3.0 N. How far does the block slide before coming to rest?

  95.38: A block with initial velocity 4.0memoz0f -wu 0sm*2pe2 m/s slides 8.0 m across a rough horizontal floor before coming to rest. The coefficient of frief-2e2pz0mo*0m uws mction is:

  09.21: A 20.0 kg box remains at res;-6 ibxy*jbhbq;8o j25 ndhslt 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 between the box and the surfacehyo-2xsnjbb 65q jh;*;id8lb 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 (edym0+gj+ x0p ni1um;swj- *qru lx8 uniformly to rest on a horizontal 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 (m1mxi;80+ unj +qrys x 0upld*-gjewthe block?

  00.21: A car of mass m slides across a patch of ice at a speed v withx i2,(zrnga8 *j+tzf u3fyw;y its brakes locked. It then hits dry pavement a+fj x,if wz*8ty y(n3ru zg2;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 slide 5f76 xg5cwu* nb2wtedbt*vwe)o1i, as across a patch of ice at a speed v with its brakes lont2f1,e6t**5duxbiobwwg vwa5e c 7)cked. 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's brae8;gnufx uow*0.m 6vqkes and skidding to a stop. How far would the car have skidded if it had been traveling 68ufonw;*xq emg0vu .twice as fast?

  99.39: The driver of an automobile must carefully c.* fb/k-rwttz0qfvykm l h18.ontrol each of the following devices. Whicw.fv./-lq fmkr8yb kz *1tht 0h 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 a weight of 15000 n*ejza (+o7g40sk yzy tewtons is 24000 newtons. About how much tye0js4z7 *kto+(z aygime is 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 the2 68e-a rjo3n+ )2ohiesshim * hp8wvp right across a horizontal floor. A person called Ted exerts a force T to the right on thhe ippv 6h n-+ja 322sewr)hio om*8s8e 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 tracks of equal length6if 5ak t6av-h uyck.bop3/+b. Assume that on all tracks the roller coaster carts start from rest at the sa o6/.-hv5ib ck uybtk6+a3pfame 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 tracko kv 1gq 7r,p)pk ele4b790udis of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves )e9pkod,ip0r4k77uv q e1lg bfrictionlessly 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 cuaau esl2k-n, q 5xw- ;1ly-neartrolls frictionlessly along the curved track from point A to point C under the nl,2n -q5 ku;x-a 1als-wyeeuinfluence of gravity. What would be the direction of the cart's acceleration at point

  02.40: A box with a ylmbl50t5b t 0rki9 .rmass 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 k0 05lbltry i9r.5tmb 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 llfne3x )2p2b/4 q. majt- wkkforce as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of static friction is 0.50. Wwlqk pt23n2-.m4/ek ja)xb flhat is true of the friction acting on the block after a time of 1 second?

  05.10: A homeowner pushes a lawn mower,mxe4r oh9uwohnq*q2w3r+7e 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 fo9or +hn q4whq2*wou,eem73xr rce magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crate on a table. Neither is movinnhwqk , /6xp:kqi 1vgm5y9(op /bako +g. Which of the following statements conceb9 /v:qyh qkpkmp(5n ia+xo,kog1 6 /wrning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh*evv0(i bax)5fk cl:u as the sleigh is pulled up a hill with an increasing speed. The crate is not fastened down to the sleigh. What force is responsible for the kb*xiv:0f5a c l)(uev crate’s increase in speedup the hill?