99.36: What happens to t var.o)dp92idg6p i+ ehe inertia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does n;smf .b d)j-kgot depend on the quantity of matter present. Which of b-)s jfmd g.k;the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume t pv -.01mm3jbxk7ul czhe Earth has mass 7xc.b3vklj-u m 1pmz0$5.98 \times 10^{24} \; kg$ 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 surface of the Earth..) x3zzjt0tp v What is the magnitude of the gravitational force acting on the earth by tp3tx0z.t z)vj he sphere? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to increase while its acbvod ,(9epvfmvg :34gceleration( 4vvbeo9v,fgd 3g :pm decreases?

  00.11: A certain particle undergoes erratic motion. At every point in its moti3 6eqv9 nac;jxone nvj39xc;q6a, the direction of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string held by a perso(9m02 uzdu)a--pcget :smavd n. 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 Thir a0t-cmpvg2ds-d e( m9u:ua )zd Law pair force to the force of the string on the block?

  07.18: In which one of the following situationjmi/m*qd *(t ns is the net force constantly zero on the objecqn(*jitmm/d * t?

  13.28: An object is in free fall close to thdpc zj 2tt+r9e ec xj5f81-imh7z;-i be 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 magnitude of the accelerati+jme pe ;cb-2chz-tjfirt8 9 1xz7d5 ion from gravity is g.

  98.03: An object in equilibrium has three forces, Fdoc(nwqe/hc:i2 sy(;:fd 5 st1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. Tne(s(t/hqc:s :2 id5 od;f wyche magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10(m7t-c xvc1gy7 )gkhi newtons can be combine to form a resultant with a magnitude of which of the followgmvktg)(y1x7i 7cc h -ing

  10.06: Which of the following statements is mwx.2cgg,yo/wx(ci y 1ost closely associated with Newton’s Thi w.cyg(og2 1,xcy/wxi rd Law of Motion?

  95.06: The reaction force does not czfs /ihvyg6z d3d4 :-:o*mxvx ancel the action force because:

  14.14: A box rests on the floor of anaxufnw7( t/:c elevator. The elevator 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 tnxa:f wc/7t(uhe Earth?

  15.15: A skydiver falls downward through the air with cons).6zvx;jsnlt tant 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 favx ).n6 zlstj;ll?

  06.08: A baseball is thrown byz * g o6q.h8stw:l3 :xzb1jlky a pitcher with a speed of 35 m/s. The batterswings and hitsjs:xt 86b*:l .3yl1zzqgoh kw the ball. 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 b7pdu/9z*q: xwya1y r.9tl x dgook 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 x9 :gdd7qlxy t1up9y*. / wrzathe book?

  05.06: The students in a Physics I class werez+f oojz /a49cqw v33kd. x8wu2x) inw in lab conducting an experiment related to Newton's Second Law. The collected data were displayed3n8 +4xw c./j2q3oaxwdvkui 9f)z ozw 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 ma)m1* o z ks),fho*tzwx*sq4c1wj qcw- ss of the object was halved,then the accelerationwq)o,zo 1*skwztfhw xs1* q*c)-4jmc of the object is

  96.15: A car whose mass is 1500 kg is accelerated unifordv:wd5q i0k: umly from rest to a speed of 20:5vk 0iqduw:d m/s in 10s. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down th tnt*ji// j3w -g:f0r our(dmbe road. The mass of the trailer is 4 times the mass of(wm /gb:0ojtrtjn-r3du f *i/ 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 tractor-tra5q/km(n of+1z ekt 9xh hjz:7biler trucks generally accelerate much more s51x q+(/bhk z:jmehkzn9 o 7ftlowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless w22+ emkrutx5rink throws a 2 kilogram ball, givin+mk 2xewtu 5r2g 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 wei g,k oueh uv03 hkje7s,8)qw3*uecc3rght of 100 newtons is acceleegv3,qk7s8)u,ouhruhwj k0 c3 3* cee rated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated from rest by k2f l nodz. o3g*weg/ 8+us+bfa constant force o++ s 8bge23.w*kf dlo fg/unzof 2400 N. What is the speed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a rough horizontal(+lr eugi5 9f 45parsl floor before coming to rest. The frictional force acting on the block is pa ig955u4l(f slr e+r3.0 N. 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 e7hayf rmx5u+:.m .s r orqxq+psz6+ 6a rough horizontal floor before coming to rest. The coeffi.fr s .+u++poqrey r5q 6sxmm7axz6h:cient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontaj) go0 /gt89kbqjw h(tl surface while a person pushes directly to the right on the box with a force of 60N. The coefficient of kineth 8q9gjb/jg)(t0w t okic 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 accelerates uniformly to rest on a hor2 ekfi 3r7 ux69ngry(cizontal surface. The block travels a distance of 12.0 m during the slide. Which one of the following choices best represents the coeffr7 e3n k(f9gxu62i yrcicient of kinetic friction between the surface and the block?

  00.21: A car of mass m slides across a patch of i1 .uco9oz m0inddi,q*ce at a speed v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kineticcooii m ,.udz9 d1qn*0 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 h5ou2k 1 tg1xwat a speed v with its brakes lk 1ot2x 15gwhuocked. 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 by2t:b9y l7hq ;3qj5lpwo.vj si slamming on the car's brakes and skidding to a stop. How far would the car have skidded if it h32hq.i:qlb tsl ;59jjpo vwy7ad been traveling twice as fast?

  99.39: The driver of an automobile must carefully control each of the follo-/ s,t 4ttgyxywing devices. Which of t /tyyx4tg,-s 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 y 7+g, 9myr ek+4nctynnewtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36 m/s near thmt+7y+n4,c gnky y9ree surface of the Earth at takeoff?

  07.21: A box slides to the right across a h( l4ss27b6 omu0ul*o m3 ovmydorizontal 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 as2v *bm u oodsl30(my7o4 slm6u 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 thrpg/rzdzp ;ff/*b .4f0;l huvd ee roller coaster tracks of equal length. Assume that on 4/rl p/vf;zpd*; hdf0gbfzu .all 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 - 7/-jnvdj 5nu lyfb9,h3os* 6raeoxgshows three roller coaster tracks of equal length. Assume that on all trunl,n9od* -yfxrsaegj 365o-j hv7 b/acks 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 reach the finish first?

  02.29: Assume the rollercoaster cartrolls frictionfo1a9)dqmzh* cbc dlf l 6x.y)6,he)r lessly along the curved track from point A to pointf 9)x6l d zb*l.qhmec ha 1f)c,yord)6 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 8x p4cty9n)g;cw+rr unfs w)3across the floor by a rope which makes an angle of 300 with the horizontal. Which of the follow xwrty3 fn 48;9scg+)cwnr)u ping 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 in the diagram?

  04.40: A 6.0 kg block initially at rest iu0th2csnb- v, v,jha 9s pushed against a wall by a 100 N force as shtu s b9jh -v,cnva02h,own. 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 second?

  05.10: A homeowner pushes a lawn mower across a horizontal patche 9o qist2n:f, of grass with a constant speed by applying a force P. To,92ni:s tqefhe 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 moving n4n2w98jlc ah. Which of the following statements concerning t a9ljn4n2hw 8chis situation is CORRECT?

  06.15: A crate of toys remain rwgauk3-b -h+mw2a8 he0oz 1js at rest on a sleigh as the sleigh is pulled up a hill with an increasing speed. The crate is not fastened down to the sleigh. What force is respo wmw3a bjrhoguz-2-h0a ke8+1nsible for the crate’s increase in speedup the hill?