99.36: What happens to the inertia of an objewt,y3yw *6gtcxq es0(ct when its velocity is doubled?

  02.14: An intrinsic property of matcll tf /24b 8-kk5axooter is one that does not depend on the quantity of matter present. Which of the following properties is NOT an intri oxk2-4bfto akl8 5cl/nsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume the Earth has p*h adisqmhbz 2vw+e8, z2.-s mass .8hb ehpsdvw q-*s+iz,2mz a2$5.98 \times 10^{24} \; kg$ 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 suh bocrdfnm y1md7;2)0 rface of the Earth. What is the magnitude o2bdfh;0 mm7 oy1dn)c rf 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 increase while its ac4vd xwfw88qk;edfuz,( (j) qo celeration decreasdq) vdo f; (8f,j(uz4kwqwex8es?

  00.11: A certain partia3domw: +dx0c0p yj c6cle undergoes erratic motion. At every point in its motion, the direction of the particle’s momentum is cd0d :a3+ co06wpmjxyALWAYS

  17.14: A block is suspended in the air at the end of a-2 x9jipw- lto5kx 0st 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 identifies the Newton’s Third Law pair force toj2wl0-p i95tx s -okxt the force of the string on the block?

  07.18: In which one of the following situations is the net force constantly 0.p89cadqu ufytg-x3a bk9n9zero on the objef8 t9 aq3cu-uy.bgd9axp0nk9ct?

  13.28: An object is in free fall close to the tg0 :gb)3xig 6s ttk7vground. 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 a6 ktx:7g03s )tgvgbit and the magnitude of the acceleration from gravity is g.

  98.03: An object in equilibrium has three forces, F1 of cs7-ig:ix:pn7(jp f wecgy :0 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitude of the resultan7csefn7c0:gp-ig wp(::yijx t ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newf* a+b+vpaabe 3/xtj2tons can be combine to form a resultant with a magnitude of whapt+ je*a2 bav3+ /xbfich of the following

  10.06: Which of the followp93cf apg/3inr mrqmgcj :574ux(*jying statements is most closely associated with Newton’s Third L crucjpgaypmq j9 /* n4f(r3m3:5g7 xiaw of Motion?

  95.06: The reaction force does .rc73qc 3 bzq0wel. t) 6)ymkaka,etmnot cancel the action force because:

  14.14: A box rests on tfdz n/u/5pq1wly.p 2bhe floor of an elevator. The elevator is accelerating upward. 1d5/ny.pu/wqb zp fl2 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?

  15.15: A skydiver falls downward through thez+l.3 prpgpo59(r rracmg** , huc j;e 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 skydiverrmrercgo;p*hcu, 5(p9rj a* zlgp3.+ during the fall?

  06.08: A baseball is thrown(6 :czqxik 527fgp yuq by a pitcher with a speed of 35 m/s. The batterswings and hits thzup:2y7( qqkic5 g 6xfe ball. The magnitude of the force that the ball exerts on the bat is always

  11.13: A physics book sits at 7pm.k,qqqlc :m* -htq rest on a table. On top of the book is a calculator, also at rest. Which one of the followinclhq tkm:*- ,qm .qqp7g 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 were in labto7.p l;omms 7 conducting an experiment related to Newton's Second Law. The collected data were displayed on the graph atp 7m t;ml7o.so the right. From this graph, what conclusions can the students make?

  99.03: If the net force on h:t f0 ijz.df +l-p+;jidd* jjan object were doubled while at the same time the mass of the object wash:d ijdfp0-;jd lf*+ji +jt. z halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated bo* av8z3-no huniformly from rest to a speed of 20 m/s in 10s. ab-o3 n hv*o8zThe magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down tor40si(k- y.rb/9bmm u(ft or he road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the trailesr/fbim k.mb0 rt 4o-u(o(yr9r applies on the tractor is

  99.16: Which of the following principles best explains why luangu w+w (3r+ 9s)h3kah 9agjarge tractor-trailer trucks generau9jks )( w39g+ah 3rwhgnaau+ lly accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink thre6we-pat,2 j, rt ov-yows a 2 kilogram ball, t ee,6t o-v aj2rp,wy-giving 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 weight of 1t4j8 9)f;eieaeacj9 z00 newtons is accelera)9zi j84aje ceate9f; 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 from rest by a constant for0vxq)ipkh:nq o nf5hi3 e9 *m,ce of 24eqfnoi,3ik*:mv5x09) h n qhp00 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 sljle4.v:7yb/g: .da giqh i c1gides across a rough horizontal floor before coming to rest. The frictional force acting on the block is 3.0 N. How far does the bloc:q7b c ygj/4lvea.ggd1i: .ihk slide before coming to rest?

  95.38: A block with initial velocity 4.0 mn; fx 68)hdxrh,g ad6n/s slides 8.0 m across a rough horizontal floor before coming to rest. The cr)dga6 n d ,h6f8hxxn;oefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a perso2*;w. :*)pega 9jd8 n gurzcferd3vd on pushes directly to the right on the box with a force of 60N. The coefficient of kinetic friction between the bg*p*cj. vw rnod:fd 8;e2eug9)z adr3ox 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 w0y r c0sw x10(:-ug.jqlz1znt r/bwehorizontal surface. The block travels a distance of 12.0 0zny :ecqrrzw 1/l 01u xjs(bw.tw0g-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 mass m slide;3o 3z ntivfi(0 xm.grj91sgvs across a patch of ice at a speed v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The cg. v3vj;0 t1r(g is3omzfinx9oefficient 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 2i0 qlupkziga)m 0i. 8+z za(tm slides across a patch of ice at a speed v with its brakes locked. It then hits dry pavemen0z ut )+mzapi zqk gl2aii(.80t 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 x7x g5/ ;binz+wyg8s oa car makes an emergency stop by slamming on the car's brakes and skidding to a stop. How far would xog b7ngw5siz x;8/y+ 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 followi2osgf*r -jdg 0c;- kdcghz4o9ng devices. Which of these devices can cause an acceleratidz9-o2cr jo gf4;hgs0*dg-kc on 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 wep9w,,fiwmvy mo3s6 :eight of 15000 newtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36 m/s near the surface 3m9:wpwesov, ,if my6 of the Earth at takeoff?

  07.21: A box slides to the right across a horizontal floor. A person called Ted /8kmll5i,systf 5 ec* 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. G5k,slycm8 l *efi/5ts iven 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 roxqxn(,t 8 ,5rg 4ej8:dzvs yagller 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 tox ztvj ,enaqgs45gyd:,x( 8r8 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 tracks of equal length. Assuz3a*f-q1 3c5h mr/pwlt jrg s55jmyk,me that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly over the tracks lpmrrz5q a/jf35y -,js htgw1cm5 *k3to 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 cartr sgx m/vw)tdmh 7vd7+:olls 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 accelerati+v/x ms :)7gw7vh dtmdon at point

  02.40: A box with a mass of 50 kg .o xb.yf1;yoo 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 coyboo1;.f.xoy efficient 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 jsty+.-kx hd+ wall by a 100 N force as shown. Thecoefficient of kinetic frictix+ .j-kyt+hds on 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 patch of grass wit8tjms ;9*n+ nwjzra,sh a constant speed by applying a force P. The arrows in the diagram correctly indicate the directions but not necessarily the magnitude ;s ,wn8mr9j+*jtsznas 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 againsteic rev z)8aerr,. rx1/ 3m6- rqtvt.k a crate on a table. Neither is moving. Which of the fo,eerq6ctr r1v-tv ./i8e z)r3rxk a .mllowing statements concerning this situation is CORRECT?

  06.15: A crate of toys rema e+*y2t .vt;hy jof*fdins at rest on a sleigh as the sleigh is pulled up a hify*ehdo;tf.y v t+j *2ll with an increasing speed. The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?