99.36: What happens to the inertia of an object2pns(wz(gw6i (zu0l f when its velocity is doubled?

  02.14: An intrinsic property of matterh t4i; r)qqu *0;nazrg is one that does not depend on the quantity of mar g0;a)hnq;*zti r u4qtter present. Which of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume th5g9sxefdl+z 90xdm(e c1ntt ,e Earth has mtf+1eg05dn9zlest mx,9c dx(ass $5.98 \times 10^{24} \; kg$ 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. What is t0:xv jjs;1a3wpb yj-khe magnitude of the gravitat kja;1x3vwjs-0 bjy: pional 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 acceleroy65p-d-py- n,bw h xjationj-y po,6-h x y-dnp5wb decreases?

  00.11: A certain particle undergoes erraticrt3f6:nc wev )g(z:5ms ix5ry motion. At every point in its motion, the direction of the particle’s momentum is AL5::rrws( tixmny6 3e)cg v5fzWAYS

  17.14: A block is suspendee;x l euwhol.55 u*mv,d in the air at the end of 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 identifies the Newton’s Third Law pair force to theoex;uv55lwmu l, *e.h force of the string on the block?

  07.18: In which one of the following situations is the net forea*1-op- l rxyce constantly zero onpar1yo *e--l x the object?

  13.28: An object is in free fall close to the ground.4lha:z , nc2uli2t5 kihg i7w8 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 acceleration from gravity is 2l2n8 uwil igcak5: ,zh4hit7g.

  98.03: An object in equilibrium has tr ba--x(2 :f- rzihiuuhree forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitude of the result :2-frib riua -(x-uzhant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons+-, kyxzp lb9mfq)- mt can be combine to form a resultant with a magnitude of whiylq9 -fpz, tkmm-xb) +ch of the following

  10.06: Which of the o7ia2ga gg2m;y*w6 bkfollowing statements is most closely associated with Newton’s Third Lawmi2a*ky2ga g6 b ;wog7 of Motion?

  95.06: The reaction force does not cancel the action force becauserj hg5mcc5x.r6f2y) t :

  14.14: A box rests on the floor of an elevator. The elevator is imk8v-dpo:ox87 uf4y accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the 8f :m87 odv x-okup4iygravitational force acting on the box by the Earth?

  15.15: A skydiver falls downward throug 7mqi /wba:/dph the air with constant speed. Which one of the following chq7m:/ pd ib/awoices correctly describes 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 battere l8zvr 8 1fn34x bq5/d7l nitbs*u/hgswings and hits the ball. The marv3qz bxisl fegbu*n8/5h 7t ld/41 n8gnitude of the force that the ball exerts on the bat is always

  11.13: A physics book sits at rest on ai/oar 8d sxuj)6/ gxm, table. On 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 thex) j8/gauiom/dx6 ,rs table exerts on the book?

  05.06: The students in a Physics I class were in lab conducting gh6d*g9t o 6m/3zsod c3 g1ojtan experiment related to Newton's Second Law. The collected data were displayed on the graph at the right. From this/dz9togg1gt3j*6 do h 3cmso6 graph, what conclusions can the students make?

  99.03: If the net force on an object were doubled while at the same time th4/4 dxntjr7dzv v r)h8e mass njrr74 zv) x ddt8h/4vof the object was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly from rest t0bk*x( mldk +no a speed of 20 m/s in 10s. The magnitude of the net fo(xkbnld *+0 kmrce accelerating the car is:

  99.05: A tractor-trailer truck is travujo/o+ap6/m ieling down the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the trailer applies on the tractor is pumioo 6//a +j

  99.16: Which of the following principles best explainsm l .-)h.01 akwcfksqc2 ,otab pid3r- why large tractor-trailer trucks generally accelerate much more ti.lh r1c-oka,d w.-2)bf sp0q mck3aslowly that automobiles?

  99.19: A 50 kilogram skater at rest on a fri;kz4a:md;r n4 ksxcrxni; 1h3ctionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Whi4;x;nc dih:ra xknkmr4 sz;13ch statement describes the subsequent motion?

  00.13: An object near the surface of the earth with a weight of 100 newtons is akiq zadu+hll 040:zdk9s 0d8ecceleratedd:k4 ld8 i9seud0+0klqz 0zah 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 aycuz 3.zom2m, i z6p/z constant force of 2400 N. What is the speed of the car 8.0 s after beginningzpmc ,2o/6z yumzi.z3?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a rough x.v9rq4* o;ba;l off uq)qma4 horizontal floor before coming to rest. The frictional force acting on the block is 3.0 N. How far d9)r fbqau*;q;4o of 4lqaxvm .oes the block slide before coming to rest?

  95.38: A block with initial velocity 4.0 m/s slides 8.0 m across arwgidh bf2c-*,.1rc v rough horizontal floor before coming to rest. The coefficient ofbricg h1d -*f,2r. cwv friction is:

  09.21: A 20.0 kg box remains at 4;y1 2yt+w;ixibi 9*:bgolbadsa d+xrest on a horizontal surface while a person pushes directly to the right on the box with a force of 60N. The coefficient of kig1ib+b:yy xdtx+ ;idl4*9;i swob a 2anetic 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 unm; b :wbpxd9rwey7d:;xo3z jhk0(d0 hiformly to rest on a horizontal surface. The block travelxhwo90w ( ;:b3djzy rkpd 7d0:;bxemhs 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 mass m sli.74ho rzknbv qx3z9 .n; -filedes 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 distanck n.;fl rv 7ez-h4bz3xn.iqo9ed. 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 across a patch of i 5wy prm)h *:),lyufeomd6ezwb 1 3zm1ce at a speed v with its brakes locked. It then hits dry pah:mlez ym5oyufm)b zrw 3d,116)e*w pvement 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 c/3ttpo- vw)n(fud j/har makes an emergency stop by slamming on the car's brakes and skidding to a stop. How far would the car have skidded if it had been trav/w op3fv )u(td-/nhj teling twice as fast?

  99.39: The driver of an automobile must carefully w+k z9a;msi g 44o5oyrcontrol each of the following devices. k;w 4msz 594agor+i yoWhich 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 newtons is 24000 newsa)f:;6p syki tons. Akisy sa6; fp):bout how much time 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 the right across a horizontq: jnoa7oje(woe n j.pf,;)4 tal 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 as the force T. Given that there is friction f and the box acceleratesjaotfep( o7 j,;).: e oqjnw4n to the right, rank the sizes of these three forces exerted on the box.

  02.27: The diagram bel( d7vcqdb7(dqow 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 frictiqdb 7q((7d vcdonlessly 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 tracks of equal length. Asg8iob-mr n3u4 sume that on all tracks the roller coaster carts start from rest at the same elevation and moog4i b83rmn-u ves 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 frictionlessly along the curved track aqexa9ei 6:0ofrom point A to point C under the influence of gravity. What would be the direct69x ioqa0ae:eion of the cart's acceleration at point

  02.40: A box with a mass of 50 kg is dragged ac -ytg;2o4 -ng /c1pgjut k5zb)flx0onross the floor by a rope which makes an angle of 300 o5gj zn-kglpf4 ;yoxgbtu1 nc-t)2 0/ 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 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 hlv(h(gy: h1s lz6m+ iwall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of static friction is 0.50. y6hhm h(lslv ig1z :+(What is true of the friction acting on the block after a time of 1 second?

  05.10: A homeowner pushes a lawn yrz0spl5ikxe6 y8 d9d chw/ecm b0z69)f9bq1 mower 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 lawn0 f9dsb xkep c9 0/izl)6medw5 h16yb8ry9cq z mower. Which of the following relations among the various force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a jx6u4 h *k3*nmi /igcwcrate on a table. Neither is moving. Which of the following statements concerning this situati mnu /*4i*hx3wci jk6gon is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is puk dwvjx0 u yk,o,yi((0lled up a hill with an increasing speed. The crate is not fastened down to the sleigh. What force is responsible for uydwkvoyk( , 0 ,(ix0jthe crate’s increase in speedup the hill?