99.36: What happens to the inertia of an object when its vel xkvna -dyis 11fqv9x1o4n38zocity is doubled?

  02.14: An intrinsic property of m-m 6ot.8 tcltuatter is one that does not depend on the quantity of matter present. Which of cu -mtt.68lotthe following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume the Earth hael 9,1 -cgfcfas ma1cef ,-lacfg9ss $5.98 \times 10^{24} \; kg$ 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 (h h az;, rxinn;8pxf(near the surface of the Earth. What is the magnitude of tinnx;z((8;af hphrx ,he 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 veloci91iyyyl-h*e uty to increase while its acceleration decrea yiey19* yhul-ses?

  00.11: A certain particle undergoes erratic motion. At every point in its a0idx-;j:e+ pte 7dhd motion, tidx:ded0+e tj7pa ;-hhe direction of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string 7kbdeuey( 3 k.o*ycs 4held by a person. The person pulls on the(ed b3* yk y.uc7okse4 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 the force of the string on the block?

  07.18: In which one of the following situations is the net forcem,l,f1 7bpo nstcu4 f( constantly zero o4fo n t,,(p1s cmblf7un the object?

  13.28: An object is in ) cf)1m+w6v iae(kcnufree fall close to the 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 magnituc1 f n))w(u +kvca6emide of the acceleration from gravity is g.

  98.03: An object in equilib(bx. oxv8r )c,/ajwbk rium has three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitude of thexbwajrx, ovk(b) /8. c resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can be combine tuk6 /r) ,g bkij(-xxnuo form a resultant with a magnitude of which of t k6 ji,nuxu)/ (b-rkxghe following

  10.06: Which of the following statement ap;m7kt*u8 qzt2r0 sis is most closely associated with Newton’s Third Law ofz; 78p t*20 sqiuamkrt Motion?

  95.06: The reaction force does not cancel the ac9 +/ lfm8bvrrd6iy1s htion force because:

  14.14: A box rests on the floor of an elevatgazg8s.44ef 95) yxx j:od ohbor. The elevator is accelerating upward. Which one of the following choices best represents the Newton’s Third.y8)95gs xfx z hd 4b4aejg:oo Law pair force to the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls downward through the air with constant speed. Which vrwq gt/(ge)3 one of the following choices correctly describes the Newton’s Third Law pair fwr/gg (e )qv3torce to the air resistance acting on the skydiver during the fall?

  06.08: A baseball is thrown by a pitcher with a speed o xba2do7:,fpuj+htt 3f 35 m/s. The batterswings and hits the ball. The magnitude of the force that the ball exep,axu:7b3t of +jd2ht rts on the bat is always

  11.13: A physics book sits at rest on a table. On i(h5 i.a apbcf,e0;frtop of the book is a calculator, also at r(i;f,a5bp.0e a rhfci est. Which one of 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 were in lab condusezren l2sv2 5+1pp e+cting an experiment related to Newton's Second Law. The collected data wr s sl2v2n+p+1p5e zeeere 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 2vue hapc(+ m0h2zvbw4oz+0p the same time the mass of tha hwz0zu +4(ope 2v+m0 bphv2ce object was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly u. dwsz :+ v tlbq5,xb60vnv:ifrom rest to a speed of 20 m/s invu5 6b zt+ 0:qins, lxbv:dw.v 10s. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road 1n f )fa7w3:vmmhfuld7ncr+a4rv*z,. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the f* 7w :l4vd,v aarfn1mc7fz nf+)u 3hmrorce that the trailer applies on the tractor is

  99.16: Which of the following principles best explains whysn;z0l5is,*9xdnu h w large tractor-trailer trucks generally accelerate much more slod5iw;h9ns xz uln0*s,wly that automobiles?

  99.19: A 50 kilogram skater at rest on a frxmx; ouy5+1 heictionless rink throws a 2 kilogram ball,u ho5;x+me1y x 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 100 newtons is a/mtdd ex,+ .jtq1f5gnct/tqd1e.,f gj mdn5+ xcelerated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is acceleratef1q/ p-dmc x8 zc1e05(zzbsnzd from rest by a constant force of 2400 N. What is the speed of the car 8.0bc18mp s zdzx/nz 1q5ec0(- zf s after beginning?

  98.32: A 3.0-kg block witow/+g;)264gh mfmvv tqmxs7ih initial speed 4.0 m/s slides across a rough horizontal floor before coming to rest. The frictional force acting on the blom ;7/42msmw qg6th+vogv xf)ick is 3.0 N. How far does the block slide before coming to rest?

  95.38: A block with initial ;ge 7 (chxtp8+:ow oxnvelocity 4.0 m/s slides 8.0 m across a rough horizontal floor before coming to rest. Thec7 e+o(xt8x;ho nw: gp coefficient of friction is:

  09.21: A 20.0 kg box remains at)6i* y yeoeac 4j.s* p/sxskqfro2-5j rest on a horizontal surface while a person pushes directly to the right on the box with a force of 60N. The coe .aoo6ypcje* jyi fkse5s)x/s4*2r-qfficient 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 8 m/s accelerates uni w u*pg6tp,-4 j h,a1lg,bupncformly to rest on a horizontal surface. The block travels a di6, n-lgwbcp j4t,hauu*pg1p ,stance 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 slides across a patch of ice at a speed v with itsm)h qkqz*iy) 5 brakes locked. It then ih m*z q)q)5kyhits 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 across a patch of ice ay(tq5kbs: u/ y/lwne9t a speed v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficien ks(:byyl/q5weu 9 nt/t 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 brax8hjh8r2- ctv6 r -ih3uekwc7wdk u59kes and skidding to3k- r8hw xcd9 5h2wj rtu ihk8u7-c6ve a stop. How far 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 t +me ag9oal1- t.t,gr8tk k,ryhe following devices. Which of these devike-+glkg ay .9m1,trr t8o,taces 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 bx4hpd:pngz. 3()sbr2u:p e xweight of 15000 newtons is 24000 newtons. About how much time is needed to increass p )dnx g:pp(3bz4h2e x:rbu.e 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 horizontal floor.c-rjfgrir6;+ cjn 3 ,t 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 laj6 f3r-r;cg t rj,ni+crge 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 xd0 bnu n4pjg;bne x+44)5 lfkcoaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves f d04nl4;+ubknb)xe f5njg4 px rictionlessly 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 trac7gr(gvp7c; pnsykp ;9ks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves fricggpp(;kc ;n7vrp7sy9 tionlessly 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 y,t shrr3p 59bthe curved track from point A to point C under the influence of gravity. What would be the direction of the cart'sbs9y,tpr r5h 3 acceleration at point

  02.40: A box with a mass of 50 kg is dragged across the floor by a ropei+8y1: v9s+b i sl fov,x5ewbi 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 x vio91,b5y +8biiew : fls+svcrate 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 100che(thb(4 90ak* t wbs N force as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of static friction is 0.50. What is true of the fri(4 wtb *s9ehtbka0(ch ction acting on the block after a time of 1 second?

  05.10: A homeowner pushes a lawn mower across a horizontal patch o3wlwp6in wsa94d6 f r.f 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 thea p6riwd39. nf s64wlw following relations among the various force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crate) 4y,lkqvjya2 6m a6ck on a table. Neither is moving. Which of the following statement,v qj2 y6k4k6l c)yaams concerning this situation is CORRECT?

  06.15: A crate of toys remainnfw3v25ylc ,d b 2m9dns at rest on a sleigh as the sleigh is pulled up a hill with an increas3b ddmcn,lwv95 2f2yning speed. The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?