99.36: What happens to the inertia of an object when its velocity k7wi ucei:wxbnw 9/)4qb 06tf is doubled?

  02.14: An intrinsic property of matter is one thatg f4+bx 85.q cm9ydloh does not depend on the quantity of matter present. Which of the following properties is NOT an intrinsicqmd oy985xc+f.g h 4lb property?

  04.16: A 20 kg boulder rests on the surface of the Ea-4hha t4lvu 8nju4,iarth. Assume the Earth has m-tuuv4n h4, hi a84jlaass $5.98 \times 10^{24} \; kg$ 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 k brj*kt6; xt8the surface of the Earth. What is the magnitude of the gravitational force acting on the ear8k *;6k tjxrbtth 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 whil48axf6(; p um6ucbbca e its acceleration a6(xa; b u468pc mcbufdecreases?

  00.11: A certain particle undergoes erratic mak7eu- 5yqa;syy f*q u6z) bf(:oc sd/otion. At every point in its motion, the direction of the particle’s momentum is ALWyseo*bafs :dyk-5 q/f7z)c 6( yauqu;AYS

  17.14: A block is suspended in the air at the end oklz7/l:v( trlrc v72 j er7 ;hyk9wkw.63nonkf 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 the force of the string on t9ol:kzv 7wrwrjvtn h7 ./k(; cy2rl3e6klk n7he block?

  07.18: In which one of the following situations is the n odlb)zvtk1:x,k/ f a-et force constantly zero on thed/xzlkvt):1b, -f koa object?

  13.28: An object is in free fall close to the un t:4otupe4i/sk b:un(6;oi 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 magnitu:u(toe u i4;6ntpuon4/ib:sk de of the object’s acceleration is a and the magnitude of the acceleration from gravity is g.

  98.03: An object in equilibrium has threu4b9h; n uiv/me forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitude of the resultant ofF1 and F24i umv/bnu h9; is

  01.07: A force of 6 Newtons and a ft79 n5cz ,kw 1vxsgth1ig6r/worce of 10 newtons can be combine to form a resultant with a magxt17i/hr6 zgk 59cnst g1vww,nitude of which of the following

  10.06: Which of the following statements is most cm o49zp igj7yi:l/r15vuklr6 losely associated with Newton’s Thirk7j r5ylpi9lz1ur iv/:m 6go 4d Law of Motion?

  95.06: The reaction force does not cancel the a9cd au.ylxr9 ;ction force because:

  14.14: A box rests on twdq1ypn9y+.s he floor of an elevator. The elevator is accelerating upward. Which one of the following choices best dq9p1y+y w.n srepresents the Newton’s Third Law pair force to the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls downward throughrmqv9ow)(42 nu -sior s9 kxr; the air with constant speed. Which one of the follorvi9 ss qo4rumr)xo(w;k n-29 wing choices 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 spe a, miakv,m16eed of 35 m/s. The batterswings and hits the ball. The magnitude of the61eam,v k,am i 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 is a calobc bz 0053xvlculator, 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 the book?ol z50c 3bbx0v

  05.06: The students in a Physics I class were in lab com4 b*feb24k/humukn6ap c34wnducting an experiment related to Newton's Second Law. The collected data were displayed on the graph at the right. From this graph, what conclusions can the studentauckk*2nf mem 6ubb4h3w/44 ps make?

  99.03: If the net force on an object were double+4xd*dy34 her iy fxq3d while at the same time the mass of the object was halved,then the achd+*xq ryf 3idx434 yeceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly /rz ti r2g f9396zjehdfrom rest to a speed of 20 m/s in 10s. The magnitude of the 9 frjidz2g6 9/ertzh3 net force accelerating the car is:

  99.05: A tractor-trailer truck is tra .qvcx yk9v0*cveling down the road. The mass of the trailer is 4 times the mass of the tractov.vckc yq9x0*r. If the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles ;d5w eo v3x+esbest explains why large tractor-trailer trucks generally accelerate much more slowly de3e s;v5ox +wthat automobiles?

  99.19: A 50 kilogram sq as(, 5em cq6vv44qe5khnagp *q7. opkater at rest on a frictionless rink throws a 2 kilogram ball, giving the ,oea 4n.gevhmq65vs7 (ppcqa q*5k q 4ball 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 weii/ 1j(dhmut. tvdv m80ght of 100 newtons is accelerated1th0 dvd(m8i/mu.jt v 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 forcefp//p poi(ei h- 4i:my, k:xhd of 2400 p/h p, e-:fyik(4dp/i himox:N. What is the speed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speeek p. wn7ag5r1s95wd td 4.0 m/s slides across a rough horizontal floor before coming to rest. The frictional force acting on the block iswt571 ea.pk9d5 grs wn 3.0 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 a rough horizodjdxf2.:ke : oz+pjkf00 lf1u ntal floor before coming to rest. The coeffid0p x :jkzjufkfe1:.2 0lf+do cient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a person pushtwzr+9nj b yn9 u-x5s+es directly to the right on the box with a force of 60N. The coefficient of kinetic friction betw+-99unnsrjb wy+zx5 t een 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 r6,tnockukd(9 x0t lwxk;+v -to rest on a horizontal surface. The block travels a distance of 12.0 m during the slide. Which one of the following choicektvw,6-d x0rk (l+ n9c;k xuots best represents the coefficient of kinetic friction between the surface and the block?

  00.21: A car of mass m slides ac 1rpwkgv4f r/.r4 h68 epkktf+ross a patch of ice at a speed v with its brakes locked. It then hits dry pavement and skids to a stop ink +w8f rtrg1vp4.hpk/f4k6 re 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 at a speed v with its braksp 1*0u/lctxb/-s e yres locked. It then hits dry pavement and skids to a stop in a distanced.0cyt*eub1/xs lrps/- 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 emenzpi)9)g*bt spv iaunyp)sds,d m8bi 27n4+ 9rgency stop by slamming on the car's brakes and skidding to a stop. How far would the car have skidded if it h7p)nngtsp9vsb +9i2,yi mz 4bsau ))p8*dnidad been traveling twice as fast?

  99.39: The driver of an automobile must carefully control each of the following3o zkn+g6j4m7kbmf f+ d m+k 67 4fombfjzgn3+kevices. Which 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 ofof56hk7(busnnp ,o i+ y1jdp , 15000 newtons is 24000 newtons. About how much5 d (njn7 u6iok,p1fo,syp bh+ 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 ri.6 uqlzs4 3lhynjw5:j ght across a horizontal 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 accelerates to the right, rank the sizes of these three forces exertsj6zu4j q.h:l 5wy 3lned on the box.

  02.27: The diagram below shows three roller ; zsehosq-ovd4xy( 1;on s;l:coaster tracks of equal length. Assume that on all tracks the roller coaster carts sq; ;osoz1s-syhx;d (oln 4v:etart 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 shows three roller coaster tracks +2sj 3k*ssk,; fgg iqmof equal length. Assume that on all tracks the roller coaster sk gm,j+*ikf 3s 2g;qscarts 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 frictionlessly along the cu1;ylv g/z- ; gfgjmae*rved track from point A to point C under the influence o1;gy/g*;l ma jfv e-zgf 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 ocgs)2sx9ys*8qx wt/ across the floor by a rope which makes an angle of 300 with the horizontal. Which of the f) /gcs2w8q x*oxys9tsollowing 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 k w 1ym)ua kqozm,:u6:against a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coefficientm kq, ow)mku6y:u1 a:z 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 witikph xmad-3* 9j+*a cth 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 force mag*htmi-a9k +jac x3p d*nitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crate on a table. Neither is mfy+s *; hbd/nhoving. Which of the following statem bn+*hsdh;/ yfents concerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a 22 zlqff2s7ngubg+7vhj;3r g sleigh as the sleigh is pulled up a hill with an increasing speed. The crate is not fastened down to the sleigh. What r j q2h gz7g3lung7;+2v2f bsfforce is responsible for the crate’s increase in speedup the hill?