99.36: What happens to the inertia of an object when its velocity is do+ym4f13h w lg,jol.vtubled?

  02.14: An intrinsic property of matter is one that does not deb+ r++xhj ex6xpend on the quantit xexrb+xjh6++y of matter 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 the Ea ye4cbhx 6j qqz2k3((brth has mass x4bh2q6(qe(3 cj zbyk$5.98 \times 10^{24} \; kg$ 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 fal: :2;pbre1c sa0 q. qh9clrpygl near the surface of the Earth. What is the magnitude of the gravitational force acting on the earth by th : 2 aphcly1er.:;cpqq0rsb9g e sphere? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to increase wh,ryvl2.petkmgld(1r.hg p25ile its acceleration decr25mg yp .(rt1d2 .l,lehrpvgkeases?

  00.11: A certain particle undergoes erratic motion. At every point in its ef/t a ,l70mutmotion, the direction of the partea 0mf7 /u,tlticle’s momentum is ALWAYS

  17.14: A block is suspendedme b6:vot; +fguc/se4 in the air at the end of a string held by a person. Theu6+o/e 4:m vtc gsbe;f 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 the block?

  07.18: In which one of the following situations is the net for,pnm ae28m(e.bh7kkv nz1q s :ce constantly zero on thek8:2,vqz m bs 17a em(kepn.nh object?

  13.28: An object is in free p0 9(d hlrcyw2fall close to the ground. A person intervenes and slows the object uniformly to r2pwdl( r0chy9est. 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 g.

  98.03: An object in equilibrium has three forces, F1 of 30 N g*kxm6j9 mn1t, F2 of 50 N, and F3 1mmxg nk t6j9*of 70 N, acting on it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can be combine to form gprfb cl.7n:5 a resultant with a magnitude of whib.:grf 5l7pncch of the following

  10.06: Which of the following1zlw 6x( /tbqpf,mn b1 statements is most closely associated with Newton’s Third La( xp zbflq1t n/,w6mb1w of Motion?

  95.06: The reaction force does not cancel the action fo 48usfxqzx522c: cui yrce because:

  14.14: A box rests on the floor of an elevator. The elevator is accfh1+95 pgyo.sr y4f fn5 fok3j1xs av1elerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational force ac1fy 1jp 4fk 39f+oygvh s.sa5r15fx noting on the box by the Earth?

  15.15: A skydiver falls downward through the air with constant speed. q be3d8 .)hmmi 96zfyt)ux) py Which one of the following choices correctly descrup))9t. dqym3 f xz)8iehb6ym ibes 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. l, qf,v8c2g4rscfmw 2 The batterswings and hits therq8l ,2 4,smffccgv2w 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 book is ab;evn 05apjwe(;f6) gpzwq) d 9,wi mc 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 the(vp9dnw) q w6;cp)e wai0j f mb;5zg,e book?

  05.06: The students in a Phvq7p)aq5yj v3 ysics I class were in lab conducting an experiment related to Newtonq5v )jv7p3qay's Second Law. The collected data were displayed on the graph at the right. From this graph, what conclusions can the students make?

  99.03: If the net forc q7 d3gs5gwe-qycvp(:e on an object were doubled while at the same time the mass of the object was g(p-dvcge5 qyswq7:3 halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformlybiim3irn 80-m (dcrh0 from rest to a speed of 20 m/s in 10s. The magnitude of the net force accele3(dhmim 08nb0i-rr c irating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass of thy2s k0y v2tjnlo j b*.fz7j0v:e trailer is 4 timesvolv0 jjnz* sy0 :f27y2j.bkt the mass of the tractor. If the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following princibpxqcq7n ;v90 ples best explains why large tractor-trailer trucks generally accelerate much more slowly that automobiles;qp 7cbxq 0v9n?

  99.19: A 50 kilogram skater at rest on a frictionless xys6w:ae ;d1f rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statex6fwe y:1a;ds ment describes the subsequent motion?

  00.13: An object near the surface of the earth with a w *yi8p; 42.ei vwtxmpgu.s0oreight of 100 newtons is accywu2ir0; 8 4.o v*xtp.pi mesgelerated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated fru5;*kfn h 4nviv *m8a/ cdq1room rest by a constant force of 2400 N. What is the sk aq*hi do4u1v*c /mfvnr 5n;8peed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with in b4(m2kck7h mgdtm,c2itial speed 4.0 m/s slides across a rough horizontal floor before coming to restb7km 2th md(k4c,2cg m. The frictional force acting on the block is 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 hor gmmvv(uy s:,w1l,h)lizontal floor before coming to resg :lmhyvu(lvs ,m1) ,wt. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest ofj60gq+ *wfca.zg +rxn a horizontal surface while a person pushes directly to the jzx0* rq++cgg f .awf6right on the box with a force of 60N. The coefficient 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 acce,sm b+o)sx8z slerates uniformly to rest on a horizontal surface. The block travels a distance of 12.0 m during the slide. Which one of the followinz8bo,s msx+s)g choices best represents the coefficient of kinetic friction between the surface and the block?

  00.21: A car of mass m s q;y,zr: j68mru6zzkh lides across a patch of ice at a speed v with its brakes locked. It then hits dry pavement and skids 6j:mk uzh,r6z8z;ry q 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 ioz6 ,xb-(fi yfce at a speed v with its brakes locked. It then hits dry pavement x6 iy- zo,f(fband 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 by slamming on the cagwg,w0 -upi( ar's brakes and skidding to a stop. How far would the car iapw0gug , -w(have skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully control each of the fovwm/ds e4qzp -wbbm8bo* 3m*y.p0b 3mllowing devices. Which of these deviceb p*-vb3 4md 0ze*qypwm3/.mwsbob8 ms 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 weightgt (cdt.3a:0-dm- :qfi iq qok 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 nearc g :0. idi-mqfqat(okqd:-3t the surface of the Earth at takeoff?

  07.21: A box slides to the right across a horizond qqxdda;2*(wc8x -c0ib9yn ptal 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 accelerate wcpb-cy09i 8*dad ndq2xq ;x(s to the right, rank the sizes of these three forces exerted on the box.

  02.27: The diagram below shows three roller coaster tracks of equal lenuq *nlyoa ffu+8*xw/3 gth. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlesslyx f 8wf*nlua3q/oy*+u 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 lenzh59 )pj;v8nxnp4nt ;a:c syz gth. Assume that on all tracks the roller coaster carts start n acz ysp9z:px54);v htj8;nnfrom 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 curv8;k;/j pn*dbvtniy ;d .gb9 obed track from point A to point C under the influence of gravity. What would be tkj n d*tpobyg;.;bbv/i;9 8ndhe direction of the cart's acceleration at point

  02.40: A box with a mass of 50 kg is dragged across the floor b,y6 taf;kr8f my a rope which makes an angle of 300;f,a8f mrykt 6 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 wall by a 100i s: h9q/xb+yh N force as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of static frictio s +h:hi/q9byxn 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 horizonm q 6b*0 -ubohac7-rj2ooqj5rtal 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 lawn mower. Which ofmb2bu*6-cooo-rr7hj aq5 q0 j 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. f0pbr:7ph c2 k;m.zfi):k/dqcam p, tNeither is moving. Which of the following statements kch2:0kff /az i m. b :,qp7pt)mrc;dpconcerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is. mqj) x1uyi-mu v7/n6c8zfov pulled up a hill with an increasing speed. The crate is not fas7mov j-ufx.)1 qum6yzi8nvc/ tened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?