99.36: What happens to the inertia of an object when its velocity islsd8e2 1gskf * doubled?

  02.14: An intrinsic property ofi88g2ndt3w k+b igh8dhfwc9 w1q+yk9 matter is one that does not depend on the quantity of matter present. Which of the folyg88kw 2tb8inkcf gh9w9i qd 1dhw3 ++lowing properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the s zm)4lda* /jh4tbq9 f/d:pv wburface of the Earth. Assume the Earth has ma// bfw v: abjt)l9qzd4mph4 d*ss $5.98 \times 10^{24} \; kg$ 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 Eartu 8rr.vik8jid/ sb+t5h. What is the magnitude of the gravitational force actin/t.kr8rib s8vi+dju 5g 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 whi-:z( cvmlzovhk xx;/.millm :9p3i8ole its acceleration decrease8/ xo.vlvlhm:lczi;o: zm3 -pi(k m9xs?

  00.11: A certain particle undergoes erratic motion. At every point k7x.p1q zvf /h: 6iqj4do0qexin its motion, the direction of the particle’s momentum jo: 0 .q71/p kqx qxfezhvi64dis ALWAYS

  17.14: A block is suspended in the air at the end of a string held b -wzfm(z bw o:)g.gqw-xl)3yuy a person. The person pulls on the string uniformly accelerating the block upward for a short time. .w- uz zf qm)ww:3-lg(x)y gobDuring 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 followia,2b1* 5ve qgiwve.xal/g-ln(1 0yh 4vnvmvjng situations is the net force constantly zero on the objectab-xihy5v1,e4q0l( *1eg .ajw nn2gv v/v lvm?

  13.28: An object is in freek 8 4zth m-a7tn-:bznq 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 tha z8-mtht-nz k4:b 7qne 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 t)o7nb w*phh:has three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitude of the resultantb *t7:o)pwhhn ofF1 and F2 is

  01.07: A force of 6 Newtons and a 4 siz3am wqfza6 83vt,force of 10 newtons can be combine to form a resultant with a magnitude of w3vz3asf8 ,ztmqwai 46 hich of the following

  10.06: Which of the following statements is most closely as 5+a rgvu(p3oy1h4 mcjsociated with Newton’s Third Law of Moti u+vh1r3mpjo4 ac (yg5on?

  95.06: The reaction fo tx;,hfax t.-vrce does not cancel the action force because:

  14.14: A box rests og7jlfo73l94-to ycmon the floor of an elevator. The elevator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to-y934jg llo fo7m7cto the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls downward through the air with constant speoaua1x v) 7b+ 9:qavu.dl:h zhed. Which ona.a: )bhuv+q :xhdu l9v7zao1e of the following 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 speed of 3y6e4 +hedufk,5 m/s. The batterswings and hits the ball. The heukd e+6y ,4fmagnitude of the force that the ball exerts on the bat is always

  11.13: A physics book sits at rest on2 ut4tc;hjne9*jhr .g. n w5/-asmcti a table. On top of the book is a calculator, also at rest. Which one of the following chow 49.t i.jsecghnm*-hn/t cj;a 5rt2 uices 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 conducting an experi 6wfibzz*urtbq.j yhtcsznc 69; xf4/*k(7 2 gment related to Newton's Second Law. The collected data were displayed on the graph at t tz9/xbcyf nj*. 7 gk(ts;zwzh 64f*r2u6 biqche right. From this graph, what conclusions can the students make?

  99.03: If the net force on an object w:,ohbe q 6whtp2q4u,oere doubled while at the same time the mass of the object was halved,then the acceleration qu6eq2hhtpwo4:ob, , of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly from r a*:ffiq c40dbyde (h2est to a speed of 20 m/s in 10s. The magnitude of the net force accelerac:2efqh4i*( bd0daf y ting the car is:

  99.05: A tractor-trailer truck is traveling down txbz5as 2 8j:yzhe road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force that yb2j8z5xa: s zthe trailer applies on the tractor is

  99.16: Which of the following principles best ex/ (g ;-ol9dznky v5wc fg9omm,plains why large tractor-trailer trucks generally accelerate much more slowly that avn( k;5mg-cm /oo 9 gd9l,zywfutomobiles?

  99.19: A 50 kilogram skater at r,1la6vn v et(kest on a frictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Whiatev l6vnk(1,ch statement describes the subsequent motion?

  00.13: An object near the surface of the earth with a weight o, +ra3tm5 pilk42o/uf jjzv z;f 100 newtons is accelerattv2rj35z + /;4uopzfk l,jai med 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 restn23 vfsr7p l;j:ie x pdm2-r*v by a constant force of 2400 N. What is lj;n2:d2*rv-7 i pr 3xsvmpefthe speed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a roud.o b/nd qlqxk z;4keabwf4 ;k,9.y)wgh horizontal floor before coming to rest. The frictional force acting on the block is 3.0 N. How far does the block slide before coming9z;o,4xb.daen.kk)qwdy ;kq/ 4 fblw to rest?

  95.38: A block with initial velocity 4.0 m/s slides 8.0 m across a rough a( i,9+0cv u6dhy(vcjy8aml nhorizontal floor before coming to rest. The coefficient of frictiuhn ,caly89mjd6yc( vv i0+ a(on is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a persoy2e;/ggy 7s.uka mktt9 -x-jnl r4g5on pushes directly to the right on the box with a force of 60N. The coefficient of k5sna2 9r jxt4-gl .;g tko7me/kygy-uinetic 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 accelerate4pm0b v v,-utus uniformly to rest on a horizontal surface. The block travels a distance of 12.0 m during the slide. Which one of the followiu-4,mt0p bv vung choices best represents the coefficient of kinetic friction between the surface and the block?

  00.21: A car of mass m slides across a-( 75qiuoat fcz z4wg( patch of ice at a speed v with its brakes locked. It then hitzag iqzo5(wc4t f7 u-(s 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 at a speed v z(l4g;);l mgu; n;n3d9,j ruhcxk dmfwith its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of k m;xdg 9; ulckzrfn l;;,jm4ugn)3 (hdinetic 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 0wd*wb2d i1jru:wb p3 yg;xi +slamming on the car's brakes and skidding to a stop. How farx d+b3gpbi *dw;2wu:0 jiw ry1 would the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully control k3fuf2q r0coje ucoly0g( +(;each of the following devices. Which of these devices can cause a cufgcf 0lore02( k(+q ;ouy3jn acceleration in a moving car?
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net force onst3n(2y x4kgy6.8 kd; cicfkb a rocket with a weight of 15000 newtons is 24000 newtons. About how much time is needed to increase the rocket ’ speeiy;. bsckxcygf4k6(d 382 tnk d 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. A pers3s5m 7vr hwni(on 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 b3m7 si(nv5rw hox accelerates to the right, rank the sizes of these three forces exerted on the box.

  02.27: The diagram below :3chpsb:g5jm shows three roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start fgsm :3 c:hjpb5rom 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 show cup(sggk7:( gs three roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation g p ku(:cs(g7gand 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/1 )adg6y th .a, xjnmdv+ixg- 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 accelerati1m-d avindaj x y)h,+6.t/ xggon at point

  02.40: A box with a mass of 50 kg is dragged across the 1-y jb. 8h m(ucvqw(sffloor by a rope 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 crate at a constcu81j(mfqys -. bwh(v ant speed of 20 m/s as shown in the diagram?

  04.40: A 6.0 kg block initially at rest is pushe,n9(a k mxdq sfx6w7 6,3koklxd against a wall by a 100 N force as shown. Thecoeffm ldqowka, (x 66n3xk,7fxks9icient of kinetic friction 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) y2bw0sjrz-s 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 lawn mower. Which of the follzr0j2wsy -) sbowing relations among the various force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crate o q96c8cv;vf;z*bj hmmn a table. Neither is moving. Which of the following statements concerning this situation is *;9v8zj qc;vmm6hbcf CORRECT?

  06.15: A crate of toys remains at rest on a sleigh a7m+i rb/b4z 8pkwsy m,w9.ohts the sleigh is pulled up a hill 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?imh/8m.7p bk sw9 wzyb+rt4,o