99.36: What happens to f(s cxyfx9dj.2c (.wr the inertia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one mp0hcwze/ v)1 that does not depend on the quantitymv ph/e)c z10w 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 Ea7p68fvzq yhq ay5o i+ vn/z5y6rth has m6fny zhpvi y5+ yoq v/5a8qz76ass $5.98 \times 10^{24} \; kg$ 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 fr:)d)w luj ar tw,5l2nkee fall near the surface of the Earth. What is the magnitude of the gravitational force acting on the earth by the sphere? The Earth muwl ajt dnlk ):,5rw)2ass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to increase whilea+fagnh4 *tcmrz , :e;vm.;xt its acceleration dev a:+c ,nt;h ;xmm.e4tr f*gzacreases?

  00.11: A certain particle undergoes erraticxwqd8:4u. rs dvrfy9t-n8h.z motion. At every point in its motion, the direction :8ds d 9-4vz nxryrw8.hq.tu fof the particle’s momentum is ALWAYS

  17.14: A block is suspended t6tct(v/02opbue l6b5ljfi2kd(eyl nc4 ) 7h 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 i2vu 0y4lbtn/e5ktc 6(f)dbt2lp6h c(j 7oelfollowing 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 force constaw; p(daylo r0h:fzg-8ntly zero on -:yf 0g;hld8z arpow( the object?

  13.28: An object is in free fall close to+m yhshw +-b7p 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 th+ h+y7pbhwm-s e 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 equilib 1zsu8e gz*c7orium has three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The mag ozgc8 zesu7*1nitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons canzdff c4m3)qfa0mip1n3eg:fs( +h, bl be combine to form a resultant with a magnitude of which cm1pf,fz ( amd+ lb3qi )3:4h0gfensfof the following

  10.06: Which of the following statg1bg hjp k289 xc6jaj;ements is most closely associated with Newton’s T 2 8g9;cghb1jjkpax6j hird Law of Motion?

  95.06: The reaction force does not can0og3o)jhg sj8 8 c9qizbe* dyhxjpn,tv 75a0 *cel the action force because:

  14.14: A box rests on the floor of an elevator. The elevv +ah,qu45 m.qc(jcp3 glyj o2ator is accelerating upward. Which one of the followi.q2ocj +4gchm 5pj3,auq(v yl ng choices best represents the Newton’s Third 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 qwxc(2c5d q-t drd m*27 thc;hbe2m c0one of the followingdchmbdth7cq2dt022 *m qw;c r -5 cex( 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 35 m/f*mtma7 u j ae.4:7bzos. The batterswings and hits the ball. The magnitude of the force that the ball *fe u.j7oam4t z7am:bexerts on the bat is always

  11.13: A physics book sits at rest on a table. cdx4*u /8,2pkwb, y+bvvve rr 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 th*,r+ ep, b 4ykc8vrd /vwxvbu2e force that the table exerts on the book?

  05.06: The students in a Physics I class were in lab condf a4)7 a a6a u0cp+ixlxifh9;xucting an experiment related to Newton's Second Law. The collected data were displayed on the graph at the right. From this x0aa4lfpif;+ au96h)7i cx axgraph, what conclusions can the students make?

  99.03: If the net force on an object were doubled while at t+r n ,;(ltbbnwhe same time the mass of+r t w;,ln(bnb the object was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly from re3dm os5i8eq1) djkqm7es1z g1 st to a speed of 20 m/s in 10s. The magnitude of the net force accq)e1q oezd7msm js5ki113g d8elerating the car is:

  99.05: A tractor-trailer truck is traveling drw,js4q3 r-9,oungps h i ;p3r,k1i kwown the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward,p,,3 jqk;gw rr1 is uws4,rpo3nikh9- the force that the trailer applies on the tractor is

  99.16: Which of the follow5 0gha mn)n7os9onn87ybnsp+da( j )bing principles best explains why large tractor-trailer trucks )a9n7dn )oh+mp0b(sns y8ob ga n5 n7jgenerally accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a *dlrpom (f xr02kgocs yc:16-frictionless rink throws a 2 kilogram ball, giving the ba1(smo*c- ypr :0o fdlkx62rcg ll 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 wek 2cwe8qf94 a jgq48og fu/x:right of 100 newtons is accelerated at4f9 cfx g8o a :/ugj2qrw8qek4 $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is akwf.rn:*+ikyhajp9kh237 r pccelerated from rest by a constant force of 2400 N. What isi2ry f*:p kjkphhr.n 9a+3w 7k the 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 aaros1-a5dhe f6c4 8g s rough horizontal fl-1cfg 6h4 asa 5srdeo8oor before coming to rest. 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 mn,-xm8cey4 0apjd 4 bk across a rough horizontal floor before coming to rest. The coefficient ofck bnyap-xjm 48d,40e friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a person pushs 4(dgb 3 (5nwsc69db+hqwreves directly to the right on the box with a force of 60N. The coefficient of kinetic friction betweg9(w5bv c6s+nd(4sqrhebd 3 wen 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 unifor; l;s lqqp/ir0mly to rest on a horizontal surface. The block travels a distance of 12.0 m during the slide. Whi i0qr;;ls lq/pch 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 acros.:a19o 97axbyulk np+vwwv9p s a patch of ice at a speed v with its brakes locked. It then hits dry pavement and skids to a s7wwbax+oa9lu kn :p9 9 vp1y.vtop 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 wit qpmq; )i2.jskh its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic friction.2 pism qkj;q) 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 slammingx3,u 58j hywa;)4nqpzankn. b 3j m(ig on the car's brakes and skidding to a stop. How far would the car havayb 3z hnpn,gq8 i(nk.w);m4jau3j5xe skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully control each of the following 5dq4d i 2yp a)bke0/:gwwh(cama0j5fdevices. Which of these devices can cause an acceleration in a movingd /kaacmy )g pwjwaq2d:h0505eifb4 ( car?
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net force on a rocket with a w 5h9y zj4zq:0x gop);glxkvq9 eight 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 near the surface5g jxzlqy0ghvqxk4 ; op 9:z9) of the Earth at takeoff?

  07.21: A box slides to the right across a horizontal floor. A person*hze;wxzd7 9 uyk 4p,m called Ted exerts a force T to the right on the box. A person called Mad* w7,uyz4x;hemk pz 9rio 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 exerted on the box.

  02.27: The diagram below *ei3 v1msa1 v+fbsuyqx*c + w(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 frictionlessly over the trm+1s3aw f*b(vi1qx usvey * c+acks 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. A* 5 eoia,p5falyi7*hx ssume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly over the tracks to the finiheo ly5f,*a5xa i*ip 7sh.
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 rollw+bh1 p8b-1pe enfug4ercoaster cartrolls frictionlessly along the curved track from point A to point C under thhbpbg8-p 4wun1e1fe+ e influence of gravity. What would be the direction of the cart's acceleration at point

  02.40: A box with a mass o-8g(a1bdha tcbg- + (*zdkn pgf 50 kg is dragged across the floor 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 constant speed of 20 m/s as shown in the dia-hptad(gzd+k(-b g * a81nbc ggram?

  04.40: A 6.0 kg block iw/;+gnk b+kfgbmv43. yis sa 8nitially at rest is pushed against a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of static friavyk4msnk+ g;3/.sgwf 8 b+ib ction 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 pmg26rs: h9nnacross a horizontal patch of grass with a constant speed by applying a force P. The arrows in the diagram correctly indicrp:n69nm h gs2ate the directions but not necessarily the magnitudes of the various forces on the lawn mower. Which of the following relations among the various force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crate on a j:mguk p(f 2-qtable. Neither is moving. Which of the following statements concerning this situation isgj2u:qmpk-f( CORRECT?

  06.15: A crate of toyslfm :g1lcqb 6(qgj 64r remains at rest on a sleigh as the sleigh is pulled up a hill with an increasing speed. The crate is not fastened down to thgrllmc1g(q4: fb 66jq e sleigh. What force is responsible for the crate’s increase in speedup the hill?